球形圈内扇形攻击实例

一.运用的知识点

1).Physics.OverlapSphere(位置,半径)

参数物体的位置和球的半径,球形范围,用碰撞框的istigger也可以检测,只不过其返回值是 Collider [ ] x ,得到的是碰撞框数组

2).扇形攻击代码段

private bool UmbrellaAttact( Transform  attacker ,Transform attacked  ,float  angle, float radius)
    {        
        Vector3 deltaA = attacked.position - attacker.position;
        float tmpAngle = Mathf.Acos(Vector3.Dot(deltaA.normalized, attacker.forward)) * Mathf.Rad2Deg;
        if (tmpAngle < angle * 0.5f && deltaA.magnitude < radius)
        {
            return true;
        }
        return false;
    }

UmbrellaAttact传入参数(攻击者的transform,被攻击对象的transfor,扇形攻击的角度,扇形攻击的半径),返回值是bool类型!

3).

二.实例

    第一段:

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

public class S4Player : MonoBehaviour {
    void Start ()
    {        
    }
    void Update () 
    {
        if (Input.GetKeyDown(KeyCode.P))
        {
            AttackEnemy();
        }        
    }
    void AttackEnemy()
    {
        //获取在圈圈里面的人物
       Collider[] _colliders=    Physics.OverlapSphere(transform.position, 5);
        //   符合要求的敌人列表
        List<GameObject> AttackdList = new List<GameObject>();
//筛选完毕
        foreach (var v in _colliders)
        {
            //判断是否在攻击角度里面 
            if (UmbrellaAttact(transform, v.transform, 60, 5))
            {
                AttackdList.Add(v.gameObject);
                Debug.LogError(v.name);
            }
        }
//进行伤害计算
        foreach (GameObject o in AttackdList)
        {
            //获取距离
            float dis = Vector3.Distance(transform.position, o.transform.position);
            //计算减血数值多少
            float blood = 5 * 10 / dis;            
            //进行减血,调用敌人(第二段)身上的脚本
            o.GetComponent<S4Enemy>().Attacked(blood);
        }
    }
    
    private bool UmbrellaAttact( Transform  attacker ,Transform attacked  ,float  angle, float radius)
    {        
        Vector3 deltaA = attacked.position - attacker.position;
        float tmpAngle = Mathf.Acos(Vector3.Dot(deltaA.normalized, attacker.forward)) * Mathf.Rad2Deg;
        if (tmpAngle < angle * 0.5f && deltaA.magnitude < radius)
        {
            return true;
        }
        return false;
    }
}

第二段:

public class S4Enemy : MonoBehaviour
{
    public void Attacked(float Attackedblood)
    {
        Debug.LogWarningFormat("我是{0} 我掉血{1}",name,Attackedblood);        
    }    
}

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