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我正在尝试编写一个更酷的版本的Flappy Bird,其中的鸟变成了一些冷却器,这取决于分数。你的帮助真的很感激。这里是完整的代码,声明这只鸟。我怎么能做一个功能,更新鸟取决于分数?如何根据分数对SKSpriteNode进行更改?
let birdTexture1 = SKTexture(imageNamed: "bird-01")
birdTexture1.filteringMode = .nearest
let birdTexture2 = SKTexture(imageNamed: "bird-02")
birdTexture2.filteringMode = .nearest
let anim = SKAction.animate(with: [birdTexture1, birdTexture2], timePerFrame: 0.2)
let flap = SKAction.repeatForever(anim)
bird = SKSpriteNode(texture: birdTexture1)
bird.setScale(2.0)
bird.position = CGPoint(x: self.frame.size.width * 0.35, y:self.frame.size.height * 0.6)
bird.run(flap)
bird.physicsBody = SKPhysicsBody(circleOfRadius: bird.size.height/2.0)
bird.physicsBody?.isDynamic = true
bird.physicsBody?.allowsRotation = false
bird.physicsBody?.categoryBitMask = birdCategory
bird.physicsBody?.collisionBitMask = worldCategory | pipeCategory
bird.physicsBody?.contactTestBitMask = worldCategory | pipeCategory
self.addChild(bird)