TouchScript

using UnityEngine;
using System.Collections;

public class TouchController : MonoBehaviour {

    public GameObject joypadBase1;
    public GameObject joypadStick1;
    public GameObject joypadBase2;
    public GameObject joypadStick2;

    private int screenWidth;
    private int screenHeight;
    private bool[] startedLeft = {true,true};
    private int[] count = {0,0};
    public Camera camera;

    void Start ()
    {
        screenWidth = Screen.width;
        screenHeight = Screen.height;
        //joypadBase1.transform.position = camera.ScreenToWorldPoint(new Vector3(screenWidth*0.15f,screenHeight*0.25f,1));
        //joypadBase2.transform.position = camera.ScreenToWorldPoint(new Vector3(screenWidth*0.85f,screenHeight*0.25f,1));

        joypadBase1.transform.position = camera.ScreenToWorldPoint(new Vector3(screenWidth*0.15f,screenHeight*0.25f,1));
        joypadBase2.transform.position = camera.ScreenToWorldPoint(new Vector3(screenWidth*0.85f,screenHeight*0.25f,1));
    }
    void Update ()
    {
        if(Input.touchCount > 0)
        {
            if(Input.GetTouch (0).phase == TouchPhase.Began)
            {
                if(Input.GetTouch (0).position.x < screenWidth/2)
                {
                    joypadBase1.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(0).position.x,Input.GetTouch(0).position.y,1));
                    startedLeft[0] = true;
                    Debug.Log("Zero is now left");
                }
                if(Input.GetTouch (0).position.x >= screenWidth/2)
                {
                    joypadBase2.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(0).position.x,Input.GetTouch(0).position.y,1));
                    startedLeft[0] = false;
                    Debug.Log("Zero is now right");
                }
            }
            if(Input.GetTouch (0).phase == TouchPhase.Moved)
            {
                if(Input.GetTouch (0).position.x < screenWidth/2)
                {
                    if(startedLeft[0] == false)             //right->left transition
                    {
                        //Debug.Log("Right->Left");
                        joypadStick2.transform.localPosition = new Vector3(0,0,0);
                        startedLeft[0] = true;
                        joypadBase1.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(0).position.x,Input.GetTouch(0).position.y,1));
                    }
                    joypadStick1.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(0).position.x,Input.GetTouch(0).position.y,1));
                }
                if(Input.GetTouch (0).position.x >= screenWidth/2)
                {
                    if(startedLeft[0] == true)                  //left->right transition
                    {
                        //Debug.Log("Left->Right");
                        joypadStick1.transform.localPosition = new Vector3(0,0,0);
                        startedLeft[0] = false;
                        joypadBase2.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(0).position.x,Input.GetTouch(0).position.y,1));
                    }
                    joypadStick2.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(0).position.x,Input.GetTouch(0).position.y,1));
                }
            }
            if(Input.GetTouch (0).phase == TouchPhase.Ended || Input.GetTouch (0).phase == TouchPhase.Canceled)
            {
                if(Input.GetTouch (0).position.x < screenWidth/2)
                {
                    joypadStick1.transform.localPosition = new Vector3(0,0,0);
                }
                if(Input.GetTouch (0).position.x >= screenWidth/2)
                {
                    joypadStick2.transform.localPosition = new Vector3(0,0,0);
                }
            }
            if(Input.touchCount == 2)
            {
                if(Input.GetTouch (1).phase == TouchPhase.Began)
                {
                    if(Input.GetTouch (1).position.x < screenWidth/2)
                    {
                        joypadBase1.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(1).position.x,Input.GetTouch(1).position.y,1));
                        startedLeft[1] = true;
                        Debug.Log("One is now left");
                    }
                    if(Input.GetTouch (1).position.x >= screenWidth/2)
                    {
                        joypadBase2.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(1).position.x,Input.GetTouch(1).position.y,1));
                        startedLeft[1] = false;
                        Debug.Log("One is now right");
                    }
                }
                if(Input.GetTouch (1).phase == TouchPhase.Moved)
                {
                    if(Input.GetTouch (1).position.x < screenWidth/2)
                    {
                        if(startedLeft[1] == false)             //right->left transition
                        {
                            //Debug.Log("Right->Left");
                            joypadStick2.transform.localPosition = new Vector3(0,0,0);
                            startedLeft[1] = true;
                            joypadBase1.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(1).position.x,Input.GetTouch(1).position.y,1));
                        }
                        joypadStick1.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(1).position.x,Input.GetTouch(1).position.y,1));
                    }
                    if(Input.GetTouch (1).position.x >= screenWidth/2)
                    {
                        if(startedLeft[1] == true)                  //left->right transition
                        {
                            //Debug.Log("Left->Right");
                            joypadStick1.transform.localPosition = new Vector3(0,0,0);
                            startedLeft[1] = false;
                            joypadBase2.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(1).position.x,Input.GetTouch(1).position.y,1));
                        }
                        joypadStick2.transform.position = camera.ScreenToWorldPoint(new Vector3(Input.GetTouch(1).position.x,Input.GetTouch(1).position.y,1));
                    }
                }
                if(Input.GetTouch (1).phase == TouchPhase.Ended || Input.GetTouch (1).phase == TouchPhase.Canceled)
                {
                    if(Input.GetTouch (1).position.x < screenWidth/2)
                    {
                        joypadStick1.transform.localPosition = new Vector3(0,0,0);
                    }
                    if(Input.GetTouch (1).position.x >= screenWidth/2)
                    {
                        joypadStick2.transform.localPosition = new Vector3(0,0,0);
                    }
                }
            }
        }
    }
}