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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Opcode — WASM Language</title>
<style>
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;700&family=Space+Grotesk:wght@300;400;500;600;700&family=DM+Sans:wght@300;400;500;700&display=swap');
:root {
--bg: #060610;
--surface: #0e0e1a;
--surface2: #161624;
--border: #1e1e32;
--text: #c8c8e0;
--text2: #5a5a80;
--accent: #ff6b2b;
--accent2: #ff8f5e;
--green: #4ade80;
--red: #f87171;
--blue: #60a5fa;
--purple: #a78bfa;
--yellow: #fbbf24;
--cyan: #22d3ee;
--mono: 'JetBrains Mono', monospace;
--sans: 'DM Sans', sans-serif;
--display: 'Space Grotesk', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
height: 100%;
background: var(--bg);
color: var(--text);
font-family: var(--sans);
overflow: hidden;
}
#app {
display: grid;
grid-template-rows: 44px 1fr 28px;
height: 100vh;
}
/* ── Header ── */
header {
display: flex;
align-items: center;
gap: 12px;
padding: 0 16px;
background: var(--surface);
border-bottom: 1px solid var(--border);
z-index: 10;
}
.logo {
font-family: var(--display);
font-weight: 700;
font-size: 18px;
letter-spacing: -0.5px;
color: var(--accent);
user-select: none;
}
.logo span { color: var(--text2); font-weight: 300; font-size: 11px; margin-left: 6px; letter-spacing: 0; }
header nav {
display: flex;
gap: 4px;
margin-left: auto;
}
header button {
font-family: var(--mono);
font-size: 11px;
font-weight: 500;
padding: 5px 12px;
border: 1px solid var(--border);
border-radius: 5px;
background: var(--surface2);
color: var(--text);
cursor: pointer;
transition: all 0.15s;
}
header button:hover {
border-color: var(--accent);
color: var(--accent);
}
.run-btn {
background: var(--accent) !important;
color: #fff !important;
border-color: var(--accent) !important;
font-weight: 700 !important;
}
.run-btn:hover {
background: var(--accent2) !important;
border-color: var(--accent2) !important;
color: #fff !important;
}
/* ── Main layout ── */
main {
display: grid;
grid-template-columns: 1fr 1fr;
overflow: hidden;
}
/* ── Editor pane ── */
.editor-pane {
display: flex;
flex-direction: column;
border-right: 1px solid var(--border);
overflow: hidden;
}
.toolbar {
display: flex;
align-items: center;
gap: 6px;
padding: 6px 12px;
background: var(--surface);
border-bottom: 1px solid var(--border);
font-family: var(--mono);
font-size: 11px;
color: var(--text2);
}
.toolbar .file-tab {
color: var(--text);
background: var(--surface2);
padding: 3px 10px;
border-radius: 4px;
border: 1px solid var(--border);
}
.editor-wrap {
flex: 1;
overflow: hidden;
position: relative;
background: var(--bg);
}
.minimap {
position: absolute;
top: 0;
right: 0;
width: 60px;
height: 100%;
overflow: hidden;
cursor: pointer;
z-index: 5;
border-left: 1px solid var(--border);
background: rgba(6,6,16,0.85);
}
.minimap canvas {
width: 100%;
height: 100%;
display: block;
image-rendering: pixelated;
}
.minimap .mm-viewport {
position: absolute;
left: 0;
right: 0;
background: rgba(255,107,43,0.08);
border: 1px solid rgba(255,107,43,0.25);
border-left: none;
border-right: none;
pointer-events: none;
transition: top 0.06s ease-out, height 0.06s ease-out;
}
@media (max-width: 800px) { .minimap { display: none; } }
#editor {
width: 100%;
height: 100%;
margin: 0;
padding: 0 0 0 56px;
background: var(--bg);
color: rgba(0,0,0,0);
caret-color: #fff;
font-family: var(--mono);
font-size: 13px;
line-height: 1.6;
border: none;
outline: none;
resize: none;
tab-size: 2;
white-space: pre;
overflow-wrap: normal;
overflow: auto;
-webkit-appearance: none;
-webkit-text-fill-color: transparent;
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
z-index: 2;
}
.highlight-layer {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
padding: 0 0 0 56px;
font-family: var(--mono);
font-size: 13px;
line-height: 1.6;
white-space: pre;
overflow: hidden;
pointer-events: none;
z-index: 3;
color: #e8e8f8;
}
