Touch.phase

Description

Describes the phase of the touch.

The touch phase refers to the action the finger has taken on the most recent frame update. Since a touch is tracked over its "lifetime" by the device, the start and end of a touch and movements in between can be reported on the frames they occur. The phase property can be used as the basis of a "switch' statement or as part of a more sophisitcated state handling system.

#pragma strict
public var startPos: Vector2;
public var direction: Vector2;
public var directionChosen: boolean;
function Update() {
	// Track a single touch as a direction control.
	if (Input.touchCount > 0) {
		var touch: Touch = Input.GetTouch(0);
		// Handle finger movements based on touch phase.
		switch (touch.phase) {
			// Record initial touch position.
			case TouchPhase.Began:
				startPos = touch.position;

				directionChosen = false;

				break;
			// Determine direction by comparing the current touch position with the initial one.
			case TouchPhase.Moved:
				direction = touch.position - startPos;

				break;
			// Report that a direction has been chosen when the finger is lifted.
			case TouchPhase.Ended:
				directionChosen = true;

				break;
		}
	}
	if (directionChosen) {
		// Something that uses the chosen direction...
	}
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public Vector2 startPos;
    public Vector2 direction;
    public bool directionChosen;
    void Update()
    {
        // Track a single touch as a direction control.
        if (Input.touchCount > 0)
        {
            Touch touch = Input.GetTouch(0);

            // Handle finger movements based on touch phase.
            switch (touch.phase)
            {
                // Record initial touch position.
                case TouchPhase.Began:
                    startPos = touch.position;
                    directionChosen = false;
                    break;

                // Determine direction by comparing the current touch position with the initial one.
                case TouchPhase.Moved:
                    direction = touch.position - startPos;
                    break;

                // Report that a direction has been chosen when the finger is lifted.
                case TouchPhase.Ended:
                    directionChosen = true;
                    break;
            }
        }
        if (directionChosen)
        {
            // Something that uses the chosen direction...
        }
    }
}