我是Swift的新手。我正在尝试在while循环内为对象设置动画,但是直到while循环完成后屏幕才更新。如果我通过重复单击一个按钮来运行while循环所处的功能,则它确实可以工作,但是我希望它自己运行。我尝试在每个循环中加载屏幕,但是没有用。
func moveBall() {
while loopnumb <= 100 {
loopnumb += 1
print("animation loop cycled \(loopnumb) times")
print("inside of moveball() before startanimation, scratchX is \(scratchX), scratchY is \(scratchY), and the direction is \(direction).")
let animator = UIViewPropertyAnimator(duration: 0.5, curve: .linear) {
self.direckEffeck()
self.scratch.frame = CGRect(x: self.scratchX, y: self.scratchY, width: 240, height: 128)
print("after and inside of animation command, scratchX is \(self.scratchX), scratchY is \(self.scratchY), and the direction is \(self.direction).")
}
animator.startAnimation()
if checkForOOBX() == true && checkForOOBY() == false {
direckCheckX()
}
if checkForOOBY() == true && checkForOOBX() == false {
direckCheckY()
}
if checkForOOBX() == true && checkForOOBY() == true {
if direction == 0 && done == false {
direction = 2
done = true
}
if direction == 1 && done == false {
direction = 3
done = true
}
if direction == 2 && done == false {
direction = 0
done = true
}
if direction == 3 && done == false {
direction = 1
done = true
}
cornerTouches += 1
print("ebic win, gamer's! the amount of corner touches is \(cornerTouches)")
}
done = false
DispatchQueue.main.async() {
self.scratch.setNeedsDisplay()
}
}
loopnumb = 0
}
请注意,我要移动的对象称为“ scratch”,其坐标为scratchX,scratchY。预先谢谢你。