swift - 如何根据触摸屏的时间使 Sprite 跳得更高/更小？

Question

嗨，我很难找到正确的代码来应用于我的 Sprite ，以允许仅在粘贴时进行小跳跃，而当手指在屏幕上停留较长时间时允许进行更高的跳跃。 (请在下面找到当前代码)

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



    /* Called when a touch begins */

    if (gameOver == 0){

        //Player Begin Jumping.
        player.physicsBody?.applyImpulse(CGVectorMake(0, 200))
        player.runAction(SKAction .playSoundFileNamed("sounds/Jump.caf", waitForCompletion: true))

    }

}

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

    if (gameOver == 0){

        //Player End Jump.
        player.physicsBody?.applyImpulse(CGVectorMake(0, -120))

Answer 1

您可以使用更新方法。在你的touchesBegan方法中，你设置一个 bool 值或类似的东西来显示你仍在屏幕上按下的update方法。例如:

//touchesBegan
touching = true

//update-method
if touching {
    player.physicsBody?.applyImpulse(CGVectorMake(0, 1))
}

//touchesEnded
touching = false

您必须更改 applyImpulse 才能满足您的需求。