无法移动Sprite

Question

即使在GameScene中的Sprite上设置了类后，我仍无法移动该Sprite。以下是我的GameplayScene类的代码。我没有包含我的Player类，因为代码非常基本。 （只是用if语句movePlayer布尔函数招式基于X位置）

import SpriteKit 

class GameplayScene: SKScene { 


var player: Player? // created new varible player for the scene, inherited the player class 

var canMove = false // created new varible for letting player move; false by default 

var moveLeft = false // created new varible to move player left; false by default 

var center: CGFloat? // created new varible to set center of screen 


override func didMoveToView(view: SKView) { 

    center = (self.scene?.size.width)!/(self.scene?.size.height)! //calculates center of screen 

    player.self?.childNodeWithName("Player") as? Player! // adds node "Player" within Player class(Player!) 

} 

override func update(currentTime: NSTimeInterval) { 

    managePlayer() //constantly checks if player can/is moving 

} 

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { 

    for touch in touches { 

     let location = touch.locationInNode(self) // gets location inside scene 

     if location.x > center { // if statement to check if user to taping screen on the right 

      moveLeft = false //moves player right 

     } else { 

      moveLeft = true 

     } 
    } 

    canMove = true 

} 

override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) { 

    canMove = false //says if player is not touching screen, the player will not move 
} 

func managePlayer() { 

    if canMove { 

     player?.movePlayer(moveLeft) //takes the Player varible(which has the class), then grabs the move player func, then checks argument moveLeft 
    } 

} 

}

Answer 1

添加球员= self.childNode（withName： “玩家”）为？ Player to func didMove in GameplayScene.swift

override func didMove(to view: SKView) { 
     print("didmove") 

     center = (self.scene?.size.width)!/(self.scene?.size.height)! 
     player = self.childNode(withName: "Player") as? Player 
    }