Can't shoot towards mouse click point

Question

I'm making 3d space game from side-view, and i wanted to add some weapons that would shoot on x and y axis towards the point where the player click the mouse.I found something so i tried this:

 var hit  : RaycastHit ;
     if(Input .GetButtonDown ("Fire1"))
     {
          var ray : Ray  = Camera .main .ScreenPointToRay (Input .mousePosition );
          if(Physics.Raycast (ray, hit, Mathf.Infinity))
          {
              var shootProjectile : Rigidbody = Instantiate(projectile, GameObject.Find("spawnPoint").transform.position, Quaternion.identity);
              shootProjectile.AddForce (hit.point * projectileSpeed);
          }
 
     } 
 }

It shoots well if i click in to empty space, but when i click on object with collider, it shoots in very weird directions...I spend day and half finding a solution, but I didn't find it. I tried many things, just do'nt work. Can anyone help me? The best would be to post repaired code and explain why my code don't work :)

Answer 1

Best Answer

Answer by Arlei · Aug 19, 2012 at 08:29 AM

Okay, I fixed it!

 var projectile : Rigidbody;
 var projectileSpeed : float;
 var spawnPt : GameObject;
 
 function Start()
 {
    spawnPt = GameObject.Find("spawnPoint");
 }
 
 function Update()
 {
 var hit  : RaycastHit ;
     if(Input .GetButtonDown ("Fire1"))
     {
          var ray : Ray  = Camera .main .ScreenPointToRay (Input .mousePosition );
          if(Physics.Raycast (ray, hit, Mathf.Infinity))
          {
              
              projectile = Instantiate(projectile, GameObject.Find("spawnPoint").transform.position, Quaternion.identity);
              projectile.AddForce(( hit.point - spawnPt.transform.position )*projectileSpeed);
          }
     }
 }
 
 function FixedUpdate()
 {
     var velocity = projectile.velocity;
     if (velocity == Vector3.zero) return;
 
     var magnitude = velocity.magnitude;
     if (magnitude > projectileSpeed || magnitude < projectileSpeed)
     {
         velocity *= (projectileSpeed / magnitude);
         projectile.velocity = velocity;
     }
 }

I'm so happy! :D Who have the same problem, you can use this code :) thx for help AlucardJ :)

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martimillion · Apr 18, 2014 at 09:21 AM 0

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I know it old ! But your code has an error! RaycastHit hit variable haven't been assigned

Can't shoot towards mouse click point

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