How do I add force in the on trigger

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Hi, I have this simple problem, I have an object and a group of objects (prefab) named coin. All I have to do is addforce to the coins when they enter the main object.
The collision/trigger thingy works, when I change the
“coin.rigidbody.AddRelativeForce (0, power, 0);” line, it works so the problem is with that line.

var coin : GameObject;
static var speed : int;
var power;



function Start () {
InvokeRepeating("checking", 0, 0.3);
}

function OnTriggerEnter ( collision : Collider){

 
 coin.rigidbody.AddRelativeForce (0, power, 0);

}

function checking (){
power = speed/3;


}

(the var power is set in other script

are the coins who enter the trigger? then you could use function OnTriggerEnter ( collision : Collider){ collision .rigidbody.AddRelativeForce (0, power, 0); } And are you sure you are giving a value to power before you use it? Do you see errors in the console?

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are you instantiating objects, because if you are it will name it Coin(clone) and not coin so you will have to make a script to rename it on start.

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1 Answer

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2

The problem is you want to add an instantaneous force, where AddForce is applied over time in physics. For an instantaneous force in your case of entering a trigger volume, you need to use ForceMode.Impulse :

rigidbody.AddForce( transform.up * power, ForceMode.Impulse );

Links :

there is just one slight error, it moves the main object instead of the coins :D. How do I swap them?

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use coin.rigidbody.AddForce( transform.up * power, ForceMode.Impulse );

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okay, it is working when I set the coin var to a certain object already in game. Problem is, The coins are spawed randomly with a script, so when they are spawned, they dont react with the main object. I forgot to mention that, sry. And another thing is that Iam planning on adding more stuff doing pretty much the same as coins so, I would need the script to activate on trigger with ANY object. Not just coins. Thank you, btw.

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Read the documentation on gameObject.tags. All of your issues you have described above will be solved when you learn that.

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thank you, looks like I've got it. (just added "collision" to that line instead of "coin")

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