Change Colider to Raycast instead?

Question

Anyone out there know the solution, apparently its real hard to find lol. Right now I have to be standing on a colider to pick up the object. I would much rather just click on the object using a raycast, seems more natural for my kinda game. Suggestions?

 using UnityEngine;
 using System.Collections;
 
 public class DoneKeyPickup : MonoBehaviour
 {
     public AudioClip keyGrab;                            // Audioclip to play when the key is picked up.
     
     
     private GameObject player;                            // Reference to the player.
     private DonePlayerInventory playerInventory;        // Reference to the player's inventory.
     
     
     void Awake ()
     {
         // Setting up the references.
         player = GameObject.FindGameObjectWithTag(DoneTags.player);
         playerInventory = player.GetComponent<DonePlayerInventory>();
     }
     
     
     void OnTriggerStay (Collider other)
     
 
 {
 
 // If the colliding gameobject is the player...
         if(other.gameObject == player)
 {
             
         if(Input.GetButtonDown("Interact"))        
         
 {
 
 // ... play the clip at the position of the key...
             AudioSource.PlayClipAtPoint(keyGrab, transform.position);
             
             // ... the player has a key ...
             playerInventory.hasKey = true;
             
             // ... and destroy this gameobject.
             Destroy(gameObject);
         }
     }
 }
 }

Answer 1

Answer by Romano · Feb 24, 2014 at 02:19 AM

I wrote a post a while ago explaining a little bit what's tricky about trying to do raycast clicks in 2D, there's also a script there that solves the issue:

http://notquiteblackandwhite.com/post/75474540217/how-to-do-2d-mouse-clicks-in-unity

Hope it helps!

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Ouija · Feb 24, 2014 at 02:27 AM 0

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It is a FPS so I guess that would be 3d not 2d. Would it work the same you think?

Romano · Feb 24, 2014 at 02:33 AM 0

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I'm an assclown, I totally read the word 2D from another question and thought it was this one, sorry...

This particular script only works in 2D but could be modified to use z depth ins$$anonymous$$d of sorting layers/order for 3D.

Ouija · Feb 24, 2014 at 02:43 AM 0

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haha way to funny. We all have those days. If you can think of any solution to mod the script please let me know

Edit: Went to your website the game looks incredible, I wanna play it badlyyyyyy

Romano · Feb 24, 2014 at 03:37 AM 0

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Hehe, cheers. This guy outlines how to do it: http://answers.unity3d.com/questions/42384/raycasting-with-mouse-click-but-nothing-is-happeni.html

Need to make sure whatever you're trying to click on has a box collider component attached.

Ouija · Feb 24, 2014 at 05:32 PM 0

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That would be great if I were using java haha I'm using C# in the code above

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Answer 2

Hey Guys, Here is how I did a RayCast script placed on the camera. It's for MouseInput not Touch but touch is similar. Note you can check for the "tag" of the collision object or the "name" (As seen in the Hierarchy) either one works. Below uses name.

It's in C# but I think I have one kicking around (Similar but not the same) in JS if you need it. I did try this in 2D and it worked. Not sure if that is a correct application but it worked. I've been meaning to post a Q about that.

Anyway, here is also a link to discussion on Touch in 2D using raycast script.. http://answers.unity3d.com/questions/638075/how-to-destroy-object-by-touch.html

There are several types of Raycasts. The script below uses Physics.Raycast but perhaps Collider.Raycast would be better for your application. I'm not not sure I've not tried them all. Here is a link to the search for Raycast in the Script reference doc. http://docs.unity3d.com/Documentation/ScriptReference/30_search.html?q=raycast

I have not tested this script below since I took out some stuff to show it to you. The vars could also be defined outside the update function. It all depends on what you're trying to do. Hope it helps.

 using UnityEngine;
 
 using System.Collections;
 
 public class rayCastOnMouseDown : MonoBehaviour

{

     void Update() 
     {

         // If left mouse is  down.
         if (Input.GetMouseButtonDown(0))
         {
             Debug.Log ("LeftMouse is down");
             
             RaycastHit hitInfo;
             Ray rayOrigin = Camera.main.ScreenPointToRay(Input.mousePosition);
         
             if (Physics.Raycast(rayOrigin, out hitInfo, 20))
             {
                 Debug.Log ("We've hit " + hitInfo.transform.Name);
                 if (hitInfo.transform.name == "MyTargetObject")
                 {    
                     Debug.Log("We hit TARGET 1");
                     // .. do whatever you want to do to Target 1 Object...
                 }
 
                 if (hitInfo.transform.name == "MyOtherTargetObject")
                 {    
                     Debug.Log("We hit TARGET 2");
                     // .. do whatever you want to do to Target 2 Object...
                 }
             }
         }
     }
 }

Change Colider to Raycast instead?

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