使用PhysicsBodys的基本Swift SpriteKit碰撞

本文介绍了使用PhysicsBodys的基本Swift SpriteKit碰撞的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

问题：我似乎在让玩家与硬币碰撞时遇到了一些麻烦，并在碰撞时向硬币标签添加了+1。玩家接触硬币后应继续移动。

The problem: I seem to be having a little trouble getting my player to collide with a coin, and adding +1 to a coinLabel upon the collision. The player should continue moving after coming in contact with the coin.

我现在拥有的东西：有了我现在拥有的代码，玩家便可以旅行穿过硬币，但没有发生碰撞，并且+1没有添加到硬币标签中。

What I have now: With the code I have now, the player travels through the coin, but there is no collision that takes place and +1 isn't added to the coin label.

我仍在学习快速语言，因此，我感谢提供的任何帮助。

I am still learning the swift language, so I appreciate any help that is given.

代码：

struct ColliderType { static let playerCategory: UInt32 = 0x1 << 0 static let boundary: UInt32 = 0x1 << 1 ​ ​static let coinCategory: UInt32 = 0x1 << 2 ​ ​static let bodyA: UInt32 = 0x1 << 4 ​ ​static let bodyB: UInt32 = 0x1 << 8 } ​override func didMoveToView(view: SKView) { ​ var coinInt = 0 ​ ​ ​ ​self.physicsWorld.gravity = CGVectorMake(0.0, -7.0) physicsWorld.contactDelegate = self player = SKSpriteNode(imageNamed: "player") player.zPosition = 1 player.position = CGPoint(x: CGRectGetMidX(self.frame), y: CGRectGetMidY(self.frame)) player.physicsBody = SKPhysicsBody(circleOfRadius: player.size.width / 5.12) player.physicsBody?.dynamic = true player.physicsBody?.allowsRotation = false self.addChild(player) generateCoins() ​ ​ coin = SKSpriteNode( imageNamed: "coin") coin.physicsBody? = SKPhysicsBody(circleOfRadius: coin.size.height / 10) coin.physicsBody?.dynamic = false coin.physicsBody?.allowsRotation = false coin.zPosition = 1 ​self.addChild(coin) ​ player.physicsBody?.categoryBitMask = ColliderType.playerCategory ​player.physicsBody?.contactTestBitMask = ColliderType.boundary player.physicsBody?.collisionBitMask = ColliderType.coinCategory | ColliderType.boundary coin.physicsBody?.categoryBitMask = ColliderType.coinCategory coin.physicsBody?.contactTestBitMask = ColliderType.playerCategory coin.physicsBody?.collisionBitMask = ColliderType.playerCategory func didPlayerCollideWithCoin(player: SKSpriteNode, coin: SKSpriteNode) { self.coin.removeFromParent() self.coin += 1 coinLabel.text = "\(coinInt)" } ​ ​ ​ ​func generateCoins() { if(self.actionForKey("spawning") != nil){return} let coinTimer = SKAction.waitForDuration(7, withRange: 2) let spawnCoin = SKAction.runBlock { self.coin = SKSpriteNode( imageNamed: "coin") self.coin.physicsBody = SKPhysicsBody(circleOfRadius: self.coin.size.height / 10) self.coin.name = "coin" self.coin.physicsBody?.dynamic = false self.coin.physicsBody?.allowsRotation = false var coinPosition = Array<CGPoint>() coinPosition.append((CGPoint(x:340, y:103))) coinPosition.append((CGPoint(x:340, y:148))) coinPosition.append((CGPoint(x:340, y:218))) coinPosition.append((CGPoint(x: 340, y:343))) let spawnLocation = coinPosition[Int(arc4random_uniform(UInt32(coinPosition.count)))] let action = SKAction.repeatActionForever(SKAction.moveToX(+self.xScale, duration: 4.4)) self.coin.runAction(action) self.coin.position = spawnLocation self.addChild(self.coin) print(spawnLocation) } let sequence = SKAction.sequence([coinTimer, spawnCoin]) self.runAction(SKAction.repeatActionForever(sequence), withKey: "spawning") } ​​ func didBeginContact(contact:SKPhysicsContact) { let bodyA: SKPhysicsBody = contact.bodyA let bodyB: SKPhysicsBody = contact.bodyB if ((bodyA.categoryBitMask == ColliderType.playerCategory) && (bodyB.categoryBitMask == ColliderType.coinCategory)){ didPlayerCollideWithCoin(bodyA.node as! SKSpriteNode, coin: bodyB.node as! SKSpriteNode) } ​ ​}

推荐答案

保持您的contactTestBitmasks不变，但删除玩家和硬币之间的冲撞位：

You could try leaving your contactTestBitmasks the same but remove the collisionBitmasks between the player and coin:

player.physicsBody?.categoryBitMask = ColliderType.playerCategory ​player.physicsBody?.contactTestBitMask = ColliderType.boundary player.physicsBody?.collisionBitMask = ColliderType.boundary coin.physicsBody?.categoryBitMask = ColliderType.coinCategory coin.physicsBody?.contactTestBitMask = ColliderType.playerCategory

这样，当玩家发生碰撞时

This way, when the player collides with a coin it will register, but it wont "bounce off" and will continue moving in the same direction.

*注：使用此硬币可能要求您使用

*Note: Using this MAY require you to use the

func didBeginContact(contact: SKPhysicsContact) {

代替方法

func didPlayerCollideWithCoin(player: SKSpriteNode, coin: SKSpriteNode) {

但是我建议您先使用didPlayerCollideWithCoin（）方法尝试。

But I recommend trying it with the didPlayerCollideWithCoin() method first.

func didBeginContact(contact: SKPhysicsContact) { var firstBody: SKPhysicsBody var secondBody: SKPhysicsBody if contact.bodyA.categoryBitMask < contact.bodyB.categoryBitMask { firstBody = contact.bodyA secondBody = contact.bodyB } else { firstBody = contact.bodyB secondBody = contact.bodyA } if firstBody.categoryBitMask == playerCategory && secondBody.categoryBitMask == coinCategory { print("Your player passes through the coin") score = score + 1 } }

有关更多详细信息，请参见Ray Wenderlich的本教程： www.raywenderlich/123393/how-to-create-a-breakout游戏与精灵工具包和迅捷游戏

For more details see this tutorial from Ray Wenderlich: www.raywenderlich/123393/how-to-create-a-breakout-game-with-sprite-kit-and-swift