【发布时间】：2020-01-11 23:18:01
【问题描述】：
我是 sprite kit 的新手，我正在使用 Swift。尝试在英雄与右墙碰撞时检测到碰撞。当英雄与其他物体发生碰撞时，我可以检测到碰撞，但由于某种原因它不会检测到右墙。
再次，英雄会检测到与左墙的碰撞，但与右墙没有任何反应。 我被难住了...
在我的游戏场景中，这就是我设置所有内容的方式
class GameScene: SKScene, SKPhysicsContactDelegate {
enum contactType: UInt32 {
case heroCategory = 1
case fireCategory = 2
case rightTrapCategory = 4
case leftTrapCategory = 8
case leftWallCategory = 16
case rightWallCategory = 32
}
let leftTrap = SKSpriteNode()
let rightTrap = SKSpriteNode()
let fire = SKSpriteNode()
let hero = SKSpriteNode()
let leftWall = SKSpriteNode()
let rightWall = SKSpriteNode()
override func didMove(to view: SKView) {
physicsWorld.contactDelegate = self
addLeftWall()
addRightWall()
addFire()
addHero()
addLeftTrap()
addrightTrap()
}
这是我检测、排序和处理这些冲突的地方。
func collision(between Hero: SKNode, object: SKNode) {
switch object.name {
case "fire":
addHighscore()
destroy(hero: Hero)
gameOver()
case "rightTrap":
jumpCounter = 0
hero.color = .cyan
print("right trap")
case "leftTrap":
jumpCounter = 0
hero.color = .cyan
print("left Trap")
case "leftWall":
hero.color = .red
print("left wall")
case "rightWall":
hero.color = .red
print("right wall")
default:
print("something went wrong")
}
}
func didBegin(_ contact: SKPhysicsContact) {
if contact.bodyA.categoryBitMask < contact.bodyB.categoryBitMask {
collision(between: contact.bodyA.node!, object:contact.bodyB.node!)
}else if contact.bodyB.categoryBitMask < contact.bodyA.categoryBitMask{
collision(between: contact.bodyB.node!, object: contact.bodyA.node!)
}
}
我如何设置精灵
func addHero(){
hero.name = "hero"
hero.zPosition = 1
hero.color = .cyan
hero.size = CGSize(width: 25, height: 50)
hero.position = CGPoint(x: frame.midX, y: (frame.midY + 100))
hero.physicsBody = SKPhysicsBody(rectangleOf: CGSize(width: 25, height: 50))
hero.physicsBody?.restitution = 0.1
hero.physicsBody?.allowsRotation = false
hero.physicsBody?.categoryBitMask = contactType.heroCategory.rawValue
hero.physicsBody?.contactTestBitMask = contactType.fireCategory.rawValue
hero.physicsBody?.contactTestBitMask = contactType.leftTrapCategory.rawValue
hero.physicsBody?.contactTestBitMask = contactType.rightTrapCategory.rawValue
hero.physicsBody?.contactTestBitMask = contactType.rightWallCategory.rawValue
hero.physicsBody?.contactTestBitMask = contactType.leftWallCategory.rawValue
addChild(hero)
}
func addRightWall(){
rightWall.name = "rightWall"
rightWall.color = .red
rightWall.size = CGSize(width: 25, height: (frame.maxX / 2) + 25 )
rightWall.position = CGPoint(x: frame.maxX, y: (frame.midX + 200))
rightWall.anchorPoint = CGPoint(x: 1, y: 0.5)
let centerPoint = CGPoint(x: rightWall.size.width / 2 - (rightWall.size.width * rightWall.anchorPoint.x), y: rightWall.size.height / 2 - (rightWall.size.height * rightWall.anchorPoint.y))
rightWall.physicsBody = SKPhysicsBody(rectangleOf: rightWall.size, center: centerPoint)
rightWall.physicsBody?.isDynamic = false
rightWall.physicsBody?.categoryBitMask = contactType.rightWallCategory.rawValue
addChild(rightWall)
}
你可以看到，左墙精灵。
再次碰撞适用于左墙，但不适用于右墙。
func addLeftWall(){
leftWall.name = "leftWall"
leftWall.color = .red
leftWall.size = CGSize(width: 25, height: (frame.maxX / 2) + 25 )
leftWall.position = CGPoint(x: frame.minX, y: (frame.midX + 200))
leftWall.anchorPoint = CGPoint(x: 0, y: 0.5)
let centerPoint = CGPoint(x: leftWall.size.width / 2 - (leftWall.size.width * leftWall.anchorPoint.x), y: leftWall.size.height / 2 - (leftWall.size.height * leftWall.anchorPoint.y))
leftWall.physicsBody = SKPhysicsBody(rectangleOf: leftWall.size, center: centerPoint)
leftWall.physicsBody?.isDynamic = false
leftWall.physicsBody?.categoryBitMask = contactType.leftWallCategory.rawValue
addChild(leftWall)
}
【问题讨论】：
-
区分接触和碰撞。它们不一样。
-
你是对的，我错误地将其标记为碰撞问题。
-
你完全误解了我的建议。你最好把你的 Sprite Kit 书读一遍。
-
您已经做出了这样的声明，即您希望您的节点相互碰撞，而实际上您只使用
contactTestBitMask进行该工作。所以你的问题根本没有意义。 -
@ElTomato 英雄节点能够四处移动并与其他节点发生碰撞。我只想知道英雄节点是否与我列出的节点有联系。我将每个相应的节点设置为它们的类别，然后设置英雄节点 contactTestBitMap 以侦听每个其他节点类别。这很有效，当英雄接触到火、leftTrap、rightTrap、leftWall 时，我会收到通知，但是由于某种原因，我无法让它响应我的 rightwall 节点
标签： swift sprite-kit collision-detection