prepare for 0.2.0-rc2 release

It needs some more thought before committing to it.

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
 
     steps:
     - name: Install dependencies
-      run: sudo apt-get install -y libxkbcommon-dev
+      run: sudo apt-get install -y libxkbcommon-dev libasound2-dev
       if: matrix.os == 'ubuntu-latest'
     - name: Checkout
       uses: actions/checkout@v2

Cargo.toml

@@ -1,16 +1,29 @@
 [package]
 name = "uw8"
-version = "0.1.0"
+version = "0.2.0-rc2"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[features]
+default = ["native", "browser"]
+native = ["wasmtime", "minifb", "cpal", "rubato"]
+browser = ["warp", "tokio", "tokio-stream", "webbrowser"]
+
 [dependencies]
-wasmtime = "0.30"
+wasmtime = { version = "0.35.3", optional = true }
 anyhow = "1"
-minifb = "0.19"
+minifb = { version = "0.22", default-features = false, features = ["x11"], optional = true }
 notify = "4"
 pico-args = "0.4"
-curlywas = { git = "https://github.com/exoticorn/curlywas.git", rev = "196719b" }
+curlywas = { git = "https://github.com/exoticorn/curlywas.git", rev = "aac7bbd" }
 wat = "1"
 uw8-tool = { path = "uw8-tool" }
+same-file = "1"
+warp = { version = "0.3.2", optional = true }
+tokio = { version = "1.17.0", features = ["sync", "rt"], optional = true }
+tokio-stream = { version = "0.1.8", features = ["sync"], optional = true }
+webbrowser = { version = "0.6.0", optional = true }
+ansi_term = "0.12.1"
+cpal = { version = "0.13.5", optional = true }
+rubato = { version = "0.11.0", optional = true }

README.md

@@ -13,7 +13,11 @@ See [here](https://exoticorn.github.io/microw8/) for more information and docs.
 * Memory: 256KB
 * Gamepad input (D-Pad + 4 Buttons)
 
-## Download
+## Downloads
+
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-windows.zip)
 
 The download includes
 
@@ -31,6 +35,8 @@ Runs <file> which can be a binary WebAssembly module, an `.uw8` cart, a wat (Web
 
 Options:
 
+-b, --browser           : Run in browser instead of using native runtime
+-t, --timeout FRAMES    : Sets the timeout in frames (1/60s)
 -w, --watch             : Reloads the given file every time it changes on disk.
 -p, --pack              : Pack the file into an .uw8 cart before running it and print the resulting size.
 -u, --uncompressed      : Use the uncompressed uw8 format for packing.
@@ -48,6 +54,21 @@ Options:
 -l LEVEL, --level LEVEL : Compression level (0-9). Higher compression levels are really slow.
 
 
+uw8 unpack <infile> <outfile>
+
+Unpacks a MicroW8 module into a standard WebAssembly module.
+
+
+uw8 compile [<options>] <infile> <outfile>
+
+Compiles a CurlyWas source file to a standard WebAssembly module. Most useful together with
+the --debug option to get a module that works well in the Chrome debugger.
+
+Options:
+
+-d, --debug             : Generate a name section to help debugging
+
+
 uw8 filter-exports <infile> <outfile>
 
 Reads a binary WebAssembly module, removes all exports not used by the MicroW8 platform + everything that is unreachable without those exports and writes the resulting module to <outfile>.

examples/c/build.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-clang -O2 -Wno-incompatible-library-redeclaration --no-standard-libraries -ffast-math -Xclang -target-feature -Xclang +nontrapping-fptoint -Wl,--no-entry -Wl,--export-all -Wl,--import-memory -Wl,--initial-memory=262144 -Wl,-zstack-size=90000 -o cart.wasm cart.c --target=wasm32 && \
+clang -O2 -Wno-incompatible-library-redeclaration --no-standard-libraries -ffast-math -Xclang -target-feature -Xclang +nontrapping-fptoint -Wl,--no-entry,--export-all,--import-memory,--initial-memory=262144,--global-base=81920,-zstack-size=4096 -o cart.wasm cart.c --target=wasm32 && \
 uw8 filter-exports cart.wasm cart.wasm && \
 wasm-opt -Oz --fast-math --strip-producers -o cart.wasm cart.wasm && \
 uw8 pack -l 9 cart.wasm cart.uw8

examples/curlywas/control.cwa

@@ -1,5 +1,4 @@
-import "env.memory" memory(4);
+include "../include/microw8-api.cwa"
-import "env.printString" fn printString(i32);
 
 export fn upd() {
   printString(0x20000);

examples/curlywas/cracklebass.cwa

@@ -0,0 +1,55 @@
+// port of cracklebass by pestis (originally on TIC-80)
+
+include "../include/microw8-api.cwa"
+
+const MUSIC_DATA = 0x20000;
+
+export fn upd() {
+    let inline t = 32!32 * 6 / 100;
+    let inline p = t / 1024;
+
+    let channel:i32;
+
+    loop channels {
+        let inline e = t * channel?MUSIC_DATA / 8;
+        let lazy pattern = (8 * channel + p)?(MUSIC_DATA + 56);
+        let lazy n = !!pattern * (8 * pattern + e / 16 % 8)?MUSIC_DATA;
+        let inline prev_ctrl = (channel * 6)?80;
+        (channel * 6)?80 = if n {
+            let inline base_note = 12 + 12 * channel?(MUSIC_DATA + 4) + n;
+            let inline pitch_drop = e % 16 * channel?(MUSIC_DATA + 94);
+            let inline key_pattern = p?(MUSIC_DATA + 8*4 + 56);
+            let inline key = select(key_pattern, (8 * key_pattern + t / 128 % 8)?MUSIC_DATA, 1);
+            (channel * 6)?83 = base_note - pitch_drop / 4 + key;
+            prev_ctrl & 0xfc | (e / 8 & 2) | 1
+        } else {
+            prev_ctrl & 0xfe
+        };
+
+        branch_if (channel := channel + 1) < 4: channels;
+    }
+}
+
+data 80 {
+    i8(
+        0x44, 0, 0, 0, 0x50, 0x40,
+        0x4, 0x50, 0, 0, 0x80, 0x80,
+        0x40, 0x80, 0, 0, 0x40, 0x40,
+        0, 0, 0, 0, 0x50, 0x50
+    )
+}
+
+data MUSIC_DATA {
+    i8(
+ 16, 2, 8, 8, 1, 2, 2, 3, 1, 0,
+  1,13,16, 0, 1, 8, 1, 0, 1,13,
+ 16, 1, 1, 8, 1, 0, 8,13,13, 0,
+ 16,13, 1, 0, 1, 0, 1, 0, 1, 1,
+  1, 0, 0, 0, 1, 0,13, 1, 1, 1,
+  6, 8, 1, 1, 6, 8, 1, 1, 2, 1,
+  2, 1, 2, 0, 0, 0, 0, 3, 3, 3,
+  5, 0, 0, 2, 1, 2, 1, 2, 1, 2,
+  0, 4, 4, 0, 4, 4, 4, 4, 0, 0,
+  0, 0, 6, 6, 0, 0, 0, 8
+    )
+}

examples/curlywas/fireworks.cwa

@@ -1,11 +1,4 @@
-import "env.time" fn time() -> f32;
+include "../include/microw8-api.cwa"
-import "env.circle" fn circle(f32, f32, f32, i32);
-import "env.cls" fn cls(i32);
-import "env.randomSeed" fn seed(i32);
-import "env.randomf" fn randomf() -> f32;
-import "env.sin" fn sin(f32) -> f32;
-import "env.cos" fn cos(f32) -> f32;
-import "env.fmod" fn fmod(f32, f32) -> f32;
 
 export fn upd() {
     cls(0);
@@ -15,10 +8,10 @@ export fn upd() {
         let inline rocket = i #>> 9;
         let lazy local_time = fmod(time() + rocket as f32 / 5 as f32, 2 as f32);
         let lazy rocket = rocket + nearest(time() - local_time) as i32 * 10;
-        seed(rocket);
+        randomSeed(rocket);
         let inline x = randomf() * 645 as f32;
         let y = randomf() * 133 as f32;
-        let lazy angle = { seed(i); randomf() } * 44 as f32;
+        let lazy angle = { randomSeed(i); randomf() } * 44 as f32;
         let inline dx = sin(angle);
         let inline dy = cos(angle);
         let lazy dist = local_time * (randomf() * 44 as f32);

examples/curlywas/font_palette.cwa

@@ -1,38 +1,30 @@
-import "env.memory" memory(4);
+include "../include/microw8-api.cwa"
-
-import "env.cls" fn cls(i32);
-import "env.printString" fn printString(i32);
-import "env.printChar" fn printChar(i32);
-import "env.setCursorPosition" fn setCursor(i32, i32);
-import "env.setTextColor" fn setTextColor(i32);
-import "env.line" fn line(f32, f32, f32, f32, i32);
-import "env.isButtonTriggered" fn triggered(i32) -> i32;
 
 global mut mode: i32 = 0;
 
 export fn upd() {
     cls(0);
 
-    if triggered(4) {
+    if isButtonTriggered(BUTTON_A) {
         mode = !mode;
     }
 
     setTextColor(15);
-    printString(mode * 0x20000);
+    printString(mode * USER_MEM);
 
     let y: i32;
     loop y {
         line(0 as f32, (y * 9 + 39) as f32, (14+16*9) as f32, (y * 9 + 39) as f32, 1);
         line((y * 9 + 15) as f32, 24 as f32, (y * 9 + 15) as f32, (38+16*9) as f32, 1);
         setTextColor(15);
-        setCursor(y * 9 + 16, 24);
+        setCursorPosition(y * 9 + 16, 24);
         let lazy hexChar = select(y < 10, y + 48, y + 87);
         printChar(hexChar);
-        setCursor(0, y * 9 + 24+16);
+        setCursorPosition(0, y * 9 + 24+16);
         printChar(hexChar);
         let x = 0;
         loop x {
-            setCursor(x * 9 + 16, y * 9 + 24+16);
+            setCursorPosition(x * 9 + 16, y * 9 + 24+16);
             setTextColor(select(mode, x + y * 16, -9));
             if y >= 2 | mode {
                 printChar(select(mode, 0xa4, x + y * 16));
@@ -47,6 +39,6 @@ data 0 {
     "Default font:      (press " i8(0xcc) " for palette)" i8(5, 0)
 }
 
-data 0x20000 {
+data USER_MEM {
     "Default palette:   (press " i8(0xcc) " for font)" i8(5, 0)
 }

examples/curlywas/line.cwa

@@ -1,102 +1,15 @@
-import "env.memory" memory(4);
+include "../include/microw8-api.cwa"
-
-import "env.cls" fn cls(i32);
-import "env.setPixel" fn setPixel(i32, i32, i32);
-import "env.time" fn time() -> f32;
-import "env.sin" fn sin(f32) -> f32;
-import "env.cos" fn cos(f32) -> f32;
-
-fn line(x1: f32, y1: f32, x2: f32, y2: f32, col: i32) {
-    let swapTmp: f32;
-    if x1 > x2 {
-        swapTmp = x1;
-        x1 = x2;
-        x2 = swapTmp;
-        swapTmp = y1;
-        y1 = y2;
-        y2 = swapTmp;
-    }
-    if x1 < 0 as f32 & x2 >= 0 as f32 {
-        y1 = y1 + (y2 - y1) * -x1 / (x2 - x1);
-        x1 = 0 as f32;
-    }
-    if x1 < 320 as f32 & x2 >= 320 as f32 {
-        y2 = y2 + (y2 - y1) * (320 as f32 - x2) / (x2 - x1);
-        x2 = 320 as f32;
-    }
-
-    if y1 > y2 {
-        swapTmp = x1;
-        x1 = x2;
-        x2 = swapTmp;
-        swapTmp = y1;
-        y1 = y2;
-        y2 = swapTmp;
-    }
-    if y1 < 0 as f32 & y2 >= 0 as f32 {
-        x1 = x1 + (x2 - x1) * -y1 / (y2 - y1);
-        y1 = 0 as f32;
-    }
-    if y1 < 240 as f32 & y2 >= 240 as f32 {
-        x2 = x2 + (x2 - x1) * (240 as f32 - y2) / (y2 - y1);
-        y2 = 240 as f32;
-    }
-
-    let lazy dx = x2 - x1;
-    let lazy dy = y2 - y1;
-    let max_axis: f32;
-    let p: f32;
-    if abs(dx) >= dy {
-        max_axis = dx;
-        p = x1;
-    } else {
-        max_axis = dy;
-        p = y1;
-    }
-
-    let steps = floor(p + max_axis) as i32 - floor(p) as i32;
-    p = floor(p) + 0.5 - p;
-    if max_axis < 0 as f32 {
-        steps = -steps;
-        p = -p;
-        max_axis = -max_axis;
-    }
-    dx = dx / max_axis;
-    dy = dy / max_axis;
-
-    let f = min(max_axis, max(0 as f32, p));
-    setPixel((x1 + f * dx) as i32, (y1 + f * dy) as i32, col);
-
-    if !steps {
-        return;
-    }
-
-    x1 = x1 + (1 as f32 + p) * dx;
-    y1 = y1 + (1 as f32 + p) * dy;
-
-    p = p + steps as f32;
-
-    loop pixels {
-        if steps := steps - 1 {
-            setPixel(x1 as i32, y1 as i32, col);
-            x1 = x1 + dx;
-            y1 = y1 + dy;
-            branch pixels;
-        }
-    }
-
-    f = min(max_axis, p) - p;
-    setPixel((x1 + f * dx) as i32, (y1 + f * dy) as i32, col);
-}
 
 export fn upd() {
     cls(0);
-//    line(0.0, 4.0, 7.0, -2.0, 15);
-//    return;
     let i: i32;
     loop lines {
-        let angle = i as f32 * (3.1415 / 25.0) + time() * 0.1;
+        let angle = i as f32 * (3.1415 / 25.0) + time() * 0.125;
-        line(160.0, 120.0, 160.0 + sin(angle) * 100.0, 120.0 + cos(angle) * 100.0, 47);
+        line(
+            160 as f32, 120 as f32,
+            160 as f32 + sin(angle) * 100 as f32,
+            120 as f32 + cos(angle) * 100 as f32,
+            47);
         branch_if (i := i + 1)  < 50: lines;
     }
 }

examples/curlywas/simple_music.cwa

@@ -0,0 +1,38 @@
+include "../include/microw8-api.cwa"
+
+global mut frame = 0;
+
+export fn upd() {
+    if frame % 16 == 0 {
+        let ch: i32;
+        loop channels {
+            playNote(ch, (ch * 32 + (frame / 16) % 32)?0x20000);
+            branch_if ch := (ch + 1) % 4: channels;
+        }
+    }
+    frame = frame + 1;
+}
+
+data 0x20000 {
+    i8(
+        0x4e, 0x0, 0x0, 0x4c, 0x49, 0x0, 0x45, 0x47,
+        0x49, 0x47, 0x45, 0x44, 0x42, 0x0, 0x3d, 0x41,
+        0x44, 0x0, 0x0, 0x47, 0x49, 0x47, 0x45, 0x41,
+        0x44, 0x0, 0x0, 0x0, 0x42, 0x0, 0x0, 0x0,
+
+        0x25, 0, 0x49, 0x25, 0x25, 0, 0x49, 0x38,
+        0x25, 0, 0x49, 0x25, 0x25, 0, 0x49, 0x38,
+        0x25, 0, 0x49, 0x25, 0x25, 0, 0x49, 0x38,
+        0x25, 0, 0x49, 0x25, 0x25, 0, 0x49, 0x38,
+
+        0x2a, 0x0, 0x0, 0x0, 0x2d, 0x0, 0x0, 0x0,
+        0x2c, 0x0, 0x28, 0x0, 0x2a, 0x0, 0x0, 0x0,
+        0x25, 0x0, 0x0, 0x0, 0x29, 0x0, 0x0, 0x0,
+        0x2c, 0x0, 0x2d, 0x0, 0x2a, 0x0, 0x25, 0x0,
+
+        0x0, 0x0, 0x31, 0x0, 0x34, 0x0, 0x0, 0x36,
+        0x38, 0x39, 0x38, 0x34, 0x36, 0x0, 0x0, 0x0,
+        0x0, 0x3d, 0x3b, 0x39, 0x38, 0x0, 0x0, 0x0,
+        0x0, 0x39, 0x38, 0x39, 0x38, 0x0, 0x36, 0x0
+    )
+}

examples/curlywas/skipahead.cwa

@@ -1,12 +1,4 @@
-import "env.memory" memory(4);
+include "../include/microw8-api.cwa"
-
-import "env.rectangle" fn rect(f32, f32, f32, f32, i32);
-import "env.circle" fn circle(f32, f32, f32, i32);
-import "env.isButtonPressed" fn btn(i32) -> i32;
-import "env.random" fn random() -> i32;
-import "env.randomSeed" fn randomSeed(i32);
-import "env.cls" fn cls(i32);
-import "env.printInt" fn printInt(i32);
 
 global mut pz: i32 = 4;
 global mut px: f32 = 2.0;
@@ -19,7 +11,7 @@ export fn upd() {
     let inline zero = 0.0;
 
     let lazy control_speed = 0.03125;
-    s = s + 0.1875 - (f + control_speed) * btn(4 <| cls(4)) as f32;
+    s = s + 0.1875 - (f + control_speed) * isButtonPressed(4 <| cls(4)) as f32;
     f = f * 0.5625;
 
     printInt(pz);
@@ -33,8 +25,8 @@ export fn upd() {
         
         let inline c = (z & 1) * -2;
         let inline yf = y as f32;
-        rect(rx, yf, rw, yf / 6 as f32, c + 1);
+        rectangle(rx, yf, rw, yf / 6 as f32, c + 1);
-        rect(rx, yf, rw, 1 as f32, c - 4);
+        rectangle(rx, yf, rw, 1 as f32, c - 4);
 
         if y == 180 & py > zero {
             if x > w | x < zero {
@@ -51,7 +43,7 @@ export fn upd() {
     circle(160 as f32, 160 as f32 + py, 22 as f32, -28);
     circle((160 - 6) as f32, (160 - 6) as f32 + py, 6 as f32, -26);
 
