OldBlueWater/BlueWater/Assets/02.Scripts/Fish.cs

using System;
using System.Collections;
using Sirenix.OdinInspector;
using UnityEngine;

// ReSharper disable once CheckNamespace
namespace BlueWaterProject
{
    public enum EscapeMode
    {
        NONE = -1,
        STRAIGHT,
        ZIGZAG,
        TOWARDS
    }
    
    public class Fish : MonoBehaviour
    {
        // 초기화 방식
        [Title("초기화 방식")]
        [SerializeField] private bool autoInit = true;
        
        // 물고기의 기본 설정
        [Title("물고기의 기본 설정")]
        [SerializeField] private bool isDrawGizmos = true;
        
        [Tooltip("타겟 인식 범위")]
        [SerializeField] private float viewRadius = 10f;
        
        [Tooltip("이동속도")]
        [SerializeField] private float moveSpd = 500f;
        
        [Tooltip("회전속도")]
        [SerializeField] private float rotationSpeed = 10f;
        
        [Tooltip("랜덤 방향으로 도주 여부")]
        [SerializeField] private bool isRandomAngle = true;
        
        [ShowIf("@isRandomAngle")]
        [Tooltip("도망가는 방향의 랜덤 각도")]
        [SerializeField] private float randomAngle = 180f;
        
        [Tooltip("타겟을 재검색하는 시간")]
        [SerializeField] private float rescanTime = 0.5f;
        
        [Tooltip("도망가는 시간")]
        [SerializeField] private float escapeTime = 10f;
        
        [Tooltip("리스폰 여부")]
        [SerializeField] private bool isRespawn = true;
        
        [ShowIf("@isRespawn == true")]
        [Tooltip("리스폰되는데 걸리는 시간")]
        [SerializeField] private float respawnTime = 5f;
        
        [Tooltip("도망치면서 랜덤 방향 전환 여부")]
        [SerializeField] private bool randomDirectionChange;
        
        [ShowIf("@!randomDirectionChange")]
        [Tooltip("도망치면서 방향 전환하는데 걸리는 시간")]
        [SerializeField] private float directionChangeInterval = 1f;
        
        [ShowIf("@randomDirectionChange")]
        [Tooltip("도망치면서 방향 전환하는데 걸리는 랜덤 최소 시간")]
        [SerializeField] private float minDirectionChangeInterval = 0.1f;
        
        [ShowIf("@randomDirectionChange")]
        [Tooltip("도망치면서 방향 전환하는데 걸리는 랜덤 최대 시간")]
        [SerializeField] private float maxDirectionChangeInterval = 1f;
        
        [Tooltip("도주 방식")]
        [SerializeField] private EscapeMode escapeMode = EscapeMode.STRAIGHT;
        
        // ZIGZAG
        [Title("ZIGZAG")]
        [ShowIf("@escapeMode == EscapeMode.ZIGZAG")]
        [Tooltip("흔들림의 정도")]
        [SerializeField] private bool randomZigzag;
        
        [ShowIf("@escapeMode == EscapeMode.ZIGZAG && !randomZigzag")]
        [Tooltip("흔들림의 정도")]
        [SerializeField] private float zigzagAmplitude = 1f;
        
        [ShowIf("@escapeMode == EscapeMode.ZIGZAG && !randomZigzag")]
        [Tooltip("흔들림의 주기")]
        [SerializeField] private float zigzagFrequency = 1f;
        
        [ShowIf("@escapeMode == EscapeMode.ZIGZAG && randomZigzag")]
        [Tooltip("흔들림의 정도 랜덤 최솟값")]
        [SerializeField] private float minZigzagAmplitude = 0.1f;
        
        [ShowIf("@escapeMode == EscapeMode.ZIGZAG && randomZigzag")]
        [Tooltip("흔들림의 정도 랜덤 최댓값")]
        [SerializeField] private float maxZigzagAmplitude = 1f;
        
        [Space]
        [ShowIf("@escapeMode == EscapeMode.ZIGZAG && randomZigzag")]
        [Tooltip("흔들림의 주기 랜덤 최솟값")]
        [SerializeField] private float minZigzagFrequency = 0.1f;
        
        [ShowIf("@escapeMode == EscapeMode.ZIGZAG && randomZigzag")]
        [Tooltip("흔들림의 주기 랜덤 최댓값")]
        [SerializeField] private float maxZigzagFrequency = 1f;
        
        // 디버깅
        [Title("디버깅")]
        [SerializeField] private Collider[] hitColliders = new Collider[MAX_HIT_NUM];
        [SerializeField] private LayerMask targetLayer;

        private Rigidbody rb;
        private Coroutine findTargetCoroutine;
        private Coroutine escapeCoroutine;
        private WaitForSeconds findCoroutineTime;
        private Vector3 spawnPos;

        private const int MAX_HIT_NUM = 3;

        private void OnValidate()
        {
            findCoroutineTime = new WaitForSeconds(rescanTime);
        }

        private void OnDrawGizmosSelected()
        {
            if (!isDrawGizmos) return;
            
            Gizmos.color = Color.red;
            Gizmos.DrawWireSphere(transform.position, viewRadius);
        }

        [Button("셋팅 초기화")]
        private void Init()
        {
            rb = GetComponent<Rigidbody>();
            
            targetLayer = LayerMask.GetMask("Player");
        }

        #region Preset

        [HorizontalGroup("Split")]
        [Button("프리셋 1번")]
        private void Preset1()
        {
            isDrawGizmos = true;
            viewRadius = 20f;
            moveSpd = 500f;
            rotationSpeed = 10f;
            isRandomAngle = false;
            rescanTime = 0.5f;
            escapeTime = 10f;
            isRespawn = true;
            respawnTime = 5f;
            randomDirectionChange = false;
            directionChangeInterval = 3f;
            escapeMode = EscapeMode.STRAIGHT;
        }
        
