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Question by Shofol · Apr 15, 2016 at 06:47 AM · rigidbodyinstantiateaddforce

Addforce is not working

alt textI'm instantiating a ball at the start of the scene and I need to come that ball to the screen. But after instantiated it's not moving :( Please help. I'm new to unity.

var thePrefab:GameObject; function Start(){ var ball =Instantiate(thePrefab,transform.position,transform.rotation); ball.GetComponent.().AddForce(transform.forward*1000); }

ball.jpg (12.3 kB)
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Answer by Ali-hatem · Apr 15, 2016 at 10:10 AM

ball should have a Rigidbody attached to it then C# :

 Rigidbody rb;
 void Start(){
 rb = thePrefab.GetComponent<Rigidbody>();
 rb.AddForce(transform.forward*1000);
 }

but i recommend to attach a script to ball that handle movement once it instantiated because in Example 1 you may get error : "object reference not set to instance of an object" & then we have to use GameObject.Find() which loop throw all game objects in the scene to find the ball object so it more efficient & simpler ball script :

 Rigidbody rb;
 void Start(){
 rb = GetComponent<Rigidbody>();
 rb.AddForce(transform.forward*1000);
 }



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avatar image Shofol · Apr 15, 2016 at 01:59 PM 0
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Did this. No luck ! :(

var thePrefab:GameObject; var rb:Rigidbody;

function Start(){ var ball =Instantiate(thePrefab,transform.position,transform.rotation); rb.GetComponent.().AddForce(transform.forward*1000); }

avatar image Ali-hatem Shofol · Apr 15, 2016 at 02:06 PM 0
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 rb =thePrefab.GetComponent<Rigidbody>().AddForce(transform.forward*1000);

edited i thought you used a script for ball movement if not why you don't use

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