-    px = px + (btn(3) - btn(2)) as f32 * control_speed;
+    px = px + (isButtonPressed(3) - isButtonPressed(2)) as f32 * control_speed;
     py = py + s;
     pz = pz + 1;
 }

examples/curlywas/steadyon.cwa

@@ -0,0 +1,38 @@
+// Steady On Tim, It's Only A Budget Game
+// by Gasman / Hooy-Program
+// ported to MicroW8 by exoticorn/icebird
+
+include "../include/microw8-api.cwa"
+
+fn melody(t: i32, T: i32) -> i32 {
+    let inline riff_pos = abs(((T&31) - 16) as f32) as i32;
+    let lazy shift = ((1-((T>>5)&3))%2-1) as f32 / 6 as f32;
+
+    let inline note_count = 5 - (T >= 512);
+    let inline octave = (riff_pos/5) as f32;
+    let inline riff_note = 5514 >> (riff_pos % note_count * 4) & 15;
+    let inline melody_freq = pow(2 as f32, shift + octave - (riff_note as f32 / 12 as f32));
+    let inline melody = (t as f32 * melody_freq) as i32 & 128;
+    
+    let inline arp_note = ((0x85>>((t>>12)%3*4)) & 15) - 1;
+    let inline arp_freq = pow(2 as f32, shift + (arp_note as f32 / 12 as f32));
+    let inline arp_vol = (T >= 256) * (12-T%12);
+    let inline arpeggio = ((t as f32 * arp_freq) as i32 & 128) * arp_vol / 12;
+    
+    melody + arpeggio
+}
+
+export fn snd(t: i32) -> f32 {
+    let lazy T = t/10000;
+    
+    let inline mel_arp = melody(t, T)/3 + melody(t, T-3)/5;
+
+    let inline bass_vol = (T >= 128) & (197 >> (T % 8));
+    let inline bass_freq = pow(2 as f32, (((T & 4) * ((T & 7) - 1)) as f32 / 24 as f32 - 5 as f32));
+    let inline bass = ((t as f32 * bass_freq) as i32 & 63) * bass_vol;
+
+    let inline snare_ish = (random() & 31) * (8 - (T + 4) % 8) / 8;
+
+    let inline sample = mel_arp + bass + snare_ish;
+    sample as f32 / 255 as f32
+}

examples/curlywas/technotunnel.cwa

@@ -1,25 +1,26 @@
-import "env.memory" memory(4);
+include "../include/microw8-api.cwa"
-import "env.sin" fn sin(f32) -> f32;
-import "env.time" fn time() -> f32;
 
 export fn upd() {
-    let i: i32;
+    let x: i32;
+    let y: i32;
     loop screen {
         let inline t = time() / 2 as f32;
-        let lazy o = sin(t) * 0.8;
+        let lazy o = sin(t) * 0.75;
-        let lazy q = (i % 320) as f32 - 160.1;
+        let inline q = x as f32 - 160.5;
-        let lazy w = (i / 320 - 120) as f32;
+        let inline w = (y - 120) as f32;
         let lazy r = sqrt(q*q + w*w);
         let lazy z = q / r;
         let lazy s = z * o + sqrt(z * z * o * o + 1 as f32 - o * o);
-        let lazy q2 = (z * s - o) * 10 as f32 + t;
+        let inline q2 = (z * s - o) * 10 as f32 + t;
-        let lazy w2 = w / r * s * 10 as f32 + t;
+        let inline w2 = w / r * s * 10 as f32 + t;
-        let lazy s2 = s * 100 as f32 / r;
+        let inline s2 = s * 100 as f32 / r;
-        i?120 = max(
+        let inline color = max(
             0 as f32, 
             ((q2 as i32 ^ w2 as i32 & ((s2 + time()) * 10 as f32) as i32) & 5) as f32 *
                 (4 as f32 - s2) as f32
             ) as i32 - 32;
-        branch_if (i := i + 1) < 320*240: screen
+        setPixel(x, y, color);
+        branch_if x := (x + 1) % 320: screen;
+        branch_if y := (y + 1) % 320: screen;
     }
 }

examples/curlywas/tim_ges.cwa

@@ -0,0 +1,64 @@
+// Steady On Tim, It's Only A Budget Game
+// original bytebeat by Gasman / Hooy-Program
+// ported to MicroW8/GES by exoticorn/icebird
+
+import "env.memory" memory(4);
+
+fn melody(ch: i32, t: i32, T: i32) {
+    let lazy riff_pos = abs(((T&31) - 16) as f32) as i32;
+    let lazy shift = ((1-((T>>5)&3))%2-1) * 2;
+
+    let inline note_count = 5 - (T >= 512);
+    let inline octave = (riff_pos/5) * 12;
+    let inline riff_note = 5514 >> (riff_pos % note_count * 4) & 15;
+    let inline melody_note = shift + octave - riff_note;
+
+    ch?1 = 230 - riff_pos * 14;
+    ch?3 = melody_note + 64;
+
+    let inline arp_note = shift + ((0x85>>((t/2)%3*4)) & 15) - 1;
+    80?3 = arp_note + 64;
+}
+
+export fn upd() {
+    let lazy t = 32!32 / (1000/60);
+    let lazy T = t / 7;
+    melody(98, t, T - 3);
+    melody(92, t, T);
+
+    80?0 = ((T >= 256) & (T/12+(T-3)/12)) * 2 | 0x48; // arp trigger
+
+    if T >= 128 {
+        let inline bass_step = T % 8;
+        86?3 = if bass_step / 2 == 2 {
+            86?0 = 0xd6;
+            81
+        } else {
+            86?0 = ((197 >> bass_step) & 1) | 0x48;
+            ((T & 4) * ((T & 7) - 1)) / 2 + 28
+        };
+    }
+}
+
+data 80 {
+    i8(
+        0, 0x90, 0, 0, 0, 0x90,
+        0, 0x4c, 0, 0, 0, 0x4c,
+        0x19, 0, 0, 0, 0, 0x4c,
+        0x19, 0, 0, 0, 0, 0x4c,
+        0xfa, 0x84,
+        0xc1, 0xc1, 0, 107, 0, 0x4c
+    )
+}
+
+/*
+include "../../platform/src/ges.cwa"
+
+import "env.pow" fn pow(f32, f32) -> f32;
+import "env.exp" fn exp(f32) -> f32;
+import "env.sin" fn sin(f32) -> f32;
+
+export fn snd(t: i32) -> f32 {
+    gesSnd(t)
+}
+*/

examples/curlywas/trainride.cwa

@@ -1,7 +1,4 @@
-import "env.memory" memory(2);
+include "../include/microw8-api.cwa"
-
-import "env.fmod" fn fmod(f32, f32) -> f32;
-import "env.time" fn time() -> f32;
 
 export fn upd() {
   let i: i32;

examples/curlywas/tunnel.cwa

@@ -1,7 +1,4 @@
-import "env.memory" memory(4);
+include "../include/microw8-api.cwa"
-
-import "env.atan2" fn atan2(f32, f32) -> f32;
-import "env.time" fn time() -> f32;
 
 export fn upd() {
     let i: i32;
@@ -12,7 +9,7 @@ export fn upd() {
         let inline d = 40000 as f32 / sqrt(x * x + y * y);
         let inline u = atan2(x, y) * (512.0 / 3.141);
         let inline c = ((i32.trunc_sat_f32_s(d + t * 2 as f32) ^ i32.trunc_sat_f32_s(u + t)) & 255) >> 4;
-        i?120 = c;
+        i?FRAMEBUFFER = c;
 
         branch_if (i := i + 1) < 320*240: pixels;
     }

examples/include/microw8-api.cwa

@@ -0,0 +1,51 @@
+// MicroW8 APIs, to be `include`d in CurlyWas sources
+import "env.memory" memory(4);
+
+import "env.sin" fn sin(f32) -> f32;
+import "env.cos" fn cos(f32) -> f32;
+import "env.tan" fn tan(f32) -> f32;
+import "env.asin" fn asin(f32) -> f32;
+import "env.acos" fn acos(f32) -> f32;
+import "env.atan" fn atan(f32) -> f32;
+import "env.atan2" fn atan2(f32, f32) -> f32;
+import "env.pow" fn pow(f32, f32) -> f32;
+import "env.log" fn log(f32) -> f32;
+import "env.fmod" fn fmod(f32, f32) -> f32;
+import "env.random" fn random() -> i32;
+import "env.randomf" fn randomf() -> f32;
+import "env.randomSeed" fn randomSeed(i32);
+import "env.cls" fn cls(i32);
+import "env.setPixel" fn setPixel(i32, i32, i32);
+import "env.getPixel" fn getPixel(i32, i32) -> i32;
+import "env.hline" fn hline(i32, i32, i32, i32);
+import "env.rectangle" fn rectangle(f32, f32, f32, f32, i32);
+import "env.circle" fn circle(f32, f32, f32, i32);
+import "env.line" fn line(f32, f32, f32, f32, i32);
+import "env.time" fn time() -> f32;
+import "env.isButtonPressed" fn isButtonPressed(i32) -> i32;
+import "env.isButtonTriggered" fn isButtonTriggered(i32) -> i32;
+import "env.printChar" fn printChar(i32);
+import "env.printString" fn printString(i32);
+import "env.printInt" fn printInt(i32);
+import "env.setTextColor" fn setTextColor(i32);
+import "env.setBackgroundColor" fn setBackgroundColor(i32);
+import "env.setCursorPosition" fn setCursorPosition(i32, i32);
+import "env.rectangle_outline" fn rectangle_outline(f32, f32, f32, f32, i32);
+import "env.circle_outline" fn circle_outline(f32, f32, f32, i32);
+import "env.exp" fn exp(f32) -> f32;
+import "env.playNote" fn playNote(i32, i32);
+
+const TIME_MS = 0x40;
+const GAMEPAD = 0x44;
+const FRAMEBUFFER = 0x78;
+const PALETTE = 0x13000;
+const FONT = 0x13400;
+const USER_MEM = 0x14000;
+const BUTTON_UP = 0x0;
+const BUTTON_DOWN = 0x1;
+const BUTTON_LEFT = 0x2;
+const BUTTON_RIGHT = 0x3;
+const BUTTON_A = 0x4;
+const BUTTON_B = 0x5;
+const BUTTON_X = 0x6;
+const BUTTON_Y = 0x7;

examples/include/microw8-api.wat

@@ -0,0 +1,53 @@
+;; MicroW8 APIs, in WAT (Wasm Text) format
+(import "env" "memory" (memory 4))
+
+(import "env" "sin" (func $sin (param f32) (result f32)))
+(import "env" "cos" (func $cos (param f32) (result f32)))
+(import "env" "tan" (func $tan (param f32) (result f32)))
+(import "env" "asin" (func $asin (param f32) (result f32)))
+(import "env" "acos" (func $acos (param f32) (result f32)))
+(import "env" "atan" (func $atan (param f32) (result f32)))
+(import "env" "atan2" (func $atan2 (param f32) (param f32) (result f32)))
+(import "env" "pow" (func $pow (param f32) (param f32) (result f32)))
+(import "env" "log" (func $log (param f32) (result f32)))
+(import "env" "fmod" (func $fmod (param f32) (param f32) (result f32)))
+(import "env" "random" (func $random (result i32)))
+(import "env" "randomf" (func $randomf (result f32)))
+(import "env" "randomSeed" (func $randomSeed (param i32)))
+(import "env" "cls" (func $cls (param i32)))
+(import "env" "setPixel" (func $setPixel (param i32) (param i32) (param i32)))
+(import "env" "getPixel" (func $getPixel (param i32) (param i32) (result i32)))
+(import "env" "hline" (func $hline (param i32) (param i32) (param i32) (param i32)))
+(import "env" "rectangle" (func $rectangle (param f32) (param f32) (param f32) (param f32) (param i32)))
+(import "env" "circle" (func $circle (param f32) (param f32) (param f32) (param i32)))
+(import "env" "line" (func $line (param f32) (param f32) (param f32) (param f32) (param i32)))
+(import "env" "time" (func $time (result f32)))
+(import "env" "isButtonPressed" (func $isButtonPressed (param i32) (result i32)))
+(import "env" "isButtonTriggered" (func $isButtonTriggered (param i32) (result i32)))
+(import "env" "printChar" (func $printChar (param i32)))
+(import "env" "printString" (func $printString (param i32)))
+(import "env" "printInt" (func $printInt (param i32)))
+(import "env" "setTextColor" (func $setTextColor (param i32)))
+(import "env" "setBackgroundColor" (func $setBackgroundColor (param i32)))
+(import "env" "setCursorPosition" (func $setCursorPosition (param i32) (param i32)))
+(import "env" "rectangle_outline" (func $rectangle_outline (param f32) (param f32) (param f32) (param f32) (param i32)))
+(import "env" "circle_outline" (func $circle_outline (param f32) (param f32) (param f32) (param i32)))
+(import "env" "exp" (func $exp (param f32) (result f32)))
+(import "env" "playNote" (func $playNote (param i32) (param i32)))
+
+;; to use defines, include this file with a preprocessor
+;; like gpp (https://logological.org/gpp).
+#define TIME_MS 0x40;
+#define GAMEPAD 0x44;
+#define FRAMEBUFFER 0x78;
+#define PALETTE 0x13000;
+#define FONT 0x13400;
+#define USER_MEM 0x14000;
+#define BUTTON_UP 0x0;
+#define BUTTON_DOWN 0x1;
+#define BUTTON_LEFT 0x2;
+#define BUTTON_RIGHT 0x3;
+#define BUTTON_A 0x4;
+#define BUTTON_B 0x5;
+#define BUTTON_X 0x6;
+#define BUTTON_Y 0x7;

logo.svg

@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="120"
+   height="120"
+   viewBox="0 0 120 120"
+   version="1.1"
+   id="svg5"
+   sodipodi:docname="logo.svg"
+   inkscape:version="1.1.1 (3bf5ae0d25, 2021-09-20, custom)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview7"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:document-units="px"
+     showgrid="false"
+     inkscape:zoom="3.6041667"
+     inkscape:cx="21.780347"
+     inkscape:cy="63.260116"
+     inkscape:window-width="1916"
+     inkscape:window-height="1041"
+     inkscape:window-x="0"
+     inkscape:window-y="18"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="layer1" />
+  <defs
+     id="defs2" />
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <rect
+       style="fill:#85a6b2;fill-rule:evenodd;fill-opacity:1"
+       id="rect31"
+       width="112.05161"
+       height="109.64198"
+       x="3.9731982"
+       y="6.3613" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:117.333px;line-height:1.25;font-family:'Fira Code';-inkscape-font-specification:'Fira Code Bold';fill:#ffffff;fill-opacity:1;stroke:none"
+       x="-6.2686396"
+       y="117.70291"
+       id="text2691"><tspan
+         sodipodi:role="line"
+         id="tspan2689"
+         x="-6.2686396"
+         y="117.70291">W8</tspan></text>
+    <circle
+       style="fill:#ffffff;stroke-width:1.32327"
+       id="path121"
+       cx="60.962471"
+       cy="6.7644148"
+       r="14.855442" />
+  </g>
+</svg>

platform/Cargo.lock

@@ -79,9 +79,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chumsky"
-version = "0.5.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2d3efff85e8572b1c3fa0127706af58c4fff8458f8d9436d54b1e97573c7a3f"
+checksum = "8d02796e4586c6c41aeb68eae9bfb4558a522c35f1430c14b40136c3706e09e4"
 dependencies = [
  "ahash 0.3.8",
 ]
@@ -146,14 +146,14 @@ checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
 [[package]]
 name = "curlywas"
 version = "0.1.0"
-source = "git+https://github.com/exoticorn/curlywas.git?rev=196719b#196719b35ef377cb7e001554b27ac5de013dcf2b"
+source = "git+https://github.com/exoticorn/curlywas.git?rev=aac7bbd#aac7bbd8786a26da0dcbe8320b1afefaf6086464"
 dependencies = [
  "anyhow",
  "ariadne",
  "chumsky",
  "pico-args",
- "wasm-encoder",
+ "wasm-encoder 0.10.0",
- "wasmparser",
+ "wasmparser 0.83.0",
 ]
 
 [[package]]
@@ -197,6 +197,21 @@ dependencies = [
  "ahash 0.7.6",
 ]
 
+[[package]]
+name = "heck"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d621efb26863f0e9924c6ac577e8275e5e6b77455db64ffa6c65c904e9e132c"
+dependencies = [
+ "unicode-segmentation",
+]
+
+[[package]]
+name = "id-arena"
+version = "2.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25a2bc672d1148e28034f176e01fffebb08b35768468cc954630da77a1449005"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -227,6 +242,15 @@ dependencies = [
  "rgb",
 ]
 
+[[package]]
+name = "log"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.4.4"
@@ -286,6 +310,24 @@ version = "0.5.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
 
+[[package]]
+name = "proc-macro2"
+version = "1.0.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7342d5883fbccae1cc37a2353b09c87c9b0f3afd73f5fb9bba687a1f733b029"
+dependencies = [
+ "unicode-xid",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "864d3e96a899863136fc6e99f3d7cae289dafe43bf2c5ac19b70df7210c0a145"
+dependencies = [
+ "proc-macro2",
+]
+
 [[package]]
 name = "rgb"
 version = "0.8.31"
@@ -304,6 +346,17 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "syn"
+version = "1.0.86"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
 [[package]]
 name = "time"
 version = "0.1.43"
@@ -323,6 +376,18 @@ dependencies = [
  "crunchy",
 ]
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e8820f5d777f6224dc4be3632222971ac30164d4a258d595640799554ebfd99"
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
+
 [[package]]
 name = "upkr"
 version = "0.1.0"
@@ -342,8 +407,9 @@ dependencies = [
  "pbr",
  "pico-args",
  "upkr",
- "wasm-encoder",
+ "walrus",
- "wasmparser",
+ "wasm-encoder 0.8.0",
+ "wasmparser 0.81.0",
 ]
 
 [[package]]
@@ -352,6 +418,32 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
 
+[[package]]
+name = "walrus"
+version = "0.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4eb08e48cde54c05f363d984bb54ce374f49e242def9468d2e1b6c2372d291f8"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "leb128",
+ "log",
+ "walrus-macro",
+ "wasmparser 0.77.0",
+]
+
+[[package]]
+name = "walrus-macro"
+version = "0.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a6e5bd22c71e77d60140b0bd5be56155a37e5bd14e24f5f87298040d0cc40d7"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
@@ -367,12 +459,33 @@ dependencies = [
  "leb128",
 ]
 
+[[package]]
+name = "wasm-encoder"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa9d9bf45fc46f71c407837c9b30b1e874197f2dc357588430b21e5017d290ab"
+dependencies = [
+ "leb128",
+]
+
+[[package]]
+name = "wasmparser"
+version = "0.77.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b35c86d22e720a07d954ebbed772d01180501afe7d03d464f413bb5f8914a8d6"
+
 [[package]]
 name = "wasmparser"
 version = "0.81.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "98930446519f63d00a836efdc22f67766ceae8dbcc1571379f2bcabc6b2b9abc"
 
+[[package]]
+name = "wasmparser"
+version = "0.83.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "718ed7c55c2add6548cca3ddd6383d738cd73b892df400e96b9aa876f0141d7a"
+
 [[package]]
 name = "winapi"
 version = "0.3.9"

platform/Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-curlywas = { git="https://github.com/exoticorn/curlywas.git", rev="196719b" }
+curlywas = { git="https://github.com/exoticorn/curlywas.git", rev="aac7bbd" }
 uw8-tool = { path="../uw8-tool" }
 anyhow = "1"
 lodepng = "3.4"

