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Question by sam32x · Jan 20, 2012 at 12:50 AM · collisionsomething

colliders not colliding right

i have a small spaceship with a box collider on it and then a massive spaceship thats about 300x bigger with about 8 box colliders because its not very square.

if i fly my small spaceship into the big one it goes through and doesnt collide. i am using transform.Translate to move, do i need to use rigidbody.velocity? also i put in a cube the size of the smaller spaceship and when i flew into it nothing happened

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avatar image sam32x · Jan 20, 2012 at 12:57 AM 0
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this is the script im using to move

 var forwards : float = 0;
 var turn  : float = 0;
 var updown : float = 0;
 var maxspeed = 16;
 var $$anonymous$$speed = -8;
 var maxturn = 270;
 var $$anonymous$$turn = -270;
 var maxupdown = 90;
 var $$anonymous$$updown = -90;
 
 function Update () {
 transform.Translate(Vector3.forward * Time.deltaTime * forwards);
 transform.Rotate(Vector3.forward * Time.deltaTime * turn);
 transform.Rotate(Vector3.right * Time.deltaTime * updown);
 
 if(Input.Get$$anonymous$$ey("w"))
 forwards += 0.2;
 
 if(Input.Get$$anonymous$$ey("s"))
 forwards -= 0.2;
 
 if(Input.Get$$anonymous$$ey("right"))
 turn -= 5;
 
 if(Input.Get$$anonymous$$ey("left"))
 turn += 5;
 
 if(Input.Get$$anonymous$$ey("up"))
 updown += 5;
 
 if(Input.Get$$anonymous$$ey("down"))
 updown -= 5;
 
 if(Input.Get$$anonymous$$ey("e")){
 turn /= 1.1;
 updown /= 1.1;
 }
 
 if (forwards >= maxspeed)
 forwards = maxspeed;
 
 if (forwards <= $$anonymous$$speed)
 forwards = $$anonymous$$speed;
 
 if (turn >= maxturn)
 turn = maxturn;
 
 if (turn <= $$anonymous$$turn)
 turn = $$anonymous$$turn;
 
 if (updown >= maxupdown)
 updown = maxupdown;
 
 if (updown <= $$anonymous$$updown)
 updown = $$anonymous$$updown;
 }

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Answer by syclamoth · Jan 20, 2012 at 01:13 AM

Transform.Translate doesn't actually use physics. You need both a rigidbody and a collider to use inbuilt collision detection, and the rigidbody must use actual physics rather than be kinematic. If you are setting the velocity every frame, you will experience unusual, non-physical behaviour.

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avatar image sam32x · Jan 20, 2012 at 02:21 AM 0
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thanks i put rigidbodies on both and it works now

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