我正在按照 Ray 的教程制作一个简单的 iPhone 游戏（此处：http://goo.gl/fwPi），并决定我希望敌人在被触碰时被消灭。
我最初的方法是在触摸位置生成一个小的 CCSprite 精灵，然后使用 CGRectMake 创建所述精灵的边界框以检测敌人精灵是否被触摸。就像雷对射弹/敌人所做的那样。但当然，我的方法行不通，我无法把自己从这个洞里挖出来。
这是相关的代码片段。任何帮助表示赞赏：
- (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
// Choose one of the touches to work with
UITouch *touch = [touches anyObject];
CGPoint location = [self convertTouchToNodeSpace: touch];
location = [[CCDirector sharedDirector] convertToGL:location];
CCSprite *touchedarea = [CCSprite spriteWithFile:@"Icon-72.png" rect:CGRectMake(location.x, location.y, 2, 2)];
touchedarea.tag = 2;
[self addChild:touchedarea];
[_touchedareas addObject:touchedarea];
}
- (void)update:(ccTime)dt {
NSMutableArray *touchedareasToDelete = [[NSMutableArray alloc] init];
for (CCSprite *touchedarea in _touchedareas) {
CGRect touchedareaRect = CGRectMake(
touchedarea.position.x,
touchedarea.position.y,
touchedarea.contentSize.width,
touchedarea.contentSize.height);
NSMutableArray *targetsToDelete = [[NSMutableArray alloc] init];
for (CCSprite *target in _targets) {
CGRect targetRect = CGRectMake(
target.position.x - (target.contentSize.width/2),
target.position.y - (target.contentSize.height/2),
target.contentSize.width,
target.contentSize.height);
if (CGRectIntersectsRect(touchedareaRect, targetRect)) {
[targetsToDelete addObject:target];
}
}
for (CCSprite *target in targetsToDelete) {
[_targets removeObject:target];
[self removeChild:target cleanup:YES];
}
if (targetsToDelete.count > 0) {
[touchedareasToDelete addObject:touchedarea];
}
[targetsToDelete release];
}
for (CCSprite *touchedarea in touchedareasToDelete) {
[_touchedareas removeObject:touchedarea];
[self removeChild:touchedarea cleanup:YES];
}
[touchedareasToDelete release];
}
这看起来是一种非常困难的方法。我自己编码时间不长，但也许以下内容可能对您有所帮助。
假设你有一个名为敌人的 nsmutable 数组，并且在创建敌人时将新的敌人对象添加到该数组中。敌人对象将是一个 ccnode，并且其中有一个名为 _enemySprite 的 ccsprite
然后进行触摸
-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSSet *allTouches = [event allTouches];
UITouch * touch = [[allTouches allObjects] objectAtIndex:0];
//UITouch* touch = [touches anyObject];
CGPoint location = [touch locationInView: [touch view]];
location = [[CCDirector sharedDirector] convertToGL:location];
int arraysize = [enemies count];
for (int i = 0; i < arraysize; i++) {
if (CGRectContainsPoint( [[[enemies objectAtIndex:i] _enemySprite] boundingBox], location)) {
//some code to destroy ur enemy here
}
}
// NSLog(@"TOUCH DOWN");
}
希望这可以帮助
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