platform/src/ges.cwa

@@ -0,0 +1,222 @@
+const GesChannelState.Trigger = 0;
+const GesChannelState.EnvState = 1;
+const GesChannelState.EnvVol = 2;
+const GesChannelState.Phase = 4;
+const GesChannelState.Size = 8;
+
+const GesState.Filter = GesChannelState.Size * 4;
+const GesState.Size = GesState.Filter + 8*4;
+
+const GesStateOffset = 32;
+const GesBufferOffset = 32 + GesState.Size;
+
+export fn gesSnd(t: i32) -> f32 {
+    let baseAddr = 0!0x12c78;
+    if !(t & 127) {
+        let i: i32;
+        loop clearLoop {
+            (baseAddr + i)!GesBufferOffset = 0;
+            branch_if (i := i + 4) < 128*4: clearLoop;
+        }
+
+        let ch: i32;
+        loop channelLoop {
+            let lazy channelState = baseAddr + GesStateOffset + ch * GesChannelState.Size;
+            let lazy channelReg = baseAddr + ch * 6;
+            let envState = channelState?GesChannelState.EnvState;
+            let envVol = i32.load16_u(channelState, GesChannelState.EnvVol);
+
+            let lazy oldTrigger = channelState?GesChannelState.Trigger;
+            let lazy ctrl = channelReg?0;
+            if (oldTrigger ^ ctrl) & (ctrl | 2) & 3 {
+                envState = 1;
+                envVol = 0;
+            }
+            channelState?GesChannelState.Trigger = ctrl;
+
+            if envState {
+                let lazy attack = channelReg?4 & 15;
+                envVol = envVol + 12 * pow(1.675, (15 - attack) as f32) as i32;
+                if envVol >= 65535 {
+                    envVol = 65535;
+                    envState = 0;
+                }
+            } else {
+                let inline decay = (channelReg - (ctrl & 1))?5 >> 4;
+                let inline dec = 8 * pow(1.5625, (15 - decay) as f32) as i32;
+                envVol = envVol - ((dec * (envVol + 8192)) >> 16);
+                let inline sustain = (channelReg?5 & 15) << 12;
+                let lazy targetVol = (ctrl & 1) * sustain;
+                if envVol < targetVol {
+                    envVol = targetVol;
+                }
+            }
+            channelState?GesChannelState.EnvState = envState;
+
+            i32.store16(envVol, channelState, GesChannelState.EnvVol);
+
+            let inline note = i32.load16_u(channelReg, 2);
+            let lazy freq = 440 as f32 * pow(2.0, (note - 69*256) as f32 / (12*256) as f32);
+            let phaseInc = (freq * (65536.0 / 44100.0)) as i32;
+
+            let phase = channelState!GesChannelState.Phase;
+
+            let inline pulseWidth = channelReg?1;
+            let phaseShift = (pulseWidth - 128) * 255;
+            let invPhaseInc = 1 as f32 / phaseInc as f32;
+
+            i = 0;
+            let wave = ctrl >> 6;
+            if wave < 2 {
+                if wave {
+                    let pulsePhase1 = pulseWidth << 23;
+                    let pulsePhase2 = (511 - pulseWidth) << 23;
+                    loop sawLoop {
+                        let p = (phase ^ 32768) << 16;
+                        let saw = (p >> 16) - polyBlep(phase, invPhaseInc, -32767);
+                        let saw2 = select(p #>= pulsePhase1 & p #< pulsePhase2, -saw, saw);
+                        let saw2 = saw2 -
+                            polyBlep((p - pulsePhase1) >> 16, invPhaseInc, -saw) -
+                            polyBlep((p - pulsePhase2) >> 16, invPhaseInc, saw);
+                        (baseAddr + i)!(GesBufferOffset + 128*4) = saw2;
+                        phase = phase + phaseInc;
+                        branch_if (i := i + 4) < 64*4: sawLoop;
+                    }
+                }
+                else
+                {
+                    let pulsePhase = 32768 + pulseWidth * 128;
+                    loop rectLoop {
+                        (baseAddr + i)!(GesBufferOffset + 128*4) = select((phase & 65535) < pulsePhase, -32768, 32767) -
+                            polyBlep(phase, invPhaseInc, -32767) -
+                            polyBlep(phase - pulsePhase, invPhaseInc, 32767);
+                        phase = phase + phaseInc;
+                        branch_if (i := i + 4) < 64*4: rectLoop;
+                    }
+                }
+            } else {
+                if wave == 2 {
+                    let scale = pulseWidth + 256;
+                    loop triLoop {
+                        let s = phase << 16;
+                        s = (s ^ (s >> 31));
+                        s = (s >> 8) * scale;
+                        s = (s ^ (s >> 31));
+                        (baseAddr + i)!(GesBufferOffset + 128*4) = (s >> 15) - 32768;
+                        phase = phase + phaseInc;
+                        branch_if (i := i + 4) < 64*4: triLoop;
+                    }
+                } else {
+                    loop noiseLoop {
+                        let s = phase >> 12;
+                        let inline pulse = ((phase >> 8) & 255) >= pulseWidth;
+                        s = s * 0x6746ba73;
+                        s = s ^ (s >> 15) * pulse;
+                        (baseAddr + i)!(GesBufferOffset + 128*4) = (s * 0x835776c7) >> 16;
+                        phase = phase + phaseInc;
+                        branch_if (i := i + 4) < 64*4: noiseLoop;
+                    }
+                }
+            }
+
+            channelState!GesChannelState.Phase = phase;
+
+            if ctrl & 32 {
+                let lazy modSrc = (ch - 1) & 3;
+                let inline channelState = baseAddr + GesStateOffset + modSrc * GesChannelState.Size;
+                let inline channelReg = baseAddr + modSrc * 6;
+
+                let inline note = i32.load16_u(channelReg, 2);
+                let inline freq = 440 as f32 * pow(2.0, (note - 69*256) as f32 / (12*256) as f32);
+                let phaseInc = (freq * (65536.0 / 44100.0)) as i32;
+
+                let phase = channelState!GesChannelState.Phase;
+                if modSrc > ch {
+                    phase = phase - (phaseInc << 6);
+                }
+
+                i = 0;
+                loop ringLoop {
+                    let s = phase << 16;
+                    s = (s ^ (s >> 31));
+                    (baseAddr + i)!(GesBufferOffset + 128*4) = ((baseAddr + i)!(GesBufferOffset + 128*4) * ((s >> 15) - 32768)) >> 15;
+                    phase = phase + phaseInc;
+                    branch_if (i := i + 4) < 64*4: ringLoop;
+                }
+            }
+
+            let channelVol = ((baseAddr + (ch >> 1))?24 >> ((ch & 1) * 4)) & 15;
+            envVol = envVol * channelVol / 15;
+
+            let leftVol = (select(ctrl & 16, 0x3d5b, 0x6a79) >> (ch * 4)) & 15;
+            let rightVol = 16 - leftVol;
+
+            let lazy filter = (ctrl >> 2) & 3;
+
+            i = 0;
+            if filter < 2 {
+                if filter {
+                    let f = (4096 as f32 - min(4096 as f32, 4096 as f32 * exp(freq * (-8.0 * 3.141 / 44100.0)))) as i32;
+                    let low = (baseAddr + ch * 8)!(GesStateOffset + GesState.Filter);
+                    loop filterLoop {
+                        let in = ((baseAddr + i)!(GesBufferOffset + 128*4) * envVol) >> 18;
+                        low = low + (((in - low) * f) >> 12);
+                        (baseAddr + i * 2)!GesBufferOffset = (baseAddr + i * 2)!GesBufferOffset + ((low * leftVol) >> 4);
+                        (baseAddr + i * 2)!(GesBufferOffset + 4) = (baseAddr + i * 2)!(GesBufferOffset + 4) + ((low * rightVol) >> 4);
+                        branch_if (i := i + 4) < 64*4: filterLoop;
+                        (baseAddr + ch * 8)!(GesStateOffset + GesState.Filter) = low;
+                        (baseAddr + ch * 8)!(GesStateOffset + GesState.Filter + 4) = 0;
+                    }
+                } else {
+                    loop mixLoop {
+                        let sample = ((baseAddr + i)!(GesBufferOffset + 128*4) * envVol) >> 18;
+                        (baseAddr + i * 2)!GesBufferOffset = (baseAddr + i * 2)!GesBufferOffset + ((sample * leftVol) >> 4);
+                        (baseAddr + i * 2)!(GesBufferOffset + 4) = (baseAddr + i * 2)!(GesBufferOffset + 4) + ((sample * rightVol) >> 4);
+                        branch_if (i := i + 4) < 64*4: mixLoop;
+                        (baseAddr + ch * 8)!(GesStateOffset + GesState.Filter) = sample;
+                        (baseAddr + ch * 8)!(GesStateOffset + GesState.Filter + 4) = 0;
+                    }
+                }
+            } else {
+                filter = filter - 2;
+                let ctrl = (baseAddr + filter)?26;
+                let note = i32.load16_u(baseAddr + filter * 2, 28);
+                let inline freq = 440 as f32 * pow(2.0, (note - 69*256) as f32 / (12*256) as f32);
+                let F = (8192 as f32 * sin(min(0.25, freq / 44100 as f32) * 3.1415)) as i32;
+                let Q = 8192 - (ctrl >> 4) * (7000/15);
+                let Qlimit = (8192*4096/F - F/2) * 3 / 4;
+                if Q > Qlimit {
+                    Q = Qlimit;
+                }
+                let low_out = ctrl & 1;
+                let high_out = (ctrl >> 1) & 1;
+                let band_out = (ctrl >> 2) & 1;
+                let low = (baseAddr + ch * 8)!(GesStateOffset + GesState.Filter);
+                let band = (baseAddr + ch * 8)!(GesStateOffset + GesState.Filter + 4);
+                loop filterLoop {
+                    let in = ((baseAddr + i)!(GesBufferOffset + 128*4) * envVol) >> 18;
+
+                    let high = in - low - ((band * Q) >> 12);
+                    band = band + ((F * high) >> 12);
+                    low = low + ((F * band) >> 12);
+
+                    let sample = low * low_out + high * high_out + band * band_out;
+                    (baseAddr + i * 2)!GesBufferOffset = (baseAddr + i * 2)!GesBufferOffset + ((sample * leftVol) >> 4);
+                    (baseAddr + i * 2)!(GesBufferOffset + 4) = (baseAddr + i * 2)!(GesBufferOffset + 4) + ((sample * rightVol) >> 4);
+                    branch_if (i := i + 4) < 64*4: filterLoop;
+                    (baseAddr + ch * 8)!(GesStateOffset + GesState.Filter) = low;
+                    (baseAddr + ch * 8)!(GesStateOffset + GesState.Filter + 4) = band;
+                }
+            }
+
+            branch_if (ch := ch + 1) < 4: channelLoop;
+        }
+    }
+    ((baseAddr + (t & 127) * 4)!GesBufferOffset) as f32 / 32768 as f32
+}
+
+fn polyBlep(transientPhase: i32, invPhaseInc: f32, magnitude: i32) -> i32 {
+    let lazy t = ((transientPhase << 16) >> 16) as f32 * invPhaseInc;
+    let lazy x = max(0 as f32, 1 as f32 - abs(t));
+    (f32.copysign(x * x, t) * magnitude as f32) as i32
+}

platform/src/ges_only.cwa

@@ -0,0 +1,6 @@
+import "env.memory" memory(1);
+import "env.sin" fn sin(f32) -> f32;
+import "env.pow" fn pow(f32, f32) -> f32;
+import "env.exp" fn exp(f32) -> f32;
+
+include "ges.cwa"

platform/src/main.rs

@@ -11,13 +11,13 @@ fn main() -> Result<()> {
     convert_font()?;
 
     println!("Compiling loader module");
-    let loader = curlywas::compile_file("src/loader.cwa", curlywas::Options::default())?;
+    let loader = curlywas::compile_file("src/loader.cwa", curlywas::Options::default()).0?;
     File::create("bin/loader.wasm")?.write_all(&loader)?;
 
     println!("Loader (including base module): {} bytes", loader.len());
 
     println!("Compiling platform module");
-    let platform = curlywas::compile_file("src/platform.cwa", curlywas::Options::default())?;
+    let platform = curlywas::compile_file("src/platform.cwa", curlywas::Options::default()).0?;
     println!("Compressing platform module");
     let platform = uw8_tool::pack(
         &platform,

platform/src/platform.cwa

@@ -1,6 +1,9 @@
 import "env.memory" memory(4);
 
+import "env.sin" fn sin(f32) -> f32;
 import "env.cos" fn cos(f32) -> f32;
+import "env.pow" fn pow(f32, f32) -> f32;
+import "env.exp" fn exp(f32) -> f32;
 
 export fn time() -> f32 {
     (0!64) as f32 / 1000 as f32
@@ -256,6 +259,11 @@ export fn line(x1: f32, y1: f32, x2: f32, y2: f32, col: i32) {
         p = y1;
     }
 
+    if max_axis == 0 as f32 {
+        setPixel(x1 as i32, y1 as i32, col);
+        return;
+    }
+
     let steps = floor(p + max_axis) as i32 - floor(p) as i32;
     p = floor(p) + 0.5 - p;
     if max_axis < 0 as f32 {
@@ -267,7 +275,7 @@ export fn line(x1: f32, y1: f32, x2: f32, y2: f32, col: i32) {
     dy = dy / max_axis;
 
     let f = min(max_axis, max(0 as f32, p));
-    setPixel((x1 + f * dx) as i32, (y1 + f * dy) as i32, col);
+    setPixel(i32.trunc_sat_f32_s(x1 + f * dx), i32.trunc_sat_f32_s(y1 + f * dy), col);
 
     if !steps {
         return;
@@ -280,7 +288,7 @@ export fn line(x1: f32, y1: f32, x2: f32, y2: f32, col: i32) {
 
     loop pixels {
         if steps := steps - 1 {
-            setPixel(x1 as i32, y1 as i32, col);
+            setPixel(i32.trunc_sat_f32_s(x1), i32.trunc_sat_f32_s(y1), col);
             x1 = x1 + dx;
             y1 = y1 + dy;
             branch pixels;
@@ -288,7 +296,7 @@ export fn line(x1: f32, y1: f32, x2: f32, y2: f32, col: i32) {
     }
 
     f = min(max_axis, p) - p;
-    setPixel((x1 + f * dx) as i32, (y1 + f * dy) as i32, col);
+    setPixel(i32.trunc_sat_f32_s(x1 + f * dx), i32.trunc_sat_f32_s(y1 + f * dy), col);
 }
 
 //////////
@@ -331,6 +339,11 @@ fn printSingleChar(char: i32) {
         return;
     }
 
+    if char == 7 {
+        80?0 = 80?0 ^ 2;
+        return;
+    }
+
     if char == 8 {
         textCursorX = textCursorX - 8;
         if !graphicsText & textCursorX < 0 {
@@ -495,6 +508,32 @@ export fn setCursorPosition(x: i32, y: i32) {
     textCursorY = y * scale;
 }
 
+///////////
+// SOUND //
+///////////
+
+include "ges.cwa"
+
+export fn playNote(channel: i32, note: i32) {
+    (channel * 6)?80 = (channel * 6)?80 & 0xfe ^ if note {
+        (channel * 6)?83 = note & 127;
+        2 | !(note >> 7)
+    } else {
+        0
+    };
+}
+
+data 80 {
+    i8(
+        0x80, 0xc0, 0, 81, 0xa0, 0x50,
+        0xc4, 0, 0, 69, 0x60, 0x40,
+        0x44, 0xb0, 0, 69, 0x90, 0x43,
+        0x4, 0xf0, 0, 69, 0xa4, 0x44,
+        0xff, 0xff,
+        1, 1, 0, 100, 0, 100
+    )
+}
+
 ///////////
 // SETUP //
 ///////////
@@ -503,6 +542,13 @@ export fn endFrame() {
     68!4 = 68!0;
 }
 
+fn memclr(base: i32, size: i32) {
+    loop bytes {
+        (base + (size := size - 1))?0 = 0;
+        branch_if size: bytes;
+    }
+}
+
 start fn setup() {
     let i: i32 = 12*16*3-1;
     let avg: f32;
@@ -535,10 +581,19 @@ start fn setup() {
         branch_if (i := i - 1) >= 0: expand_sweetie;
     }
 
+    memclr(0, 64);
+    memclr(112, 8);
+    memclr(0x14000, 0x2c000);
+
+
     cls(0);
     randomSeed(random());
 }
 
+data 0x12c78 {
+    i32(80)
+}
+
 data 0x13000+192*4 {
     i32(
         0x2c1c1a,

release/make-release

@@ -36,6 +36,8 @@ for dir in build/*; do
         cp $example $dir/examples
     done
 
+    cp -r ../examples/include $dir/include
+
     mkdir $dir/carts
     for example in $dir/examples/*; do
         build/microw8-linux/uw8 pack -l 9 $example $dir/carts/$(basename ${example%.*}).uw8

site/config.toml

@@ -18,7 +18,7 @@ highlight_theme = "ascetic-white"
 [extra]
 # Put all your custom variables here
 juice_logo_name = "MicroW8"
-juice_logo_path = "microw8.svg"
+juice_logo_path = "img/microw8.svg"
 juice_extra_menu = [
     { title = "Github", link = "https://github.com/exoticorn/microw8" }
 ]

site/content/_index.md

@@ -15,19 +15,61 @@ The initial motivation behind MicroW8 was to explore whether there was a way to
 * Gamepad input (D-Pad + 4 Buttons)
 
 ## Examples
-* [Fireworks](v0.1pre5#AgwvgP+M59snqjl4CMKw5sqm1Zw9yJCbSviMjeLUdHus2a3yl/a99+uiBeqZgP/2jqSjrLjRk73COMM6OSLpsxK8ugT1kuk/q4hQUqqPpGozHoa0laulzGGcahzdfdJsYaK1sIdeIYS9M5PnJx/Wk9H+PvWEPy2Zvv7I6IW7Fg==) (127 bytes): Some fireworks to welcome 2022.
+* [Fireworks](v0.1.2#AgwvgP+M59snqjl4CMKw5sqm1Zw9yJCbSviMjeLUdHus2a3yl/a99+uiBeqZgP/2jqSjrLjRk73COMM6OSLpsxK8ugT1kuk/q4hQUqqPpGozHoa0laulzGGcahzdfdJsYaK1sIdeIYS9M5PnJx/Wk9H+PvWEPy2Zvv7I6IW7Fg==) (127 bytes): Some fireworks to welcome 2022.
-* [Skip Ahead](v0.1pre5#AgyfpZ80wkW28kiUZ9VIK4v+RPnVxqjK1dz2BcDoNyQPsS2g4OgEzkTe6jyoAfFOmqKrS8SM2aRljBal9mjNn8i4fP9eBK+RehQKxxGtJa9FqftvqEnh3ez1YaYxqj7jgTdzJ/WAYVmKMovBT1myrX3FamqKSOgMsNedLhVTLAhQup3sNcYEjGNo8b0HZ5+AgMgCwYRGCe//XQOMAaAAzqDILgmpEZ/43RKHcQpHEQwbURfNQJpadJe2sz3q5FlQnTGXQ9oSMokidhlC+aR/IpNHieuBGLhFZ2GfnwVQ0geBbQpTPA==) (229 bytes): A port of my [TIC-80 256byte game](http://tic80.com/play?cart=1735) from LoveByte'21
+* [Skip Ahead](v0.1.2#AgyfpZ80wkW28kiUZ9VIK4v+RPnVxqjK1dz2BcDoNyQPsS2g4OgEzkTe6jyoAfFOmqKrS8SM2aRljBal9mjNn8i4fP9eBK+RehQKxxGtJa9FqftvqEnh3ez1YaYxqj7jgTdzJ/WAYVmKMovBT1myrX3FamqKSOgMsNedLhVTLAhQup3sNcYEjGNo8b0HZ5+AgMgCwYRGCe//XQOMAaAAzqDILgmpEZ/43RKHcQpHEQwbURfNQJpadJe2sz3q5FlQnTGXQ9oSMokidhlC+aR/IpNHieuBGLhFZ2GfnwVQ0geBbQpTPA==) (229 bytes): A port of my [TIC-80 256byte game](http://tic80.com/play?cart=1735) from LoveByte'21
-* [OhNoAnotherTunnel](v0.1pre4#Ag95rdCB5Ww5NofyQaKF4P1mrNRso4azgiem4hK99Gh8OMzSpFq3NsNDo7O7pqln10D11l9uXr/ritw7OEzKwbEfCdvaRnS2Z0Kz0iDEZt/gIqOdvFmxsL1MjPQ4XInPbUJpQUonhQq29oP2omFabnQxn0bzoK7mZjcwc5GetHG+hGajkJcRr8oOnjfCol8RD+ha33GYtPnut+GLe4ktzf5UxZwGs6oT9qqC61lRDakN) (177 bytes): A port of my [entry](http://tic80.com/play?cart=1871) in the Outline'21 bytebattle final
+* [OhNoAnotherTunnel](v0.1.2#AgPP1oEFvPzY/rBZwTumtYn37zeMFgpir1Bkn91jsNcp26VzoUpkAOOJTtnzVBfW+/dGnnIdbq/irBUJztY5wuua80DORTYZndgdwZHcSk15ajc4nyO0g1A6kGWyW56oZk0iPYJA9WtUmoj0Plvy1CGwIZrMe57X7QZcdqc3u6zjTA41Tpiqi9vnO3xbhi8o594Vx0XPXwVzpYq1ZCTYenfAGaXKkDmAFJqiVIsiCg==) (175 bytes): A port of my [entry](http://tic80.com/play?cart=1871) in the Outline'21 bytebattle final
-* [Technotunnel](v0.1pre4#AqL8HeK1M9dn2nWNIF5vaq/Vh64pMt5nJIFoFKpBMPUsGtDtpqjo1JbT9LzPhAxCqJ7Yh4TA6oTGd4xhLowf+cWZMY73+7AZmfXJJsBi4cej/hH+4wlAgxFIrnOYnr/18IpnZbsHf0eGm1BhahX74+cVR0TRmNQmYC7GhCNS3mv/3MJn74lCj7t28aBJPjEZhP9fGXdG2u5Egh/Tjdg=) (158 bytes): A port of my [entry](https://tic80.com/play?cart=1873) in the Outline'21 bytebattle quater final
+* [Technotunnel](v0.1.2#AhPXpq894LaUhp5+HQf39f39/Jc8g5zUrBSc0uyKh36ivskczhY84h55zL8gWpkdvKuRQI+KIt80isKzh8jkM8nILcx0RUvyk8yjE8TgNsgkcORVI0RY5k3qE4ySjaycxa2DVZH61UWZuLsCouuwT7I80TbmmetQSbMywJ/avrrCZIAH0UzQfvOiCJNG48NI0FFY1vjB7a7dcp8Uqg==) (157 bytes): A port of my [entry](https://tic80.com/play?cart=1873) in the Outline'21 bytebattle quater final
-* [Font & Palette](v0.1pre4#AgKaeeOuwg5gCKvFIeiitEwMpUI2rymEcu+DDB1vMu9uBoufvUxIr4Y5p4Jj2ukoNO4PE7QS5cN1ZyDMCRfSzYIGZxKlN2J6NKEWK7KVPk9wVUgn1Ip+hsMinWgEO8ETKfPuHoIa4kjI+ULFOMad7vd3rt/lh1Vy9w+R2MXG/7T61d3c7C6KY+eQNS0eW3ys4iU8R6SycuWZuuZ2Sg3Qxp826s+Kt+2qBojpzNOSoyFqyrVyYMTKEkSl0BZOj59Cs1hPm5bq0F1MmVhGAzMhW9V4YeAe): Just a simple viewer for the default font and palette.
+* [Font & Palette](v0.1.2#At/p39+IBnj6ry1TRe7jzVy2A4tXgBvmoW2itzoyF2aM28pGy5QDiKxqrk8l9sbWZLtnAb+jgOfU+9QhpuyCAkhN6gPOU481IUL/df96vNe3h288Dqwhd3sfFpothIVFsMwRK72kW2hiR7zWsaXyy5pNmjR6BJk4piWx9ApT1ZwoUajhk6/zij6itq/FD1U3jj/J3MOwqZ2ef8Bv6ZPQlJIYVf62icGa69wS6SI1qBpIFiF14F8PcztRVbKIxLpT4ArCS6nz6FPnyUkqATGSBNPJ): Just a simple viewer for the default font and palette.
+
+Examplers for older versions:
+
 * [Technotunnel B/W](v0.1pre2#AQrDAQHAAQIBfwp9A0AgAUEAsiABQcACb7JDmhkgQ5MiBCAEIASUIAFBwAJtQfgAa7IiBSAFlJKRIgaVIgcgByAAskHQD7KVIgIQAEPNzEw/lCIDlCAHIAeUIAOUIAOUQQGykiADIAOUk5GSIgiUIAOTQQqylCACkiIJqCAFIAaVIAiUQQqylCACkiIKqHMgCEEyspQgBpUiCyACkkEUspSocUEFcbJBArIgC5OUQRaylJeoOgB4IAFBAWoiAUGA2ARIDQALCw==) (199 bytes uncompressed): A port of my [entry](https://tic80.com/play?cart=1873) in the Outline'21 bytebattle quater final (older MicroW8 version with monochrome palette)
 * [XorScroll](v0.1pre2#AQovAS0BAX8DQCABIAFBwAJvIABBCm1qIAFBwAJtczoAeCABQQFqIgFBgNgESA0ACws=) (50 bytes uncompressed): A simple scrolling XOR pattern. Fun fact: This is the pre-loaded effect when entering a bytebattle.
 * [CircleWorm](v0.1pre2#AQp7AXkCAX8CfUEgEA0DQCABskEEspUiAkECspUgALJBiCeylSIDQQWylJIQAEEBspJBoAGylCACQQOylSADQQSylJIQAEEBspJB+ACylCADQRGylCACQQKylJIQAEECspJBELKUIAFBAmxBP2oQEiABQQFqIgFBP0gNAAsL) (126 bytes uncompressed): Just a test for the circle fill function.
 
