387 lines
13 KiB
C#
387 lines
13 KiB
C#
using DG.Tweening;
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using DG.Tweening.Core;
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using DG.Tweening.Plugins.Options;
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using System.Collections;
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using System.Linq;
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using Unity.VisualScripting;
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using UnityEngine;
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using UnityEngine.UIElements;
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namespace Assets.Scripts
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{
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public class Bullet : MonoBehaviour
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{
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[Tooltip("火力")]
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public int power = 50;
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///// <summary>
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///// 已经击中的敌人个数
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///// </summary>
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//public int currentShotCount { get; set; } = 0;
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/// <summary>
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/// 当前命中的敌人位置
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/// </summary>
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public Vector3 currentHitPosition { get; set; } = Vector3.zero;
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public TweenerCore<Vector3, Vector3, VectorOptions> Tweener { get; set; } = null;
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public GameObject impactPrefab;
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public GameObject explosionPrefab;
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public float thrust;
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public Rigidbody thisRigidbody;
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public GameObject particleKillGroup;
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private Collider thisCollider;
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public bool IsShoting { get; set; } = false;
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public bool IsNeedDestroyInRecycle { get; set; } = false;
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public bool IsAutoLock { get; set; } = false;
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///// <summary>
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///// 是否已锁定目标
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///// </summary>
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//public bool IsLockedTarget { get; set; } = false;
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public Enemy LockTarget { get; set; } = null;
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public Enemy HitTarget { get; set; } = null;
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public Enemy BeforeHitTarget { get; set; } = null;
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private Vector3 _shotTargetPosition = Vector3.zero;
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public Vector3 ShotTargetPosition
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{
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get
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{
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if (LockTarget != null)
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{
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_shotTargetPosition = LockTarget.transform.position;
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//return LockTarget.transform.position;
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}
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return _shotTargetPosition;
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}
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set
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{
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_shotTargetPosition = value;
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}
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}
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public bool LookRotation = true;
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public bool Missile = false;
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public Transform missileTarget;
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public float projectileSpeed;
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public float projectileSpeedMultiplier;
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public bool ignorePrevRotation = false;
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public bool explodeOnTimer = false;
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public float explosionTimer;
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float timer;
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private Vector3 previousPosition;
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private Camera _cam;
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private int wallLayer = 0;
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private void Awake()
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{
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wallLayer = LayerMask.NameToLayer("Wall");
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_cam = Camera.main;
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}
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// Use this for initialization
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void Start()
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{
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thisRigidbody = GetComponent<Rigidbody>();
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if (Missile)
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{
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missileTarget = GameObject.FindWithTag("Target").transform;
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}
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thisCollider = GetComponentInChildren<Collider>();
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previousPosition = transform.position;
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}
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// Update is called once per frame
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void Update()
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{
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/* if(Input.GetButtonUp("Fire2"))
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{
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Explode();
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}*/
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timer += Time.deltaTime;
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if (timer >= explosionTimer && explodeOnTimer == true)
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{
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Explode();
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}
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}
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void FixedUpdate()
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{
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if (thisRigidbody != null)
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{
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if (Missile)
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{
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projectileSpeed += projectileSpeed * projectileSpeedMultiplier;
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// transform.position = Vector3.MoveTowards(transform.position, missileTarget.transform.position, 0);
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transform.LookAt(missileTarget);
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thisRigidbody.AddForce(transform.forward * projectileSpeed);
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}
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if (LookRotation && timer >= 0.05f && !thisRigidbody.velocity.Equals(Vector3.zero))
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{
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transform.rotation = Quaternion.LookRotation(thisRigidbody.velocity);
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}
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}
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CheckCollision(previousPosition);
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previousPosition.Set(transform.position.x, transform.position.y, transform.position.z);
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}
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/// <summary>
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/// 从RaycastHit数组中找到距离最近的碰撞
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/// </summary>
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/// <param name="hits">射线碰撞结果数组</param>
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/// <param name="rthit">输出最近的碰撞信息</param>
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/// <returns>是否找到有效碰撞</returns>
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private Enemy FindEnemyHit(RaycastHit[] hits, out RaycastHit rthit)
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{
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rthit = new RaycastHit();
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float minDistance = Mathf.Infinity;
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// 遍历所有碰撞结果，找到距离最小的
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foreach (RaycastHit hit in hits)
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{
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if (hit.collider.gameObject.layer == wallLayer)
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{
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rthit = hit;
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return null;
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}
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var enemy = hit.collider.gameObject.GetComponent<Enemy>();
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if (enemy != null && enemy != BeforeHitTarget)
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{
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rthit = hit;
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minDistance = hit.distance;
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return enemy;
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}
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//if (hit.distance < minDistance)
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//{
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// minDistance = hit.distance;
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// closestHit = hit;
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//}
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}
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// 如果minDistance还是无穷大，说明没有碰撞
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return null;// minDistance != Mathf.Infinity;
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}
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void CheckCollision(Vector3 prevPos)
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{
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if (IsShoting)
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{
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RaycastHit[] hits;
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Vector3 direction = transform.position - prevPos;
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Ray ray = new Ray(prevPos, direction);
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//float halfLen = 0;
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//if (thisCollider != null)
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//{
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// var extents = thisCollider.bounds.extents;
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// halfLen = extents.magnitude * 0.5f;
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//}
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float dist = Vector3.Distance(transform.position, prevPos);
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hits = Physics.RaycastAll(ray, dist);
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if (hits.Length > 0)
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{
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var enemy = FindEnemyHit(hits, out RaycastHit hit);
