ios - Spritekit 动画没有改变
<p><p>我的游戏中有一个虚拟控制板。如果我点击并按住其中一个方向按钮，播放器会朝正确的方向移动并显示正确的图像和动画。但是，如果我将手指从一个控件滑到另一个控件(比如从右到下)，播放器会向下移动，但图像和动画在我抬起手指之前不会改变。下面是我处理触摸的代码:</p>
<pre><code>override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in (touches as! Set<UITouch>) {
let location = touch.location(in: cameraNode)
if upRect.contains(location) {
moveXDirection = 0
moveYDirection = 1
isIdle = false
playerSprite.walkUpPlayer()
} else if rightRect.contains(location) {
moveXDirection = 1
moveYDirection = 0
isIdle = false
playerSprite.walkLRPlayer()
} else if downRect.contains(location) {
moveXDirection = 0
moveYDirection = -1
isIdle = false
playerSprite.walkDownPlayer()
} else if leftRect.contains(location) {
moveXDirection = -1
moveYDirection = 0
isIdle = false
playerSprite.walkLRPlayer()
}
if !isIdle && moveXDirection != 0 {
playerSprite.xScale = moveXDirection
}
}
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in (touches as! Set<UITouch>) {
let location = touch.location(in: cameraNode)
if upRect.contains(location) {
moveXDirection = 0
moveYDirection = 1
isIdle = false
} else if rightRect.contains(location) {
moveXDirection = 1
moveYDirection = 0
isIdle = false
} else if downRect.contains(location) {
moveXDirection = 0
moveYDirection = -1
isIdle = false
} else if leftRect.contains(location) {
moveXDirection = -1
moveYDirection = 0
isIdle = false
}
if !isIdle && moveXDirection != 0 {
playerSprite.xScale = moveXDirection
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
idlePlayer()
}
</code></pre>
<p>我更改播放器动画的代码是:</p>
<pre><code>func idlePlayer() {
removeAllActions()
}
func walkLRPlayer() {
removeAllActions()
run(SKAction.repeatForever(walkLRAnimation!))
}
func walkUpPlayer() {
removeAllActions()
run(SKAction.repeatForever(walkUpAnimation!))
}
func walkDownPlayer() {
removeAllActions()
run(SKAction.repeatForever(walkDownAnimation!))
}
</code></pre>
<p>任何建议将不胜感激。</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>您的播放器从 <code>touchesBegan</code> 中的方向开始并在 <code>touchesEnded</code> 中停止。问题是您没有处理 <code>touchesMoves</code> 上的方向变化。</p>
<p>让我们创建一个全局变量，它会告诉我们是否改变了方向。</p>
<pre><code>var previous_direction : Int = -1 // idle state
</code></pre>
<p>在触摸功能上，添加 <code>previous_direction</code> 行为。</p>
<pre><code>override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in (touches as! Set<UITouch>) {
// we start with previous_direction being the start direction
if upRect.contains(location) {
previous_direction = 0// up
} else if rightRect.contains(location) {
previous_direction = 1// right
} else if downRect.contains(location) {
previous_direction = 2// down
} else if leftRect.contains(location) {
previous_direction = 3// left
}
}
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in (touches as! Set<UITouch>) {
// we create a current_direction also
var current_direction : Int = -1
// get current_direction
if upRect.contains(location) {
current_direction = 0 // up
} else if rightRect.contains(location) {
current_direction = 1 // right
} else if downRect.contains(location) {
current_direction = 2 // down
} else if leftRect.contains(location) {
current_direction = 0 // left
}
// now we compare if the current_direction is different from previous_direction
if current_direction != previous_direction
{
player.removeAllActions()
// attribute new direction
if current_direction == 0 {
playerSprite.walkUpPlayer()
} else if current_direction == 1 {
walkLRPlayer.walkLRPlayer()
} else if current_direction == 2 {
walkLRPlayer.walkDownPlayer()
} else if current_direction == 3 {
walkLRPlayer.walkLRPlayer() }
// we prepare previous_direction for the next time he enters this function
previous_direction = current_direction
}
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
// reset previous_direction
previous_direction = - 1 // idle state
}
</code></pre></p>
<p style="font-size: 20px;">关于ios - Spritekit 动画没有改变，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/54227703/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/54227703/
</a>
</p>
页:
[1]