Game object

type Game<S> = {
  view?: 'front' | 'side' // 'iso' and 'depth' are in development
  controls?: Controls | false
  init(context: {seed: number; me: {id: null; peer: null}}): S
  step(state: S, input: Input, world: World, dt: number): S
  draw(state: S, graphics: Gfx, world: World): void
  inspect?(state: S): object
}

State

JSON-compatible data only: no functions, canvases or connections. init and step have no side effects and never mutate the previous state.

Time

step runs at 60Hz, dt = 1/60.

Value	Meaning
`world.time`	seconds from completed ticks
`world.tick`	completed ticks
`world.seed`	seed, default 1
`world.caps`	`save / shared / room / ai`, all `false`

Player (standalone HTML only)

const player = GameLib.run(game, {canvas, seed: 42})
player.inspect()      // state copy
player.restart()      // same seed
player.pause()        // pause(false) resumes
player.stop()         // stop updates and input

One player per canvas. Call stop() before removing the canvas.

Headless

const simulation = GameLib.createSimulation(game, {seed: 42})
simulation.setInput('right', true)
for (let tick = 0; tick < 60; tick++) simulation.step()
simulation.inspect()

Same seed and inputs give the same result.