【发布时间】：2022-10-04 22:12:34
【问题描述】：
我收到错误消息：无法将“SKSpriteNode.Type”类型的值转换为预期的参数类型“SKSpriteNode”
当精灵节点敌人和小球发生碰撞时，我试图让碰撞子弹（）函数运行时遇到了麻烦。我愿意改变我的设置，但可能我一辈子都无法让这个功能正常工作。
导入 SpriteKit 导入 GameplayKit
类游戏场景：SKScene，SKPhysicsContactDelegate {
let mainballcategory:UInt32 = 0x1 << 0
let smallballcategory:UInt32 = 0x1 << 1
let enemycategory:UInt32 = 0x1 << 3
var Mainball = SKSpriteNode(imageNamed: "Ball")
var enemytimer = Timer()
override func didMove(to view: SKView) {
self.physicsWorld.contactDelegate = self
Mainball.size = CGSize(width: 100, height: 100)
Mainball.position = CGPoint(x:frame.width / 80, y:frame.height / 80)
Mainball.zPosition = 1.0
Mainball.physicsBody = SKPhysicsBody(circleOfRadius: Mainball.size.width/2)
Mainball.physicsBody?.categoryBitMask = mainballcategory
Mainball.physicsBody?.collisionBitMask = enemycategory
Mainball.physicsBody?.contactTestBitMask = enemycategory
Mainball.name = "Mainball"
Mainball.physicsBody?.affectedByGravity = false
self.addChild(Mainball)
Timer.scheduledTimer(withTimeInterval: 0.8, repeats: true) { timer in
let randomNumber = Int.random(in: 1...20)
print("Number: \(randomNumber)")
if randomNumber > 10 {
self.Enemies()
}
}
}
func didBegin(_ contact: SKPhysicsContact) {
let collision:UInt32 = contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask
if collision == smallballcategory | enemycategory {
collisionBullet(enemy: SKSpriteNode, smallball: SKSpriteNode)
}
}
func collisionBullet(enemy : SKSpriteNode, smallball : SKSpriteNode){
enemy.physicsBody!.isDynamic = true
enemy.physicsBody!.affectedByGravity = true
enemy.physicsBody!.mass = 6.0
smallball.physicsBody?.mass = 10.0
enemy.removeAllActions()
smallball.removeAllActions()
enemy.removeFromParent()
}
func touchDown(atPoint pos : CGPoint) {
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { self.touchDown(atPoint: t.location(in: self))
for _ in (touches ){
}
}
let smallball = SKSpriteNode(imageNamed: "Ball")
smallball.position = Mainball.position
smallball.size = CGSize(width: 30, height: 30)
smallball.physicsBody = SKPhysicsBody(circleOfRadius: smallball.size.width / 2)
smallball.physicsBody!.categoryBitMask = smallballcategory
smallball.physicsBody!.collisionBitMask = enemycategory
smallball.physicsBody!.contactTestBitMask = enemycategory
smallball.name = "smallball"
smallball.physicsBody!.isDynamic = true
smallball.physicsBody!.affectedByGravity = true
self.addChild(smallball)
for t in touches { self.touchDown(atPoint: t.location(in: self))
for touch in (touches ){
let spot = touch.location(in: self)
var dx = CGFloat(spot.x - Mainball.position.x)
var dy = CGFloat(spot.y - Mainball.position.y)
let magnitude = sqrt(dx * dx + dy * dy)
dx /= magnitude
dy /= magnitude
let vector = CGVector(dx: 35.0 * dx, dy: 35.0 * dy)
smallball.physicsBody!.applyImpulse(vector)
}
}
}
func Enemies(){
let enemy = SKSpriteNode(imageNamed: "Ball")
enemy.size = CGSize(width: 25, height: 25)
enemy.color = UIColor(red: 0.9, green: 0.1, blue: 0.1, alpha: 1.0)
enemy.colorBlendFactor = 1.0
//Physics
enemy.physicsBody = SKPhysicsBody(circleOfRadius: enemy.size.width / 2)
enemy.physicsBody!.categoryBitMask = enemycategory
enemy.physicsBody!.contactTestBitMask = smallballcategory | mainballcategory
enemy.physicsBody!.collisionBitMask = smallballcategory | mainballcategory
enemy.physicsBody!.isDynamic = false
enemy.name = "enemy"
let RandomPosNmbr = arc4random() % 6
switch RandomPosNmbr{
case 0:
enemy.position = CGPoint(x:self.view!.bounds.width, y:self.view!.bounds.height)
self.addChild(enemy)
break
case 1:
enemy.position = CGPoint(x:self.view!.bounds.width * -1, y:self.view!.bounds.height)
self.addChild(enemy)
break
case 2:
enemy.position = CGPoint(x:self.view!.bounds.width, y:self.view!.bounds.height * -1)
self.addChild(enemy)
break
case 3:
enemy.position = CGPoint(x:self.view!.bounds.width * -1, y:self.view!.bounds.height * -1)
self.addChild(enemy)
break
case 4:
enemy.position = CGPoint(x:self.view!.bounds.width / 10, y:self.view!.bounds.height * -1)
self.addChild(enemy)
break
case 5:
enemy.position = CGPoint(x:self.view!.bounds.width / 10, y:self.view!.bounds.height)
self.addChild(enemy)
break
default:
break
}
enemy.run(SKAction.move(to: Mainball.position, duration: 5))
}
override func update(_ currentTime: TimeInterval) {
}
}
【问题讨论】：
-
该消息是说您正在尝试将
SKSpriteNode（一种类型）传递给collisionBullet。您希望自己传递节点。从contact.bodyA.node和contact.bodyB.node获取它们。
标签： swift sprite-kit collision