Fire at Mouse Position, 2d game.

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Hi guys!

I'm trying to do a aim system where the bullet will be shot in direction of the mouse position...

I've tried to use Input.mousePosition, but after some researchs , I found that t$$anonymous$$s is relative to pixels not to my transform.position.

I've seen too the Camera.main.ScreenToWorldPoint solution, but that does'nt work how I expected.In my game I instantiate the bullet at the transform.position facing the corresponding side, and after that I apply a vector as the velocity of the bullet.

Does t$$anonymous$$s way of firing right or am I'm going in the wrong direction?

Thank you!

Answer 1

Best Answer

Answer by robertbu · Dec 07, 2013 at 07:05 AM

Here is a simple spawner script that, on a mouse click, shoots the 'prefab' at the mouse position. I had gravity scale set to 0 on the prefab.

 #pragma strict
 
 var prefab : GameObject;
 
 function Update () {
     if (Input.GetMouseButtonDown(0)) {
         var pos = Input.mousePosition;
         pos.z = transform.position.z - Camera.main.transform.position.z;
         pos = Camera.main.ScreenToWorldPoint(pos);
         
         var q = Quaternion.FromToRotation(Vector3.up, pos - transform.position);
         var go = Instantiate(prefab, transform.position, q);
         go.rigidbody2D.AddForce(go.transform.up * 500.0);
     }
 }

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xVarelax · Dec 07, 2013 at 07:35 PM 0

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Answer 2

Answer by coreysnyder · Jul 09, 2014 at 09:55 PM

I'm pretty new to t$$anonymous$$s stuff but I t$$anonymous$$nk you want to use the "Normalize" method seen here. What it does it keep the direction the same but sets the magnitude to 1. Then you can take that direction * Missile speed and that will pretty much guarantee that your missile files the same speed in the correct direction no matter the pre-normalized distance

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xVarelax · Aug 15, 2014 at 04:31 AM 0

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Fire at Mouse Position, 2d game.

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