Question

我有这个在屏幕上下移动的圆圈，我想将这些动作随机化，所以它一遍又一遍不一样。例如，圆圈会上升几个点，然后一直向下并快速恢复。每次用户玩游戏时都会有所不同。这就是我现在所拥有的：

func addCircle() {

    circle.position = CGPointMake(self.size.width / 2, self.size.height / 2.0)
    circle.zPosition = 32
    circle.physicsBody = SKPhysicsBody(circleOfRadius: 75)
    circle.physicsBody?.dynamic = false
    circle.physicsBody?.categoryBitMask = CircleCategory
    circle.physicsBody?.contactTestBitMask = HeroCategory
    circle.physicsBody?.collisionBitMask = CircleCategory



    let moveDown = SKAction.moveToY(-circle.frame.size.height + 220, duration: 2.5)
    let moveUp = SKAction.moveToY(700, duration: 2.5)
    let sequenceUpAndDown = SKAction.sequence([moveDown, moveUp])
    let repeatSequence = SKAction.repeatActionForever(sequenceUpAndDown)
    circle.runAction(repeatSequence)
    addChild(circle)

}

Answer 1

[...]
frame=   28 fps=0.0 q=-0.0 size=N/A time=00:00:01.16 bitrate=N/A speed=2.31x    
frame=   55 fps= 54 q=-0.0 size=N/A time=00:00:02.24 bitrate=N/A speed= 2.2x    
frame=   84 fps= 55 q=-0.0 size=N/A time=00:00:03.40 bitrate=N/A speed=2.22x    
frame=  112 fps= 54 q=-0.0 size=N/A time=00:00:04.52 bitrate=N/A speed=2.17x    
[...]

试一试

如何在Swift的屏幕范围内创建我的精灵的随机移动？

1 个答案: