set y velocity to zero, when collision trigger

Im making this game. Its a like a platformjump game except i use something like a bubble, so when the player hits one of the bubbles that are spawned, the player gets a addforce and the bubble gets destroyed. My problem is that, when i hit one of the bubbles and get the addforce on the player, the second bubble i hit gives me a way to big velocity beacuse the new force is added to the old force from the first bubble i hit. So i need some help with setting the velocity on the y axis to zero when it hits another bubble so it doesnt get a higher velocity than the addforce is giving it. Or if you guys have other suggestion than setting the velocity to zero i would be much appreciated.

This is the code

Code (csharp):

1.         void OnTriggerEnter2D (Collider2D other)
2.            
3.         {
4.            
5.             if (other.gameObject.tag == "Player")
6.                
7.             {
8.             Destroy(gameObject);
9.             other.rigidbody2D.AddForce(new Vector3(0, 300, 0));
10.  
11.            
12.         }
13.        
14.         }
15.        
16.     }
17.  

 

Anyone?

 

http://docs.unity3d.com/Documentation/ScriptReference/Rigidbody2D-velocity.html

It says "The value is not usually set directly but rather by using forces." but I guess just because it's not usually set directly, in this case maybe you want to set it directly.


The other possibility is you can still use addForce but adjust the magnitude of the force depending on the current velocity.

 

Any chance that you could write a script exampel, i dont know how to put i all up

/RWCD

 

anyone who got any clue on how to do this?

 

Hey RWCD, Simplest option is to set the velocity to 0 then apply force again.
However if you have other factors (i.e. wind affecting the x axis) then this might become messy.

Code (csharp):

1.  
2.         void OnTriggerEnter2D (Collider2D other)
3.         {
4.             if (other.gameObject.tag == "Player")
5.             {
6.                 Destroy(gameObject);
7.                 other.rigidbody2D.velcocity = Vector2.zero;
8.                 other.rigidbody2D.AddForce(new Vector2(0, 300));
9.             }
10.         }
11.  

Or what rrh is saying is to adjust the force added by the velocity the object is moving at already:

Code (csharp):

1.  
2.         void OnTriggerEnter2D (Collider2D other)
3.         {
4.             if (other.gameObject.tag == "Player")
5.             {
6.                 Destroy(gameObject);
7.                 // Might need some adjustments if you have other factors affecting but this is the idea.
8.                 other.rigidbody2D.AddForce(new Vector2(0, 300 - other.rigidBody.velocity.y);
9.             }
10.         }
11.  

 

that works fine. But my problem is the x axis. it doesnt seem to be able to move on the x-axis until the gameObject reached the velocity.
I want to get the force up and be able to go right and left while i get a force that pushing me in the y axis.

 

What's your code for moving the x-axis?