unity3d 屏幕触摸检测事件

短命女 2022-09-30 15:42 308阅读 0赞

# 屏幕上的触摸检测一般会检测点击，滑动，长按等 #

# TouchPhase Enumeration   #

Describes phase of a finger touch.

Values

<table style="color:rgb(51,51,51); font-family:Arial; font-size:14px; line-height:26px"> 
 <tbody> 
  <tr> 
   <td style="padding:0px; margin:0px; width:135px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <a href="http://unity3d.com/support/documentation/ScriptReference/TouchPhase.Began.html" style="color:rgb(20,93,123); text-decoration:none" rel="nofollow">Began</a></td> 
   <td style="padding:0px; margin:0px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <p style="line-height:17px; margin-top:0px; margin-bottom:1.5em; display:inline"> A finger touched the screen.</p> </td> 
  </tr> 
  <tr> 
   <td style="padding:0px; margin:0px; width:135px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <a href="http://unity3d.com/support/documentation/ScriptReference/TouchPhase.Moved.html" style="color:rgb(20,93,123); text-decoration:none" rel="nofollow">Moved</a></td> 
   <td style="padding:0px; margin:0px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <p style="line-height:17px; margin-top:0px; margin-bottom:1.5em; display:inline"> A finger moved on the screen.</p> </td> 
  </tr> 
  <tr> 
   <td style="padding:0px; margin:0px; width:135px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <a href="http://unity3d.com/support/documentation/ScriptReference/TouchPhase.Stationary.html" style="color:rgb(20,93,123); text-decoration:none" rel="nofollow">Stationary</a></td> 
   <td style="padding:0px; margin:0px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <p style="line-height:17px; margin-top:0px; margin-bottom:1.5em; display:inline"> A finger is touching the screen but hasn't moved.</p> </td> 
  </tr> 
  <tr> 
   <td style="padding:0px; margin:0px; width:135px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <a href="http://unity3d.com/support/documentation/ScriptReference/TouchPhase.Ended.html" style="color:rgb(20,93,123); text-decoration:none" rel="nofollow">Ended</a></td> 
   <td style="padding:0px; margin:0px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <p style="line-height:17px; margin-top:0px; margin-bottom:1.5em; display:inline"> A finger was lifted from the screen. This is the final phase of a touch.</p> </td> 
  </tr> 
  <tr> 
   <td style="padding:0px; margin:0px; width:135px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <a href="http://unity3d.com/support/documentation/ScriptReference/TouchPhase.Canceled.html" style="color:rgb(20,93,123); text-decoration:none" rel="nofollow">Canceled</a></td> 
   <td style="padding:0px; margin:0px; font-family:Helvetica,Arial,sans-serif; color:rgb(53,47,40); vertical-align:top"> <p style="line-height:17px; margin-top:0px; margin-bottom:1.5em; display:inline"> The system cancelled tracking for the touch, as when (for example) the user puts the device to her face or more than five touches happened simultaneously. This is the final phase of a touch.<br> </p> </td> 
  </tr> 
 </tbody> 
</table>

下面放两个例子：

滑动屏幕，物体跟着移动;

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);
            }
        }
    }

射线检测然后生成一个新物体：

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;
            }
        }
    }