 ## Versions
 
-* [v0.1pre1](v0.1pre1)
+### v0.2.0-rc2
-* [v0.1pre2](v0.1pre2)
+
-* [v0.1pre3](v0.1pre3)
+* [Web runtime](v0.2.0-rc2)
-* [v0.1pre4](v0.1pre4)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc2/microw8-0.2.0-rc2-linux.tgz)
-* [v0.1pre5](v0.1pre5)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc2/microw8-0.2.0-rc2-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc2/microw8-0.2.0-rc2-windows.zip)
+
+Changes:
+
+* fix timing issues of sound playback, especially on systems with large sound buffers
+
+### v0.2.0-rc1
+
+* [Web runtime](v0.2.0-rc1)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc1/microw8-0.2.0-rc1-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc1/microw8-0.2.0-rc1-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc1/microw8-0.2.0-rc1-windows.zip)
+
+Changes:
+
+* [add sound support](docs#sound)
+* "integer constant cast to float" literal syntax in CurlyWas (ex. `1_f` is equivalent to `1 as f32`)
+
+Known issues:
+
+* timing accuracy/update frequency of sound support currently depends on sound buffer size
+
+### v0.1.2
+
+* [Web runtime](v0.1.2)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-windows.zip)
+
+Changes:
+
+* add option to `uw8 run` to run the cart in the browser using the web runtime
+* CurlyWas: implement `include` support
+* CurlyWas: implement support for constants
+* fix crash when trying to draw zero sized line
+
+### Older versions
+
+[Find older versions here.](versions)

site/content/docs.md

@@ -18,9 +18,12 @@ The memory has to be imported as `env` `memory` and has a maximum size of 256kb
 00000-00040: user memory
 00040-00044: time since module start in ms
 00044-0004c: gamepad state
-0004c-00078: reserved
+0004c-00050: reserved
+00050-00070: sound data (synced to sound thread)
+00070-00078: reserved
 00078-12c78: frame buffer
-12c78-13000: reserved
+12c78-12c7c: sound registers/work area base address (for sndGes function)
+12c7c-13000: reserved
 13000-13400: palette
 13400-13c00: font
 13c00-14000: reserved
@@ -47,7 +50,7 @@ Returns the arccosine of `x`.
 
 Returns the arctangent of `x`.
 
-### fn atan2(y: f32, y: f32) -> f32
+### fn atan2(y: f32, x: f32) -> f32
 
 Returns the angle between the point `(x, y)` and the positive x-axis.
 
@@ -105,7 +108,7 @@ as a cheap random-access PRNG (aka noise function).
 
 ## Graphics
 
-The default palette can be seen [here](../v0.1pre4#AgKaeeOuwg5gCKvFIeiitEwMpUI2rymEcu+DDB1vMu9uBoufvUxIr4Y5p4Jj2ukoNO4PE7QS5cN1ZyDMCRfSzYIGZxKlN2J6NKEWK7KVPk9wVUgn1Ip+hsMinWgEO8ETKfPuHoIa4kjI+ULFOMad7vd3rt/lh1Vy9w+R2MXG/7T61d3c7C6KY+eQNS0eW3ys4iU8R6SycuWZuuZ2Sg3Qxp826s+Kt+2qBojpzNOSoyFqyrVyYMTKEkSl0BZOj59Cs1hPm5bq0F1MmVhGAzMhW9V4YeAe). (Press Z on the keyboard to switch to palette.)
+The default palette can be seen [here](../v0.1.0#At/p39+IBnj6ry1TRe7jzVy2A4tXgBvmoW2itzoyF2aM28pGy5QDiKxqrk8l9sbWZLtnAb+jgOfU+9QhpuyCAkhN6gPOU481IUL/df96vNe3h288Dqwhd3sfFpothIVFsMwRK72kW2hiR7zWsaXyy5pNmjR6BJk4piWx9ApT1ZwoUajhk6/zij6itq/FD1U3jj/J3MOwqZ2ef8Bv6ZPQlJIYVf62icGa69wS6SI1qBpIFiF14F8PcztRVbKIxLpT4ArCS6nz6FPnyUkqATGSBNPJ). (Press Z on the keyboard to switch to palette.)
 
 The palette can be changed by writing 32bit rgba colors to addresses 0x13000-0x13400.
 
@@ -192,7 +195,7 @@ The integer time in milliseconds can also be read at address 0x40.
 
 ## Text output
 
-The default font can be seen [here](../v0.1pre4#AgKaeeOuwg5gCKvFIeiitEwMpUI2rymEcu+DDB1vMu9uBoufvUxIr4Y5p4Jj2ukoNO4PE7QS5cN1ZyDMCRfSzYIGZxKlN2J6NKEWK7KVPk9wVUgn1Ip+hsMinWgEO8ETKfPuHoIa4kjI+ULFOMad7vd3rt/lh1Vy9w+R2MXG/7T61d3c7C6KY+eQNS0eW3ys4iU8R6SycuWZuuZ2Sg3Qxp826s+Kt+2qBojpzNOSoyFqyrVyYMTKEkSl0BZOj59Cs1hPm5bq0F1MmVhGAzMhW9V4YeAe).
+The default font can be seen [here](../v0.1.0#At/p39+IBnj6ry1TRe7jzVy2A4tXgBvmoW2itzoyF2aM28pGy5QDiKxqrk8l9sbWZLtnAb+jgOfU+9QhpuyCAkhN6gPOU481IUL/df96vNe3h288Dqwhd3sfFpothIVFsMwRK72kW2hiR7zWsaXyy5pNmjR6BJk4piWx9ApT1ZwoUajhk6/zij6itq/FD1U3jj/J3MOwqZ2ef8Bv6ZPQlJIYVf62icGa69wS6SI1qBpIFiF14F8PcztRVbKIxLpT4ArCS6nz6FPnyUkqATGSBNPJ).
 
 The font can be changed by writing 1bpp 8x8 characters to addresses 0x13400-0x13c00.
 
@@ -229,7 +232,8 @@ Avoid the reserved control chars, they are currently NOPs but their behavior can
 | 2-3   | -          | Reserved                             |
 | 4     | -          | Switch to normal mode                |
 | 5     | -          | Switch to graphics mode              |
-| 6-7   | -          | Reserved                             |
+| 6     | -          | Reserved                             |
+| 7     | -          | Bell / trigger sound channel 0       |
 | 8     | -          | Move cursor left                     |
 | 9     | -          | Move cursor right                    |
 | 10    | -          | Move cursor down                     |
@@ -269,6 +273,130 @@ Sets the background color.
 
 Sets the cursor position. In normal mode `x` and `y` are multiplied by 8 to get the pixel position, in graphics mode they are used as is.
 
+## Sound
+
+### Low level operation
+
+MicroW8 actually runs two instances of your module. On the first instance, it calls `upd` and displays the framebuffer found in its memory. On the
+second instance, it calls `snd` instead with an incrementing sample index and expects that function to return sound samples for the left and right
+channel at 44100 Hz. If your module does not export a `snd` function, it calls the api function `sndGes` instead.
+
+As the only means of communication, 32 bytes starting at address 0x00050 are copied from main to sound memory after `upd` returns.
+
+By default, the `sndGes` function generates sound based on the 32 bytes at 0x00050. This means that in the default configuration those 32 bytes act
+as sound registers. See the `sndGes` function for the meaning of those registers.
+
+### export fn snd(sampleIndex: i32) -> f32
+
+If the module exports a `snd` function, it is called 88200 times per second to provide PCM sample data for playback (44.1kHz stereo).
+The `sampleIndex` will start at 0 and increments by 1 for each call. On even indices the function is expected to return a sample value for
+the left channel, on odd indices for the right channel.
+
+### fn playNote(channel: i32, note: i32)
+
+Triggers a note (1-127) on the given channel (0-3). Notes are semitones with 69 being A4 (same as MIDI). A note value of 0 stops the
+sound playing on that channel. A note value 128-255 will trigger note-128 and immediately stop it (playing attack+release parts of envelope).
+
+This function assumes the default setup, with the `sndGes` registers located at 0x00050.
+
+### fn sndGes(sampleIndex: i32) -> f32
+
+This implements a sound chip, generating sound based on 32 bytes of sound registers.
+
+The spec of this sound chip are:
+
+- 4 channels with individual volume control (0-15)
+- rect, saw, tri, noise wave forms selectable per channel
+- each wave form supports some kind of pulse width modulation
+- each channel has an optional automatic low pass filter, or can be sent to one of two manually controllable filters
+- each channel can select between a narrow and a wide stereo positioning. The two stereo positions of each channel are fixed.
+- optional ring modulation
+
+This function requires 1024 bytes of working memory, the first 32 bytes of which are interpreted as the sound registers.
+The base address of its working memory can be configured by writing the address to 0x12c78. It defaults to 0x00050.
+
+Here is a short description of the 32 sound registers.
+
+```
+00 - CTRL0
+06 - CTRL1
+0c - CTRL2
+12 - CTRL3
+  | 7  6 |   5  |   4  |  3  2  |    1    |    0    |
+  | wave | ring | wide | filter | trigger | note on |
+
+  note on: stay in decay/sustain part of envelope
+  trigger: the attack part of the envlope is triggered when either this changes
+           or note on is changed from 0 to 1.
+  filter : 0 - no filter
+           1 - fixed 6db 1-pole filter with cutoff two octaves above note
+           2 - programmable filter 0
+           3 - programmable filter 1
+  wide   : use wide stereo panning
+  ring   : ring modulate with triangle wave at frequency of previous channel
+  wave   : 0 - rectangle
+           1 - saw
+           2 - triangle
+           3 - noise
+
+01 - PULS0
+07 - PULS1
+0d - PULS2
+13 - PULS3
+  Pulse width 0-255, with 0 being the plain version of each wave form.
+  rectangle - 50%-100% pulse width
+  saw       - inverts 0%-100% of the saw wave form around the center
+  triangle  - morphs into an octave up triangle wave
+  noise     - blends into a decimated saw wave (just try it out)
+
+02 - FINE0
+08 - FINE1
+0e - FINE2
+14 - FINE3
+  Fractional note
+
+03 - NOTE0
+09 - NOTE1
+0f - NOTE2
+15 - NOTE3
+  Note, 69 = A4
+
+04 - ENVA0
+0a - ENVA1
+10 - ENVA2
+16 - ENVA3
+  | 7 6 5 4 | 3 2 1 0 |
+  | decay   | attack  |
+
+05 - ENVB0
+0b - ENVB1
+11 - ENVB2
+17 - ENVB3
+  | 7 6 5 4 | 3 2 1 0 |
+  | release | sustain |
+
+18 - VO01
+  | 7 6 5 4  | 3 2 1 0  |
+  | volume 1 | volume 0 |
+
+19 - VO23
+  | 7 6 5 4  | 3 2 1 0  |
+  | volume 3 | volume 2 |
+
+1a - FCTR0
+1b - FCTR1
+  | 7 6 5 4   | 3 | 2    | 1    | 0   |
+  | resonance | 0 | band | high | low |
+
+1c - FFIN0
+1e - FFIN1
+  cutoff frequency - fractional note
+
+1d - FNOT0
+1f - FNOT1
+  cutoff frequency - note
+```
+
 # The `uw8` tool
 
 The `uw8` tool included in the MicroW8 download includes a number of useful tools for developing MicroW8 carts. For small productions written in
@@ -284,6 +412,9 @@ Runs `<file>` which can be a binary WebAssembly module, an `.uw8` cart, a wat (W
 
 Options:
 
+* `-b`, `--browser`: Run in browser instead of using native runtime
+* `-t FRAMES`, `--timeout FRAMES`: Sets the timeout in frames (1/60s). If the start or update function runs longer than this it is forcibly interupted
+and execution of the cart is stopped. Defaults to 30 (0.5s)
 * `-w`, `--watch`: Reloads the given file every time it changes on disk.
 * `-p`, `--pack`: Pack the file into an `.uw8` cart before running it and print the resulting size.
 * `-u`, `--uncompressed`: Use the uncompressed `uw8` format for packing.
@@ -303,6 +434,27 @@ Options:
 * `-u`, `--uncompressed`: Use the uncompressed `uw8` format for packing.
 * `-l LEVEL`, `--level LEVEL`: Compression level (0-9). Higher compression levels are really slow.
 
+## `uw8 unpack`
+
+Usage:
+
+`uw8 unpack <infile> <outfile>`
+
+Unpacks a MicroW8 module into a standard WebAssembly module.
+
+## `uw8 compile`
+
+Usage:
+
+`uw8 compile [<options>] <infile> <outfile>`
+
+Compiles a [CurlyWas](https://github.com/exoticorn/curlywas) source file to a standard WebAssembly module. Most useful together with
+the `--debug` option to get a module that works well in the Chrome debugger.
+
+Options:
+
+* `-d`, `--debug`: Generate a name section to help debugging
+
 ## `uw8 filter-exports`
 
 Usage:
@@ -388,3 +540,33 @@ the first function in the file under the name `upd`.
 
 Same as version `01` except everything after the first byte is compressed
 using a [custom LZ compression scheme](https://github.com/exoticorn/upkr).
+
+# The web runtime
+
+Load carts into the web runtime either by using the "Load cart..." button, or by dragging the file
+onto the screen area.
+
+## Input
+
+For input, you can either use a standard gamepad or keyboard. On a keyboard use the arrow keys and the keys Z, X, A and S to emulate the A, B, X and Y buttons.
+
+## Video recording
+
+Press F10 to start recording, press again to stop. Then a download dialog will open for the video file.
+The file might miss some metadata needed to load in some video editing tools, in that case you can run
+it through ffmpeg like this `ffmpeg -i IN_NAME.webm -c copy -o OUT_NAME.webm to fix it up.
+
+To convert it to 1280x720, for example for a lovebyte upload, you can use:
+
+```
+ffmpeg -i IN.webm -vf "scale=960:720:flags=neighbor,pad=1280:720:160:0" -r 60 OUT.mp4
+```
+
+## Screenshot
+
+Pressing F9 opens a download dialog with a screenshot.
+
+## Devkit mode
+
+Append `#devkit` to the web runtime url in order to switch to devkit mode. In devkit mode, standard web assembly modules
+are loaded bypassing the loader, removing all size restrictions. At the same time, the memory limit is increased to 1GB.

site/content/versions.md

@@ -0,0 +1,42 @@
++++
+description = "Versions"
++++
+
+### v0.1.2
+
+* [Web runtime](v0.1.2)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-windows.zip)
+
+Changes:
+
+* add option to `uw8 run` to run the cart in the browser using the web runtime
+* CurlyWas: implement `include` support
+* CurlyWas: implement support for constants
+* fix crash when trying to draw zero sized line
+
+### v0.1.1
+
+* [Web runtime](v0.1.1)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.1.1/microw8-0.1.1-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.1.1/microw8-0.1.1-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.1.1/microw8-0.1.1-windows.zip)
+
+Changes:
+
+* implement more robust file watcher
+* add basic video recording on F10 in web runtime
+* add screenshot on F9
+* add watchdog to interrupt hanging update in native runtime
+* add devkit mode to web runtime
+* add unpack and compile commands to uw8
+* add support for table/element section in pack command
+* disable wayland support (caused missing window decorations in gnome)
+
+### v0.1.0
+
+* [Web runtime](v0.1.0)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.1.0/microw8-0.1.0-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.1.0/microw8-0.1.0-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.1.0/microw8-0.1.0-windows.zip)

site/static/img/microw8.svg

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<svg width="120" height="120" version="1.1" viewBox="0 0 120 120" xmlns="http://www.w3.org/2000/svg">
+ <path d="m3.9727 6.3613v27.945h7.8691l2.8281 66.549 6.9199-56.922h16.969l6.4375 56.922 4.1523-66.549h17.148l-9.5488 81.697h27.195c-4.1759-2.1972-7.3595-5.016-9.5234-8.4707-2.2464-3.6905-3.3691-7.6805-3.3691-11.973 0-4.7735 1.3845-8.9251 4.1523-12.455 2.7679-3.53 6.4981-6.3194 11.191-8.3652-4.2521-2.7277-7.3402-5.4948-9.2656-8.3027-1.8854-2.8481-2.8281-6.5783-2.8281-11.191 0-4.7334 1.223-8.8256 3.6699-12.275 2.4469-3.4498 5.7559-6.0981 9.9277-7.9434 4.212-1.8854 8.9647-2.8262 14.26-2.8262 5.2203 0 9.8397 0.84602 13.867 2.5234v-28.363h-40.227a14.855 14.855 0 0 1 0.019531 0.40234 14.855 14.855 0 0 1-14.855 14.855 14.855 14.855 0 0 1-14.855-14.855 14.855 14.855 0 0 1 0.052734-0.40234zm98.186 38.775c-3.0888 0-5.4939 0.863-7.2187 2.5879-1.6848 1.6848-2.5273 4.192-2.5273 7.5215 0 2.9283 0.98169 5.3538 2.9473 7.2793 1.9656 1.8854 5.0352 3.6113 9.207 5.1758 2.7277-2.0057 4.5928-3.971 5.5957-5.8965 1.0028-1.9656 1.5039-4.1129 1.5039-6.4395 0-2.9684-0.8017-5.4144-2.4062-7.3398-1.5644-1.9255-3.9326-2.8887-7.1016-2.8887zm-72.203 12.938-6.4902 57.93h12.393zm68.113 21.781c-2.4469 1.5644-4.3938 3.5502-5.8379 5.957-1.4441 2.4068-2.166 5.2741-2.166 8.6035 0 3.4498 1.0041 6.2781 3.0098 8.4844 2.0458 2.1662 5.0726 3.25 9.084 3.25 4.1317 0 7.142-1.1043 9.0274-3.3106 1.8854-2.2464 2.8281-4.8723 2.8281-7.8809 0-2.7679-0.56235-5.0153-1.6856-6.7402-1.0831-1.7249-2.7886-3.2096-5.1152-4.4531-2.3266-1.2836-5.3738-2.5864-9.1445-3.9102z" fill="#85a6b2" fill-rule="evenodd"/>
+</svg>

site/templates/index.html

@@ -4,7 +4,7 @@
         <section>
             <h1 class="text-center heading-text">A WebAssembly based fantasy console</h1>
         </section>
-        <a href="v0.1pre5">
+        <a href="v0.1.2">
             <img class="demonstration-gif" style="width:640px;height:480px;image-rendering:pixelated" src="img/technotunnel.png"></img>
         </a>
     </div>

src/filewatcher.rs

@@ -0,0 +1,55 @@
+use anyhow::{anyhow, bail, Result};
+use notify::{DebouncedEvent, RecommendedWatcher, Watcher};
+use std::{collections::BTreeSet, path::PathBuf, sync::mpsc, time::Duration};
+
+pub struct FileWatcher {
+    watcher: RecommendedWatcher,
+    watched_files: BTreeSet<PathBuf>,
+    directories: BTreeSet<PathBuf>,
+    rx: mpsc::Receiver<DebouncedEvent>,
+}
+
+impl FileWatcher {
+    pub fn new() -> Result<FileWatcher> {
+        let (tx, rx) = mpsc::channel();
+        let watcher = notify::watcher(tx, Duration::from_millis(100))?;
+        Ok(FileWatcher {
+            watcher,
+            watched_files: BTreeSet::new(),
+            directories: BTreeSet::new(),
+            rx,
+        })
+    }
+
+    pub fn add_file<P: Into<PathBuf>>(&mut self, path: P) -> Result<()> {
+        let path = path.into();
+        let parent = path.parent().ok_or_else(|| anyhow!("File has no parent"))?;
+
+        if !self.directories.contains(parent) {
+            self.watcher
+                .watch(parent, notify::RecursiveMode::NonRecursive)?;
+            self.directories.insert(parent.to_path_buf());
+        }
+
+        self.watched_files.insert(path);
+        Ok(())
+    }
+
+    pub fn poll_changed_file(&self) -> Result<Option<PathBuf>> {
+        let event = self.rx.try_recv();
+        match event {
+            Ok(DebouncedEvent::Create(path) | DebouncedEvent::Write(path)) => {
+                let handle = same_file::Handle::from_path(&path)?;
+                for file in &self.watched_files {
+                    if handle == same_file::Handle::from_path(file)? {
+                        return Ok(Some(path));
+                    }
+                }
+            }
+            Err(mpsc::TryRecvError::Disconnected) => bail!("File watcher disconnected"),
+            _ => (),
+        }
+
+        Ok(None)
+    }
+}

src/lib.rs

@@ -1,191 +1,22 @@
-use std::io::prelude::*;
+mod filewatcher;
-use std::path::Path;
+#[cfg(feature = "native")]
-use std::{fs::File, time::Instant};
+mod run_native;
+#[cfg(feature = "browser")]
+mod run_web;
+
+pub use filewatcher::FileWatcher;
+#[cfg(feature = "native")]
+pub use run_native::MicroW8;
+#[cfg(feature = "browser")]
+pub use run_web::RunWebServer;
 
 use anyhow::Result;
-use minifb::{Key, Window, WindowOptions};
-use wasmtime::{
-    Engine, GlobalType, Memory, MemoryType, Module, Mutability, Store, TypedFunc, ValType,
-};
 
