82 lines
3.1 KiB
C#
82 lines
3.1 KiB
C#
using UnityEngine;
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public class Enemy : MonoBehaviour
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{
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//扇形角度
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//[SerializeField] private float angle = 80f;
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//扇形半径
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//[SerializeField] private float radius = 3.5f;
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//物体B
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[SerializeField] private Transform b;
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private bool flag;
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/// <summary>
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/// 判断target是否在扇形区域内
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/// </summary>
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/// <param name="sectorAngle">扇形角度</param>
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/// <param name="sectorRadius">扇形半径</param>
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/// <param name="attacker">攻击者的transform信息</param>
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/// <param name="target">目标</param>
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/// <returns>目标target在扇形区域内返回true 否则返回false</returns>
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private void Start()
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{
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}
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// Update is called once per frame
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private void Update()
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{
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//detactDeath();
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//flag = IsInRange(angle, radius, transform, b);
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}
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public bool IsInRange(float sectorAngle, float sectorRadius, Transform attacker, Transform target)
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{
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//攻击者位置指向目标位置的向量
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Vector3 direction = target.position - attacker.position;
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//点乘积结果
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float dot = Vector3.Dot(direction.normalized, transform.forward);
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//反余弦计算角度
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float offsetAngle = Mathf.Acos(dot) * Mathf.Rad2Deg;
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return offsetAngle < sectorAngle * .5f && direction.magnitude < sectorRadius;
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}
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/*
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private void OnDrawGizmos()
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{
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Handles.color = flag ? Color.cyan : Color.red;
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float x = radius * Mathf.Sin(angle / 2f * Mathf.Deg2Rad);
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float y = Mathf.Sqrt(Mathf.Pow(radius, 2f) - Mathf.Pow(x, 2f));
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Vector3 a = new Vector3(transform.position.x - x, transform.position.y, transform.position.z + y);
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Vector3 b = new Vector3(transform.position.x + x, transform.position.y, transform.position.z + y);
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Handles.DrawLine(transform.position, a);
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Handles.DrawLine(transform.position, b);
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float half = angle / 2;
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for (int i = 0; i < half; i++)
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{
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x = radius * Mathf.Sin((half - i) * Mathf.Deg2Rad);
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y = Mathf.Sqrt(Mathf.Pow(radius, 2f) - Mathf.Pow(x, 2f));
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a = new Vector3(transform.position.x - x, transform.position.y, transform.position.z + y);
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x = radius * Mathf.Sin((half - i - 1) * Mathf.Deg2Rad);
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y = Mathf.Sqrt(Mathf.Pow(radius, 2f) - Mathf.Pow(x, 2f));
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b = new Vector3(transform.position.x - x, transform.position.y, transform.position.z + y);
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Handles.DrawLine(a, b);
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}
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for (int i = 0; i < half; i++)
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{
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x = radius * Mathf.Sin((half - i) * Mathf.Deg2Rad);
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y = Mathf.Sqrt(Mathf.Pow(radius, 2f) - Mathf.Pow(x, 2f));
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a = new Vector3(transform.position.x + x, transform.position.y, transform.position.z + y);
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x = radius * Mathf.Sin((half - i - 1) * Mathf.Deg2Rad);
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y = Mathf.Sqrt(Mathf.Pow(radius, 2f) - Mathf.Pow(x, 2f));
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b = new Vector3(transform.position.x + x, transform.position.y, transform.position.z + y);
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Handles.DrawLine(a, b);
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}
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}
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*/
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} |