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  Collision Detection  (Read 599 times)
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Offline DDDBOMBER

Junior Member


Projects: 1



« Posted 2013-03-02 15:56:36 »

In my game, entities are rectangles, but are able to rotate, I need a way to tell collision between them taking into account the rotation. I have a double x and y and a double rotation
Offline opiop65

JGO Kernel


Medals: 153
Projects: 7
Exp: 3 years


JumpButton Studios


« Reply #1 - Posted 2013-03-02 16:03:34 »

This was answered not long ago. You need to calculate the angles using sine and cosine, and then complete your collision detection based on the angles.

Offline cubemaster21
« Reply #2 - Posted 2013-03-02 16:38:44 »

What you're looking for is OBB (Oriented Bounding Box) Collisions. For collisions, I personally use a custom CollisionBox class that has 4 Vector2D's as the vertices. When I rotate the box around it's center, I rotate each point around that center point. If I were you, I would look into separated axis theorem.

Check out my game, Viking Supermarket Smash
http://www.java-gaming.org/topics/iconified/28984/view.html
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