-static GAMEPAD_KEYS: &'static [Key] = &[Key::Up, Key::Down, Key::Left, Key::Right, Key::Z, Key::X, Key::A, Key::S];
+pub trait Runtime {
-
+    fn is_open(&self) -> bool;
-pub struct MicroW8 {
+    fn set_timeout(&mut self, _timeout: u32) {
-    engine: Engine,
+        eprintln!("Warning: runtime doesn't support timeout");
-    loader_module: Module,
+    }
-    window: Window,
+    fn load(&mut self, module_data: &[u8]) -> Result<()>;
-    window_buffer: Vec<u32>,
+    fn run_frame(&mut self) -> Result<()>;
-    instance: Option<UW8Instance>,
-}
-
-struct UW8Instance {
-    store: Store<()>,
-    memory: Memory,
-    end_frame: TypedFunc<(), ()>,
-    update: TypedFunc<(), ()>,
-    start_time: Instant,
-    module: Vec<u8>
-}
-
-impl MicroW8 {
-    pub fn new() -> Result<MicroW8> {
-        let engine = wasmtime::Engine::default();
-
-        let loader_module =
-            wasmtime::Module::new(&engine, include_bytes!("../platform/bin/loader.wasm"))?;
-
-        let mut options = WindowOptions::default();
-        options.scale = minifb::Scale::X2;
-        options.scale_mode = minifb::ScaleMode::AspectRatioStretch;
-        options.resize = true;
-        let mut window = Window::new("MicroW8", 320, 240, options)?;
-        window.limit_update_rate(Some(std::time::Duration::from_micros(16666)));
-
-        Ok(MicroW8 {
-            engine,
-            loader_module,
-            window,
-            window_buffer: vec![0u32; 320 * 240],
-            instance: None,
-        })
-    }
-
-    pub fn is_open(&self) -> bool {
-        self.window.is_open() && !self.window.is_key_down(Key::Escape)
-    }
-
-    fn reset(&mut self) {
-        self.instance = None;
-        for v in &mut self.window_buffer {
-            *v = 0;
-        }
-    }
-
-    pub fn load_from_file<P: AsRef<Path>>(&mut self, path: P) -> Result<()> {
-        self.reset();
-
-        let mut module = vec![];
-        File::open(path)?.read_to_end(&mut module)?;
-        self.load_from_memory(&module)
-    }
-
-    pub fn load_from_memory(&mut self, module_data: &[u8]) -> Result<()> {
-        self.reset();
-
-        let mut store = wasmtime::Store::new(&self.engine, ());
-
-        let memory = wasmtime::Memory::new(&mut store, MemoryType::new(4, Some(4)))?;
-
-        let mut linker = wasmtime::Linker::new(&self.engine);
-        linker.define("env", "memory", memory.clone())?;
-
-        let loader_instance = linker.instantiate(&mut store, &self.loader_module)?;
-        let load_uw8 = loader_instance.get_typed_func::<i32, i32, _>(&mut store, "load_uw8")?;
-
-        let platform_data = include_bytes!("../platform/bin/platform.uw8");
-        memory.data_mut(&mut store)[..platform_data.len()].copy_from_slice(platform_data);
-        let platform_length =
-            load_uw8.call(&mut store, platform_data.len() as i32)? as u32 as usize;
-        let platform_module =
-            wasmtime::Module::new(&self.engine, &memory.data(&store)[..platform_length])?;
-
-        memory.data_mut(&mut store)[..module_data.len()].copy_from_slice(module_data);
-        let module_length = load_uw8.call(&mut store, module_data.len() as i32)? as u32 as usize;
-        let module = wasmtime::Module::new(&self.engine, &memory.data(&store)[..module_length])?;
-
-        linker.func_wrap("env", "acos", |v: f32| v.acos())?;
-        linker.func_wrap("env", "asin", |v: f32| v.asin())?;
-        linker.func_wrap("env", "atan", |v: f32| v.atan())?;
-        linker.func_wrap("env", "atan2", |x: f32, y: f32| x.atan2(y))?;
-        linker.func_wrap("env", "cos", |v: f32| v.cos())?;
-        linker.func_wrap("env", "exp", |v: f32| v.exp())?;
-        linker.func_wrap("env", "log", |v: f32| v.ln())?;
-        linker.func_wrap("env", "sin", |v: f32| v.sin())?;
-        linker.func_wrap("env", "tan", |v: f32| v.tan())?;
-        linker.func_wrap("env", "pow", |a: f32, b: f32| a.powf(b))?;
-        for i in 9..64 {
-            linker.func_wrap("env", &format!("reserved{}", i), || {})?;
-        }
-        for i in 0..16 {
-            linker.define(
-                "env",
-                &format!("g_reserved{}", i),
-                wasmtime::Global::new(
-                    &mut store,
-                    GlobalType::new(ValType::I32, Mutability::Const),
-                    0.into(),
-                )?,
-            )?;
-        }
-
-        let platform_instance = linker.instantiate(&mut store, &platform_module)?;
-
-        for export in platform_instance.exports(&mut store) {
-            linker.define(
-                "env",
-                export.name(),
-                export
-                    .into_func()
-                    .expect("platform surely only exports functions"),
-            )?;
-        }
-
-        let instance = linker.instantiate(&mut store, &module)?;
-        let end_frame = platform_instance.get_typed_func::<(), (), _>(&mut store, "endFrame")?;
-        let update = instance.get_typed_func::<(), (), _>(&mut store, "upd")?;
-
-        self.instance = Some(UW8Instance {
-            store,
-            memory,
-            end_frame,
-            update,
-            start_time: Instant::now(),
-            module: module_data.into()
-        });
-
-        Ok(())
-    }
-
-    pub fn run_frame(&mut self) -> Result<()> {
-        if let Some(mut instance) = self.instance.take() {
-            {
-                let time = instance.start_time.elapsed().as_millis() as i32;
-                let mut gamepad: u32 = 0;
-                for key in self.window.get_keys().unwrap_or(Vec::new()) {
-                    if let Some(index) = GAMEPAD_KEYS.iter().enumerate().find(|(_, &k)| k == key).map(|(i, _)| i) {
-                        gamepad |= 1 << index;
-                    }
-                }
-
-                let mem = instance.memory.data_mut(&mut instance.store);
-                mem[64..68].copy_from_slice(&time.to_le_bytes());
-                mem[68..72].copy_from_slice(&gamepad.to_le_bytes());
-            }
-
-            instance.update.call(&mut instance.store, ())?;
-            instance.end_frame.call(&mut instance.store, ())?;
-
-            let memory = instance.memory.data(&instance.store);
-            let framebuffer = &memory[120..];
-            let palette = &memory[0x13000..];
-            for i in 0..320 * 240 {
-                let offset = framebuffer[i] as usize * 4;
-                self.window_buffer[i] = 0xff000000
-                    | ((palette[offset + 0] as u32) << 16)
-                    | ((palette[offset + 1] as u32) << 8)
-                    | palette[offset + 2] as u32;
-            }
-
-            if self.window.is_key_pressed(Key::R, minifb::KeyRepeat::No) {
-                self.load_from_memory(&instance.module)?;
-            } else {
-                self.instance = Some(instance);
-            }
-        }
-
-        self.window
-            .update_with_buffer(&self.window_buffer, 320, 240)?;
-
-        Ok(())
-    }
 }

src/main.rs

@@ -1,35 +1,44 @@
 use std::fs::File;
 use std::io::prelude::*;
+use std::path::{Path, PathBuf};
 use std::process;
-use std::sync::mpsc;
-use std::time::Duration;
-use std::{
-    path::{Path, PathBuf},
-    process::exit,
-};
 
-use anyhow::{bail, Result};
+use anyhow::Result;
-use notify::{DebouncedEvent, Watcher};
 use pico_args::Arguments;
+#[cfg(feature = "native")]
 use uw8::MicroW8;
+#[cfg(feature = "browser")]
+use uw8::RunWebServer;
+#[cfg(any(feature = "native", feature = "browser"))]
+use uw8::Runtime;
 
 fn main() -> Result<()> {
     let mut args = Arguments::from_env();
 
-    match args.subcommand()?.as_ref().map(|s| s.as_str()) {
+    // try to enable ansi support in win10 cmd shell
+    #[cfg(target_os = "windows")]
+    let _ = ansi_term::enable_ansi_support();
+
+    match args.subcommand()?.as_deref() {
         Some("version") => {
             println!("{}", env!("CARGO_PKG_VERSION"));
             Ok(())
         }
+        #[cfg(any(feature = "native", feature = "browser"))]
         Some("run") => run(args),
         Some("pack") => pack(args),
+        Some("unpack") => unpack(args),
+        Some("compile") => compile(args),
         Some("filter-exports") => filter_exports(args),
         Some("help") | None => {
             println!("uw8 {}", env!("CARGO_PKG_VERSION"));
             println!();
             println!("Usage:");
-            println!("  uw8 run [-w/--watch] [-p/--pack] [-u/--uncompressed] [-l/--level] [-o/--output <out-file>] <file>");
+            #[cfg(any(feature = "native", feature = "browser"))]
+            println!("  uw8 run [-t/--timeout <frames>] [--b/--browser] [-w/--watch] [-p/--pack] [-u/--uncompressed] [-l/--level] [-o/--output <out-file>] <file>");
             println!("  uw8 pack [-u/--uncompressed] [-l/--level] <in-file> <out-file>");
+            println!("  uw8 unpack <in-file> <out-file>");
+            println!("  uw8 compile [-d/--debug] <in-file> <out-file>");
             println!("  uw8 filter-exports <in-wasm> <out-wasm>");
             Ok(())
         }
@@ -40,8 +49,10 @@ fn main() -> Result<()> {
     }
 }
 
+#[cfg(any(feature = "native", feature = "browser"))]
 fn run(mut args: Arguments) -> Result<()> {
     let watch_mode = args.contains(["-w", "--watch"]);
+    let timeout: Option<u32> = args.opt_value_from_str(["-t", "--timeout"])?;
 
     let mut config = Config::default();
     if args.contains(["-p", "--pack"]) {
@@ -63,36 +74,61 @@ fn run(mut args: Arguments) -> Result<()> {
         config.output_path = Some(path);
     }
 
+    #[cfg(feature = "native")]
+    let run_browser = args.contains(["-b", "--browser"]);
+    #[cfg(not(feature = "native"))]
+    let run_browser = args.contains(["-b", "--browser"]) || true;
+
+    let disable_audio = args.contains(["-m", "--disable-audio"]);
+
     let filename = args.free_from_os_str::<PathBuf, bool>(|s| Ok(s.into()))?;
 
-    let mut uw8 = MicroW8::new()?;
+    let mut watcher = uw8::FileWatcher::new()?;
 
-    let (tx, rx) = mpsc::channel();
+    use std::process::exit;
-    let mut watcher = notify::watcher(tx, Duration::from_millis(100))?;
 
-    if watch_mode {
+    let mut runtime: Box<dyn Runtime> = if !run_browser {
-        watcher.watch(&filename, notify::RecursiveMode::NonRecursive)?;
+        #[cfg(not(feature = "native"))]
-    }
+        unimplemented!();
-
+        #[cfg(feature = "native")]
-    if let Err(err) = start_cart(&filename, &mut uw8, &config) {
+        {
-        eprintln!("Load error: {}", err);
+            let mut microw8 = MicroW8::new()?;
-        if !watch_mode {
+            if disable_audio {
-            exit(1);
+                microw8.disable_audio();
+            }
+            Box::new(microw8)
         }
+    } else {
+        #[cfg(not(feature = "browser"))]
+        unimplemented!();
+        #[cfg(feature = "browser")]
+        Box::new(RunWebServer::new())
+    };
+
+    if let Some(timeout) = timeout {
+        runtime.set_timeout(timeout);
     }
 
-    while uw8.is_open() {
+    let mut first_run = true;
-        match rx.try_recv() {
+
-            Ok(DebouncedEvent::Create(_) | DebouncedEvent::Write(_)) => {
+    while runtime.is_open() {
-                if let Err(err) = start_cart(&filename, &mut uw8, &config) {
+        if first_run || watcher.poll_changed_file()?.is_some() {
-                    eprintln!("Load error: {}", err);
+            let (result, dependencies) = start_cart(&filename, &mut *runtime, &config);
+            if watch_mode {
+                for dep in dependencies {
+                    watcher.add_file(dep)?;
                 }
             }
-            Err(mpsc::TryRecvError::Disconnected) => bail!("File watcher disconnected"),
+            if let Err(err) = result {
-            _ => (),
+                eprintln!("Load error: {}", err);
+                if !watch_mode {
+                    exit(1);
+                }
+            }
+            first_run = false;
         }
 
-        if let Err(err) = uw8.run_frame() {
+        if let Err(err) = runtime.run_frame() {
             eprintln!("Runtime error: {}", err);
             if !watch_mode {
                 exit(1);
@@ -109,39 +145,99 @@ struct Config {
     output_path: Option<PathBuf>,
 }
 
-fn load_cart(filename: &Path, pack: &Option<uw8_tool::PackConfig>) -> Result<Vec<u8>> {
+fn load_cart(filename: &Path, config: &Config) -> (Result<Vec<u8>>, Vec<PathBuf>) {
-    let mut cart = vec![];
+    let mut dependencies = Vec::new();
-    File::open(filename)?.read_to_end(&mut cart)?;
+    fn inner(filename: &Path, config: &Config, dependencies: &mut Vec<PathBuf>) -> Result<Vec<u8>> {
-
+        let mut cart = match SourceType::of_file(filename)? {
-    if cart[0] >= 10 {
+            SourceType::Binary => {
-        let src = String::from_utf8(cart)?;
+                let mut cart = vec![];
-        cart = if src.chars().find(|c| !c.is_whitespace()) == Some('(') {
+                File::open(filename)?.read_to_end(&mut cart)?;
-            wat::parse_str(src)?
+                cart
-        } else {
+            }
-            curlywas::compile_str(&src, filename, curlywas::Options::default())?
+            SourceType::Wat => {
+                let cart = wat::parse_file(filename)?;
+                cart
+            }
+            SourceType::CurlyWas => {
+                let (module, deps) = curlywas::compile_file(filename, curlywas::Options::default());
+                *dependencies = deps;
+                module?
+            }
         };
+
+        if let Some(ref pack_config) = config.pack {
+            cart = uw8_tool::pack(&cart, pack_config)?;
+            println!("packed size: {} bytes", cart.len());
+        }
+
+        if let Some(ref path) = config.output_path {
+            File::create(path)?.write_all(&cart)?;
+        }
+
+        Ok(cart)
     }
 
-    if let Some(pack_config) = pack {
+    let result = inner(filename, config, &mut dependencies);
-        cart = uw8_tool::pack(&cart, pack_config)?;
+
-        println!("packed size: {} bytes", cart.len());
+    if dependencies.is_empty() {
+        dependencies.push(filename.to_path_buf());
     }
 
-    Ok(cart)
+    (result, dependencies)
 }
 
-fn start_cart(filename: &Path, uw8: &mut MicroW8, config: &Config) -> Result<()> {
+enum SourceType {
-    let cart = load_cart(filename, &config.pack)?;
+    Binary,
+    Wat,
+    CurlyWas,
+}
 
-    if let Some(ref path) = config.output_path {
+impl SourceType {
-        File::create(path)?.write_all(&cart)?;
+    fn of_file(filename: &Path) -> Result<SourceType> {
+        if let Some(extension) = filename.extension() {
+            if extension == "uw8" || extension == "wasm" {
+                return Ok(SourceType::Binary);
+            } else if extension == "wat" || extension == "wast" {
+                return Ok(SourceType::Wat);
+            } else if extension == "cwa" {
+                return Ok(SourceType::CurlyWas);
+            }
+        }
+
+        let mut cart = vec![];
+        File::open(filename)?.read_to_end(&mut cart)?;
+
+        let ty = if cart[0] < 10 {
+            SourceType::Binary
+        } else {
+            let src = String::from_utf8(cart)?;
+            if src.chars().find(|&c| !c.is_whitespace() && c != ';') == Some('(') {
+                SourceType::Wat
+            } else {
+                SourceType::CurlyWas
+            }
+        };
+        Ok(ty)
     }
+}
 
-    if let Err(err) = uw8.load_from_memory(&cart) {
+#[cfg(any(feature = "native", feature = "browser"))]
+fn start_cart(
+    filename: &Path,
+    runtime: &mut dyn Runtime,
+    config: &Config,
+) -> (Result<()>, Vec<PathBuf>) {
+    let (cart, dependencies) = load_cart(filename, config);
+    let cart = match cart {
+        Ok(cart) => cart,
+        Err(err) => return (Err(err), dependencies),
+    };
+
+    if let Err(err) = runtime.load(&cart) {
         eprintln!("Load error: {}", err);
-        Err(err)
+        (Err(err), dependencies)
     } else {
-        Ok(())
+        (Ok(()), dependencies)
     }
 }
 
@@ -160,13 +256,42 @@ fn pack(mut args: Arguments) -> Result<()> {
 
     let out_file = args.free_from_os_str::<PathBuf, bool>(|s| Ok(s.into()))?;
 
-    let cart = load_cart(&in_file, &Some(pack_config))?;
+    let cart = load_cart(
+        &in_file,
+        &Config {
+            pack: Some(pack_config),
+            output_path: None,
+        },
+    )
+    .0?;
 
     File::create(out_file)?.write_all(&cart)?;
 
     Ok(())
 }
 
+fn unpack(mut args: Arguments) -> Result<()> {
+    let in_file = args.free_from_os_str::<PathBuf, bool>(|s| Ok(s.into()))?;
+    let out_file = args.free_from_os_str::<PathBuf, bool>(|s| Ok(s.into()))?;
+
+    uw8_tool::unpack_file(&in_file, &out_file)
+}
+
+fn compile(mut args: Arguments) -> Result<()> {
+    let mut options = curlywas::Options::default();
+    if args.contains(["-d", "--debug"]) {
+        options = options.with_debug();
+    }
+
+    let in_file = args.free_from_os_str::<PathBuf, bool>(|s| Ok(s.into()))?;
+    let out_file = args.free_from_os_str::<PathBuf, bool>(|s| Ok(s.into()))?;
+
+    let module = curlywas::compile_file(in_file, options).0?;
+    File::create(out_file)?.write_all(&module)?;
+
+    Ok(())
+}
+
 fn filter_exports(mut args: Arguments) -> Result<()> {
     let in_file = args.free_from_os_str::<PathBuf, bool>(|s| Ok(s.into()))?;
     let out_file = args.free_from_os_str::<PathBuf, bool>(|s| Ok(s.into()))?;

