如何在冲突回调延迟后移除形状和身体(cocos2d-chipmunk)

Question

有没有人可以帮我在碰撞回调延迟后移除形状和体形？

通过使用cpSpaceAddPostStepCallback(cpPostStepFunc，(PostStepRemove)postStepRemove，blockShape，NULL)；我可以安全地删除形状。但是在我调用这个函数之前，我需要一些延迟。一旦检测到碰撞，我就会播放动画。在代码的末尾，我需要删除形状。有没有人可以帮我写一些示例代码。我写的代码如下所示。

int collisionSapusBlock(cpArbiter *arb, struct cpSpace *sapce, void *data)
{

cpShape *sapusShape, *blockShape;
cpArbiterGetShapes(arb, &sapusShape, &blockShape);

cpBody *BlockBody = blockShape->body;
cpBody *sapusBody = sapusShape->body;

CCNode *parent = (CCNode*)data;

if (cpvlength(sapusBody->v) > 45)
{
NSLog(@"Collision2 called %f",cpvlength(sapusBody->v));
CCSprite *sprite = blockShape->data;
[parent removeChild:sprite cleanup:YES];

///////
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"Block2.plist"];
CCSpriteBatchNode *sheet1 = [CCSpriteBatchNode batchNodeWithFile:@"Block2.png" capacity:2];
[parent addChild:sheet1];

CCSpriteFrameCache *cache = [CCSpriteFrameCache sharedSpriteFrameCache];
CCSprite *sapusSprite1 = [[CCSprite alloc] initWithSpriteFrameName:@"Block2001.png"];
CCAnimation *sapusAnim = [[CCAnimation alloc] initWithName:@"select" delay:0.15f];
[sapusAnim addFrame:[cache spriteFrameByName:@"Block2001.png"]];
[sapusAnim addFrame:[cache spriteFrameByName:@"Block2002.png"]];
[sapusAnim addFrame:[cache spriteFrameByName:@"Block2003.png"]];
[sapusAnim addFrame:[cache spriteFrameByName:@"Block2004.png"]];
[sapusAnim addFrame:[cache spriteFrameByName:@"Block2005.png"]];
[sapusAnim addFrame:[cache spriteFrameByName:@"Block2006.png"]];
[sapusSprite1 addAnimation: sapusAnim];
[sheet1 addChild:sapusSprite1];

CCAnimate *animate = [CCAnimate actionWithAnimation: sapusAnim restoreOriginalFrame:NO];
[sapusSprite1 runAction:animate];

blockShape->data = sapusSprite1;

/////here after playing the animation i need to delete the blockShape. Help plzzz
}

return 1;
}

有没有人可以帮我写一些示例代码。谢谢

Answer 1

我还没有试过这个，但它应该可以工作。在碰撞处理程序中，将动画作为序列的一部分踢开，然后将postStepCallback作为序列中的最后一项执行：

CCSequence *finalSeq = [CCSequence actions:[CCAnimate actionWithAnimation:sapusAnim restoreOriginalFrame:NO],
     [CCCallFunc actionWithTarget:self selector:@selector(removeCpShapeAndBody)], nil];
[sapusSprite1 runAction:finalSeq];

然后创建一个名为removeCPShapeAndBody的方法，该方法将调用cpSpaceAddPostStepCallback。