Sorry, but saying something like "now I want to check collision, but things is making very hard!!!" won''t get you many responses because there is really no specific question.

Collision detection is a large topic and can be accomplished in a variety of ways. Do a search through the forum archives and you''ll see dozens of threads that deal with the issue.

As a basic overview, in real-time applications collision detection is generally done by computing some kind of bounding volume around your objects. For example, you could create a box that completely surronds a character in your game. If you create bounding volumes (a box in this case) around all of the objects in your world, then collision detection becomes a problem of detecting when two boxes have collided.

There are many optimizations to this but the basic idea is to avoid checking for the intersection of specific triangles in models and instead use some kind of bounding volume around your models (or even parts of your models to get more accurate collisions) and use them to check for collisions.

Please do a search in the forum archives and using Google to find out more info. If you have specific questions, post them here on the board and we''ll try to help.

neneboricua