src/run_native.rs

@@ -0,0 +1,505 @@
+use std::sync::{mpsc, Arc, Mutex};
+use std::time::Duration;
+use std::{thread, time::Instant};
+
+use anyhow::{anyhow, Result};
+use cpal::traits::*;
+use minifb::{Key, Window, WindowOptions};
+use rubato::Resampler;
+use wasmtime::{
+    Engine, GlobalType, Memory, MemoryType, Module, Mutability, Store, TypedFunc, ValType,
+};
+
+static GAMEPAD_KEYS: &[Key] = &[
+    Key::Up,
+    Key::Down,
+    Key::Left,
+    Key::Right,
+    Key::Z,
+    Key::X,
+    Key::A,
+    Key::S,
+];
+
+pub struct MicroW8 {
+    engine: Engine,
+    loader_module: Module,
+    window: Window,
+    window_buffer: Vec<u32>,
+    instance: Option<UW8Instance>,
+    timeout: u32,
+    disable_audio: bool,
+}
+
+struct UW8Instance {
+    store: Store<()>,
+    memory: Memory,
+    end_frame: TypedFunc<(), ()>,
+    update: Option<TypedFunc<(), ()>>,
+    start_time: Instant,
+    module: Vec<u8>,
+    watchdog: Arc<Mutex<UW8WatchDog>>,
+    sound: Option<Uw8Sound>,
+}
+
+impl Drop for UW8Instance {
+    fn drop(&mut self) {
+        if let Ok(mut watchdog) = self.watchdog.lock() {
+            watchdog.stop = true;
+        }
+    }
+}
+
+struct UW8WatchDog {
+    interupt: wasmtime::InterruptHandle,
+    timeout: u32,
+    stop: bool,
+}
+
+impl MicroW8 {
+    pub fn new() -> Result<MicroW8> {
+        let engine = wasmtime::Engine::new(wasmtime::Config::new().interruptable(true))?;
+
+        let loader_module =
+            wasmtime::Module::new(&engine, include_bytes!("../platform/bin/loader.wasm"))?;
+
+        let options = WindowOptions {
+            scale: minifb::Scale::X2,
+            scale_mode: minifb::ScaleMode::AspectRatioStretch,
+            resize: true,
+            ..Default::default()
+        };
+        let mut window = Window::new("MicroW8", 320, 240, options)?;
+        window.limit_update_rate(Some(std::time::Duration::from_micros(16666)));
+
+        Ok(MicroW8 {
+            engine,
+            loader_module,
+            window,
+            window_buffer: vec![0u32; 320 * 240],
+            instance: None,
+            timeout: 30,
+            disable_audio: false,
+        })
+    }
+
+    fn reset(&mut self) {
+        self.instance = None;
+        for v in &mut self.window_buffer {
+            *v = 0;
+        }
+    }
+
+    pub fn disable_audio(&mut self) {
+        self.disable_audio = true;
+    }
+}
+
+impl super::Runtime for MicroW8 {
+    fn is_open(&self) -> bool {
+        self.window.is_open() && !self.window.is_key_down(Key::Escape)
+    }
+
+    fn set_timeout(&mut self, timeout: u32) {
+        self.timeout = timeout;
+    }
+
+    fn load(&mut self, module_data: &[u8]) -> Result<()> {
+        self.reset();
+
+        let mut store = wasmtime::Store::new(&self.engine, ());
+
+        let memory = wasmtime::Memory::new(&mut store, MemoryType::new(4, Some(4)))?;
+
+        let mut linker = wasmtime::Linker::new(&self.engine);
+        linker.define("env", "memory", memory)?;
+
+        let loader_instance = linker.instantiate(&mut store, &self.loader_module)?;
+        let load_uw8 = loader_instance.get_typed_func::<i32, i32, _>(&mut store, "load_uw8")?;
+
+        let platform_data = include_bytes!("../platform/bin/platform.uw8");
+        memory.data_mut(&mut store)[..platform_data.len()].copy_from_slice(platform_data);
+        let platform_length =
+            load_uw8.call(&mut store, platform_data.len() as i32)? as u32 as usize;
+        let platform_module =
+            wasmtime::Module::new(&self.engine, &memory.data(&store)[..platform_length])?;
+
+        memory.data_mut(&mut store)[..module_data.len()].copy_from_slice(module_data);
+        let module_length = load_uw8.call(&mut store, module_data.len() as i32)? as u32 as usize;
+        let module = wasmtime::Module::new(&self.engine, &memory.data(&store)[..module_length])?;
+
+        add_native_functions(&mut linker, &mut store)?;
+
+        let platform_instance = instantiate_platform(&mut linker, &mut store, &platform_module)?;
+
+        let watchdog = Arc::new(Mutex::new(UW8WatchDog {
+            interupt: store.interrupt_handle()?,
+            timeout: self.timeout,
+            stop: false,
+        }));
+
+        {
+            let watchdog = watchdog.clone();
+            thread::spawn(move || loop {
+                thread::sleep(Duration::from_millis(17));
+                if let Ok(mut watchdog) = watchdog.lock() {
+                    if watchdog.stop {
+                        break;
+                    }
+                    if watchdog.timeout > 0 {
+                        watchdog.timeout -= 1;
+                        if watchdog.timeout == 0 {
+                            watchdog.interupt.interrupt();
+                        }
+                    }
+                } else {
+                    break;
+                }
+            });
+        }
+
+        let instance = linker.instantiate(&mut store, &module)?;
+        if let Ok(mut watchdog) = watchdog.lock() {
+            watchdog.timeout = 0;
+        }
+        let end_frame = platform_instance.get_typed_func::<(), (), _>(&mut store, "endFrame")?;
+        let update = instance.get_typed_func::<(), (), _>(&mut store, "upd").ok();
+
+        let sound = if self.disable_audio {
+            None
+        } else {
+            match init_sound(&self.engine, &platform_module, &module) {
+                Ok(sound) => {
+                    sound.stream.play()?;
+                    Some(sound)
+                }
+                Err(err) => {
+                    eprintln!("Failed to init sound: {}", err);
+                    None
+                }
+            }
+        };
+
+        self.instance = Some(UW8Instance {
+            store,
+            memory,
+            end_frame,
+            update,
+            start_time: Instant::now(),
+            module: module_data.into(),
+            watchdog,
+            sound,
+        });
+
+        Ok(())
+    }
+
+    fn run_frame(&mut self) -> Result<()> {
+        let mut result = Ok(());
+        if let Some(mut instance) = self.instance.take() {
+            let time = instance.start_time.elapsed().as_millis() as i32;
+            {
+                let mut gamepad: u32 = 0;
+                for key in self.window.get_keys() {
+                    if let Some(index) = GAMEPAD_KEYS
+                        .iter()
+                        .enumerate()
+                        .find(|(_, &k)| k == key)
+                        .map(|(i, _)| i)
+                    {
+                        gamepad |= 1 << index;
+                    }
+                }
+
+                let mem = instance.memory.data_mut(&mut instance.store);
+                mem[64..68].copy_from_slice(&time.to_le_bytes());
+                mem[68..72].copy_from_slice(&gamepad.to_le_bytes());
+            }
+
+            if let Ok(mut watchdog) = instance.watchdog.lock() {
+                watchdog.timeout = self.timeout;
+            }
+            if let Some(ref update) = instance.update {
+                result = update.call(&mut instance.store, ());
+            }
+            if let Ok(mut watchdog) = instance.watchdog.lock() {
+                watchdog.timeout = 0;
+            }
+            instance.end_frame.call(&mut instance.store, ())?;
+
+            let memory = instance.memory.data(&instance.store);
+
+            let mut sound_regs = [0u8; 32];
+            sound_regs.copy_from_slice(&memory[80..112]);
+            if let Some(ref sound) = instance.sound {
+                sound.tx.send(RegisterUpdate {
+                    time,
+                    data: sound_regs,
+                })?;
+            }
+
+            let framebuffer = &memory[120..(120 + 320 * 240)];
+            let palette = &memory[0x13000..];
+            for (i, &color_index) in framebuffer.iter().enumerate() {
+                let offset = color_index as usize * 4;
+                self.window_buffer[i] = 0xff000000
+                    | ((palette[offset] as u32) << 16)
+                    | ((palette[offset + 1] as u32) << 8)
+                    | palette[offset + 2] as u32;
+            }
+
+            if self.window.is_key_pressed(Key::R, minifb::KeyRepeat::No) {
+                self.load(&instance.module)?;
+            } else if result.is_ok() {
+                self.instance = Some(instance);
+            }
+        }
+
+        self.window
+            .update_with_buffer(&self.window_buffer, 320, 240)?;
+
+        result?;
+        Ok(())
+    }
+}
+
+fn add_native_functions(
+    linker: &mut wasmtime::Linker<()>,
+    store: &mut wasmtime::Store<()>,
+) -> Result<()> {
+    linker.func_wrap("env", "acos", |v: f32| v.acos())?;
+    linker.func_wrap("env", "asin", |v: f32| v.asin())?;
+    linker.func_wrap("env", "atan", |v: f32| v.atan())?;
+    linker.func_wrap("env", "atan2", |x: f32, y: f32| x.atan2(y))?;
+    linker.func_wrap("env", "cos", |v: f32| v.cos())?;
+    linker.func_wrap("env", "exp", |v: f32| v.exp())?;
+    linker.func_wrap("env", "log", |v: f32| v.ln())?;
+    linker.func_wrap("env", "sin", |v: f32| v.sin())?;
+    linker.func_wrap("env", "tan", |v: f32| v.tan())?;
+    linker.func_wrap("env", "pow", |a: f32, b: f32| a.powf(b))?;
+    for i in 10..64 {
+        linker.func_wrap("env", &format!("reserved{}", i), || {})?;
+    }
+    for i in 0..16 {
+        linker.define(
+            "env",
+            &format!("g_reserved{}", i),
+            wasmtime::Global::new(
+                &mut *store,
+                GlobalType::new(ValType::I32, Mutability::Const),
+                0.into(),
+            )?,
+        )?;
+    }
+
+    Ok(())
+}
+
+fn instantiate_platform(
+    linker: &mut wasmtime::Linker<()>,
+    store: &mut wasmtime::Store<()>,
+    platform_module: &wasmtime::Module,
+) -> Result<wasmtime::Instance> {
+    let platform_instance = linker.instantiate(&mut *store, &platform_module)?;
+
+    for export in platform_instance.exports(&mut *store) {
+        linker.define(
+            "env",
+            export.name(),
+            export
+                .into_func()
+                .expect("platform surely only exports functions"),
+        )?;
+    }
+
+    Ok(platform_instance)
+}
+
+struct RegisterUpdate {
+    time: i32,
+    data: [u8; 32],
+}
+
+struct Uw8Sound {
+    stream: cpal::Stream,
+    tx: mpsc::SyncSender<RegisterUpdate>,
+}
+
+fn init_sound(
+    engine: &wasmtime::Engine,
+    platform_module: &wasmtime::Module,
+    module: &wasmtime::Module,
+) -> Result<Uw8Sound> {
+    let mut store = wasmtime::Store::new(engine, ());
+
+    let memory = wasmtime::Memory::new(&mut store, MemoryType::new(4, Some(4)))?;
+
+    let mut linker = wasmtime::Linker::new(engine);
+    linker.define("env", "memory", memory)?;
+    add_native_functions(&mut linker, &mut store)?;
+
+    let platform_instance = instantiate_platform(&mut linker, &mut store, platform_module)?;
+    let instance = linker.instantiate(&mut store, module)?;
+
+    let snd = instance
+        .get_typed_func::<(i32,), f32, _>(&mut store, "snd")
+        .or_else(|_| platform_instance.get_typed_func::<(i32,), f32, _>(&mut store, "gesSnd"))?;
+
+    let host = cpal::default_host();
+    let device = host
+        .default_output_device()
+        .ok_or_else(|| anyhow!("No audio output device available"))?;
+    let mut configs: Vec<_> = device
+        .supported_output_configs()?
+        .filter(|config| {
+            config.channels() == 2 && config.sample_format() == cpal::SampleFormat::F32
+        })
+        .collect();
+    configs.sort_by_key(|config| {
+        let rate = 44100
+            .max(config.min_sample_rate().0)
+            .min(config.max_sample_rate().0);
+        if rate >= 44100 {
+            rate - 44100
+        } else {
+            (44100 - rate) * 1000
+        }
+    });
+    let config = configs
+        .into_iter()
+        .next()
+        .ok_or_else(|| anyhow!("Could not find float output config"))?;
+    let sample_rate = cpal::SampleRate(44100)
+        .max(config.min_sample_rate())
+        .max(config.max_sample_rate());
+    let config = config.with_sample_rate(sample_rate);
+    let buffer_size = match *config.buffer_size() {
+        cpal::SupportedBufferSize::Unknown => cpal::BufferSize::Default,
+        cpal::SupportedBufferSize::Range { min, max } => {
+            cpal::BufferSize::Fixed(65536.max(min).min(max))
+        }
+    };
+    let config = cpal::StreamConfig {
+        buffer_size,
+        ..config.config()
+    };
+
+    let sample_rate = config.sample_rate.0 as usize;
+
+    let (tx, rx) = mpsc::sync_channel::<RegisterUpdate>(30);
+
+    struct Resampler {
+        resampler: rubato::FftFixedIn<f32>,
+        input_buffers: Vec<Vec<f32>>,
+        output_buffers: Vec<Vec<f32>>,
+        output_index: usize,
+    }
+    let mut resampler: Option<Resampler> = if sample_rate == 44100 {
+        None
+    } else {
+        let rs = rubato::FftFixedIn::new(44100, sample_rate, 128, 1, 2)?;
+        let input_buffers = rs.input_buffer_allocate();
+        let output_buffers = rs.output_buffer_allocate();
+        Some(Resampler {
+            resampler: rs,
+            input_buffers,
+            output_buffers,
+            output_index: usize::MAX,
+        })
+    };
+
+    let mut sample_index = 0;
+    let mut pending_updates: Vec<RegisterUpdate> = Vec::with_capacity(30);
+    let mut current_time = 0;
+    let stream = device.build_output_stream(
+        &config,
+        move |mut outer_buffer: &mut [f32], _| {
+            let mut first_update = true;
+            while let Ok(update) = rx.try_recv() {
+                if first_update {
+                    current_time += update.time.wrapping_sub(current_time) / 8;
+                    first_update = false;
+                }
+                pending_updates.push(update);
+            }
+
+            while !outer_buffer.is_empty() {
+                while pending_updates
+                    .first()
+                    .into_iter()
+                    .any(|u| u.time.wrapping_sub(current_time) <= 0)
+                {
+                    let update = pending_updates.remove(0);
+                    memory.write(&mut store, 80, &update.data).unwrap();
+                }
+
+                let duration = if let Some(update) = pending_updates.first() {
+                    ((update.time.wrapping_sub(current_time) as usize) * sample_rate + 999) / 1000
+                } else {
+                    outer_buffer.len()
+                };
+                let step_size = (duration.max(64) * 2).min(outer_buffer.len());
+
+                let mut buffer = &mut outer_buffer[..step_size];
+
+                {
+                    let mem = memory.data_mut(&mut store);
+                    mem[64..68].copy_from_slice(&current_time.to_le_bytes());
+                }
+
+                if let Some(ref mut resampler) = resampler {
+                    while !buffer.is_empty() {
+                        let copy_size = resampler.output_buffers[0]
+                            .len()
+                            .saturating_sub(resampler.output_index)
+                            .min(buffer.len() / 2);
+                        if copy_size == 0 {
+                            resampler.input_buffers[0].clear();
+                            resampler.input_buffers[1].clear();
+                            for _ in 0..resampler.resampler.input_frames_next() {
+                                resampler.input_buffers[0]
+                                    .push(snd.call(&mut store, (sample_index,)).unwrap_or(0.0));
+                                resampler.input_buffers[1]
+                                    .push(snd.call(&mut store, (sample_index + 1,)).unwrap_or(0.0));
+                                sample_index = sample_index.wrapping_add(2);
+                            }
+
+                            resampler
+                                .resampler
+                                .process_into_buffer(
+                                    &resampler.input_buffers,
+                                    &mut resampler.output_buffers,
+                                    None,
+                                )
+                                .unwrap();
+                            resampler.output_index = 0;
+                        } else {
+                            for i in 0..copy_size {
+                                buffer[i * 2] =
+                                    resampler.output_buffers[0][resampler.output_index + i];
+                                buffer[i * 2 + 1] =
+                                    resampler.output_buffers[1][resampler.output_index + i];
+                            }
+                            resampler.output_index += copy_size;
+                            buffer = &mut buffer[copy_size * 2..];
+                        }
+                    }
+                } else {
+                    for v in buffer {
+                        *v = snd.call(&mut store, (sample_index,)).unwrap_or(0.0);
+                        sample_index = sample_index.wrapping_add(1);
+                    }
+                }
+
+                outer_buffer = &mut outer_buffer[step_size..];
+                current_time =
+                    current_time.wrapping_add((step_size * 500 / sample_rate).max(1) as i32);
+            }
+        },
+        move |err| {
+            dbg!(err);
+        },
+    )?;
+
+    Ok(Uw8Sound { stream, tx })
+}

src/run_web.rs

@@ -0,0 +1,89 @@
+use anyhow::Result;
+use std::{
+    net::SocketAddr,
+    sync::{Arc, Mutex},
+    thread,
+};
+use tokio::sync::broadcast;
+use tokio_stream::{wrappers::BroadcastStream, Stream, StreamExt};
+use warp::{http::Response, Filter};
+
+pub struct RunWebServer {
+    cart: Arc<Mutex<Vec<u8>>>,
+    tx: broadcast::Sender<()>,
+}
+
+impl RunWebServer {
+    pub fn new() -> RunWebServer {
+        let cart = Arc::new(Mutex::new(Vec::new()));
+        let (tx, _) = broadcast::channel(1);
+
+        let server_cart = cart.clone();
+        let server_tx = tx.clone();
+        thread::spawn(move || {
+            let rt = tokio::runtime::Builder::new_current_thread()
+                .enable_io()
+                .enable_time()
+                .build()
+                .expect("Failed to create tokio runtime");
+            rt.block_on(async {
+                let html = warp::path::end().map(|| {
+                    Response::builder()
+                        .header("Content-Type", "text/html")
+                        .body(include_str!("run-web.html"))
+                });
+
+                let cart = warp::path("cart")
+                    .map(move || server_cart.lock().map_or(Vec::new(), |c| c.clone()));
+
+                let events = warp::path("events").and(warp::get()).map(move || {
+                    fn event_stream(
+                        tx: &broadcast::Sender<()>,
+                    ) -> impl Stream<Item = Result<warp::sse::Event, std::convert::Infallible>>
+                    {
+                        BroadcastStream::new(tx.subscribe())
+                            .map(|_| Ok(warp::sse::Event::default().data("L")))
+                    }
+                    warp::sse::reply(warp::sse::keep_alive().stream(event_stream(&server_tx)))
+                });
+
+                let socket_addr = "127.0.0.1:3030"
+                    .parse::<SocketAddr>()
+                    .expect("Failed to parse socket address");
+
+                let server_future = warp::serve(html.or(cart).or(events)).bind(socket_addr);
+                println!("Point browser at http://{}", socket_addr);
+                let _ignore_result = webbrowser::open(&format!("http://{}", socket_addr));
+                server_future.await
+            });
+        });
+
+        RunWebServer { cart, tx }
+    }
+}
+
+impl super::Runtime for RunWebServer {
+    fn load(&mut self, module_data: &[u8]) -> Result<()> {
+        if let Ok(mut lock) = self.cart.lock() {
+            lock.clear();
+            lock.extend_from_slice(module_data);
+        }
+        let _ignore_result = self.tx.send(());
+        Ok(())
+    }
+
+    fn is_open(&self) -> bool {
+        true
+    }
+
+    fn run_frame(&mut self) -> Result<()> {
+        std::thread::sleep(std::time::Duration::from_millis(100));
+        Ok(())
+    }
+}
+
+impl Default for RunWebServer {
+    fn default() -> RunWebServer {
+        RunWebServer::new()
+    }
+}

test.cwa

@@ -0,0 +1,13 @@
+import "env.memory" memory(4);
+import "env.printString" fn print(i32);
+
+export fn upd() {
+}
+
+start fn start() {
+    print(0);
+}
+
+data 0 {
+    "Press " i8(0xe0) " and " i8(0xe1) " to adjust, " i8(0xcc) " to commit." i8(0)
+}

test/ges_test.cwa

@@ -0,0 +1,30 @@
+import "env.memory" memory(4);
+import "env.pow" fn pow(f32, f32) -> f32;
+import "env.sin" fn sin(f32) -> f32;
+import "env.cls" fn cls(i32);
+import "env.rectangle" fn rectangle(f32, f32, f32, f32, i32);
+
+include "../platform/src/ges.cwa"
+
+export fn snd(t: i32) -> f32 {
+    gesSnd(t)
+}
+
+export fn upd() {
+    80?0 = 32!32 / 200 & 2 | 0x41;
+    80?3 = (32!32 / 400)%7*12/7 + 40;
+    let pulse = (32!32 * 256 / 2000) & 511;
+    if pulse >= 256 {
+        pulse = 511 - pulse;
+    }
+    80?1 = pulse;
+
+    cls(0);
+    rectangle(0.0, 100.0, (pulse * 320 / 256) as f32, 16.0, 15);
+}
+
+data 80 {
+    i8(
+        0x41, 0, 0, 80, 0x70, 0
+    )
+}

tests/plot_ges.cwa

@@ -0,0 +1,59 @@
+include "../examples/include/microw8-api.cwa"
+
+export fn upd() {
+    80?0 = (32!32 >> 11 << 6) | 5;
+    80?1 = (sin(time() * 6 as f32) * 95 as f32) as i32 + 128;
+    plotGes();
+}
+
+data 80 { i8 (
+    1, 128, 0, 69, 0, 15,
+    0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0,
+    0xff, 0xff,
+    0xc1, 0, 0, 110, 0, 0
+) }
+
+//import "env.gesSnd" fn gesSnd(i32) -> f32;
+
+include "../platform/src/ges.cwa"
+
+export fn snd(t: i32) -> f32 {
+    gesSnd(t)
+}
+
+global mut samplePos: i32 = 0;
+
+const SoundBuffer = 0x30000;
+
+fn plotGes() {
+    rectangle(0 as f32, 10 as f32, 320 as f32, 320 as f32, 0);
+    let count = (time() * 44100 as f32) as i32 * 2 - samplePos;
+    let i: i32;
+    loop genLoop {
+        (i*4)$SoundBuffer = gesSnd(samplePos + i);
+        branch_if (i := i + 1) < count: genLoop;
+    }
+    samplePos = samplePos + count;
+
+    let ch: i32;
+    loop channelLoop {
+        let offset = 159;
+        i = 0;
+
+        loop searchLoop {
+            offset = offset + 1;
+            branch_if (offset * 8 + ch - 8)$SoundBuffer < 0 as f32 | (offset * 8 + ch)$SoundBuffer >= 0 as f32 & offset + 160 < count: searchLoop;
+        }
+
+        offset = ch + (offset - 160) * 8;
+        i = 0;
+        loop plotLoop {
+            setPixel(i, floor((i * 8 + offset)$SoundBuffer * 127 as f32) as i32 + 60 + ch * (120/8), 15);
+            branch_if (i := i + 1) < 320: plotLoop;
+        }
+
+        branch_if (ch := ch + 8) < 16: channelLoop;
+    }
+}

uw8-tool/src/base_module.rs

@@ -71,26 +71,102 @@ impl BaseModule {
         add_function(&mut functions, &type_map, "randomSeed", &[I32], None);
 
         add_function(&mut functions, &type_map, "cls", &[I32], None);
-        add_function(&mut functions, &type_map, "setPixel", &[I32, I32, I32], None);
+        add_function(
-        add_function(&mut functions, &type_map, "getPixel", &[I32, I32], Some(I32));
+            &mut functions,
-        add_function(&mut functions, &type_map, "hline", &[I32, I32, I32, I32], None);
+            &type_map,
-        add_function(&mut functions, &type_map, "rectangle", &[F32, F32, F32, F32, I32], None);
+            "setPixel",
-        add_function(&mut functions, &type_map, "circle", &[F32, F32, F32, I32], None);
+            &[I32, I32, I32],
-        add_function(&mut functions, &type_map, "line", &[F32, F32, F32, F32, I32], None);
+            None,
+        );
+        add_function(
+            &mut functions,
+            &type_map,
+            "getPixel",
+            &[I32, I32],
+            Some(I32),
+        );
+        add_function(
+            &mut functions,
+            &type_map,
+            "hline",
+            &[I32, I32, I32, I32],
+            None,
+        );
+        add_function(
+            &mut functions,
+            &type_map,
+            "rectangle",
+            &[F32, F32, F32, F32, I32],
+            None,
+        );
+        add_function(
+            &mut functions,
+            &type_map,
+            "circle",
+            &[F32, F32, F32, I32],
+            None,
+        );
+        add_function(
+            &mut functions,
+            &type_map,
+            "line",
+            &[F32, F32, F32, F32, I32],
+            None,
+        );
 
         add_function(&mut functions, &type_map, "time", &[], Some(F32));
-        add_function(&mut functions, &type_map, "isButtonPressed", &[I32], Some(I32));
+        add_function(
-        add_function(&mut functions, &type_map, "isButtonTriggered", &[I32], Some(I32));
+            &mut functions,
+            &type_map,
+            "isButtonPressed",
+            &[I32],
+            Some(I32),
+        );
+        add_function(
+            &mut functions,
+            &type_map,
+            "isButtonTriggered",
+            &[I32],
+            Some(I32),
+        );
 
         add_function(&mut functions, &type_map, "printChar", &[I32], None);
         add_function(&mut functions, &type_map, "printString", &[I32], None);
         add_function(&mut functions, &type_map, "printInt", &[I32], None);
         add_function(&mut functions, &type_map, "setTextColor", &[I32], None);
-        add_function(&mut functions, &type_map, "setBackgroundColor", &[I32], None);
+        add_function(
-        add_function(&mut functions, &type_map, "setCursorPosition", &[I32, I32], None);
+            &mut functions,
+            &type_map,
+            "setBackgroundColor",
+            &[I32],
+            None,
+        );
+        add_function(
+            &mut functions,
+            &type_map,
+            "setCursorPosition",
+            &[I32, I32],
+            None,
+        );
 
