detecting taps on 3d objects in iOS

well I finally got it working, here is my final script (badly commented) I hope people can use it.

 var studioBlock : Transform; // blocker behind the door to stop you entering a room
 private var doorObject : GameObject; // the door gameobject (has a collider)
 var doorName = "stdr"; // name of the door gameobject
 private var Telefoon : GameObject;
 var telName = "ipod touch";
 private var hit : RaycastHit;
 private var ray : Ray;
 private var doorOpen : boolean = false;
 
 var inputCamera : Camera;
 
 
 function Start(){
 
 doorObject = GameObject.Find(doorName);
 Telefoon = GameObject.Find(telName);
     
 }
 
 function FixedUpdate (){
     if (Input.touchCount == 1) {
         var touch : Touch = Input.touches[0];
         
         if(touch.phase == TouchPhase.Began){
         print("tap");
         ray = inputCamera.ScreenPointToRay(touch.position);
         
             if(Physics.Raycast(ray, hit)){
                 switch(hit.collider.name){
                     case "stdr":
                         if(!doorOpen){
                             doorObject.transform.animation.Play();// plays the door animation
                             studioBlock.position.y = -100;// removes the room blocker
                             doorOpen = true;
                             //Destroy(this);// destroys the script so you can't spam the door
                         }
                         else
                         {
                             print("door is already open");
                         }
                     break;
                     case "scene phone":
                         print("iphone");
                     break;
                 }
             }
         }
     }
 }

it is attached to a empty game object somewhere in the scene

Dennis

Here is a clean way to get touch events on individual Game Objects without any switch. (my example use C#). The way I used is to create a script managing the Update(), getting which object is touched, and calling the MonoBehaviour script from the object itself. As I use Input component from Unity, it works on Desktop and iOS. The example use a sprite from 2DToolkit but can be applied to any GameObject type I believe...

1) Create an empty GameObject 2) Create a script called touchableManager and attach it to the empty game object. Here is the script:

 using UnityEngine;
 using System.Collections;
 
 public class touchableManager : MonoBehaviour
 {
 
  protected GameObject touchedObject;
  private RaycastHit hit;
 
  // Use this for initialization
  void Start ()
  {
  
  }
  
  // Update is called once per frame
  protected virtual void Update ()
  {
  if (Input.GetMouseButtonDown (0)) {
  Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);
  if (Physics.Raycast (ray, out hit, 100.0f)) {
  touchedObject = hit.transform.gameObject; 
  touchedObject.GetComponent<touchableGameobject>().Touched();
  }
  else {
  print("GetMouseButtonDown on nothing");
  }
  }
  }
 }

3) Create a script called touchableGameobject, here is the code:

 using UnityEngine;
 using System.Collections;
 
 public class touchableGameobject : MonoBehaviour
 {
  
  tk2dSprite sprite;
 
  // Use this for initialization
  void Start ()
  {
  sprite = GetComponent<tk2dSprite>();
  print ("start mousemanager for "+sprite.name);
  }
  
  void OnMouseDown ()
  {
        print("Received a mouse down on "+sprite.name);
  }
  
  void Update ()
  { 
  }
  
  public void Touched()
  {
  }
 }

4) Attach this script to all your game objects!

Ah I think I understand, so with iOS you need to have just one raycasting function and then detect which object it hit?

Seems a bit confusing because mouseUp raycasting and GUI taps/clicks don't work in this manner.

Anyone be so kind as to post a quick and dirty script they use for this?

heres the final code for those interested. Would still be interested in a bit of code that could be applied to individual objects though, tried out some other things, made sense in code but didn't work. Anyhow:

 var myCamera : Camera;
 var hit : RaycastHit;
 var ray : Ray;
 
 function Update () {
     if(Input.touchCount == 1) {
         var touch: Touch = Input.touches[0];
         ray = myCamera.ScreenPointToRay(Input.touches[0].position);
         if(touch.phase == TouchPhase.Ended && Physics.Raycast(ray.origin, ray.direction,hit)){
             
             switch(hit.collider.name){
                 case "object01":
                     Debug.Log("Object01 tapped");
                     //things
                 break;
                 case "object02":
                     Debug.Log("Object02 tapped");
                     //things
                 break;
             }
         }
         else if (touch.phase == TouchPhase.Ended && !Physics.Raycast(ray.origin, ray.direction,hit)) {
             Debug.Log("tap cancelled");
         }
     }
 }

this only works when the user lifts up their digit, sausage, whatever, without leaving the confines of that objects area, if they change their mind and slide their tap away, it reports the tap as cancelled.