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box2dcocos2d-x

How to get Tag and check the object in update?

I want to delete the sprite or b2body. After that i am going to check if the object is available or not.

I have the following coding:

I have removed the object using the tag:

 this->removeChildByTag(100,true)      //this is not in update function

In update function:

 if(node->getTag()==100)
 {
      CCLog("node is available");
 }

Here i got issue "EXC_BAD_ACCESS (code=2, address=0x84)" in node->getTag() line.

Is there any wrong on this code?

Is any alternate way to handle to check the node or object?

Thanks in advance.

Solution

  • My guess is that previously, you called something like:

    addChild(node);

    This added the node to the container (your CCScene derived class). When you called 

    this->removeChildByTag(100,true);

    the "node" instance was destroyed.

    A better check would be something like:

    CCSprite* pNode = (CCSprite*)getChildByTag(100);
if(pNode == NULL)
{   // This node is available
    // Do something here...
}