How to make an object without gravity bounce off colliders like it's in space?

Questions & Answers
1

I’m spawning cars with colliders. As soon as the player loses, the trigger on the car’s collider is turned off and it starts colliding with other cars/walls.

My problem is after it reaches the left/right end of the screen where I placed a wall with a collider, it gets stuck. I wanted it to bounce off to a random direction and rotate to make it look like it’s in space.

I have this code on my car object:

void Update()
{
   if (GameManager.SharedInstance.GameOver)
   {
      col.isTrigger = false;
   }
}

void FixedUpdate()
{
   rb.velocity = new Vector2(speed, 0);
   //for cars going to the left, I set it to --> rb.velocity = new Vector2(-speed, 0)
}

I also learned that all physics should be placed on FixedUpdate, any idea on how to do this? Any help would be appreciated! Thank you!

2

Hi,

I would use an OnCollisionEnter() method on the wall / outer boundary, then detect the layer or tag of the object colliding with it. If the layer / tag is “car” then aplly a force to the rigidbody of the colliding object.

For example.

Set the tag of each car object to “Car”.

On the wall / bounary add a script (or add to an existing script) containing something like…

void OnCollisionEnter(Collision col)
{
    if(col.Tag == "Car")
	{
		//Add force to the col rigidbody
	}
}