我正在制作一个小的 FlappyBird 克隆，并且让一切都正常工作，直到我更改了鸟的物理身体以精确到纹理。现在它所做的是，当它飞过管道的间隙时，它计算30分，而不仅仅是1分。
这只发生在我使用我需要的纹理精确物理体时，因为鸟不是圆形也不是矩形的。
我将如何进行碰撞，使其仅与每个间隙节点发生一次碰撞。我尝试在接触后将类别BitMask设置为0，但是之后的所有间隙都不再增加点数。
以下是完整的游戏代码：
var score = 0
class GameScene: SKScene, SKPhysicsContactDelegate {
var bird = SKSpriteNode()
var bg = SKSpriteNode()
var ground = SKSpriteNode()
var scoreLabel = SKLabelNode(fontNamed: "Candice")
var gameOverLabel = SKLabelNode(fontNamed: "Candice")
var countbg = SKSpriteNode()
var timer = Timer()
enum ColliderType: UInt32 {
case Bird = 1
case Object = 2
case Gap = 4
}
var gameOver = false
let swooshSound = SKAction.playSoundFileNamed("sfx_swooshing.wav", waitForCompletion: false)
let pointSound = SKAction.playSoundFileNamed("sfx_point.wav", waitForCompletion: false)
let hitSound = SKAction.playSoundFileNamed("sfx_hit.wav", waitForCompletion: false)
@objc func makePipes() {
let movePipes = SKAction.move(by: CGVector(dx: -2 * self.frame.width, dy: 0), duration: TimeInterval(self.frame.width / 150))
let removePipes = SKAction.removeFromParent()
let moveAndRemovePipes = SKAction.sequence([movePipes, removePipes])
let gapHeight = bird.size.height * 2.8
let movementAmount = arc4random() % UInt32(self.frame.height) / 2
let pipeOffset = CGFloat(movementAmount) - self.frame.height / 4
let pipeTexture = SKTexture(imageNamed: "pipe1.png")
let pipe1 = SKSpriteNode(texture: pipeTexture)
pipe1.position = CGPoint(x: self.frame.midX + self.frame.width, y: self.frame.midY + pipeTexture.size().height / 2 + gapHeight / 2 + pipeOffset)
pipe1.zPosition = 2
pipe1.run(moveAndRemovePipes)
pipe1.physicsBody = SKPhysicsBody(rectangleOf: pipeTexture.size())
pipe1.physicsBody!.isDynamic = false
pipe1.physicsBody!.contactTestBitMask = ColliderType.Object.rawValue
pipe1.physicsBody!.categoryBitMask = ColliderType.Object.rawValue
pipe1.physicsBody!.collisionBitMask = ColliderType.Object.rawValue
self.addChild(pipe1)
let pipe2Texture = SKTexture(imageNamed: "pipe2.png")
let pipe2 = SKSpriteNode(texture: pipe2Texture)
pipe2.position = CGPoint(x: self.frame.midX + self.frame.width, y: self.frame.midY - pipeTexture.size().height / 2 - gapHeight / 2 + pipeOffset)
pipe2.zPosition = 2
pipe2.run(moveAndRemovePipes)
pipe2.physicsBody = SKPhysicsBody(rectangleOf: pipe2Texture.size())
pipe2.physicsBody!.isDynamic = false
pipe2.physicsBody!.contactTestBitMask = ColliderType.Object.rawValue
pipe2.physicsBody!.categoryBitMask = ColliderType.Object.rawValue
pipe2.physicsBody!.collisionBitMask = ColliderType.Object.rawValue
self.addChild(pipe2)
let gap = SKNode()
gap.position = CGPoint(x: self.frame.midX + self.frame.width, y: self.frame.midY + pipeOffset)
gap.physicsBody = SKPhysicsBody(rectangleOf: CGSize(width: 1, height: gapHeight))
gap.physicsBody!.isDynamic = false
gap.run(moveAndRemovePipes)
gap.physicsBody!.contactTestBitMask = ColliderType.Bird.rawValue
gap.physicsBody!.categoryBitMask = ColliderType.Gap.rawValue
gap.physicsBody!.collisionBitMask = ColliderType.Gap.rawValue
self.addChild(gap)
}
func didBegin(_ contact: SKPhysicsContact) {
if gameOver == false {
if contact.bodyA.categoryBitMask == ColliderType.Gap.rawValue || contact.bodyB.categoryBitMask == ColliderType.Gap.rawValue {
score += 1
scoreLabel.text = String(format: "%05d", score)
run(pointSound)
} else {
self.speed = 0
run(hitSound)
gameOver = true
timer.invalidate()
bird.removeFromParent()
let changeSceneAction = SKAction.run(changeScene)
self.run(changeSceneAction)
}
}
}
//MARK: Change to Game Over Scene
func changeScene(){
let sceneToMoveTo = GameOverScene(size: self.size)
sceneToMoveTo.scaleMode = self.scaleMode
let myTransition = SKTransition.fade(withDuration: 0.5)
self.view!.presentScene(sceneToMoveTo, transition: myTransition)
