Script hooks

function ready() {}              // node entered the scene
function update(dt) {}           // every frame
function onPress() {}            // Button / Mesh3D clicked
function onInput(e) {}           // raw pointer + keyboard
function onSignal(name, data) {} // game.emit from anywhere
function onCollide(other, side)  // physics contact
function onChange() / onSubmit() // TextInput

game API

game.find(name)   game.spawn(parent, type, props)   node.destroy()
game.tween(node, {x:100}, {duration:.4, easing:'backOut'})
game.after(s, fn)   game.every(s, fn)   game.time
game.emit(name, data)   game.on(name, fn)
game.playAnim('name', {onDone})   game.stopAnim('name')
game.audio.play('coin')  // click tick pop coin win lose jackpot spin whoosh
game.audio.tone({freq, type, duration, slide})
game.input.isDown('ArrowLeft')   game.input.pointer
game.rand(a,b) randInt pick clamp lerp   game.gotoScene(name)
particles.burst(30, {colors:['#ffd700'], up:-80})

Physics 2D

body: 'dynamic' | 'static' | 'area' · vx vy · gravityScale · bounce
dynamic nodes collide with statics + tilemaps (collision: true)

Physics 3D (Mesh3D)

body3d: 'dynamic' | 'static' · mass · friction · restitution
game.physics3d.impulse(node, x, y, z)
game.physics3d.setVelocity(node, x, y, z) · .velocity(node)
settings.physics.gravity3d (default -9.82)

Debugging

game.watch('hp', hp)  // shows in the play debug bar
pause ⏸ / step ⏭ buttons while playing · Errors panel lists
syntax errors live · Output panel logs exports

Shortcuts

Cmd/Ctrl+Enter play · Cmd/Ctrl+S save · Cmd/Ctrl+Z undo · Cmd/Ctrl+D duplicate
Cmd/Ctrl+1/2/3 viewport 2D/3D/Game · Del delete · F2/double-click rename
3D viewport: W move · E rotate · R scale · F focus selection · shift snaps
2D: drag move · empty drag pan · wheel zoom · shift+drag snap · arrows nudge
Timeline: scrub, edit node, ◆ Key · double-click row = key that track