        [HorizontalGroup("Split")]
        [Button("프리셋 2번")]
        private void Preset2()
        {
            isDrawGizmos = true;
            viewRadius = 20f;
            moveSpd = 500f;
            rotationSpeed = 10f;
            isRandomAngle = true;
            randomAngle = 120f;
            rescanTime = 0.5f;
            escapeTime = 10f;
            isRespawn = true;
            respawnTime = 5f;
            randomDirectionChange = true;
            minDirectionChangeInterval = 1f;
            maxDirectionChangeInterval = 3f;
            directionChangeInterval = 3f;
            escapeMode = EscapeMode.ZIGZAG;
            randomZigzag = false;
            zigzagAmplitude = 0.5f;
            zigzagFrequency = 1f;
        }
        
        [HorizontalGroup("Split")]
        [Button("프리셋 3번")]
        private void Preset3()
        {
            isDrawGizmos = true;
            viewRadius = 20f;
            moveSpd = 500f;
            rotationSpeed = 10f;
            isRandomAngle = true;
            randomAngle = 120f;
            rescanTime = 0.5f;
            escapeTime = 10f;
            isRespawn = true;
            respawnTime = 5f;
            randomDirectionChange = true;
            minDirectionChangeInterval = 1f;
            maxDirectionChangeInterval = 3f;
            directionChangeInterval = 3f;
            escapeMode = EscapeMode.ZIGZAG;
            randomZigzag = true;
            minZigzagAmplitude = 0.1f;
            maxZigzagAmplitude = 2f;
            minZigzagFrequency = 0.1f;
            maxZigzagFrequency = 2f;
        }

        #endregion

        private void Awake()
        {
            if (autoInit)
            {
                Init();
            }
        }
        
        private void OnEnable()
        {
            hitColliders = new Collider[MAX_HIT_NUM];
            findCoroutineTime = new WaitForSeconds(rescanTime);
            
            if (findTargetCoroutine != null) return;
            
            findTargetCoroutine = StartCoroutine(FindTargetCoroutine());
        }
        
        private void Start()
        {
            spawnPos = transform.position;
        }

        private IEnumerator FindTargetCoroutine()
        {
            while (true)
            {
                var size = Physics.OverlapSphereNonAlloc(transform.position, viewRadius, hitColliders, targetLayer);
                for (var i = 0; i < size; i++)
                {
                    var hitCollider = hitColliders[i];
                    if (hitCollider == null || !hitCollider.CompareTag("ShipPlayer")) continue;

                    findTargetCoroutine = null;
                    escapeCoroutine = StartCoroutine(EscapeCoroutine(hitCollider));
                    yield break;
                }
                yield return findCoroutineTime;
            }
        }
        
        private IEnumerator EscapeCoroutine(Collider targetCollider)
        {
            var currentDirectionChangeInterval = randomDirectionChange ?
                UnityEngine.Random.Range(minDirectionChangeInterval, maxDirectionChangeInterval)
                : directionChangeInterval;
            var rotatedEscapeDirection = CalculateEscapeDirection(targetCollider.transform.position);
            
            var time = 0f;
            var directionChangeTime = 0f;
            while (time < escapeTime)
            {
                time += Time.deltaTime;
                directionChangeTime += Time.deltaTime;

                if (directionChangeTime >= currentDirectionChangeInterval)
                {
                    rotatedEscapeDirection = CalculateEscapeDirection(targetCollider.transform.position);
                    directionChangeTime = 0f;
                    currentDirectionChangeInterval = randomDirectionChange ?
                        UnityEngine.Random.Range(minDirectionChangeInterval, maxDirectionChangeInterval)
                        : directionChangeInterval;
                    
                    if (escapeMode == EscapeMode.ZIGZAG && randomZigzag)
                    {
                        zigzagFrequency = UnityEngine.Random.Range(minZigzagFrequency, maxZigzagFrequency);
                        zigzagAmplitude = UnityEngine.Random.Range(minZigzagAmplitude, maxZigzagAmplitude);
                    }
                }
                
                var newDirection = escapeMode switch
                {
                    EscapeMode.NONE => throw new ArgumentOutOfRangeException(),
                    EscapeMode.STRAIGHT => rotatedEscapeDirection,
                    EscapeMode.ZIGZAG => rotatedEscapeDirection +
                                         new Vector3(Mathf.Sin(Time.time * zigzagFrequency) * zigzagAmplitude,0,
                                             Mathf.Sin(Time.time * zigzagFrequency) * zigzagAmplitude),
                    EscapeMode.TOWARDS => -rotatedEscapeDirection,
                    _ => throw new ArgumentOutOfRangeException()
                };

                rb.velocity = newDirection.normalized * (moveSpd * Time.deltaTime);
                var targetRotation = Quaternion.LookRotation(newDirection);
                transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, rotationSpeed * Time.deltaTime);

                yield return null;
            }

            rb.velocity = Vector3.zero;
            escapeCoroutine = null;

            if (isRespawn)
            {
                FishManager.Inst.RespawnFish(gameObject, respawnTime, spawnPos);
            }
            gameObject.SetActive(false);
        }
        
        private Vector3 CalculateEscapeDirection(Vector3 targetPos)
        {
            var escapeDirection = (transform.position - targetPos).normalized;
            escapeDirection.y = 0;

            if (!isRandomAngle) return escapeDirection;
            
            var randomRotationAngle = UnityEngine.Random.Range(-randomAngle * 0.5f, randomAngle * 0.5f);
            var rotation = Quaternion.Euler(0, randomRotationAngle, 0);
            return rotation * escapeDirection;

        }
    }
}