Rts touch select unit

Questions & Answers
1

I have a problem when I select unit all units selected

public class RayTarget: MonoBehaviour {

Touch touch;
Vector3 touchPosition;
public bool selected = false;
public GameObject Player;

void Start () 
{
	gameObject.GetComponent<PlayerTouch>().enabled = false;
}
private void Update(){

	if (Input.touchCount > 0 && Input.GetTouch (0).phase == TouchPhase.Began) {

		Ray ray = Camera.main.ScreenPointToRay (Input.GetTouch(0).position);
		RaycastHit2D hit = Physics2D.Raycast (ray.origin, ray.direction);
		if (hit.collider.tag == "Plane") {
			selected = !selected;
			if (selected == true)
			{
				Player.GetComponent<PlayerTouch>().enabled = true;
			} 
			else
			{
				Player.GetComponent<PlayerTouch>().enabled = false;
			}
		}
	}
}

}

2

Do not use tags in this case. I imagine you have multiple gameobjects with PlayerTouch component on them. You need to store your current selected object in a variable. On raycast hit check if a collider has PlayerTouch component (clicked over a unit) like this for example: var touched = hit.collider.GetComponentInParent(PlayerTouch); if it is not null, deselect previous one (if there is one) and select the touched and store it as current.

Other Details:
There should be a component on each unit, call it UnitSelection for example. It is responsible for changing user graphics so it appear selected or deselected, so it is gonna have 2 public methods to do it. Then, there is a selection manager. It is responsible for maintaining currently selected unit (if you want to select only one unit at the time) and for selecting/deselecting units. When user touch the screen (use also Input.GetMouseButtonDown(0) in Editor to test it out), the manager perform a raycast and check if we hit an object with UnitSelection component. If you have already a unit selected and stored in a variable in our manager, you will deselect it first (assuming you click on different unit or you clicked outside any unit. Then you select a new unit (using mentioned public methods of a UnitSelection script) and store it as current.

3

This Code is working when I use it for test in Editor for mouse input in method private void OnMouseDown()
but if write this code in: void Update() all units Selecting So i think the problem is a method for android like OnMouseDown().

please if you have a solution reply

The code :

using UnityEngine;
using System.Collections;

public class Select: MonoBehaviour {

	Touch touch;
	public bool selected = false;
	//public GameObject Player;

	void Start () 
	{
		gameObject.GetComponent<PlayerTouch>().enabled = false;
	}
	private void Update(){

		if (Input.touchCount > 0 && Input.GetTouch (0).phase == TouchPhase.Began) {

			Ray ray = Camera.main.ScreenPointToRay (Input.GetTouch(0).position);
			RaycastHit2D hit = Physics2D.Raycast (ray.origin, ray.direction);
			//Select Hool

			if (hit.collider.GetComponentInParent<PlayerTouch> ()) {
				selected = !selected;

				if (selected == true)
				{
					gameObject.GetComponent<PlayerTouch>().enabled = true;
				} 
				else
				{
					gameObject.GetComponent<PlayerTouch>().enabled = false;
				}
			}
		}
	}
}