[游戏开发]Unity C# 获取手势坐标检测物体（easytouch替换方案）

物体使用box collider碰撞检测太消耗性能，用坐标检测可以去掉碰撞器，直接贴代码

using System;
using System.Collections;
using System.Collections.Generic;
using Spine.Unity;
using TMPro;
using UnityEditor;
using UnityEngine;
using UnityEngine.UI;

public class touch_position : MonoBehaviour
{
    public GameObject _gameObject1;
    public GameObject _gameObject2;
    void Start()
    {
        
    }
    void Update()
    {
    	//鼠标坐标
        float touchx = Input.mousePosition.x;
        float touchy = Input.mousePosition.y;
        //将3D物体坐标映射到2D屏幕上    
        Vector2 convertedGUIPos1 = HandleUtility.WorldToGUIPoint(_gameObject1.transform.position);
        Vector2 convertedGUIPos2 = HandleUtility.WorldToGUIPoint(_gameObject2.transform.position);
        float pai_width = convertedGUIPos2.x - convertedGUIPos1.x;
        Vector3 length = _gameObject1.GetComponent<Renderer>().bounds.size;
        float pai_height = length.y / length.x * pai_width;

        float fixedright = convertedGUIPos2.x + pai_width / 2;
        float workHeight = Screen.height;
        float pai_y = workHeight - convertedGUIPos2.y;
        //划分点击响应的范围
        if (touchx >= fixedright - pai_width * 13 && touchx <= fixedright && touchy <=200 
                                                  && touchy <= pai_y + pai_height / 2
                                                  && touchy >= pai_y - pai_height / 2)
        {
            float num = (fixedright - touchx) / pai_width;
            Debug.Log("mouse:" + Input.mousePosition);
            Debug.Log("number:" + (13 - Math.Floor(num)));
        }
    }
}

效果：点击任一张牌可返回对应的编号（具体功能直接在最后三行改）