将代码添加到我的 update(_ currentTime: TimeInterval)
函数后,我的应用代码继续崩溃。是否有更好的方式来表达我的代码以使其不会崩溃?
import SpriteKit
import GameplayKit
class GameScene: SKScene {
var startScreen = SKSpriteNode()
var Ball = SKSpriteNode()
var playerPaddle = SKSpriteNode()
var computerPaddle = SKSpriteNode()
var playerScore = SKLabelNode()
var comScore = SKLabelNode()
override func didMove(to view: SKView) {
startScreen = childNode(withName: "startScreen") as! SKSpriteNode
Ball = childNode(withName: "Ball") as! SKSpriteNode
playerPaddle = childNode(withName: "playerPaddle") as! SKSpriteNode
computerPaddle = childNode(withName: "computerPaddle") as! SKSpriteNode
playerScore = childNode(withName: "playerScore") as! SKLabelNode
comScore = childNode(withName: "comScore") as! SKLabelNode
let bodyBorder = SKPhysicsBody(edgeLoopFrom: self.frame)
bodyBorder.friction = 0
bodyBorder.restitution = 1
self.physicsBody = bodyBorder
Ball.physicsBody?.applyImpulse(CGVector(dx:20, dy:10))
}
func gameBegin() {
playerScore.text = String(0)
comScore.text = String(0)
}
func playerPoint() {
var comScoreInt: Int = Int(comScore.text!)!
comScoreInt += 1
comScore.text = String(comScoreInt)
Ball.position = (CGPoint(x:0, y:0))
Ball.physicsBody?.applyImpulse(CGVector(dx:-20,dy:-10))
}
func comPoint() {
var playerScoreInt: Int = Int(playerScore.text!)!
playerScoreInt += 1
playerScore.text = String(playerScoreInt)
Ball.physicsBody?.applyImpulse(CGVector(dx:20,dy:10))
Ball.position = (CGPoint(x:0, y:0))
}
func pointCount() {
computerPaddle.run(SKAction.moveTo(y: Ball.position.y, duration: 0.5))
if Ball.position.x <= playerPaddle.position.x - 42 {
playerPoint()
} else if Ball.position.x >= computerPaddle.position.x + 42 {
comPoint()
}
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let location = touch.location(in: self)
playerPaddle.run(SKAction.moveTo(y: location.y, duration: 0.1))
}
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let location = touch.location(in: self)
playerPaddle.run(SKAction.moveTo(y: location.y, duration: 0))
}
}
override func update(_ currentTime: TimeInterval) {
pointCount()
}
}
我是 SpriteKit 的新手,所以我不知道如何让这段代码更有效率。帮助将不胜感激!
编辑:
速度很慢,识别得分和球位需要好几分钟。 playerScore/comScore.text代码没有问题,在gamescene.sks中设置为0
最佳答案
我认为问题出在 playerScore.text
或 comScore.text
可能是 nil
并且当您尝试强制解包时应用程序崩溃.在代码中,您在 func gameBegin()
中为 comScore.text
和 playerScore.text
赋值。但它不会在任何地方被调用。尝试在 didMoveto view
函数中调用该函数。
关于Swift 代码崩溃且无法正常工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45565788/