unity3D用滑鼠和射線控制物體移動(一)
晉中職業技術學院 智祥明
創建4個Cube，分別命名為Cube0、Cube1、Cube2、Cube3,擺成一排，前面放一個小球，命名為Sphere，用滑鼠單擊Cube時，讓Cube移到小球位置，當單擊Cube0時,Cube0移到Sphere位置；當單擊Cube1時，Cube1移到Sphere位置，Cube0移回原來位置；以此類推，
創建腳本，命名為Move.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Move : MonoBehaviour {
private Transform sphere;
public LayerMask mylayer;
private bool move;
// Use this for initialization
void Start () {
sphere = GameObject.Find(“Sphere”).GetComponent();
}
// Update is called once per frame
void Update () {
Ray ray = Camera.main .ScreenPointToRay (Input .mousePosition );
RaycastHit rayhit;
if (Input.GetMouseButton(0) && Physics.Raycast(ray, out rayhit, 500f, mylayer))
move = !move;
if(move)
gameObject.transform.position = Vector3.MoveTowards(transform.position, sphere.position, 0.2f);
}
}
將Move腳本分別掛在Cube0、Cube1、Cube2、Cube3上，相當于創建了4個Move的實體物件，射線從攝像機發出，射到點擊的螢屏位置，碰到Cube的Collider上，要分別進行互動，就要把Cube0、Cube1、Cube2、Cube3分別放到不同的層Layer上，所以要創建4個Layter層，分別對應各自的層，以上腳本實作了單擊Cube時，4個物件都會移到Sphere位置，
要想讓一個物體向Sphere移動時，其他物體回到原來位置，我們可以創建一個單例物件的腳本，命名為Only，單例物件就是一個公共的區域，我們宣告4個Vecoter3位置，記錄4個Cube的原始位置，宣告一個Collider的變數，用于存放射線碰到的Collider，
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Only : MonoBehaviour {
public static Only instance;
public Vector3[] cube_orign;
public Collider click_Collider;
void Awake()
{
instance = this;
cube_orign = new Vector3[4];
for (int i = 0; i < 4; i++)
{
cube_orign[i] = GameObject.Find(“Cube” + i).GetComponent().position;
}
}
}
把我們移動腳本Move修改如下：
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Move : MonoBehaviour
{
private Transform sphere;
public LayerMask mylayer;
private int i;
private Vector3 orign;
RaycastHit rayhit;
// Use this for initialization
void Start()
{
sphere = GameObject.Find(“Sphere”).GetComponent();
i = int.Parse(gameObject.name.Substring(4));
orign = Only.instance.cube_orign[i];
}
private void print(Func toString)
{
throw new NotImplementedException();
}
// Update is called once per frame
void Update()
{
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if (Input.GetMouseButton(0) && Physics.Raycast(ray, out rayhit, 500f, mylayer))
{
Only .instance . click_Collider = rayhit.collider;
}
if (Only.instance.click_Collider == gameObject.GetComponent())
{
gameObject.transform.position = Vector3.MoveTowards(transform.position, sphere.position, 0.2f);
}
if (Only .instance .click_Collider != gameObject.GetComponent())
gameObject.transform.position = Vector3.MoveTowards(transform.position, orign , 0.2f);
}
}
轉載請註明出處，本文鏈接：https://www.uj5u.com/ruanti/211302.html
標籤：其他