射线()-其他

射线()

射线

1.射线检测

1.1检测单个物体

using UnityEngine;

public class Juse : MonoBehaviour
{
    public LayerMask layerMask;
    private void Start()
    {
        layerMask = LayerMask.GetMask("ine");
    }
    private void Update()
    {
        //通过起始点和方向定义一条射线
        Ray ray = new Ray(transform.position, transform.forward);
        //射线碰撞信息
        RaycastHit hit;
        //打印射线第一个检测到的层级设置成“ine”的物体的名称，射线长度为100。
        if (Physics.Raycast(ray,out hit,100f,layerMask))
        {
            Debug.Log("hitname:" + hit.transform.name);
        }
    }
}

1.2检测多个物体

using UnityEngine;

public class Juse : MonoBehaviour
{
    private void Update()
    {
        RaycastHit[] hits = Physics.RaycastAll(transform.position, transform.forward, 100f);
        for(int i = 0; i < hits.Length; i++)
        {
            Debug.Log("NO."+i+":"+ hits[i].collider.name);
        }
    }
}

1.3球型检测

using UnityEngine;

public class Juse : MonoBehaviour
{
    private void Update()
    {
        Collider[] colliders = Physics.OverlapSphere(transform.position, 10f);
        for (int i = 0; i < colliders.Length; i++)
        {
            Debug.Log("NO."+i+":"+ colliders[i].gameObject.name);
        }
    }
}

1.4常用检测

using UnityEngine;

public class Juse : MonoBehaviour
{
    Ray ray;
    RaycastHit hit;
    void Update()
    {
        ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        if (Physics.Raycast(ray,out hit))
        {
            Debug.Log("hit:"+hit.transform.name);
        }
    }
}

2.射线绘制

绘制射线一般用于调试，有两种方式

2.1方式一

using UnityEngine;

public class Juse : MonoBehaviour
{
    private void Start()
    {
        //两个点确定的射线。参数分别为：发射点位置，另一个点的位置，射线颜色，持续时间，能否被遮挡
        Debug.DrawLine(transform.position, new Vector3(0, 0, 10), Color.green, 10f, true);
    }
}

2.2方式二

using UnityEngine;

public class Juse : MonoBehaviour
{
    private void Start()
    {
        //点和方向确定的射线。参数分别为：发射点位置，方向，射线颜色，持续时间，能否被遮挡
        Debug.DrawRay(transform.position, new Vector3(0, 0, 10), Color.green, 10f, true);
    }
}

射线

1.射线检测

1.1检测单个物体

using UnityEngine;

public class Juse : MonoBehaviour
{
    public LayerMask layerMask;
    private void Start()
    {
        layerMask = LayerMask.GetMask("ine");
    }
    private void Update()
    {
        //通过起始点和方向定义一条射线
        Ray ray = new Ray(transform.position, transform.forward);
        //射线碰撞信息
        RaycastHit hit;
        //打印射线第一个检测到的层级设置成“ine”的物体的名称，射线长度为100。
        if (Physics.Raycast(ray,out hit,100f,layerMask))
        {
            Debug.Log("hitname:" + hit.transform.name);
        }
    }
}

1.2检测多个物体

using UnityEngine;

public class Juse : MonoBehaviour
{
    private void Update()
    {
        RaycastHit[] hits = Physics.RaycastAll(transform.position, transform.forward, 100f);
        for(int i = 0; i < hits.Length; i++)
        {
            Debug.Log("NO."+i+":"+ hits[i].collider.name);
        }
    }
}

1.3球型检测

using UnityEngine;

public class Juse : MonoBehaviour
{
    private void Update()
    {
        Collider[] colliders = Physics.OverlapSphere(transform.position, 10f);
        for (int i = 0; i < colliders.Length; i++)
        {
            Debug.Log("NO."+i+":"+ colliders[i].gameObject.name);
        }
    }
}

1.4常用检测

using UnityEngine;

public class Juse : MonoBehaviour
{
    Ray ray;
    RaycastHit hit;
    void Update()
    {
        ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        if (Physics.Raycast(ray,out hit))
        {
            Debug.Log("hit:"+hit.transform.name);
        }
    }
}

2.射线绘制

绘制射线一般用于调试，有两种方式

2.1方式一

using UnityEngine;

public class Juse : MonoBehaviour
{
    private void Start()
    {
        //两个点确定的射线。参数分别为：发射点位置，另一个点的位置，射线颜色，持续时间，能否被遮挡
        Debug.DrawLine(transform.position, new Vector3(0, 0, 10), Color.green, 10f, true);
    }
}

2.2方式二

using UnityEngine;

public class Juse : MonoBehaviour
{
    private void Start()
    {
        //点和方向确定的射线。参数分别为：发射点位置，方向，射线颜色，持续时间，能否被遮挡
        Debug.DrawRay(transform.position, new Vector3(0, 0, 10), Color.green, 10f, true);
    }
}