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In Cocos2D collision detection, how do I check for collisions against a randoman arbitrary user-drawn shape?

I would like to brainstorm a few ways of handling howwant to detect a collision between a sprite and a user generated-generated shape of some sort.

For example. There are 3 objects on the screen. The user takes their finger and draws an abnormal shape around 2 of the objects. I need to detect those 2 objects.

alt text http://desmond.yfrog.com/Himg339/scaled.php?tn=0&server=339&filename=f2i.png&xsize=640&ysize=640 user shape in purple, game objects in green and red

Anyone have any good ideas on how toHow do I approach this efficiently using Cocos2D?

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asked Jul 14, 2010 at 21:20

David McGraw

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Cocos2D collision detection against a random shape

I would like to brainstorm a few ways of handling how to detect a collision between a sprite and a user generated shape of some sort.

For example. There are 3 objects on the screen. The user takes their finger and draws an abnormal shape around 2 of the objects. I need to detect those 2 objects.

alt text http://desmond.yfrog.com/Himg339/scaled.php?tn=0&server=339&filename=f2i.png&xsize=640&ysize=640

Anyone have any good ideas on how to approach this efficiently using Cocos2D?

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In Cocos2D collision detection, how do I check for collisions against a randoman arbitrary user-drawn shape?

Cocos2D collision detection against a random shape

In Cocos2D, how do I check for collisions against an arbitrary user-drawn shape?

Cocos2D collision detection against a random shape