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optimize skipahead some more

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This commit is contained in:
Dennis Ranke
2021-11-10 22:48:49 +01:00
parent 911c2e43ad
commit ee746d1cea
1 changed files with 7 additions and 10 deletions
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17
examples/wasm4/skipahead.cwa
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@@ -21,11 +21,11 @@ fn xorshift(state: i32) -> i32 {
export fn update() { export fn update() {
let y: i32; let y: i32;
loop lines { loop lines {
let z = (200 as f32 / (y := y + 1) as f32 + pz) as i32; let defer z = (200 as f32 / (y := y + 1) as f32 + pz) as i32;
let x = (xorshift(xorshift(xorshift(z))) & 3) as f32 / 2 as f32 - px; let defer x = (xorshift(xorshift(xorshift(z))) & 3) as f32 / 2 as f32 - px;
let w = 6 as f32 / sqrt(z as f32); let defer w = 6 as f32 / sqrt(z as f32);
let rx = 80 + (y as f32 * x) as i32; let defer rx = 80 + (y as f32 * x) as i32;
let rw = (y as f32 * w) as i32; let defer rw = (y as f32 * w) as i32;
let defer c = ((z & 1) + 2) * 17; let defer c = ((z & 1) + 2) * 17;
?20 = c; ?20 = c;
@@ -34,7 +34,7 @@ export fn update() {
rect(rx, y + 1, rw, y / 9); rect(rx, y + 1, rw, y / 9);
if y == 120 & py > 0.0 { if y == 120 & py > 0.0 {
if x+w < 0.0 | x > 0.0 { if x < -w | x > 0.0 {
return; return;
} }
py = 0.0; py = 0.0;
@@ -52,10 +52,7 @@ export fn update() {
let defer pad = ?22; let defer pad = ?22;
let defer control_speed = 0.03; let defer control_speed = 0.03;
px = px + (((pad >> 5) & 1) - ((pad >> 4) & 1)) as f32 * control_speed; px = px + (((pad >> 5) & 1) - ((pad >> 4) & 1)) as f32 * control_speed;
if pad & 1 { s = s + 0.1 - (f + control_speed) * (pad & 1) as f32;
s = s - f - control_speed;
}
s = s + 0.1;
py = py + s; py = py + s;
pz = pz + 0.05; pz = pz + 0.05;
f = f * 0.7; f = f * 0.7;