.highlight-inner {
display: inline-block;
}
.highlight-layer .kw { color: #5cb8ff; font-weight: 700; }
.highlight-layer .op { color: #6fffb0; }
.highlight-layer .delim { color: #ff8040; font-weight: 700; }
.highlight-layer .num { color: #d9a0ff; }
.highlight-layer .cmt { color: #6a6a8a; }
.highlight-layer .str { color: #ffe066; }
.line-numbers {
position: absolute;
top: 0;
left: 0;
width: 48px;
padding: 0;
margin: 0;
font-family: var(--mono);
font-size: 13px;
line-height: 1.6;
user-select: none;
pointer-events: none;
overflow: hidden;
white-space: pre;
text-align: right;
color: var(--text2);
z-index: 4;
background: var(--bg);
}
.ln {
display: block;
padding-right: 8px;
color: var(--text2);
opacity: 0.4;
}
.ln.loop {
opacity: 1;
color: inherit;
}
.ln.loop-1 {
color: #cc5520;
background: rgba(255, 107, 43, 0.06);
border-right: 2px solid rgba(255, 107, 43, 0.4);
}
.ln.loop-2 {
color: #ff6b2b;
background: rgba(255, 107, 43, 0.14);
border-right: 2px solid rgba(255, 107, 43, 0.7);
}
.ln.loop-3 {
color: #ff8f5e;
background: rgba(255, 107, 43, 0.22);
border-right: 2px solid rgba(255, 107, 43, 0.9);
}
.ln.loop-4 {
color: #ffb890;
background: rgba(255, 184, 144, 0.30);
border-right: 2px solid rgba(255, 184, 144, 1);
}
.ln.delim {
color: var(--accent) !important;
opacity: 1 !important;
}
.ln.err-line {
color: var(--red) !important;
opacity: 1 !important;
background: rgba(248, 113, 113, 0.15);
border-right: 2px solid var(--red);
}
.highlight-layer .err-underline {
background: rgba(248, 113, 113, 0.18);
border-bottom: 1.5px wavy var(--red);
}
.ac-popup {
display: none;
position: absolute;
z-index: 20;
background: var(--surface);
border: 1px solid var(--border);
border-radius: 6px;
box-shadow: 0 6px 20px rgba(0,0,0,0.5);
max-height: 180px;
overflow-y: auto;
overflow-x: hidden;
min-width: 130px;
padding: 3px 0;
}
.ac-popup .ac-item {
padding: 3px 10px;
font-family: var(--mono);
font-size: 12px;
color: var(--text);
cursor: pointer;
display: flex;
align-items: center;
gap: 8px;
white-space: nowrap;
}
.ac-popup .ac-item.sel {
background: var(--accent);
color: #fff;
}
.ac-popup .ac-item:hover:not(.sel) {
background: var(--surface2);
}
.ac-popup .ac-item .ac-kind {
font-size: 9px;
color: var(--text2);
opacity: 0.7;
margin-left: auto;
padding-left: 12px;
}
.ac-popup .ac-item.sel .ac-kind { color: rgba(255,255,255,0.7); }
/* ── Output pane ── */
.output-pane {
display: flex;
flex-direction: column;
overflow: hidden;
background: var(--bg);
}
.output-tabs {
display: flex;
align-items: center;
gap: 0;
background: var(--surface);
border-bottom: 1px solid var(--border);
padding: 0 8px;
}
.output-tabs button {
font-family: var(--mono);
font-size: 11px;
padding: 7px 12px;
background: none;
border: none;
border-bottom: 2px solid transparent;
color: var(--text2);
cursor: pointer;
transition: all 0.15s;
}
.output-tabs button.active {
color: var(--accent);
border-bottom-color: var(--accent);
}
.output-tabs button:hover { color: var(--text); }
.output-tabs .compile-info {
margin-left: auto;
font-family: var(--mono);
font-size: 11px;
color: var(--text2);
}
.output-tabs .compile-info .ok { color: var(--green); }
.output-tabs .compile-info .err { color: var(--red); }
.output-content {
flex: 1;
position: relative;
overflow: hidden;
}
#canvas-out {
width: 100%;
height: 100%;
display: block;
background: #000;
image-rendering: pixelated;
}
#console-out {
display: none;
width: 100%;
height: 100%;
padding: 12px;
overflow: auto;
font-family: var(--mono);
font-size: 12px;
line-height: 1.6;
color: var(--green);
background: var(--bg);
white-space: pre-wrap;
}
#wasm-out {
display: none;
width: 100%;
height: 100%;
padding: 12px;
overflow: auto;
font-family: var(--mono);
font-size: 11px;
line-height: 1.5;
color: var(--cyan);
background: var(--bg);
white-space: pre-wrap;
}
/* ── Status bar ── */
footer {
display: flex;
align-items: center;
padding: 0 12px;
gap: 16px;
background: var(--surface);
