转换光线投射从3D到2D

本文关键字：2D 3D 光线投射 转换 | 更新日期: 2023-09-27 18:18:32

嗨，我试图转换一个代码，工作在3D项目获得gameobject，我点击鼠标工作在2D，因为我现在做一个2D项目

public class SetTower : MonoBehaviour {
    public int selected;
    public GameObject[] towers;
    public float[] prices;
    public GameObject tile;
    private Money moneyScript;
    // Use this for initialization
    void Start ()
    {
        moneyScript = GameObject.Find("GameLogic").GetComponent<Money>();
    }
    // Update is called once per frame
    void Update ()
    {
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        RaycastHit hit;
        if (Physics.Raycast(ray, out hit, 20))
        {
            if(hit.transform.tag == "Tile")
            {
                tile = hit.transform.gameObject;
            }
            else
            {
                tile = null;
            }
            if (Input.GetMouseButtonDown(0) && tile != null)
            {
                TileTaken tileScript = tile.GetComponent<TileTaken>();
                if(!tileScript.isTaken && moneyScript.money >= prices[selected])
                {
                    moneyScript.money -= prices[selected];
                    Vector2 pos = new Vector2(tile.transform.position.x, tile.transform.position.y);
                    tileScript.tower = (GameObject)Instantiate(towers[selected], pos, Quaternion.identity);
                    tileScript.isTaken = true;
                }
            }
        }
    }
}

转换光线投射从3D到2D

将Camera.main.ScreenPointToRay替换为Camera.main.ScreenToWorldPoint, Physics.Raycast替换为Physics2D.Raycast, RaycastHit替换为RaycastHit2D。确保切换到2D Colliders。例如，Box Collider应该替换为Box Collider 2D。

public class SetTower : MonoBehaviour
{
    public int selected;
    public GameObject[] towers;
    public float[] prices;
    public GameObject tile;
    private Money moneyScript;
    // Use this for initialization
    void Start()
    {
        moneyScript = GameObject.Find("GameLogic").GetComponent<Money>();
    }
    // Update is called once per frame
    void Update()
    {
        Vector2 ray = Camera.main.ScreenToWorldPoint(Input.mousePosition);
        RaycastHit2D hit = Physics2D.Raycast(ray, Vector2.zero, 20);
        if (hit)
        {
            if (hit.transform.tag == "Tile")
            {
                tile = hit.transform.gameObject;
            }
            else
            {
                tile = null;
            }
            if (Input.GetMouseButtonDown(0) && tile != null)
            {
                TileTaken tileScript = tile.GetComponent<TileTaken>();
                if (!tileScript.isTaken && moneyScript.money >= prices[selected])
                {
                    //moneyScript.money -= prices[selected];
                    Vector2 pos = new Vector2(tile.transform.position.x, tile.transform.position.y);
                    //tileScript.tower = (GameObject)Instantiate(towers[selected], pos, Quaternion.identity);
                    //tileScript.isTaken = true;
                }
            }
        }
    }
}
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