Multitouch

Hey guys, im almost finished my game project for android platform. basiclly i never developed for android and i wasnt messing with stuff like touch and multitouch..

So my game is a cubes game, you have to destroy all the cubes on the screen less than 20sec. so i use OnMouseDown function to destroy the cubes and it works on android perfect.. but i want to make the app multitouch, to give the players the abillity to destory a several cubes at the same time with 2-3 fingers on the screen.

i used the examples from this and this links but it wont work.. as soon as i press on the screen and not on the cubes it makes the score++.

 

Do you have any code? Do your cubes have colliders on them? Generally these are the steps to take.

1. Get the screen position of the individual touch we are interested in.
2. Use Camera.ScreenPointToRay() to find out where that touch is in the game world.
   • http://docs.unity3d.com/ScriptReference/Camera.ScreenPointToRay.html
3. Use that Ray with Physics.Raycast() to see if the player's touch hit any colliders in the world.
   • http://docs.unity3d.com/ScriptReference/Physics.Raycast.html

 

(EDIT: Original code is gone! But anyone else reading this should get a good idea how to tell if the player is touching something. =)

You can add this function to your class instead of that for loop.

Code (csharp):

1. bool TouchHitMe() {
2.   for(int i = 0; i < Input.touchCount; i++) {
3.     Touch touch = Input.getTouch(i);
4.     Ray touchRay = Camera.main.ScreenPointToRay(touch.position);
5.     RaycastHit[] touchHits = Physics.RaycastAll(touchRay);
6.     for (int n = 0; n < touchHits.Length; n++) {
7.       if (touchHits[n].collider == collider) {
8.         //HIT!
9.         return true;
10.       }
11.     }
12.   }
13.   return false;
14. }

Code (csharp):

1. void Update() {
2.   if (TouchHitMe()) { hp -= 25; }
3.   // ...
4. }

 

You are awesome! thank you