border-top: 1px solid var(--border);
font-family: var(--mono);
font-size: 11px;
color: var(--text2);
}
footer .status-dot {
width: 7px;
height: 7px;
border-radius: 50%;
background: var(--green);
display: inline-block;
}
footer .fps { margin-left: auto; color: var(--yellow); }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text2); }
::selection { background: rgba(255, 107, 43, 0.25); }
#btn-examples {
font-family: var(--mono);
font-size: 11px;
font-weight: 500;
padding: 4px 8px;
border: 1px solid var(--border);
border-radius: 5px;
background: var(--surface2);
color: var(--text);
cursor: pointer;
transition: all 0.15s;
-webkit-appearance: none;
appearance: none;
}
#btn-examples:hover { border-color: var(--accent); color: var(--accent); }
#btn-examples option { background: var(--surface); color: var(--text); }
#help-out {
display: none;
width: 100%;
height: 100%;
padding: 16px 20px;
overflow: auto;
font-family: var(--sans);
font-size: 13px;
line-height: 1.7;
color: var(--text);
background: var(--bg);
}
#help-out h2 { font-family: var(--display); font-size: 16px; color: var(--accent); margin: 18px 0 6px 0; font-weight: 600; }
#help-out h2:first-child { margin-top: 0; }
#help-out code { font-family: var(--mono); font-size: 12px; background: var(--surface2); padding: 1px 5px; border-radius: 3px; color: #5cb8ff; }
#help-out .kw-row { display: flex; gap: 10px; padding: 2px 0; border-bottom: 1px solid var(--border); }
#help-out .kw-name { font-family: var(--mono); font-size: 12px; color: #5cb8ff; font-weight: 700; min-width: 160px; flex-shrink: 0; }
#help-out .kw-desc { color: var(--text); flex: 1; }
#help-out .section-intro { color: var(--text2); margin-bottom: 8px; }
#help-out .tip { color: var(--yellow); font-size: 12px; margin-top: 3px; }
@media (max-width: 800px) {
#app {
grid-template-rows: auto 1fr auto;
height: 100vh;
overflow: hidden;
}
main {
grid-template-columns: 1fr;
grid-template-rows: 1fr;
overflow: hidden;
}
/* On mobile, show one pane at a time, each fills the screen */
.editor-pane {
border-right: none !important;
display: flex;
overflow: hidden;
}
#editor {
font-size: 13px !important;
padding-left: 56px !important;
}
.output-pane {
display: none;
overflow: hidden;
}
.output-content {
overflow: auto !important;
}
#help-out {
overflow: auto !important;
}
#console-out {
overflow: auto !important;
}
#app.mobile-output .editor-pane { display: none; }
#app.mobile-output .output-pane { display: flex; }
.highlight-layer {
font-size: 13px !important;
padding-left: 56px !important;
}
.line-numbers {
font-size: 13px !important;
}
header {
display: flex;
flex-wrap: wrap;
gap: 3px;
padding: 4px 6px;
min-height: auto;
}
header .logo { font-size: 14px; flex-shrink: 0; }
.logo span { display: none; }
header nav {
display: flex;
flex-wrap: wrap;
gap: 3px;
flex: 1;
min-width: 0;
}
header button, header select {
font-size: 9px !important;
padding: 4px 6px !important;
white-space: nowrap;
}
.run-btn { order: -1; }
#btn-stop { order: -1; }
/* Mobile pane toggle button */
.mobile-toggle {
display: block !important;
order: -2;
}
/* Help fits screen */
#help-out .kw-row { flex-wrap: wrap; gap: 2px; }
#help-out .kw-name { min-width: auto; }
/* Fullscreen canvas when running on mobile */
#app.mobile-running header nav button:not(#btn-stop):not(.mobile-toggle),
#app.mobile-running header nav select { display: none; }
#app.mobile-running header { min-height: 32px; }
#app.mobile-running .editor-pane { display: none; }
#app.mobile-running .output-pane { display: flex; }
#app.mobile-running .output-tabs { display: none; }
#app.mobile-running footer { display: none; }
#app.mobile-running { grid-template-rows: 32px 1fr; }
}
.dpad {
display: none;
position: fixed;
bottom: 140px;
left: 12px;
z-index: 100;
pointer-events: none;
}
.dpad button {
position: absolute;
width: 48px;
height: 48px;
border: 1px solid rgba(255,107,43,0.5);
border-radius: 10px;
