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Question by yetatore · Aug 17, 2013 at 09:33 PM · collisionmessages

Detect collisions without messages?

Hello. Anyone have a method to detect collisions without using messages functions?

In other words, do something like:

 void Update()
 {
     this.Move(movement);
 
     if (rigidbody.enterCollision)
         this.Move(-movement);    
 }

Instead:

 void Update()
 {
     Move(movement);
 }
 
 void OnCollisionEnter(Collision collision)
 {
     Move(-movement);
 }

I know that Update has more calls per second that the physics engine, but, maybe exist a elegant solution for implement the first code. Cheers!

PD: Im testing this with a Pong remake, thus, CharacterController dont work for me because his collider isnt a box.

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avatar image YoungDeveloper · Aug 17, 2013 at 10:33 PM 0
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Collision data can be gained ONLY from special functions.

avatar image yetatore · Aug 17, 2013 at 10:48 PM 0
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Not always... Example, I can use raycasting without using messages... Although in that case, I wouldnt use a rigidbody...

avatar image DaveA · Aug 17, 2013 at 10:57 PM 0
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You could write your own collision detection, what's the point? Are you trying to make some super-optimized Pong game?

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Answer by DaveA · Aug 17, 2013 at 10:58 PM

You don't need a character controller, just a rigid body. Collider can be any shape. I don't see any good reason to remake the collision system except as an academic exercise.

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avatar image yetatore · Aug 17, 2013 at 11:33 PM 0
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I have to! With a rigidbody+collider, when I move using transform.position, obviously not collide! Only sends the message OnCollisionEnter... The problem is how with this method can I "crash" with a wall??

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