-        add_function(&mut functions, &type_map, "rectangle_outline", &[F32, F32, F32, F32, I32], None);
+        add_function(
-        add_function(&mut functions, &type_map, "circle_outline", &[F32, F32, F32, I32], None);
+            &mut functions,
+            &type_map,
+            "rectangle_outline",
+            &[F32, F32, F32, F32, I32],
+            None,
+        );
+        add_function(
+            &mut functions,
+            &type_map,
+            "circle_outline",
+            &[F32, F32, F32, I32],
+            None,
+        );
+
+        add_function(&mut functions, &type_map, "exp", &[F32], Some(F32));
+
+        add_function(&mut functions, &type_map, "playNote", &[I32, I32], None);
 
         for i in functions.len()..64 {
             add_function(
@@ -214,6 +290,71 @@ impl BaseModule {
         File::create(path)?.write_all(&data)?;
         Ok(())
     }
+
+    pub fn write_as_cwa<P: AsRef<Path>>(&self, path: P) -> Result<()> {
+        fn inner(mut file: File, base: &BaseModule) -> Result<()> {
+            writeln!(
+                file,
+                "// MicroW8 APIs, to be `include`d in CurlyWas sources"
+            )?;
+            writeln!(file, "import \"env.memory\" memory({});", base.memory)?;
+            writeln!(file)?;
+            for &(module, ref name, type_id) in &base.function_imports {
+                if !name.contains("reserved") {
+                    let ty = &base.types[type_id as usize];
+                    let params: Vec<&str> = ty.params.iter().copied().map(type_to_str).collect();
+                    write!(
+                        file,
+                        "import \"{}.{}\" fn {}({})",
+                        module,
+                        name,
+                        name,
+                        params.join(", ")
+                    )?;
+                    if let Some(result) = ty.result {
+                        write!(file, " -> {}", type_to_str(result))?;
+                    }
+                    writeln!(file, ";")?;
+                }
+            }
+
+            writeln!(file)?;
+            for &(name, value) in CONSTANTS {
+                writeln!(file, "const {} = 0x{:x};", name, value)?;
+            }
+            Ok(())
+        }
+        inner(File::create(path)?, self)
+    }
+
+    pub fn write_as_wat<P: AsRef<Path>>(&self, path: P) -> Result<()> {
+        fn inner(mut file: File, base: &BaseModule) -> Result<()> {
+            writeln!(file, ";; MicroW8 APIs, in WAT (Wasm Text) format")?;
+            writeln!(file, "(import \"env\" \"memory\" (memory {}))", base.memory)?;
+            writeln!(file)?;
+            for &(module, ref name, type_id) in &base.function_imports {
+                if !name.contains("reserved") {
+                    let ty = &base.types[type_id as usize];
+                    write!(file, "(import \"{}\" \"{}\" (func ${}", module, name, name)?;
+                    for &param in &ty.params {
+                        write!(file, " (param {})", type_to_str(param))?;
+                    }
+                    if let Some(result) = ty.result {
+                        write!(file, " (result {})", type_to_str(result))?;
+                    }
+                    writeln!(file, "))")?;
+                }
+            }
+
+            writeln!(file)?;
+            writeln!(file, ";; to use defines, include this file with a preprocessor\n;; like gpp (https://logological.org/gpp).")?;
+            for &(name, value) in CONSTANTS {
+                writeln!(file, "#define {} 0x{:x};", name, value)?;
+            }
+            Ok(())
+        }
+        inner(File::create(path)?, self)
+    }
 }
 
 fn add_function(
@@ -241,3 +382,30 @@ fn lookup_type(
     };
     *type_map.get(&key).unwrap()
 }
+
+fn type_to_str(ty: ValType) -> &'static str {
+    match ty {
+        ValType::I32 => "i32",
+        ValType::I64 => "i64",
+        ValType::F32 => "f32",
+        ValType::F64 => "f64",
+        _ => unimplemented!(),
+    }
+}
+
+const CONSTANTS: &[(&str, u32)] = &[
+    ("TIME_MS", 0x40),
+    ("GAMEPAD", 0x44),
+    ("FRAMEBUFFER", 0x78),
+    ("PALETTE", 0x13000),
+    ("FONT", 0x13400),
+    ("USER_MEM", 0x14000),
+    ("BUTTON_UP", 0),
+    ("BUTTON_DOWN", 1),
+    ("BUTTON_LEFT", 2),
+    ("BUTTON_RIGHT", 3),
+    ("BUTTON_A", 4),
+    ("BUTTON_B", 5),
+    ("BUTTON_X", 6),
+    ("BUTTON_Y", 7),
+];

uw8-tool/src/main.rs

@@ -1,8 +1,8 @@
 use std::path::PathBuf;
 
 use anyhow::Result;
-use uw8_tool::BaseModule;
 use pico_args::Arguments;
+use uw8_tool::BaseModule;
 
 fn main() -> Result<()> {
     let mut args = Arguments::from_env();
@@ -32,6 +32,14 @@ fn main() -> Result<()> {
                 let dest: PathBuf = args.free_from_str()?;
                 uw8_tool::filter_exports(&source, &dest)?;
             }
+            "base-cwa" => {
+                let path: PathBuf = args.free_from_str()?;
+                BaseModule::for_format_version(1)?.write_as_cwa(path)?;
+            }
+            "base-wat" => {
+                let path: PathBuf = args.free_from_str()?;
+                BaseModule::for_format_version(1)?.write_as_wat(path)?;
+            }
             _ => {
                 eprintln!("Unknown subcommand '{}'", cmd);
                 print_help();

uw8-tool/src/pack.rs

@@ -10,7 +10,7 @@ use std::{
 use wasm_encoder as enc;
 use wasmparser::{
     BinaryReader, ExportSectionReader, ExternalKind, FunctionBody, FunctionSectionReader,
-    ImportSectionEntryType, ImportSectionReader, TypeSectionReader,
+    ImportSectionEntryType, ImportSectionReader, TableSectionReader, TypeSectionReader,
 };
 
 pub struct PackConfig {
@@ -31,7 +31,9 @@ impl PackConfig {
 
 impl Default for PackConfig {
     fn default() -> PackConfig {
-        PackConfig { compression: Some(2) }
+        PackConfig {
+            compression: Some(2),
+        }
     }
 }
 
@@ -156,6 +158,8 @@ struct ParsedModule<'a> {
     start_section: Option<u32>,
     function_bodies: Vec<wasmparser::FunctionBody<'a>>,
     data_section: Option<Section<()>>,
+    table_section: Option<Section<()>>,
+    element_section: Option<Vec<Element>>,
 }
 
 impl<'a> ParsedModule<'a> {
@@ -170,6 +174,8 @@ impl<'a> ParsedModule<'a> {
         let mut start_section = None;
         let mut function_bodies = Vec::new();
         let mut data_section = None;
+        let mut table_section = None;
+        let mut element_section = None;
 
         let mut offset = 0;
 
@@ -209,6 +215,17 @@ impl<'a> ParsedModule<'a> {
                 Payload::DataSection(_) => {
                     data_section = Some(Section::new(range, ()));
                 }
+                Payload::TableSection(reader) => {
+                    validate_table_section(reader)?;
+                    table_section = Some(Section::new(range, ()));
+                }
+                Payload::ElementSection(mut reader) => {
+                    let mut elements = Vec::with_capacity(reader.get_count() as usize);
+                    for _ in 0..reader.get_count() {
+                        elements.push(Element::parse(reader.read()?)?);
+                    }
+                    element_section = Some(elements);
+                }
                 Payload::CodeSectionStart { .. } => (),
                 Payload::CodeSectionEntry(body) => function_bodies.push(body),
                 Payload::CustomSection { .. } => (),
@@ -229,6 +246,8 @@ impl<'a> ParsedModule<'a> {
             start_section,
             function_bodies,
             data_section,
+            table_section,
+            element_section,
         })
     }
 
@@ -405,6 +424,10 @@ impl<'a> ParsedModule<'a> {
             module.section(&function_section);
         }
 
+        if let Some(tables) = self.table_section {
+            copy_section(&mut module, &self.data[tables.range.clone()])?;
+        }
+
         if let Some(ref globals) = self.globals {
             copy_section(&mut module, &self.data[globals.range.clone()])?;
             for i in 0..globals.data {
@@ -446,6 +469,25 @@ impl<'a> ParsedModule<'a> {
             });
         }
 
+        if let Some(elements) = self.element_section {
+            let mut element_section = wasm_encoder::ElementSection::new();
+            for element in elements {
+                let mut functions = Vec::with_capacity(element.functions.len());
+                for index in element.functions {
+                    functions.push(*function_map.get(&index).ok_or_else(|| {
+                        anyhow!("Function index {} not found in function map", index)
+                    })?);
+                }
+                element_section.active(
+                    None,
+                    &wasm_encoder::Instruction::I32Const(element.start_index as i32),
+                    ValType::FuncRef,
+                    wasm_encoder::Elements::Functions(&functions),
+                );
+            }
+            module.section(&element_section);
+        }
+
         {
             let mut code_section = enc::CodeSection::new();
 
@@ -502,6 +544,19 @@ fn read_type_section(reader: TypeSectionReader) -> Result<Vec<base_module::Funct
     Ok(function_types)
 }
 
+fn validate_table_section(mut reader: TableSectionReader) -> Result<()> {
+    if reader.get_count() != 1 {
+        bail!("Only up to one table supported");
+    }
+
+    let type_ = reader.read()?;
+    if type_.element_type != wasmparser::Type::FuncRef {
+        bail!("Only one funcref table is supported");
+    }
+
+    Ok(())
+}
+
 #[derive(Debug)]
 struct Section<T> {
     range: std::ops::Range<usize>,
@@ -579,6 +634,51 @@ impl ImportSection {
     }
 }
 
+#[derive(Debug)]
+struct Element {
+    start_index: u32,
+    functions: Vec<u32>,
+}
+
+impl Element {
+    fn parse(element: wasmparser::Element) -> Result<Element> {
+        if element.ty != wasmparser::Type::FuncRef {
+            bail!("Table element type is not FuncRef");
+        }
+
+        let start_index = if let wasmparser::ElementKind::Active {
+            init_expr,
+            table_index: 0,
+        } = element.kind
+        {
+            let mut init_reader = init_expr.get_operators_reader();
+            if let wasmparser::Operator::I32Const { value: start_index } = init_reader.read()? {
+                start_index as u32
+            } else {
+                bail!("Table element start index is not a integer constant");
+            }
+        } else {
+            bail!("Unsupported table element kind");
+        };
+
+        let mut items_reader = element.items.get_items_reader()?;
+
+        let mut functions = Vec::with_capacity(items_reader.get_count() as usize);
+        for _ in 0..items_reader.get_count() {
+            if let wasmparser::ElementItem::Func(index) = items_reader.read()? {
+                functions.push(index);
+            } else {
+                bail!("Table element item is not a function");
+            }
+        }
+
+        Ok(Element {
+            start_index,
+            functions,
+        })
+    }
+}
+
 #[derive(Debug)]
 struct FunctionImport {
     module: String,
@@ -678,8 +778,13 @@ fn remap_function(
                     .get(&function_index)
                     .ok_or_else(|| anyhow!("Function index out of range: {}", function_index))?,
             ),
-            De::CallIndirect { .. }
+            De::CallIndirect { index, table_index } => En::CallIndirect {
-            | De::ReturnCall { .. }
+                ty: *type_map
+                    .get(&index)
+                    .ok_or_else(|| anyhow!("Unknown function type in call indirect"))?,
+                table: table_index,
+            },
+            De::ReturnCall { .. }
             | De::ReturnCallIndirect { .. }
             | De::Delegate { .. }
             | De::CatchAll => todo!(),

web/build-run-web

@@ -0,0 +1,2 @@
+#!/bin/bash
+rm -rf .parcel-cache && yarn parcel build src/run-web.html && cp dist/run-web.html ../src/

web/run

@@ -0,0 +1,2 @@
+#!/bin/bash
+rm -rf .parcel-cache && yarn parcel src/index.html

web/src/audiolet.js

@@ -0,0 +1,84 @@
+let U8 = (...a) => new Uint8Array(...a);
+class APU extends AudioWorkletProcessor {
+    constructor() {
+        super();
+        this.sampleIndex = 0;
+        this.currentTime = 0;
+        this.isFirstMessage = true;
+        this.pendingUpdates = [];
+        this.port.onmessage = (ev) => {
+            if(this.memory) {
+                if(this.isFirstMessage)
+                {
+                    this.currentTime += (ev.data.t - this.currentTime) / 8;
+                    this.isFirstMessage = false;
+                }
+                this.pendingUpdates.push(ev.data);
+            } else {
+                this.load(ev.data[0], ev.data[1]);
+            }
+        };
+    }
+
+    async load(platform_data, data) {
+        let memory = new WebAssembly.Memory({ initial: 4, maximum: 4 });
+
+        let importObject = {
+            env: {
+                memory
+            },
+        };
+
+        for (let n of ['acos', 'asin', 'atan', 'atan2', 'cos', 'exp', 'log', 'sin', 'tan', 'pow']) {
+            importObject.env[n] = Math[n];
+        }
+
+        for (let i = 9; i < 64; ++i) {
+            importObject.env['reserved' + i] = () => { };
+        }
+
+        for (let i = 0; i < 16; ++i) {
+            importObject.env['g_reserved' + i] = 0;
+        }
+
+        let instantiate = async (data) => (await WebAssembly.instantiate(data, importObject)).instance;
+
+        let platform_instance = await instantiate(platform_data);
+
+        for (let name in platform_instance.exports) {
+            importObject.env[name] = platform_instance.exports[name]
+        }
+
+        let instance = await instantiate(data);
+
+        this.memory = memory;
+
+        this.snd = instance.exports.snd || platform_instance.exports.gesSnd;
+
+        this.port.postMessage(2);
+    }
+
+    process(inputs, outputs, parameters) {
+        this.isFirstMessage = true;
+        if(this.snd) {
+            while(this.pendingUpdates.length > 0 && this.pendingUpdates[0].t <= this.currentTime) {
+                U8(this.memory.buffer, 80, 32).set(U8(this.pendingUpdates.shift().r));
+            }
+            let u32Mem = new Uint32Array(this.memory.buffer);
+            u32Mem[16] = this.currentTime;
+            let channels = outputs[0];
+            let index = this.sampleIndex;
+            let numSamples = channels[0].length;
+            for(let i = 0; i < numSamples; ++i) {
+                channels[0][i] = this.snd(index++);
+                channels[1][i] = this.snd(index++);
+            }
+            this.sampleIndex = index & 0xffffffff;
+            this.currentTime += numSamples / 44.1;
+        }
+
+        return true;
+    }
+}
+
+registerProcessor('apu', APU);

web/src/index.html

@@ -10,10 +10,13 @@
     </head>
     <body>
         <div id="uw8">
-            <a href="https://exoticorn.github.io/microw8">MicroW8</a> 0.1.0
+            <a href="https://exoticorn.github.io/microw8">MicroW8</a> 0.2.0-rc2
         </div>
         <div id="centered">
-            <canvas id="screen" width="320" height="240"></canvas>
+            <canvas class="screen" id="screen" width="320" height="240">
+            </canvas>
+            <button class="screen" id="start" style="display:none">Click to start</button>
+            <div id="timer" hidden="true"></div>        
             <div id="message"></div>
             <button id="cartButton" style="visibility:hidden">Load cart...</button>
         </div>

web/src/main.js

@@ -1,5 +1,4 @@
-import loaderUrl from "data-url:../../platform/bin/loader.wasm";
+import MicroW8 from './microw8.js';
-import platformUrl from "data-url:../../platform/bin/platform.uw8";
 
 function setMessage(size, error) {
     let html = size ? `${size} bytes` : 'Insert cart';
@@ -9,236 +8,28 @@ function setMessage(size, error) {
     document.getElementById('message').innerHTML = html;
 }
 