background: rgba(14,14,26,0.8);
color: var(--accent);
font-size: 20px;
font-family: var(--mono);
cursor: pointer;
touch-action: none;
-webkit-tap-highlight-color: transparent;
user-select: none;
pointer-events: auto;
}
.dpad button:active { background: rgba(255,107,43,0.35); }
.dpad .dp-up { left: 52px; top: 0; }
.dpad .dp-down { left: 52px; top: 104px; }
.dpad .dp-left { left: 0; top: 52px; }
.dpad .dp-right { left: 104px; top: 52px; }
.dpad .dp-fire {
position: fixed;
right: 16px;
bottom: 180px;
left: auto;
top: auto;
width: 60px;
height: 60px;
border-radius: 50%;
font-size: 14px;
font-weight: 700;
background: rgba(255,107,43,0.25);
border-color: rgba(255,107,43,0.6);
}
.dpad .dp-fire2 {
position: fixed;
right: 16px;
bottom: 110px;
left: auto;
top: auto;
width: 60px;
height: 60px;
border-radius: 50%;
font-size: 18px;
font-weight: 700;
background: rgba(96,165,250,0.2);
border-color: rgba(96,165,250,0.5);
display: none;
}
.dpad.show-fire2 .dp-fire2 { display: block; }
@media (pointer: coarse) {
.dpad.active { display: block; }
}
</style>
</head>
<body>
<div id="app">
<header>
<div class="logo">opcode<span>v0.5 — wasm lang</span></div>
<nav>
<button id="btn-new">+ NEW</button>
<button id="btn-save">SAVE</button>
<button id="btn-load">LOAD</button>
<select id="btn-examples"><option value="">examples ▾</option></select>
<button id="btn-help">HELP</button>
<button id="btn-export">EXPORT</button>
<button id="btn-share">SHARE</button>
<button class="run-btn" id="btn-run">▶ RUN</button>
<button class="mobile-toggle" id="btn-toggle" style="display:none;">VIEW</button>
<button id="btn-stop">■ STOP</button>
</nav>
</header>
<main>
<div class="editor-pane">
<div class="toolbar">
<span class="file-tab">main.opcode</span>
<span id="cursor-pos">1:1</span>
</div>
<div class="editor-wrap">
<div class="line-numbers" id="line-nums"></div>
<div class="highlight-layer" id="highlight-layer"></div>
<textarea id="editor" spellcheck="false"></textarea>
<div class="ac-popup" id="ac-popup"></div>
<div class="minimap" id="minimap">
<canvas id="mm-canvas"></canvas>
<div class="mm-viewport" id="mm-viewport"></div>
</div>
</div>
</div>
<div class="output-pane">
<div class="output-tabs">
<button class="active" data-tab="canvas">canvas</button>
<button data-tab="console">console</button>
<button data-tab="wasm">wasm</button>
<button data-tab="help">help</button>
<span class="compile-info" id="compile-info"></span>
</div>
<div class="output-content">
<canvas id="canvas-out" width="800" height="600"></canvas>
<canvas id="canvas-3d" width="800" height="600" style="display:none;position:absolute;top:0;left:0;width:100%;height:100%;z-index:2;"></canvas>
<div id="console-out"></div>
<div id="wasm-out"></div>
<div id="help-out"></div>
</div>
</div>
</main>
<div class="dpad" id="dpad">
<button class="dp-up">↑</button>
<button class="dp-down">↓</button>
<button class="dp-left">←</button>
<button class="dp-right">→</button>
<button class="dp-fire">▲</button>
<button class="dp-fire2">▼</button>
</div>
<footer>
<span class="status-dot" id="status-dot"></span>
<span id="status-text">ready</span>
<span id="wasm-size"></span>
<span class="fps" id="fps-display"></span>
</footer>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
<script>
// ╔══════════════════════════════════════════════════╗
// ║ OPCODE — A WASM-targeting language ║
// ║ Compiles directly to WASM bytecode in-browser ║
// ╚══════════════════════════════════════════════════╝
// ── Examples ──
const EXAMPLES = {
"particle_sim": `// Particle Sim — structs + arrays
struct particle x y vx vy life r g b
let COUNT = 500
let W = 800
let H = 600
let G = 0.08
func init,
array parts COUNT
let i = 0
loop i < COUNT,
let p = new particle
put p x = rand * W
put p y = rand * H
put p vx = (rand - 0.5) * 4
put p vy = (rand - 0.5) * 4
put p life = rand * 200 + 55
put p r = rand * 255
put p g = rand * 128
put p b = rand * 50
set parts i = p
i = i + 1
.
