Danmaku system

Scripts/AttackPatterns/TargetedPattern.cs

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+using Cirno.Scripts.Actors;
+using Cirno.Scripts.Components;
+using Cirno.Scripts.Resources;
+
+namespace Cirno.Scripts.AttackPatterns;
+
+using Godot;
+
+[GlobalClass]
+public partial class TargetedPattern : AttackPattern
+{
+    [Export] public PackedScene BulletScene;
+    
+    [Export] private float bulletSpeed = 5f;
+    [Export] private float duration = 3f;
+    [Export] private float burstInterval = 0.5f;
+    [Export] private int bulletsPerShot = 1;
+    [Export] private float spread = 0f;
+    [Export] private BulletOwner owner = BulletOwner.Enemy;
+    [Export] private Resource modifier;
+
+    private double timer;
+    private double burstTimer;
+    private BulletSpawner spawner;
+    //private Node2D player;
+    private GameManager _gameManager;
+    
+    public override void Start(Boss boss)
+    {
+        _gameManager = boss.GetNode<GameManager>("/root/GameScene");
+        
+        Boss = boss;
+        timer = 0;
+        burstTimer = 0;
+        spawner = boss.GetNode<BulletSpawner>("BulletSpawner");
+        
+    }
+
+    public override void UpdatePattern(double delta)
+    {
+        timer += delta;
+        burstTimer += delta;
+        if (timer < duration && burstTimer >= burstInterval && _gameManager.PlayerPosition.HasValue)
+        {
+            spawner.SpawnTargetedBullet(Boss.GlobalPosition, _gameManager.PlayerPosition.Value, bulletSpeed, owner, BulletScene, bulletsPerShot, spread, modifier as IBulletModifier);
+            burstTimer = 0;
+        }
+    }
+
+    public override bool IsComplete()
+    {
+        return timer >= duration;
+    }
+}