RaycastAll code

Raycast

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class csRaycast : MonoBehaviour {

    private float speed = 5f;

	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
        float amtMove = speed * Time.deltaTime;
        float hor = Input.GetAxis("Horizontal");
        transform.Translate(Vector3.right * hor * amtMove);

        //DrawRay
        Debug.DrawRay(transform.position, transform.forward * 8, Color.red);

        //Raycast
        RaycastHit hit;
        if (Physics.Raycast(transform.position, transform.forward, out hit, 8))
        {
            Debug.Log(hit.collider.gameObject.name);
        }
	}
}

Raycast (찍은부분에 도형 생성)

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraRayCastEx : MonoBehaviour {
    public GameObject bullet;
	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
        if (Input.GetKeyDown(KeyCode.Mouse0))
        {
	    //Input.mousePosition : 현재 마우스 위치를 픽셀 좌표로 나타냅니다.
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if(Physics.Raycast(ray, out hit))
            {
                Debug.Log("hit!!" + hit.transform.name);
                //hit.normal : 법선, hit.point : 충돌이 일어난 부분의 월드 포지션
                Instantiate(bullet, hit.point, Quaternion.LookRotation(hit.normal));
            }
        }
	}
}

Raycast (화면에서 찍기2)

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraRayCastEx : MonoBehaviour {

	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
        if (Input.GetKeyDown(KeyCode.Mouse0))
        {
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if(Physics.Raycast(ray, out hit))
            {
                Debug.Log("hit!!");
            }
        }
	}

Raycast Screen(화면에서 찍기)

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MyScript : MonoBehaviour {
    Camera mainCamera;
	// Use this for initialization
	void Start () {
        mainCamera = GameObject.Find("Main Camera").GetComponent<Camera>();
	}
	
	// Update is called once per frame
	void Update () {
        if (Input.GetMouseButtonDown(0))
        {
            Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if(Physics.Raycast(ray,out hit))
            {
                if (transform.IsChildOf(hit.transform))
                {
                    print("Child OK");
                }
                else
                {
                    print("Child NO");
                }
            }
        }
	}
}

RaycastAll

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class csRaycastAll : MonoBehaviour {
    float speed = 5f;

	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
        float amtMove = speed * Time.deltaTime;
        float hor = Input.GetAxis("Horizontal");
        transform.Translate(Vector3.right * hor * amtMove);

        //DrawRay
        Debug.DrawRay(transform.position, transform.forward * 8, Color.red);

        //RaycastAll
        RaycastHit[] hits;
        hits = Physics.RaycastAll(transform.position, transform.forward, 8.0f);

        for(int i= 0; i < hits.Length; i++)
        {
            RaycastHit hit = hits[i];
            Debug.Log(hit.collider.gameObject.name);
        }
	}
}

RaycastHit (point)

GameObject Shooting = Instantiate(GunShot, rayHit.point, Quaternion.LookRotation(rayHit.normal));
Instantiate(GunShot, rayHit.point, Quaternion.LookRotation(rayHit.normal));

화면에서부터 마우스 오른쪽 버튼을 클릭하면 클릭된 월드 위치값을 Debug에 찍기

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraRay : MonoBehaviour {

    public Camera mainCamera;
    Vector3 hitPos = Vector3.zero;

    RaycastHit hit;

	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
        if (Input.GetKeyDown(KeyCode.Mouse1))
        {
            Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
            
            if(Physics.Raycast(ray, out hit))
            {
                hitPos = hit.point;
                Debug.Log(hitPos);
            }
        }
	}
}