Autonomous bullet life system

Scripts/AttackPatterns/AutonomousBulletEmitter.cs

@@ -0,0 +1,74 @@
+using Cirno.Scripts.Resources;
+using Godot;
+
+namespace Cirno.Scripts.AttackPatterns;
+
+public partial class AutonomousBulletEmitter : Node2D, IScriptHost
+{
+    [Export]
+    public BulletScript Script { get; set; }
+    [Export]
+    public bool EmitOnStart { get; set; } = false;
+    
+    [Signal] public delegate void DeathEventHandler();
+
+    public double LifeTime { get; set; } = 0d;
+
+    private double _lifeCounter = 0d;
+    
+    private bool _isActive = false;
+
+    public bool Autonomous { get; set; } = true;
+    
+    protected BulletScript.BulletScriptMachine ScriptMachine;
+    private Vector2 _homePosition;
+    public Vector2 HomePosition => _homePosition;
+    public void Start()
+    {
+        ScriptMachine = Script.Make(this);
+        
+        _homePosition = this.GlobalPosition;
+        
+        if (EmitOnStart)
+        {
+            _isActive = true;
+            ScriptMachine.Start();
+        }
+
+    }
+
+    public override void _Process(double delta)
+    {
+        if (!Autonomous) return;
+        if (!_isActive) return;
+        //this.GlobalPosition += new Vector2(10 * (float)delta, 0);
+        Process(delta);
+    }
+
+    public void Update(double delta)
+    {
+        if (Autonomous) return;
+        if (!_isActive) return;
+        
+        Process(delta);
+    }
+
+    private void Process(double delta)
+    {
+        _lifeCounter += delta;
+        if (_lifeCounter >= LifeTime)
+        {
+            _isActive = false;
+            EmitSignalDeath();
+            QueueFree();
+            return;
+        }
+        ScriptMachine.UpdatePhase(delta);
+    }
+    
+    public void ChangeSpriteDirection(Vector2 direction)
+    {
+        
+    }
+    
+}

Scripts/AttackPatterns/AutonomousBulletEmitter.cs.uid

@@ -0,0 +1 @@
+uid://bvp1fwdtx2bri

Scripts/AttackPatterns/CreateEmitterPattern.cs

@@ -0,0 +1,70 @@
+using Cirno.Scripts.Actors;
+using Cirno.Scripts.Resources;
+using Godot;
+using Godot.Collections;
+
+namespace Cirno.Scripts.AttackPatterns;
+
+[GlobalClass]
+public partial class CreateEmitterPattern : AttackPattern
+{
+    [Export] public Vector2 SpawnOffset { get; set; }
+    [Export] public BulletScript Script { get; set; }
+    [Export] public PackedScene Prefab { get; set; }
+    [Export] public bool CreateAsChild { get; set; }
+
+    [Export] public double LifeTime { get; set; } = 10d;
+
+    public override IPatternMachine MakeMachine(Node2D parent)
+    {
+        return new EmitterPatternMachine(this, parent);
+    }
+
+    public class EmitterPatternMachine(CreateEmitterPattern pattern, Node2D parent) : IPatternMachine
+    {
+        private bool _active = false;
+        public Node2D Parent => parent;
+        public AutonomousBulletEmitter Emitter { get; private set; }
+
+        public void Start()
+        {
+            Emitter = pattern.CreateAsChild
+                ? parent.CreateChild<AutonomousBulletEmitter>(pattern.Prefab, parent.GlobalPosition + pattern.SpawnOffset)
+                : parent.CreateSibling<AutonomousBulletEmitter>(pattern.Prefab, parent.GlobalPosition + pattern.SpawnOffset);
+            Emitter.Script = pattern.Script;
+            Emitter.EmitOnStart = true;
+            Emitter.LifeTime = pattern.LifeTime;
+            
+            _active = true;
+            Emitter.Autonomous = !pattern.WaitForCompletion;
+            
+            Emitter.Death += EmitterOnDeath;
+            
+            Emitter.Start();
+        }
+
+        private void EmitterOnDeath()
+        {
+            _active = false;
+        }
+
+        public void UpdatePattern(double delta)
+        {
+            if (_active)
+            {
+                if (pattern.WaitForCompletion)
+                {
+                    Emitter.Update(delta);
+                }
+            }
+           
+        }
+
+        public bool IsComplete()
+        {
+            if (pattern.WaitForCompletion) 
+                return !_active;
+            return _active;
+        }
+    }
+}

Scripts/AttackPatterns/CreateEmitterPattern.cs.uid

@@ -0,0 +1 @@
+uid://ca6atry8iniub