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if (hit.collider == null)
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{
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return;//穿过
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}
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//穿墙处理
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if (hit.collider.gameObject == null)
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{
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return;//穿过
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}
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if (hit.collider.gameObject.layer == wallLayer)
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{
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return;//穿过
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}
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if (hit.collider.gameObject.GetComponentInParent<Tower>() != null)
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{
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return;//穿过
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}
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//if (hit.collider.gameObject.GetComponentInParent<ParticleSystem>() != null)
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//{
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// return;//穿过
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//}
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if (hit.collider.gameObject != gameObject && hit.collider.gameObject.GetComponent<Bullet>() != null)
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{
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return;//穿过
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}
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if (enemy != null)
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{
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////如果子弹在怪物前面或者相交
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//if (CalcTool.IsTargetFrontOrIntersect(transform, enemy.transform))
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//{
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//if (_cam.orthographic)
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//{
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// if (VisibilityTool.IsObjectInFrustum(enemy.gameObject, _cam))
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// {
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// currentHitPosition = enemy.transform.position;
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// isHitted = true;
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// }
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// //命中
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// //isDestroyed = enemy.TakeDamage(this.power);
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//}
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//else
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//{
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// currentHitPosition = enemy.transform.position;
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// isHitted = true;
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//}
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if (VisibilityTool.IsObjectInFrustum(enemy.gameObject, _cam))
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{
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if (BeforeHitTarget != enemy)
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{
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BeforeHitTarget = enemy;//保证只触发一次
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HitTarget = enemy;
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currentHitPosition = enemy.transform.position;
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Hitted();
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}
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}
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//}
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}
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////var impact = InitImpact(hit.point, hit.normal);
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//if (!explodeOnTimer && Missile == false)
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//{
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// //ResetBullet(transform, impact);
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// Tweener.Kill(true);
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//}
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//else if (Missile == true)
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//{
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// thisCollider.enabled = false;
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// particleKillGroup.SetActive(false);
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// thisRigidbody.velocity = Vector3.zero;
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// //ResetBullet(transform, impact);
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// Tweener.Kill(true);
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//}
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//if (isHitted)
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//{
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// LockTarget = enemy;
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// Hitted();
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// //ResetBullet(transform, impact);
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// //transform.DOKill(true);
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//}
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}
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}
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}
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public Transform InitImpact(Vector3 point, Vector3 toDirection, Transform impact)
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{
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transform.position = point;
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Quaternion rot = Quaternion.FromToRotation(Vector3.forward, toDirection);
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if (impact != null)
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{
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impact.position = point;
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impact.rotation = rot;
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impact.gameObject.SetActive(true);
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return impact;
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}
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return null;
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}
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//void OnCollisionEnter(Collision collision)
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//{
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// if (IsShoting && collision.gameObject.tag != "FX")
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// {
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// ContactPoint contact = collision.contacts[0];
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// Quaternion rot = Quaternion.FromToRotation(Vector3.forward, contact.normal);
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// if (ignorePrevRotation)
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// {
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// rot = Quaternion.Euler(0, 0, 0);
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// }
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// Vector3 pos = contact.point;
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// var impact = Instantiate(impactPrefab, pos, rot);
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// if (!explodeOnTimer && Missile == false)
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// {
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// //ResetBullet(transform, impact.transform);
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// Hitted();
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// }
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// else if (Missile == true)
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// {
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// thisCollider.enabled = false;
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// particleKillGroup.SetActive(false);
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// thisRigidbody.velocity = Vector3.zero;
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// Hitted();
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// //ResetBullet(transform, impact.transform);
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// }
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// }
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//}
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private void Hitted()
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{
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if (IsShoting)
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{
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IsShoting = false;
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Tweener.Complete(true);
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Tweener.Kill();
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}
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}
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void Explode()
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{
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var impact = Instantiate(explosionPrefab, gameObject.transform.position, Quaternion.Euler(0, 0, 0));
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//ResetBullet(transform, impact.transform);
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Hitted();
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}
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/// <summary>
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/// 重置锁定的敌方对象，以及击中的敌方对象
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/// </summary>
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public void ResetEnemyTargets()
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{
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//IsLockedTarget = false;
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HitTarget = null;
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LockTarget = null;
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}
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/// <summary>
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/// 重置当前复用变量状态
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/// </summary>
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public void ResetBullet()
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{
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Tweener = null;
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IsShoting = false;
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currentHitPosition = Vector3.zero;
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IsAutoLock = false;
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ResetEnemyTargets();
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BeforeHitTarget = null;
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_shotTargetPosition = Vector3.zero;
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//currentShotCount = 0;
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//if (isDestroyLimit)
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//{
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// bullet.SetActive(false);
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// Global.ShotBulletQueues[bullet.name.Replace("(Clone)", string.Empty)].Add(bullet.transform);
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//}
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//else
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//{
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// // 指定时间后触发指定方法
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// DOTween.To(() => 0, x => { }, 0, Global.DeathTimer) // 空的补间（仅作为计时器）
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// .OnComplete(() =>
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// {
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// bullet.SetActive(false);
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// Global.ShotBulletQueues[bullet.name.Replace("(Clone)", string.Empty)].Add(bullet.transform);
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// });
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//}
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}
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}
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} |