Problem with bounce on collision

Hi there,
I am learning how to stuffs work in unity and I actually need some help over here.
I m writing a simple space shooter game and i want a player (the starship obviously) bounce from the edge of the screen when he reach it.
I got 2 collidors, one on each side with script attached:

Code (CSharp):

1.     public float bounceForce = 5f;
2.  
3.  
4.     void OnTriggerEnter2D(Collider2D col){
5.  
6.         name = col.gameObject.name;
7.  
8.         if (name == "player"){
9.             Debug.Log ("u re in me");
10.             GetComponent<Rigidbody2D> ().AddForce (new Vector2(-transform.position.x*bounceForce,0));
11.             //col.attachedRigidbody.AddForce (transform.right * speed);
12.             //GetComponent<Rigidbody2D> ().AddForce (transform.right * bounceForce);
13.             //transform.Translate (Vector2.right * bounceForce);
14.         }
15.    
16.     }

I want add the counter force multplied by bunceForce in the direction from which the starship came.
As you can see I tried may ways to achive that.
Also I made it working once but since forced was added the spaceship kept moving right and wouldnt stop.
Can you explain me how to make this bounce done?

 

The reason why it kept moving right and wouldn't stop is either because you need to give your Rigidbody some drag, or you need to use ForceMode2D.Impulse as the second parameter in AddForce.

Code (CSharp):

1. GetComponent<Rigidbody2D> ().AddForce (new Vector2(-transform.position.x*bounceForce,0), ForceMode2D.Impulse);

 

Well it doesnt work, actually the collider detects that i am hitting it but nothing more happens.
I ve also done some research and tried this:

Code (CSharp):

1. col.gameObject.GetComponent<Rigidbody2D> ().AddForce (new Vector2(-transform.position.x*bounceForce,0), ForceMode2D.Impulse);

And still nothing.
On my player the "is kinematic" is checked, also same on my collideros + they got "is trigger" checked too.
Without those options it even wont detect the collision.

 

"isKinematic" means that the Rigidbody will not respond to forces, including collisions. You probably want to uncheck that.

 

I ve uncheckd the "iskinematic" in both, the player and both side collidors so the spaceship is reciving force from them on hit but the force remaining utill the ship hits the opposite side collider which is weird and its not happening all the time, sometime spaceship bounces off the map lol.
Also I have to got checked iskinematic on my spaceship coz when I shoot bullets the starship is recieving counter force somehow and its going in weird directions.
I am getting really disappointed coz i see no clue in figuring this stuff out.

 

It sounds like you have other issues with how you set up your physics objects.

The "counter force" is maybe due to the bullets colliding with the ship when you spawn them. You can prevent your ship from colliding with the bullets by using Physics2D.IgnoreCollision when you spawn a bullet.

You may need to give your ship's rigidbody a higher Drag value.

 

Thanks, I ll try to figure this out

 

This collider must be triger

 

Now I'm not sure this will help but I have an idea, you could calculate the distance to the edge of the screen if it lets say 0.1F from it bonce it the other way not sure how you simulate bouncing.

Although you could setup a couple of edge colliders(left and right screen) and when it touch one of the it should bounce off still a material might help, I might be totally wrong what your trying to do with this. maybe a little image might clear it up more.

 

set Collision detection to Continuous