.
func tick,
fill 0 0 0
rect 0 0 W H
let i = 0
loop i < COUNT,
let p = get parts i
let x = of p x
let y = of p y
let vx = of p vx
let vy = of p vy
let life = of p life
vy = vy + G
x = x + vx
y = y + vy
life = life - 1
if y > H, y = H ; vy = vy * -0.6 .
if x < 0, x = W ; vx = vx * -1 .
if x > W, x = 0 ; vx = vx * -1 .
if life < 0,
x = rand * W
y = 0
vx = (rand - 0.5) * 6
vy = rand * 2
life = rand * 200 + 55
put p r = rand * 255
put p g = rand * 128
put p b = rand * 50
.
put p x = x
put p y = y
put p vx = vx
put p vy = vy
put p life = life
fill (of p r) (of p g) (of p b)
rect x y 2 2
i = i + 1
.
.
export init
export tick`,
"mandelbrot": `// Mandelbrot Set — computed in WASM
let WIDTH = 800
let HEIGHT = 600
let MAX_ITER = 80
func render,
let py = 0
loop py < HEIGHT,
let px = 0
loop px < WIDTH,
let x0 = (px / WIDTH) * 3.5 - 2.5
let y0 = (py / HEIGHT) * 2.0 - 1.0
let x = 0.0
let y = 0.0
let iter = 0
loop (x*x + y*y) < 4,
if iter >= MAX_ITER,
break
.
let xt = x*x - y*y + x0
y = 2*x*y + y0
x = xt
iter = iter + 1
.
let bright = iter / MAX_ITER
let idx = (py * WIDTH + px) * 4
pixel idx = bright * 40
pixel idx + 1 = bright * 120 + 40
pixel idx + 2 = bright * 255
pixel idx + 3 = 255
px = px + 1
.
py = py + 1
.
.
export render`,
"nbody": `// N-Body gravity simulation
let N = 256
let STRIDE = 6 // x, y, vx, vy, mass, pad
let DT = 0.016
let SOFTENING = 10.0
func init,
let i = 0
loop i < N,
let b = i * STRIDE
store b = rand * 780 + 10
store b + 1 = rand * 580 + 10
store b + 2 = (rand - 0.5) * 0.5
store b + 3 = (rand - 0.5) * 0.5
store b + 4 = rand * 3 + 0.5
i = i + 1
.
.
func tick,
let i = 0
loop i < N,
let bi = i * STRIDE
let xi = load bi
let yi = load (bi + 1)
let ax = 0.0
let ay = 0.0
let j = 0
loop j < N,
if j != i,
let bj = j * STRIDE
let dx = load bj - xi
let dy = load (bj + 1) - yi
let dd = sqrt dx*dx + dy*dy + SOFTENING
let f = load (bj + 4) / (dd * dd * dd)
ax = ax + dx * f
ay = ay + dy * f
.
j = j + 1
.
store bi + 2 = load (bi + 2) + ax * DT
store bi + 3 = load (bi + 3) + ay * DT
store bi = load bi + load (bi + 2) * DT
store bi + 1 = load (bi + 1) + load (bi + 3) * DT
i = i + 1
.
.
export init
export tick`,
"drawing": `// Interactive Drawing Demo
// Move mouse/touch, click to drop circles
// Arrow keys change color
let r = 255
let g = 100
let b = 50
func init,
clear
fill 30 30 40
rect 0 0 800 600
.
func tick,
let mx = mousex
let my = mousey
// Change color with keys
if down 37,
r = r - 2
if r < 0, r = 0 .
.
if down 39,
r = r + 2
if r > 255, r = 255 .
.
if down 38,
g = g + 2
if g > 255, g = 255 .
.
if down 40,
g = g - 2
if g < 0, g = 0 .
.
// Draw cursor
fill r g b
circle mx my 4
// Click drops a big circle
if click,
fill r g b
circle mx my 20
.
.
export init
export tick`,
"calculator": `// Calculator
// Type a number, press +/-/*/div
// Type second number, press =
let result = 0
let op = 0
let prev = 0
func init,
clear
fill 20 20 35
rect 0 0 800 600
.
func tick,
let val = input 0
// Background
fill 20 20 35
rect 180 40 420 220
// Operator buttons
fill 70 70 110
rect 200 60 90 50
fill 255 255 255
text 240 93 43
fill 70 70 110
rect 300 60 90 50
fill 255 255 255
text 340 93 45
fill 70 70 110
rect 400 60 90 50
fill 255 255 255
text 440 93 42
fill 70 70 110
rect 500 60 90 50
fill 255 255 255
text 540 93 47
// Equals button
fill 255 107 43
rect 200 130 390 50
fill 255 255 255
text 385 163 61
// Result display area
fill 35 35 55
rect 200 200 390 50