Pixel Perfect Collision

I am assuming this is 2D. If they are truely stick figures, why not just use line collisions for each piece of the body? If you use bullets, it could be a simple ray/line collision (ad ray/circle collision for the head). Seems to be the easiest way and it should be too computationally expenise. Just do a box test for the whole stick figure before looping through all the lines. An added benefit is you know exactly which part the bullet (or whatever) hit and you can add some nice blood effects...

Well, the pictures I am using are not true stick figures, I have added some things to them so it would be much harder to use this way. This is why I need the perfect collision.

So what do they look like now? Can you define lines to outline whatever you added to the stickfigures, and then do line intersection tests?

That would actually work for me, but I have no idea how to do that. I could figure out how to do line intersection, but how could I draw lines around my stick figure? How would the program know where to draw the lines?

well in your bitmaps for the figures draw a box around the figure in a color that wont be drawn on screen when you blit. then to test collision you get the coordinates of the box and compare to the other bounding box that may have collided with it. if they touch or overlap then a collison has occured.

I cannot use that because there is a lot of white space in the box, so a rectangular collision will not work.

i was reading through the collision detection articles on this site, and came across this. Sounds like it might be of use to you.

that article is interesting indeed but I was unable to find any implementation exaples and have no idea where to start and how to code such technique.

since i'm intrested in pixel perfect collision as well can someone please point some pleace or give an exaple how to do it? my best guess is that i need to use BitBlt function with some compare argument.