ios - Simple Gif like animation with Spritekit

Question

I can't really find a simple solution for this, every example I see only shows very complex solutions, but all I want is 2-3 images that cycle so it appears as if it is animated. Same effect as an animated Gif. For now I have this to create an image

MonsterNode = SKSpriteNode(imageNamed: "MonsterNode_GameScene")

but how would I set MonsterNode variable to an animation of this sort? I am really looking for the very least amount of code needed to achieve this.

Answer 1

The main idea is to use animateWithTextures for this task. You need to set all the frames that the sprite needs to animated and the displayed time of each frame. Then use repeatActionForever to run the animation loop.

// Add 3 frames
let f0 = SKTexture.init(imageNamed: "MonsterNode_GameScene_0")
let f1 = SKTexture.init(imageNamed: "MonsterNode_GameScene_1")
let f2 = SKTexture.init(imageNamed: "MonsterNode_GameScene_2")
let frames: [SKTexture] = [f0, f1, f2]

// Load the first frame as initialization
monsterNode = SKSpriteNode(imageNamed: "MonsterNode_GameScene_0")
monsterNode.position = CGPoint(x: CGRectGetMidX(self.frame), y: CGRectGetMidY(self.frame))

// Change the frame per 0.2 sec
let animation = SKAction.animateWithTextures(frames, timePerFrame: 0.2)
monsterNode.runAction(SKAction.repeatActionForever(animation))

self.addChild(monsterNode)