使用PhysicsBodys的基本Swift SpriteKit碰撞 [英] Basic Swift SpriteKit Collisions using PhysicsBodys
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：
https://www.raywenderlich.com/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: https://www.raywenderlich.com/123393/how-to-create-a-breakout-game-with-sprite-kit-and-swift
这篇关于使用PhysicsBodys的基本Swift SpriteKit碰撞的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
