关于移动端触屏输入控制的API的使用汇总(一)

关于移动端触屏输入控制的API的使用汇总(一)<26/11/2017>

官方文档:

官方代码示例:

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...
		}
	}

移动物体示例:

using UnityEngine;  
using System.Collections;  
  
public class example : MonoBehaviour {  
    public float speed = 0.1F;  
    void Update() {  
        if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Moved) {  
            Vector2 touchDeltaPosition = Input.GetTouch(0).deltaPosition;  
            transform.Translate(-touchDeltaPosition.x * speed, -touchDeltaPosition.y * speed, 0);  
        }  
    }  
}  

点击碰撞克隆:

using UnityEngine;  
using System.Collections;  
  
public class example : MonoBehaviour {  
    public GameObject projectile;  
    void Update() {  
        int i = 0;  
        while (i < Input.touchCount) {  
            if (Input.GetTouch(i).phase == TouchPhase.Began)  
                clone = Instantiate(projectile, transform.position, transform.rotation) as GameObject;  
              
            ++i;  
        }  
    }  
}  

又或者

using UnityEngine;  
using System.Collections;  
  
public class example : MonoBehaviour {  
    public GameObject particle;  
    void Update() {  
        int i = 0;  
        while (i < Input.touchCount) {  
            if (Input.GetTouch(i).phase == TouchPhase.Began) {  
                Ray ray = Camera.main.ScreenPointToRay(Input.GetTouch(i).position);  
                if (Physics.Raycast(ray))  
                    Instantiate(particle, transform.position, transform.rotation) as GameObject;  
                  
            }  
            ++i;  
        }  
    }  
}