}
override func didMove(to view: SKView) {
self.physicsWorld.contactDelegate = self
setupGame()
}
func setupGame() {
timer = Timer.scheduledTimer(timeInterval: 3, target: self, selector: #selector(self.makePipes), userInfo: nil, repeats: true)
let groundTexture = SKTexture(imageNamed: "ground.png")
let moveGroundAnimation = SKAction.move(by: CGVector(dx: -groundTexture.size().width, dy: 0), duration: 7)
let shiftGroundAnimation = SKAction.move(by: CGVector(dx: groundTexture.size().width, dy: 0), duration: 0)
let moveGroundForever = SKAction.repeatForever(SKAction.sequence([moveGroundAnimation, shiftGroundAnimation]))
var i: CGFloat = 0
while i < 3 {
ground = SKSpriteNode(texture: groundTexture)
ground.position = CGPoint(x: self.size.width * i, y: self.size.height / 7.65)
ground.zPosition = 3
ground.run(moveGroundForever)
self.addChild(ground)
i += 1
}
let bottom = SKNode()
bottom.position = CGPoint(x: self.frame.midX, y: self.size.height / 7)
bottom.physicsBody = SKPhysicsBody(rectangleOf: CGSize(width: self.frame.width, height: 1))
bottom.physicsBody!.isDynamic = false
bottom.physicsBody!.contactTestBitMask = ColliderType.Object.rawValue
bottom.physicsBody!.categoryBitMask = ColliderType.Object.rawValue
bottom.physicsBody!.collisionBitMask = ColliderType.Object.rawValue
self.addChild(bottom)
let bgTexture = SKTexture(imageNamed: "bg.png")
bg = SKSpriteNode(texture: bgTexture)
bg.position = CGPoint(x: self.frame.midX, y: self.frame.midY)
bg.size = self.frame.size
bg.zPosition = 1
self.addChild(bg)
let birdTexture = SKTexture(imageNamed: "flappy1.png")
let bird2Texture = SKTexture(imageNamed: "flappy2.png")
let bird3Texture = SKTexture(imageNamed: "flappy3.png")
let bird4Texture = SKTexture(imageNamed: "flappy4.png")
let bird5Texture = SKTexture(imageNamed: "flappy5.png")
let bird6Texture = SKTexture(imageNamed: "flappy6.png")
let animation = SKAction.animate(with: [birdTexture, bird2Texture, bird3Texture, bird4Texture, bird5Texture, bird6Texture], timePerFrame: 0.1)
let makeBirdFlap = SKAction.repeatForever(animation)
bird = SKSpriteNode(texture: birdTexture)
bird.position = CGPoint(x: self.frame.midX, y: self.frame.midY)
bird.setScale(1)
bird.zPosition = 6
bird.run(makeBirdFlap)
self.addChild(bird)
bird.physicsBody = SKPhysicsBody.init(circleOfRadius: birdTexture.size().height / 2)
//bird.physicsBody = SKPhysicsBody(texture: birdTexture, size: birdTexture.size())
bird.physicsBody!.isDynamic = false
bird.physicsBody!.contactTestBitMask = ColliderType.Object.rawValue
bird.physicsBody!.categoryBitMask = ColliderType.Bird.rawValue
bird.physicsBody!.collisionBitMask = ColliderType.Bird.rawValue
let countbg = SKSpriteNode(imageNamed: "count_bg.png")
countbg.position = CGPoint(x: self.size.width / 4.8, y: self.size.height * 0.94)
countbg.setScale(0.8)
countbg.zPosition = 4
addChild(countbg)
scoreLabel.fontSize = 80
scoreLabel.text = String(format: "%05d", score)
scoreLabel.fontColor = SKColor(red: 218/255, green: 115/255, blue: 76/255, alpha: 1)
scoreLabel.position = CGPoint(x: self.size.width / 4, y: self.size.height * 0.94)
scoreLabel.zPosition = 5
addChild(scoreLabel)
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if gameOver == false {
bird.physicsBody!.isDynamic = true
bird.physicsBody!.velocity = CGVector(dx: 0, dy: 0)
bird.physicsBody!.applyImpulse(CGVector(dx: 0, dy: 280))
//run(swooshSound)
} else {
gameOver = false
score = 0
self.speed = 1
self.removeAllChildren()
setupGame()
}
}
override func update(_ currentTime: TimeInterval) {
// Called before each frame is rendered
}
}
如果您使用 RxSwift，您将能够通过使用 debounce() 或 throttle() 或 distinctUntilChanged() 轻松摆脱这些额外的事件。如果您愿意尝试这种方法，请尝试RxSpriteKit框架。否则，请存储最后一个联系人的时间戳并忽略以下联系人，直到经过一段时间。