151 lines
4.5 KiB
C#
151 lines
4.5 KiB
C#
using Cysharp.Threading.Tasks;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading;
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using UnityEngine;
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public class EnemySpawner : MonoBehaviour
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{
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public event Action<EnemyShip> EnemySpawned;
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public List<EnemyShip> EnemyPrefabs;
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[SerializeField] private List<BezierWay> ways;
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[SerializeField] private float SpawnInterval = 5;
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[SerializeField] private int minBudget = 3;
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[SerializeField] private int maxBudget = 100;
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[SerializeField] private int minBudgetScore = 0;
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[SerializeField] private int maxBudgetScore = 5000;
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[SerializeField] private AnimationCurve budgetCurve;
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[SerializeField] private int currentBudget = 0;
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[SerializeField] private int usedBudget = 0;
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[SerializeField] private int maxSpawnedEnemies = 3;
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private CancellationToken _token;
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private int activeEnemies = 0;
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public bool Initialized { get; private set; }
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private int remainingBudget => currentBudget - usedBudget;
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public void Initialize()
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{
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if (Initialized) return;
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if (!Validate())
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{
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Debug.LogError("Валидация настроек спавнера не прошла", this);
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return;
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}
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currentBudget = minBudget;
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usedBudget = 0;
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EnemyShip.ShipReleased += UntouchShipFromBudget;
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EnemyShip.ShipDefeated += UntouchShipFromBudget;
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G.ScoreModel.OnUpdate += UpdateBudgetByScore;
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_token = this.GetCancellationTokenOnDestroy();
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SpawnProcessAsync(_token).Forget();
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Initialized = true;
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}
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private void UntouchShipFromBudget(EnemyShip releasedShip)
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{
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if (releasedShip == null) return;
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usedBudget = Mathf.Max(0, usedBudget - releasedShip.SpawnCost);
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activeEnemies--;
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}
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private void OnDisable()
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{
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if (!Initialized) return;
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EnemyShip.ShipReleased -= UntouchShipFromBudget;
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EnemyShip.ShipDefeated -= UntouchShipFromBudget;
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G.ScoreModel.OnUpdate -= UpdateBudgetByScore;
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}
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private bool Validate()
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{
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if (EnemyPrefabs == null || EnemyPrefabs.Count == 0)
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{
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Debug.LogError("Не задан список врагов на спавнере", this);
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return false;
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}
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foreach (var enemy in EnemyPrefabs)
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{
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if (!enemy.TryGetComponent<EnemyShip>(out _))
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{
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Debug.LogError($"Префаб врага {enemy.name} не содержит компонент AbstractEnemyShip");
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return false;
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}
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}
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return true;
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}
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private async UniTaskVoid SpawnProcessAsync(CancellationToken token)
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{
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while(!token.IsCancellationRequested)
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{
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await UniTask.Yield(PlayerLoopTiming.Update);
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if (!token.IsCancellationRequested)
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TrySpawn();
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await UniTask.Delay(delayTimeSpan: TimeSpan.FromSeconds(SpawnInterval),
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delayTiming: PlayerLoopTiming.Update,
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cancellationToken: token);
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}
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}
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private BezierWay GetNotBusyWay() => ways.FirstOrDefault(way => !way.Busy);
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private EnemyShip GetRandomAccessibleShip()
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{
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var accessibleShips = EnemyPrefabs.Where(e => e.SpawnCost <= remainingBudget).ToList();
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if (accessibleShips.Count == 0) return null;
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var randomIndex = UnityEngine.Random.Range(0, accessibleShips.Count);
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return accessibleShips[randomIndex];
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}
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private EnemyShip GetTopAccessibleShip()
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{
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return EnemyPrefabs
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.Where(e => e.SpawnCost <= remainingBudget)
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.OrderByDescending(e => e.SpawnCost)
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.FirstOrDefault();
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}
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private void TrySpawn()
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{
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if (activeEnemies >= maxSpawnedEnemies) return;
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var way = GetNotBusyWay();
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if(way == null) return;
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//var shipPrefab = GetRandomAccessibleShip();
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var shipPrefab = GetTopAccessibleShip();
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if (shipPrefab == null) return;
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var go = Instantiate(shipPrefab.gameObject, way.FirstPoint.position, Quaternion.identity);
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var ship = go.GetComponent<EnemyShip>();
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ship.AssignToWay(way);
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ship.Initialize();
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EnemySpawned?.Invoke(ship);
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usedBudget += ship.SpawnCost;
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activeEnemies++;
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}
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private void UpdateBudgetByScore(ScoreModel scoreModel)
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{
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float t = Mathf.InverseLerp(minBudgetScore, maxBudgetScore, scoreModel.Score);
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currentBudget = Mathf.RoundToInt(Mathf.Lerp(minBudget, maxBudget, budgetCurve.Evaluate(t)));
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}
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}
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