-let screen = document.getElementById('screen');
+let uw8 = MicroW8(document.getElementById('screen'), {
-let canvasCtx = screen.getContext('2d');
+    setMessage,
-let imageData = canvasCtx.createImageData(320, 240);
+    keyboardElement: window,
-
+    timerElement: document.getElementById("timer"),
-let cancelFunction;
+    startButton: document.getElementById("start")
-
+});
-let currentData;
-
-let U8 = (d) => new Uint8Array(d);
-let U32 = (d) => new Uint32Array(d);
-
-let pad = 0;
-let keyHandler = (e) => {
-    let isKeyDown = e.type == 'keydown';
-    let mask;
-    switch (e.code) {
-        case 'ArrowUp':
-            mask = 1;
-            break;
-        case 'ArrowDown':
-            mask = 2;
-            break;
-        case 'ArrowLeft':
-            mask = 4;
-            break;
-        case 'ArrowRight':
-            mask = 8;
-            break;
-        case 'KeyZ':
-            mask = 16;
-            break;
-        case 'KeyX':
-            mask = 32;
-            break;
-        case 'KeyA':
-            mask = 64;
-            break;
-        case 'KeyS':
-            mask = 128;
-            break;
-        case 'KeyR':
-            if (isKeyDown) {
-                runModule(currentData);
-            }
-            break;
-    }
-
-    if (isKeyDown) {
-        pad |= mask;
-    } else {
-        pad &= ~mask;
-    }
-};
-window.onkeydown = keyHandler;
-window.onkeyup = keyHandler;
-
-async function runModule(data, keepUrl) {
-    if (cancelFunction) {
-        cancelFunction();
-        cancelFunction = null;
-    }
-
-    let cartridgeSize = data.byteLength;
-
-    setMessage(cartridgeSize);
-    if (cartridgeSize == 0) {
-        return;
-    }
-
-    currentData = data;
-
-    let newURL = window.location.pathname;
-    if (cartridgeSize <= 1024 && !keepUrl) {
-        let dataString = '';
-        for (let byte of U8(data)) {
-            dataString += String.fromCharCode(byte);
-        }
-        newURL += '#' + btoa(dataString);
-
-        if (newURL != window.location.pathname + window.location.hash) {
-            history.pushState(null, null, newURL);
-        }
-    }
-
-    screen.width = screen.width;
-
-    try {
-        let memory = new WebAssembly.Memory({ initial: 4, maximum: 4 });
-        let memU8 = U8(memory.buffer);
-
-        let importObject = {
-            env: {
-                memory
-            },
-        };
-
-        let loader;
-
-        let loadModuleData = (data) => {
-            if (U8(data)[0] != 0) {
-                memU8.set(U8(data));
-                let length = loader.exports.load_uw8(data.byteLength);
-                data = new ArrayBuffer(length);
-                U8(data).set(memU8.slice(0, length));
-            }
-            return data;
-        }
-
-        let instantiate = async (data) => (await WebAssembly.instantiate(data, importObject)).instance;
-
-        let loadModuleURL = async (url) => instantiate(loadModuleData(await (await fetch(url)).arrayBuffer()));
-
-        loader = await loadModuleURL(loaderUrl);
-
-        for (let n of ['acos', 'asin', 'atan', 'atan2', 'cos', 'exp', 'log', 'sin', 'tan', 'pow']) {
-            importObject.env[n] = Math[n];
-        }
-
-        for (let i = 9; i < 64; ++i) {
-            importObject.env['reserved' + i] = () => { };
-        }
-
-        for (let i = 0; i < 16; ++i) {
-            importObject.env['g_reserved' + i] = 0;
-        }
-
-        data = loadModuleData(data);
-
-        let platform_instance = await loadModuleURL(platformUrl);
-
-        for (let name in platform_instance.exports) {
-            importObject.env[name] = platform_instance.exports[name]
-        }
-
-        let instance = await instantiate(data);
-
-        let buffer = U32(imageData.data.buffer);
-
-        let startTime = Date.now();
-
-        let keepRunning = true;
-        cancelFunction = () => keepRunning = false;
-
-        const timePerFrame = 1000 / 60;
-        let nextFrame = startTime;
-
-        function mainloop() {
-            if (!keepRunning) {
-                return;
-            }
-
-            try {
-                let now = Date.now();
-                let restart = false;
-                if (now >= nextFrame) {
-                    let gamepads = navigator.getGamepads();
-                    let gamepad = 0;
-                    for (let i = 0; i < 4; ++i) {
-                        let pad = gamepads[i];
-                        if (!pad) {
-                            continue;
-                        }
-                        for (let j = 0; j < 8; ++j) {
-                            let buttonIdx = (j + 12) % 16;
-                            if (pad.buttons.length > buttonIdx && pad.buttons[buttonIdx].pressed) {
-                                gamepad |= 1 << (i * 8 + j);
-                            }
-                        }
-                        if (pad.axes.length > 1) {
-                            for (let j = 0; j < 4; ++j) {
-                                let v = pad.axes[1 - (j >> 1)];
-                                if (((j & 1) ? v : -v) > 0.5) {
-                                    gamepad |= 1 << (i * 8 + j);
-                                }
-                            }
-                        }
-                        if (pad.buttons.length > 9 && pad.buttons[9].pressed) {
-                            restart = true;
-                        }
-                    }
-
-                    let u32Mem = U32(memory.buffer);
-                    u32Mem[16] = now - startTime;
-                    u32Mem[17] = pad | gamepad;
-                    instance.exports.upd();
-                    platform_instance.exports.endFrame();
-
-                    let palette = U32(memory.buffer.slice(0x13000, 0x13000 + 1024));
-                    for (let i = 0; i < 320 * 240; ++i) {
-                        buffer[i] = palette[memU8[i + 120]] | 0xff000000;
-                    }
-                    canvasCtx.putImageData(imageData, 0, 0);
-                    nextFrame = Math.max(nextFrame + timePerFrame, now);
-                }
-
-                if (restart) {
-                    runModule(currentData);
-                } else {
-                    window.requestAnimationFrame(mainloop);
-                }
-            } catch (err) {
-                setMessage(cartridgeSize, err.toString());
-            }
-        }
-
-        mainloop();
-    } catch (err) {
-        setMessage(cartridgeSize, err.toString());
-    }
-}
-
-async function runModuleFromURL(url, keepUrl) {
-    let response = await fetch(url);
-    let type = response.headers.get('Content-Type');
-    if(type && type.includes('html')) {
-        throw false;
-    }
-    runModule(await response.arrayBuffer(), keepUrl);
-}
 
 function runModuleFromHash() {
     let hash = window.location.hash.slice(1);
+    if(hash == 'devkit') {
+        uw8.setDevkitMode(true);
+        return;
+    }
+    uw8.setDevkitMode(false);
     if (hash.length > 0) {
         if (hash.startsWith("url=")) {
-            runModuleFromURL(hash.slice(4), true);
+            uw8.runModuleFromURL(hash.slice(4), true);
         } else {
-            runModuleFromURL('data:;base64,' + hash);
+            uw8.runModuleFromURL('data:;base64,' + hash);
         }
     } else {
-        runModule(new ArrayBuffer(0));
+        uw8.runModule(new ArrayBuffer(0));
     }
 }
 
@@ -253,7 +44,7 @@ let setupLoad = () => {
         fileInput.accept = '.wasm,.uw8,application/wasm';
         fileInput.onchange = () => {
             if (fileInput.files.length > 0) {
-                runModuleFromURL(URL.createObjectURL(fileInput.files[0]));
+                uw8.runModuleFromURL(URL.createObjectURL(fileInput.files[0]));
             }
         };
         fileInput.click();
@@ -267,7 +58,7 @@ let setupLoad = () => {
         let files = e.dataTransfer && e.dataTransfer.files;
         if(files && files.length == 1) {
             e.preventDefault();
-            runModuleFromURL(URL.createObjectURL(e.dataTransfer.files[0]));
+            uw8.runModuleFromURL(URL.createObjectURL(e.dataTransfer.files[0]));
         }
     }
 
@@ -289,7 +80,9 @@ if(location.hash.length != 0) {
             url += 'cart.uw8';
         }
         try {
-            await runModuleFromURL(url, true);
+            if(!await uw8.runModuleFromURL(url, true)) {
+                setupLoad();
+            }
         } catch(e) {
             setupLoad();
         }

web/src/microw8.js

@@ -0,0 +1,419 @@
+import loaderUrl from "data-url:../../platform/bin/loader.wasm";
+import platformUrl from "data-url:../../platform/bin/platform.uw8";
+import audioWorkletUrl from "data-url:./audiolet.js";
+
+class AudioNode extends AudioWorkletNode {
+    constructor(context) {
+        super(context, 'apu', {outputChannelCount: [2]});
+    }
+}
+
+let U8 = (...a) => new Uint8Array(...a);
+let U32 = (...a) => new Uint32Array(...a);
+
+export default function MicroW8(screen, config = {}) {
+    if(!config.setMessage) {
+        config.setMessage = (s, e) => {
+            if(e) {
+                console.log('error: ' + e);
+            }
+        }
+    }
+    let canvasCtx = screen.getContext('2d');
+    let imageData = canvasCtx.createImageData(320, 240);
+    
+    let devkitMode = config.devkitMode;
+    
+    let cancelFunction;
+    
+    let currentData;
+    
+    let pad = 0;
+    let keyboardElement = config.keyboardElement == undefined ? screen : config.keyboardElement;
+    if(keyboardElement) {
+        let keyHandler = (e) => {
+            let isKeyDown = e.type == 'keydown';
+            let mask;
+            switch (e.code) {
+                case 'ArrowUp':
+                    mask = 1;
+                    break;
+                case 'ArrowDown':
+                    mask = 2;
+                    break;
+                case 'ArrowLeft':
+                    mask = 4;
+                    break;
+                case 'ArrowRight':
+                    mask = 8;
+                    break;
+                case 'KeyZ':
+                    mask = 16;
+                    break;
+                case 'KeyX':
+                    mask = 32;
+                    break;
+                case 'KeyA':
+                    mask = 64;
+                    break;
+                case 'KeyS':
+                    mask = 128;
+                    break;
+                case 'KeyR':
+                    if (isKeyDown) {
+                        runModule(currentData, true);
+                    }
+                    break;
+                case 'F9':
+                    if(isKeyDown) {
+                        screen.toBlob(blob => {
+                            downloadBlob(blob, '.png');
+                        });
+                    }
+                    e.preventDefault();
+                    break;
+                case 'F10':
+                    if(isKeyDown) {
+                        recordVideo();
+                    }
+                    e.preventDefault();
+                    break;
+            }
+        
+            if (isKeyDown) {
+                pad |= mask;
+            } else {
+                pad &= ~mask;
+            }
+        };
+
+        keyboardElement.onkeydown = keyHandler;
+        keyboardElement.onkeyup = keyHandler;
+    }
+
+    let audioContext;
+    let audioNode;
+    
+    async function runModule(data, keepUrl) {
+        if (cancelFunction) {
+            cancelFunction();
+            cancelFunction = null;
+        }
+    
+        audioContext = new AudioContext({sampleRate: 44100});
+        let keepRunning = true;
+        let abortController = new AbortController();
+        cancelFunction = () => {
+            audioContext.close();
+            keepRunning = false;
+            abortController.abort();
+        };
+
+        let cartridgeSize = data.byteLength;
+    
+        config.setMessage(cartridgeSize);
+        if (cartridgeSize == 0) {
+            return;
+        }
+    
+        await audioContext.audioWorklet.addModule(audioWorkletUrl);
+        audioNode = new AudioNode(audioContext);
+
+        let audioReadyFlags = 0;
+        let audioReadyResolve;
+        let audioReadyPromise = new Promise(resolve => audioReadyResolve = resolve);
+        let updateAudioReady = (f) => {
+            audioReadyFlags |= f;
+            if(audioReadyFlags == 3 && audioReadyResolve) {
+                audioReadyResolve(true);
+                audioReadyResolve = null;
+            }
+        };
+        let audioStateChange = () => {
+            if(audioContext.state == 'suspended') {
+                if(config.startButton) {
+                    config.startButton.style = '';
+                    screen.style = 'display:none';
+                }
+                (config.startButton || screen).onclick = () => {
+                    audioContext.resume();
+                };
+            } else {
+                if(config.startButton) {
+                    config.startButton.style = 'display:none';
+                    screen.style = '';
+                }
+                updateAudioReady(1);
+            }
+        };
+        audioContext.onstatechange = audioStateChange;
+        audioStateChange();
+
+        currentData = data;
+    
+        let newURL = window.location.pathname;
+        if (cartridgeSize <= 1024 && !keepUrl) {
+            let dataString = '';
+            for (let byte of U8(data)) {
+                dataString += String.fromCharCode(byte);
+            }
+            newURL += '#' + btoa(dataString);
+    
+            if (newURL != window.location.pathname + window.location.hash) {
+                history.pushState(null, null, newURL);
+            }
+        }
+    
+        screen.width = screen.width;
+    
+        try {
+            let memSize = { initial: 4 };
+            if(!devkitMode) {
+                memSize.maximum = 4;
+            }
+            let memory = new WebAssembly.Memory(memSize);
+            let memU8 = U8(memory.buffer);
+    
+            let importObject = {
+                env: {
+                    memory
+                },
+            };
+    
+            let loader;
+    
+            let loadModuleData = (data) => {
+                if (loader && (!devkitMode || U8(data)[0] != 0)) {
+                    memU8.set(U8(data));
+                    let length = loader.exports.load_uw8(data.byteLength);
+                    data = new ArrayBuffer(length);
+                    U8(data).set(memU8.slice(0, length));
+                }
+                return data;
+            }
+    
+            let instantiate = async (data) => (await WebAssembly.instantiate(data, importObject)).instance;
+    
+            let loadModuleURL = async (url) => loadModuleData(await (await fetch(url)).arrayBuffer());
+    
+            loader = await instantiate(await loadModuleURL(loaderUrl));
+    
+            for (let n of ['acos', 'asin', 'atan', 'atan2', 'cos', 'exp', 'log', 'sin', 'tan', 'pow']) {
+                importObject.env[n] = Math[n];
+            }
+    
+            for (let i = 9; i < 64; ++i) {
+                importObject.env['reserved' + i] = () => { };
+            }
+    
+            for (let i = 0; i < 16; ++i) {
+                importObject.env['g_reserved' + i] = 0;
+            }
+    
+            data = loadModuleData(data);
+    
+            let platform_data = await loadModuleURL(platformUrl);
+
+            audioNode.port.onmessage = (e) => updateAudioReady(e.data);
+            audioNode.port.postMessage([platform_data, data]);
+
+            let platform_instance = await instantiate(platform_data);
+    
+            for (let name in platform_instance.exports) {
+                importObject.env[name] = platform_instance.exports[name]
+            }
+    
+            let instance = await instantiate(data);
+    
+            let buffer = U32(imageData.data.buffer);
+
+            await audioReadyPromise;
+    
+            let startTime = Date.now();
+    
+            const timePerFrame = 1000 / 60;
+
+            audioNode.connect(audioContext.destination);
+
+            let isPaused = false;
+            let pauseTime = startTime;
+            let updateVisibility = isVisible => {
+                let now = Date.now();
+                if(isVisible) {
+                    isPaused = false;
+                    audioContext.resume();
+                    startTime += now - pauseTime;
+                } else {
+                    isPaused = true;
+                    audioContext.suspend();
+                    pauseTime = now;
+                }
+            };
+            window.addEventListener('focus', () => updateVisibility(true), { signal: abortController.signal });
+            window.addEventListener('blur', () => updateVisibility(false), { signal: abortController.signal });
+            updateVisibility(document.hasFocus());
+
+            function mainloop() {
+                if (!keepRunning) {
+                    return;
+                }
+    
+                try {
+                    let restart = false;
+                    let thisFrame;
+                    if (!isPaused) {
+                        let gamepads = navigator.getGamepads();
+                        let gamepad = 0;
+                        for (let i = 0; i < 4; ++i) {
+                            let pad = gamepads[i];
+                            if (!pad) {
+                                continue;
+                            }
+                            for (let j = 0; j < 8; ++j) {
+                                let buttonIdx = (j + 12) % 16;
+                                if (pad.buttons.length > buttonIdx && pad.buttons[buttonIdx].pressed) {
+                                    gamepad |= 1 << (i * 8 + j);
+                                }
+                            }
+                            if (pad.axes.length > 1) {
+                                for (let j = 0; j < 4; ++j) {
+                                    let v = pad.axes[1 - (j >> 1)];
+                                    if (((j & 1) ? v : -v) > 0.5) {
+                                        gamepad |= 1 << (i * 8 + j);
+                                    }
+                                }
+                            }
+                            if (pad.buttons.length > 9 && pad.buttons[9].pressed) {
+                                restart = true;
+                            }
+                        }
+    
+                        let u32Mem = U32(memory.buffer);
+                        let time = Date.now() - startTime;
+                        u32Mem[16] = time;
+                        u32Mem[17] = pad | gamepad;
+                        if(instance.exports.upd) {
+                            instance.exports.upd();
+                        }
+                        platform_instance.exports.endFrame();
+
+                        let soundRegisters = new ArrayBuffer(32);
+                        U8(soundRegisters).set(U8(memory.buffer, 80, 32));
+                        audioNode.port.postMessage({t: time, r: soundRegisters}, [soundRegisters]);
+    
+                        let palette = U32(memory.buffer, 0x13000, 1024);
+                        for (let i = 0; i < 320 * 240; ++i) {
+                            buffer[i] = palette[memU8[i + 120]] | 0xff000000;
+                        }
+                        canvasCtx.putImageData(imageData, 0, 0);
+
+                        let timeOffset = ((time * 6) % 100 - 50) / 6;
+                        thisFrame = startTime + time - timeOffset / 8;
+                    } else {
+                        thisFrame = Date.now();
+                    }
+                    let now = Date.now();
+                    let nextFrame = Math.max(thisFrame + timePerFrame, now);
+    
+                    if (restart) {
+                        runModule(currentData);
+                    } else {
+                        window.setTimeout(mainloop, Math.round(nextFrame - now))
+                    }
+                } catch (err) {
+                    config.setMessage(cartridgeSize, err.toString());
+                }
+            }
+    
+            mainloop();
+        } catch (err) {
+            config.setMessage(cartridgeSize, err.toString());
+        }
+    }
+    
+    function downloadBlob(blob, ext) {
+        let a = document.createElement('a');
+        a.href = URL.createObjectURL(blob);
+        a.download = 'microw8_' + new Date().toISOString() + ext;
+        a.click();
+        URL.revokeObjectURL(a.href);
+    }
+    
+    let videoRecorder;
+    let videoStartTime;
+    let videoAudioSourceNode;
+    let videoAudioStreamNode;
+    function recordVideo() {
+        if(videoRecorder) {
+            videoRecorder.stop();
+            videoRecorder = null;
+            videoAudioSourceNode.disconnect(videoAudioStreamNode);
+            videoAudioSourceNode = null;
+            videoAudioStreamNode = null;
+            return;
+        }
+
+        let stream = screen.captureStream();
+        videoAudioStreamNode = audioContext.createMediaStreamDestination();
+        videoAudioSourceNode = audioNode;
+        audioNode.connect(videoAudioStreamNode);
+        stream.addTrack(videoAudioStreamNode.stream.getAudioTracks()[0]);
+    
+        videoRecorder = new MediaRecorder(stream, {
+            mimeType: 'video/webm',
+            videoBitsPerSecond: 25000000
+        });
+    
+        let chunks = [];
+        videoRecorder.ondataavailable = e => {
+            chunks.push(e.data);
+        };
+    
+        let timer = config.timerElement;
+        if(timer) {
+            timer.hidden = false;
+            timer.innerText = "00:00";
+        }
+    
+        videoRecorder.onstop = () => {
+            if(timer) {
+                timer.hidden = true;
+            }
+            downloadBlob(new Blob(chunks, {type: 'video/webm'}), '.webm');
+        };
+    
+        videoRecorder.start();
+        videoStartTime = Date.now();
+    
+        function updateTimer() {
+            if(!videoStartTime) {
+                return;
+            }
+    
+            if(timer) {
+                let duration = Math.floor((Date.now() - videoStartTime) / 1000);
+                timer.innerText = Math.floor(duration / 60).toString().padStart(2, '0') + ':' + (duration % 60).toString().padStart(2, '0');
+            }
+    
+            setTimeout(updateTimer, 1000);
+        }
+    
+        setTimeout(updateTimer, 1000);
+    }
+    
+    async function runModuleFromURL(url, keepUrl) {
+        let response = await fetch(url);
+        let type = response.headers.get('Content-Type');
+        if((type && type.includes('html')) || response.status != 200) {
+            return false;
+        }
+        runModule(await response.arrayBuffer(), keepUrl || devkitMode);
+        return true;
+    }
+
+    return {
+        runModule,
+        runModuleFromURL,
+        setDevkitMode: (m) => devkitMode = m,
+    };
+}

web/src/run-web.css

@@ -0,0 +1,46 @@
+html, body, canvas {
+    padding: 0;
+    margin: 0;
+    background-color: #202024;
+}
+
+html {
+    height: 100%;
+}
+
+body {
+    height: 100%;
+    display: grid;
+    grid-template-rows: 1fr;
+}
+
+#screen {
+    align-self: center;
+    justify-self: center;
+    image-rendering: pixelated;
+    border: 4px solid #303040;
+}
+
+#message {
+    position: absolute;
+    width: calc(100% - 16px);
+    background-color: rgba(0, 0, 0, 0.4);
+    color: #c64;
+    padding: 8px;
+    font: bold 12pt sans-serif;
+    z-index: 2;
+}
+
+@media (min-width: 648px) and (min-height: 488px) {
+    #screen {
+        width: 640px;
+        height: 480px;
+    }
+}
+
+@media (min-width: 968px) and (min-height: 728px) {
+    #screen {
+        width: 960px;
+        height: 720px;
+    }
+}

web/src/run-web.html

@@ -0,0 +1,18 @@
+<!doctype html>
+<html>
+    <head>
+        <meta charset="utf8" />
+        <title>uw8-run</title>
+        <style>
+            @import "run-web.css";
+        </style>
+    </head>
+    <body>
+        <canvas id="screen" width="320" height="240" tabindex="1">
+        </canvas>
+        <div id="message"></div>
+    </body>
+    <script type="module">
+        import "./run-web.js";
+    </script>
+</html>

web/src/run-web.js

@@ -0,0 +1,19 @@
+import MicroW8 from './microw8.js';
+
+let uw8 = MicroW8(document.getElementById('screen'), {
+    setMessage: (_, err) => {
+        let elem = document.getElementById('message');
+        if(err) {
+            elem.innerText = err;
+        }
+        elem.hidden = !err;
+    }
+});
+let events = new EventSource('events');
+events.onmessage = event => {
+    console.log(event.data);
+    if(event.data == 'L') {
+        uw8.runModuleFromURL('cart', true);
+    }
+};
+uw8.runModuleFromURL('cart', true);

web/src/style.css

@@ -37,7 +37,7 @@ a:hover {
     color: #405040;
 }
 
-#screen {
+.screen {
     width: 320px;
     height: 240px;
     image-rendering: pixelated;
@@ -45,9 +45,26 @@ a:hover {
     margin-bottom: 8px;
     border: 4px solid #303040;
     box-shadow: 5px 5px 20px black;
+}
+
+#screen {
     cursor: none;
 }
 
+#start {
+    font-size: 150%;
+}
+
+#timer::before {
+    content: '';
+    display: inline-block;
+    width: 12px;
+    height: 12px;
+    border-radius: 6px;
+    background-color: red;
+    margin-right: 3px;
+}
+
 #message {
     margin-bottom: 8px;
 }
@@ -74,21 +91,21 @@ button:active {
 }
 
 @media (min-width: 680px) and (min-height: 620px) {
-    #screen {
+    .screen {
         width: 640px;
         height: 480px;
     }
 }
 
 @media (min-width: 1000px) and (min-height: 800px) {
-    #screen {
+    .screen {
         width: 960px;
         height: 720px;
     }
 }
 
 @media (width:640px) and (height:480px) {
-    #screen {
+    .screen {
         width: 640px;
         height: 480px;
         border: 0;