It seems to me that the shape of the triangles make the shape of map, this changes the collsion detection as i assumed a grid of triangles(like a tilemap). You will need polygon collision.
Have a look at: http://gpwiki.org/index.php/Polygon_Collision
And: http://gpwiki.org/index.php/VB:Tutor...sion_Detection
You first want to do a circle circle collision check for visible triangles
If that collides you want to do a triangle triangle check
If delphix has native collision components do use them!
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