1	Collisions Andreas Klinko Vinh Giang Haris Bilal
2	Why is it useful? Collisions between objects can be used to: trigger action sequences respond to the gamer show an animation/explosion
3	References from DBPro Pages 76-77, 84-85, 87-88, 98-99 User help Forums- DBPro and Code Snippets
4	Commands – settings Set Collision On\|Off object_no Set Object Collision To Boxes\| Spheres \| Polygons Set Global Collision On\|Off Set Object Radius object_no, radius# Automatic Object Collision object_no, radius, response Automatic Camera Collision camera_no, radius, response
5	Commands cont’d Make Object Collision Box object_no,x1,y1,z1,x2,y2,z2,collision flag Delete Object Collision Box float = object collision x\|y\|z()
6	Collision Expressions Used to detect object hit/collisions Able to obtain coordinates via function calls
7	Collision Expr. cont’d int = object hit(obj_1, obj_2) int = object collision(obj_1, obj_2) float = object collision radius(obj) float = object collision center x\|y\|z(obj)
8	Intersect Object float = intersect object(obj, x, y, z, tox, toy, toz) Useful for determining distances between a fast moving object and another object
9	Static Collisions Make Static Collision Box x1,y1,z1,x2,y2,z2 int = Get Static Collision Hit (OX1, OY1, OZ1, OX2, OY2, OZ2, NX1, NY1, NZ1, NX2, NY2,NZ2) float = Get Static Collision x\|y\|z () int = static line of sight(x1,y1,z1,x2,y2,z2, width, accuracy) float = static line of sight x\|y\|z ()
10	Notes Make sure objects are centered at the origin when exported from 3DCanvas DarkBASIC is somewhat inconsistent when it comes to manage collisions, so test thoroughly Use the Intersect Object command if you have a fast-moving projectile, otherwise the projectile might go through the target object. Also, Intersect Object is useful for making your own collision detection algorithms