add input to web runtime, add v0.1pre3 to site

examples/curlywas/skipahead.cwa

@@ -38,12 +38,6 @@ export fn upd() {
 
         if y == 180 & py > zero {
             if x > w | x < zero {
-
-                if btn(5) {
-                    pz = 5;
-                    px = 2 as f32;
-                }
-
                 return;
             }
             py = zero;

site/config.toml

@@ -13,6 +13,7 @@ theme = "juice"
 # Whether to do syntax highlighting
 # Theme can be customised by setting the `highlight_theme` variable to a theme supported by Zola
 highlight_code = true
+highlight_theme = "ascetic-white"
 
 [extra]
 # Put all your custom variables here

site/content/_index.md

@@ -5,13 +5,14 @@
 
 * [v0.1pre1](v0.1pre1)
 * [v0.1pre2](v0.1pre2)
+* [v0.1pre3](v0.1pre3)
 
 ## Spec
 
 MicroW8 loads WebAssembly modules with a maximum size of 256kb. You module needs to export
-a function `fn tic(time: i32)` which will be called once per frame.
-After calling `tic` MicroW8 will display the 320x256 8bpp framebuffer located
-at offset 120 in memory with the 32bpp palette located at 82040.
+a function `fn upd()` which will be called once per frame.
+After calling `upd` MicroW8 will display the 320x240 8bpp framebuffer located
+at offset 120 in memory with the 32bpp palette located at 0x13000.
 
 The memory has to be imported as `"env" "memory"` and has a maximum size of 256kb (4 pages).
 
@@ -40,6 +41,29 @@ Other imports provided by the platform, also all in module `env`:
 * `fn rectangle(x1: f32, y1: f32, x2: f32, y2: f32, color: i32)`
 * `fn circle(cx: f32, cy: f32, radius: f32, color: i32)`
 
+* `fn time() -> f32`
+* `fn isButtonPressed(btn: i32) -> i32`
+* `fn isButtonTriggered(btn: i32) -> i32`
+
+* `fn printChar(char: i32)`
+* `fn printString(ptr: i32)`
+* `fn printInt(num: i32)`
+
+### Memory map
+
+```
+00000-00040: user memory
+00040-00044: time since module start in ms
+00044-0004c: gamepad state
+0004c-00078: reserved
+00078-12c78: frame buffer
+12c78-13000: reserved
+13000-13400: palette
+13400-13c00: font
+13c00-14000: reserved
+14000-40000: user memory
+```
+
 ## `.uw8` format
 
 The first byte of the file specifies the format version:
@@ -62,7 +86,12 @@ types with up to 5 parameters (i32 or f32) where the
 Then it includes all imports that MicroW8 provides,
 a function section with a single function of type
 `(i32) -> void` and an export section that exports
-the first function in the file under the name `tic`.
+the first function in the file under the name `upd`.
+
+#### Format version `02`:
+
+Same as version `01` except everything after the first byte is compressed
+using a [custom LZ compression scheme](https://github.com/exoticorn/upkr).
 
 ## Tooling
 
@@ -82,7 +111,9 @@ Writing code for MicroW8 in C, Rust, AssemblyScript etc. should absolutely
 possible but no examples are provided, yet.
 
 ## Examples
-
-* [Technotunnel](v0.1pre2#AQrDAQHAAQIBfwp9A0AgAUEAsiABQcACb7JDmhkgQ5MiBCAEIASUIAFBwAJtQfgAa7IiBSAFlJKRIgaVIgcgByAAskHQD7KVIgIQAEPNzEw/lCIDlCAHIAeUIAOUIAOUQQGykiADIAOUk5GSIgiUIAOTQQqylCACkiIJqCAFIAaVIAiUQQqylCACkiIKqHMgCEEyspQgBpUiCyACkkEUspSocUEFcbJBArIgC5OUQRaylJeoOgB4IAFBAWoiAUGA2ARIDQALCw==) (199 bytes): A port of my [entry](https://tic80.com/play?cart=1873) in the Outline'21 bytebattle quater final
-* [XorScroll](v0.1pre2#AQovAS0BAX8DQCABIAFBwAJvIABBCm1qIAFBwAJtczoAeCABQQFqIgFBgNgESA0ACws=) (50 bytes): A simple scrolling XOR pattern. Fun fact: This is the pre-loaded effect when entering a bytebattle.
-* [CircleWorm](v0.1pre2#AQp7AXkCAX8CfUEgEA0DQCABskEEspUiAkECspUgALJBiCeylSIDQQWylJIQAEEBspJBoAGylCACQQOylSADQQSylJIQAEEBspJB+ACylCADQRGylCACQQKylJIQAEECspJBELKUIAFBAmxBP2oQEiABQQFqIgFBP0gNAAsL) (126 bytes): Just a test for the circle fill function.
+* [Skip Ahead](v0.1pre3#Agj9nQYWw+yYP6xi7SUL2urlNtvh2dOZFuYL4PUxAUz5qqATDey0JsAVat2VQKEOyXK1bE+3WiFK0GGhdi4VAd8Tlf3YuU7xfvvBwN4oNuIoY29jbbuEnEnPZFjC4ym9L2QDUmig+RsF++FubWcyqOt7CAFGNEaAiMISCIM43bfPQriE6sD3orstkMjH3LPOqeuUPpitgzaIsAf860CYHlrAG2t5CSjRGobcPLJ+CSeYjzZSLYs7+u2xpthsfoIvBnk1+xxwEWYfZOJ3Madfo5BME5nceVCQVOEBMCTLSE+xVCkyelOW) (231 bytes): A port of my [TIC-80 256byte game](http://tic80.com/play?cart=1735) from LoveByte'21
+* [OhNoAnotherTunnel](v0.1pre3#Apr9u4e6Rsy7tRABjq4o7dCGPLQR9dVTSGK9FWXemB7tybsZHT+TxtfHlarRbcekGcg7qZY/eK6/VVCp9ceNBXlh4v0QGS63LTzfEjb8XC4jg5KifbYBodSIS0DPVjwq32PbgjL2+C+QOCx6ZxqRYP0KQpcTxuBUKx1NXVM2EV4l0rEWBQW9SjLcbURKHYaRLcI4FOcLOfASFiQ4wFWgEBA0VD6hGdemN0tPYp9BfUaN) (177 bytes): A port of my [entry](http://tic80.com/play?cart=1871) in the Outline'21 bytebattle final
+* [Technotunnel](v0.1pre3#AkL/tETJ+XRrvcB8gD9brftZ26zjwEsiATnAd+szCtw3Haq41srEMFO8aDS71c2CX8W87RQ9EY3V+YuTn/2CPRfn6CpgxMHUnIxOEWhVDRULXeYGP70dTiL8tYLAc8LrBWay9h8jCX/4Jbb39XVnISlZNd7In4Mts9LvSkSIz/E0sBfhjwp65aeoSU8BNFZpyKlxU+u5DdBtuxx3bFE=) (158 bytes): A port of my [entry](https://tic80.com/play?cart=1873) in the Outline'21 bytebattle quater final
+* [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.

