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Question by Elior1989 · Dec 30, 2014 at 11:12 AM · collisioncollidercollision detectionshapes

Cubes collide with terrain

Actually I have 2 question that relates to the same subject: I'm trying to stop the movement of the cubes when they're collide with the terrain.

  1. I did some custom shapes in blender and imported the files to unity, the shape are falling from the "sky" and need to stop when they hit the terrain, I added via script (C#) a rigidbody and checked the convex of each shape resource, butthey are falling through the terrain..

  2. I tried to check if it happens too with primitive shapes from unity, I set a primitive cube in my scene, added a rigidbody and checked the use gravity, the cube has a box collider and it's trigger checked also. The terrain has terrain collider and it checked.but when i start the scene the cube is falling and go through the terrain.. what is the problem?

Any Ideas? tutorials on how to create shape colliders with terrains?

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Answer by Mmmpies · Dec 30, 2014 at 11:17 AM

Trigger turns a collider into a a trigger, it no longer collides it just notices that something has breached it's borders. Switch isTrigger off and try it again.

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avatar image Elior1989 · Jan 03, 2015 at 09:26 AM 0
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Hi thanks for your answer, so how it can be done? I also tried when to write some code when the onColliderEnter occurs but nothing helps..

avatar image tanoshimi · Jan 03, 2015 at 09:28 AM 0
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It's OnCollisionEnter for colliders, OnTriggerEnter for triggers.

avatar image Mmmpies · Jan 03, 2015 at 07:34 PM 0
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Note that Unity is case sensitive so onCollisionEnter is not the same as OnCollisionEnter.

You need to use OnCollisionEnter

Oh and let us know if it is fixed.

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