ios - 碰撞检测只发生在屏幕顶部
<p><p>我将制作一个非常简单的游戏，例如从顶部掉下的 Sprite ，我必须用另一个 Sprite 捕获它，如果我不这样做， Sprite 会走出屏幕并移除，那部分没问题，我还添加了碰撞检测，主要问题是这种碰撞只发生在屏幕的上部而不是屏幕的底部，为什么会发生这种情况请帮忙，(我是新人:S)，这是完整代码</p>
<p>在我的 .h`然后 .m</p>
<pre><code>{
CCSprite *right;
CCSprite *left;
NSMutableArray *_left;
}
-(void)ringcreate:(ccTime)dt
{
CGSize winsize = [ winSize];
int minX = left.contentSize.width / 2;
int maxX = winsize.width - left.contentSize.width/2;
int rangeX = maxX - minX;
int actualX = (arc4random() % rangeX) + minX;
left = ;
left.position = ccp(actualX,winsize.height);
;
id move3 = ;
;
}
-(id) init
{
// always call "super" init
// Apple recommends to re-assign "self" with the "super's" return value
if( (self=) ) {
self.touchEnabled = YES;
right = ;
right.position = ccp(0,0);
;
;
;
}
return self;
}
-(void) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch =;
CGPoint location =];
location = [ convertToGL:location];
id move = ;
;
}
-(void) update:(ccTime)dt
{
if (CGRectIntersectsRect(right.boundingBox, left.boundingBox)) {
CCLOG(@"collison hoyse");
id move1 = ;
left.visible = NO;
;
}
}
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我解决了这个问题，我只需要添加数组并使用该方法更新它们，</p>
<pre><code>-(void) update:(ccTime)dt
{
NSMutableArray *crabToUpdate = [ init];
for (CCSprite *crab in crabarray) {
NSMutableArray *ring_to_delete = [ init];
for (ring1 in ringarray) {
if (CGRectIntersectsRect(crab.boundingBox, ring1.boundingBox)) {
;
}
}
for (CCSprite *ring1 in ring_to_delete) {
;
;
}
if (ring_to_delete.count >0) {
;
}
;
}
}
</code></pre></p>
<p style="font-size: 20px;">关于ios - 碰撞检测只发生在屏幕顶部，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/15609689/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/15609689/
</a>
</p>
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