Game Development Reference
In-Depth Information
foregroundNode!.addChild(orbNode)
}
}
Next, change the
init()
method of the
BlackHole
to take an
SKTextureAtlas
and then use this texture atlas to load all the textures going forward. This change is shown
in the following snippet:
init(textureAtlas: SKTextureAtlas) {
let frame0 = textureAtlas.textureNamed("BlackHole0")
let frame1 = textureAtlas.textureNamed("BlackHole1")
let frame2 = textureAtlas.textureNamed("BlackHole2")
let frame3 = textureAtlas.textureNamed("BlackHole3")
let frame4 = textureAtlas.textureNamed("BlackHole4")
let blackHoleTextures = [frame0, frame1, frame2,
frame3, frame4];
let animateAction =
SKAction.animateWithTextures(blackHoleTextures,
timePerFrame: 0.2)
let rotateAction
= SKAction.repeatActionForever(animateAction)
super.init(texture: frame0, color:
UIColor.clearColor(), size: frame0.size())
physicsBody = SKPhysicsBody(circleOfRadius: size.width
/ 2)
physicsBody!.dynamic = false
physicsBody!.categoryBitMask
= CollisionCategoryBlackHoles
physicsBody!.collisionBitMask = 0
name = "BLACK_HOLE"
runAction(rotateAction)
}
Finally, change
GameScene
's
addBlackHolesToForeground()
so that it passes
the
SKTextureAtlas
to the
BlackHole
, as shown here:
func addBlackHolesToForeground() {
var moveLeftAction = SKAction.moveToX(0.0, duration:
2.0)
