Make 2D Games with Tiniest2D

Your script can define these special functions that the engine calls automatically:

start()

Called once when the game begins. Use it for initialization.

func start() {
    setScene(level1)
    setX(player, 100)
    setY(player, 100)
    print("Game started!")
}

onUpdate(dt)

Called every frame. The dt parameter is the delta time (time since last frame in seconds).

var speed = 100

func onUpdate(dt) {
    if (isKeyHeld(KEY_RIGHT())) {
        setX(player, getX(player) + speed * dt)
    }
    if (isKeyHeld(KEY_LEFT())) {
        setX(player, getX(player) - speed * dt)
    }
}

UI is also drawn from onUpdate(dt). UI coordinates use a virtual screen-space resolution. By default that UI space is 100 x 100, and you can change it with setUIResolutionX() and setUIResolutionY(). Font size, font color, and element color can be pushed onto temporary per-frame stacks while you build the current UI.

var musicOn = true
var volume = 5

func onUpdate(dt) {
    uiPushElementColor(28, 40, 70, 220)
    uiBox(3, 3, 30, 26)
    uiPushFontSize(3)
    uiPushFontColor(255, 220, 120)
    uiLabel("PAUSED", 6, 6)
    uiPopFontColor()
    uiPopFontSize()

    uiPushFontSize(2)
    uiPushFontColor(240, 245, 255)
    if (uiButton("RESUME", 6, 12, 20, 6) == UI_CLICKED()) {
        paused = false
    }

    musicOn = uiToggle("MUSIC", musicOn, 6, 20, 22, 6)
    uiPopFontColor()
    uiPopFontSize()

    volume = uiSlider("VOL", volume, 0, 10, 6, 28, 24, 6)
    uiPopElementColor()
}

onCollision(objA, objB)

Called when two objects collide. objA is always either a Dynamic or Trigger object (see Collision System for details).

func onCollision(objA, objB) {
    var nameA = getName(objA)
    var nameB = getName(objB)

    if (nameA == "Player" && nameB == "Coin") {
        removeObject(level1, objB)
        score = score + 1
    }
}

end()

Called when the game shuts down.

func end() {
    print("Thanks for playing!")
}