代码重构问题

Question

我已经准备好游戏，现在我正在尝试重构代码。我从 CCNode 派生了 Spider 类，并使用了目标委托方法 CCTargetedTouchDelegate。

@interface Spider : CCNode<CCTargetedTouchDelegate> {
    CCSprite* spiderSprite;
    NSString * spiderKilled;
    int killed;
    AppDelegate *del;
}

+(id) spiderWithParentNode:(CCNode*)parentNode;
-(id) initWithParentNode:(CCNode*)parentNode;

@end

On Touch 蜘蛛应该被杀死，代码如下：

-(BOOL) ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{
    CGPoint tch = [touch locationInView: [touch view]];
    CGPoint touchLocation = [[CCDirector sharedDirector] convertToGL:tch];

    // Check if this touch is on the Spider's sprite.
    BOOL isTouchHandled = CGRectContainsPoint([spiderSprite boundingBox], touchLocation);

    if (isTouchHandled)
    {
        j = j + 1;
        killed ++;
        [del setKilledScore:j];
        [self removeChild:spiderSprite cleanup:YES];
    }

    return isTouchHandled;
}

我在 GameScene 层中添加 10 个蜘蛛，使用：-

 for(int i=0; i <10 ;i++){
      [Spider spiderWithParentNode:self];
    }

但是，不幸的是，我无法删除蜘蛛并在此行出现 EXC_BAD_ACCESS 错误：[self removeChild:spiderSprite cleanup:YES];

请帮我克服这个错误。

谢谢

---

更新—— 蜘蛛初始化代码 // 静态自动释放初始化器，模仿 cocos2d 的内存分配方案。 +(id) spiderWithParentNode:(CCNode*)parentNode { return [[[self alloc] initWithParentNode:parentNode] autorelease]; }

-(id) initWithParentNode:(CCNode*)parentNode
{
    if ((self = [super init]))
    {
        [parentNode addChild:self];
        del = [[UIApplication sharedApplication] delegate];
        CGSize screenSize = [[CCDirector sharedDirector] winSize];

        spiderSprite = [CCSprite spriteWithFile:@"spider.png"];
        spiderSprite.position = CGPointMake(CCRANDOM_0_1() * screenSize.width, CCRANDOM_0_1() * screenSize.height);
        [self addChild:spiderSprite];

        // Manually add this class as receiver of targeted touch events.
        [[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:-1 swallowsTouches:YES];
    }

    return self;
}

Answer 1

如果您手动将该类添加到 CCTouchDispatcher 列表中，则应在使用完毕后将其从该列表中移除。