site/templates/_variables.html

@@ -7,8 +7,8 @@
         /* Primary theme link color */
         --primary-link-color: #8080a0;
         /* Secondary color: the background body color */
-        --secondary-color: #e4dfd7;
-        --secondary-text-color: #303030;
+        --secondary-color: #e0e0e8;
+        --secondary-text-color: #1a1818;
         /* Highlight text color of table of content */
         --toc-highlight-text-color: #d46e13;
     }

site/templates/index.html

@@ -4,7 +4,7 @@
         <section>
             <h1 class="text-center heading-text">A WebAssembly based sizecoding platform</h1>
         </section>
-        <a href="v0.1pre2">
+        <a href="v0.1pre3">
             <div class="demonstration-gif" style="width:640px;height:512px;background-color:black"></div>
         </a>
     </div>

src/lib.rs

@@ -24,6 +24,7 @@ struct UW8Instance {
     end_frame: TypedFunc<(), ()>,
     update: TypedFunc<(), ()>,
     start_time: Instant,
+    module: Vec<u8>
 }
 
 impl MicroW8 {
@@ -68,7 +69,7 @@ impl MicroW8 {
         self.load_from_memory(&module)
     }
 
-    pub fn load_from_memory(&mut self, module: &[u8]) -> Result<()> {
+    pub fn load_from_memory(&mut self, module_data: &[u8]) -> Result<()> {
         self.reset();
 
         let mut store = wasmtime::Store::new(&self.engine, ());
@@ -88,8 +89,8 @@ impl MicroW8 {
         let platform_module =
             wasmtime::Module::new(&self.engine, &memory.data(&store)[..platform_length])?;
 
-        memory.data_mut(&mut store)[..module.len()].copy_from_slice(module);
-        let module_length = load_uw8.call(&mut store, module.len() as i32)? as u32 as usize;
+        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())?;
@@ -139,6 +140,7 @@ impl MicroW8 {
             end_frame,
             update,
             start_time: Instant::now(),
+            module: module_data.into()
         });
 
         Ok(())
@@ -174,7 +176,11 @@ impl MicroW8 {
                     | palette[offset + 2] as u32;
             }
 
-            self.instance = Some(instance);
+            if self.window.is_key_pressed(Key::R, minifb::KeyRepeat::No) {
+                self.load_from_memory(&instance.module)?;
+            } else {
+                self.instance = Some(instance);
+            }
         }
 
         self.window

web/src/main.js

@@ -15,7 +15,56 @@ let imageData = canvasCtx.createImageData(320, 240);
 
 let cancelFunction;
 
+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) {
     if (cancelFunction) {
@@ -30,6 +79,8 @@ async function runModule(data) {
         return;
     }
 
+    currentData = data;
+
     let newURL = window.location.pathname;
     if (cartridgeSize <= 1024) {
         let dataString = '';
@@ -94,27 +145,36 @@ async function runModule(data) {
 
         let instance = await instantiate(data);
 
-        let buffer = new Uint32Array(imageData.data.buffer);
+        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 {
-                new Uint32Array(memory.buffer)[16] = Date.now() - startTime;
-                instance.exports.upd();
+                let now = Date.now();
+                if(now >= nextFrame) {
+                    let u32Mem = U32(memory.buffer);
+                    u32Mem[16] = now - startTime;
+                    u32Mem[17] = pad;
+                    instance.exports.upd();
 
-                let palette = new Uint32Array(memory.buffer.slice(0x13000, 0x13000 + 1024));
-                for (let i = 0; i < 320 * 240; ++i) {
-                    buffer[i] = palette[memU8[i + 120]] | 0xff000000;
+                    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);
                 }
-                canvasCtx.putImageData(imageData, 0, 0);
 
                 window.requestAnimationFrame(mainloop);
             } catch (err) {

web/src/style.css

@@ -41,6 +41,7 @@ a:hover {
     margin-bottom: 8px;
     border: 4px solid #303040;
     box-shadow: 5px 5px 20px black;
+    cursor: none;
 }
 
 #message {