Touch.phase

var phase: TouchPhase;

描述了触摸的相位。

在触摸阶段指的是手指已对最近的帧的更新的动作。由于接触被追踪设备在其“一生”，在之间的接触和动作的开始和结束可以报上发生的帧。的相位特性可以被用作一个“开关”语句的基础上，或作为更sophisitcated状态处理系统的一部分。

var startPos: Vector2;var direction: Vector2;var directionChosen: boolean;
function Update () {	// Track a single touch as a direction control.	if (Input.touchCount > 0) {		var 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...	}}