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Question by Matt 5 · Mar 29, 2012 at 06:50 PM · movementspawn

Spawning on Trigger

Hey Everyone

What I need is help to spawn a gameobject once a trigger is hit and I want to spawn in a forward motion.

Here the code that I attached to an empty game object.

var batPrefab:Transform; // Insert bat prefab
var batAmount:int = 20; // Number of bats to be spawned instantly
function OnTriggerEnter (Bats : Collider) {

for(i=0;i

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avatar image Melissa_Goddard · Mar 29, 2012 at 07:21 PM 0
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Doesn't look like it posted my answer to your question.

I maybe wrong but I don't think you are saying where you want to instantiate it yet.

I think you want something along the lines of:

var obj = Instantiate(batPrefab,startingPosition.position, Quaternion.identity); obj.rigidbody.addForce(forward*speedToGoForward);

hope that helps

$$anonymous$$ind Regards

$$anonymous$$elissa

avatar image Matt 5 · Mar 29, 2012 at 07:35 PM 0
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Thanks but I'm getting this error with that Field'System.Int32.position' not found.

and here is the code with your revision.

var batPrefab:Transform; // Insert bat prefab var batAmount:int = 20; // Number of bats to be spawned instantly var startingPositionY : int = 25; var speedToGoForward : int = 10; var forward: int = 10 ;

function OnTriggerEnter (Bats : Collider) { Debug.Log("hitTrigger"); for(i=0;i

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Answer by daivuk · Mar 29, 2012 at 07:33 PM

Have you tried OnTriggerStay(Bats:Collider) This one will be called every frame. If you want it to be called only once, you could add a bool or something.

ref: http://unity3d.com/support/documentation/ScriptReference/MonoBehaviour.OnTriggerStay.html

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Answer by daivuk · Mar 29, 2012 at 07:33 PM

I am not sure what your question is? That code to me look like it should work. But i would personally use GameObject for the batPrefab instead of a Transform.

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avatar image Matt 5 · Mar 29, 2012 at 07:38 PM 0
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I want the bats to move in a forward motion right now when I hit the trigger they are scattrered

avatar image daivuk · Mar 29, 2012 at 08:46 PM 0
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I think that should be the bat script to handle this in his Start() function. Apply an initial velocity to them, or update them forward every frame in their Update()

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Answer by Melissa_Goddard · Mar 29, 2012 at 07:33 PM

I may be wrong, but you aren't telling it where to instantiate...

would it not be:

var obj = Instantiate(batPrefab, startingPosition,Quaternion.identity); obj.rigidbody.addForce(forward*speedToGoForward);

//Where starting position is the position of the trigger and speedToGoForward is how fast the initial value is when it is instantiated

Hope it helps

Melissa

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