Rotating turret NPC

Cirno.csproj

@@ -14,4 +14,7 @@
     <Content Include="Publish.ps1" />
     <Content Include="Scripts\Resources\Events\tsconfig.json" />
   </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Scripts\Components\FSM\Enemy\" />
+  </ItemGroup>
 </Project>

Scenes/Actors/Camera.tscn

@@ -34,7 +34,6 @@ collision_layer = 16
 collision_mask = 2
 script = ExtResource("3_ax0x5")
 SweepSpeed = 10.0
-Debug = true
 SpritePath = NodePath("../AnimatedSprite2D")
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="PlayerDetection"]

Scenes/Actors/Turret360.tscn

@@ -0,0 +1,169 @@
+[gd_scene load_steps=28 format=3 uid="uid://bjskkeb3ppcs8"]
+
+[ext_resource type="Script" uid="uid://c2mo5hc1qb6kf" path="res://Scripts/Components/Actors/Actor.cs" id="1_g7c56"]
+[ext_resource type="Texture2D" uid="uid://ke3ialixybfn" path="res://Sprites/Actors/Turret360.png" id="2_g7c56"]
+[ext_resource type="Script" uid="uid://tk6ytw246ubg" path="res://Scripts/Components/Actors/EnemyPossessionMovement.cs" id="3_kuwnw"]
+[ext_resource type="Script" uid="uid://dq338w2lw5phl" path="res://Scripts/Components/Actors/KeyboardInputProvider.cs" id="4_m663r"]
+[ext_resource type="Script" uid="uid://daoxbq4sxy0br" path="res://Scripts/Components/Actors/TurretAnimationModule.cs" id="5_g7c56"]
+[ext_resource type="Script" uid="uid://ghq0lmohdvqf" path="res://Scripts/Components/Actors/ActorAi.cs" id="6_5eesc"]
+[ext_resource type="Script" uid="uid://c4qmuxjhheahr" path="res://Scripts/Components/ProximityPlayerDetection.cs" id="8_ktwe0"]
+[ext_resource type="Script" uid="uid://cqwvssstkrdmw" path="res://Scripts/Components/Actors/ActorResourceProvider.cs" id="9_pyymf"]
+[ext_resource type="PackedScene" uid="uid://cj63k0dmk7tl1" path="res://Scenes/Weapons/enemy_weapon_base.tscn" id="10_k6dxy"]
+[ext_resource type="Resource" uid="uid://cdfmedtgp2rcn" path="res://Resources/Weapons/EnemyWeapon.tres" id="11_7jc33"]
+[ext_resource type="Script" uid="uid://2cijskgyt2xb" path="res://Scripts/Components/Actors/DamageReceiverActorModule.cs" id="12_04r4v"]
+[ext_resource type="Script" uid="uid://m0ag88kn0c40" path="res://Scripts/Components/Actors/DeathAnimationHandler.cs" id="13_ufa2c"]
+[ext_resource type="Resource" uid="uid://dk2rbf88a5irh" path="res://Resources/Bullets/Explosion_Harmless.tres" id="14_jal4w"]
+[ext_resource type="Script" uid="uid://b0qcrs74bdqhf" path="res://Scripts/Components/Actors/EnemyTurretRotationMovement.cs" id="15_g7c56"]
+[ext_resource type="Script" uid="uid://7g3luecewcp5" path="res://Scripts/Components/Actors/ActorDefeatScriptHandler.cs" id="15_n6k45"]
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_x4kwn"]
+atlas = ExtResource("2_g7c56")
+region = Rect2(0, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_kuwnw"]
+atlas = ExtResource("2_g7c56")
+region = Rect2(16, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_m663r"]
+atlas = ExtResource("2_g7c56")
+region = Rect2(32, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_84800"]
+atlas = ExtResource("2_g7c56")
+region = Rect2(48, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_5eesc"]
+atlas = ExtResource("2_g7c56")
+region = Rect2(64, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_hjdpo"]
+atlas = ExtResource("2_g7c56")
+region = Rect2(80, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_ktwe0"]
+atlas = ExtResource("2_g7c56")
+region = Rect2(96, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_pyymf"]
+atlas = ExtResource("2_g7c56")
+region = Rect2(112, 0, 16, 16)
+
+[sub_resource type="SpriteFrames" id="SpriteFrames_k6dxy"]
+animations = [{
+"frames": [{
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_x4kwn")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_kuwnw")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_m663r")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_84800")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_5eesc")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_hjdpo")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_ktwe0")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_pyymf")
+}],
+"loop": true,
+"name": &"default",
+"speed": 5.0
+}]
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_2b36v"]
+radius = 5.0
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_sthwe"]
+radius = 85.0529
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_0tkae"]
+radius = 5.09902
+
+[node name="Turret360" type="CharacterBody2D"]
+collision_layer = 16
+collision_mask = 113
+script = ExtResource("1_g7c56")
+MovementSpeed = 30.0
+Health = 6.0
+
+[node name="AnimatedSprite2D" type="AnimatedSprite2D" parent="."]
+sprite_frames = SubResource("SpriteFrames_k6dxy")
+frame = 2
+frame_progress = 0.534265
+
+[node name="MovementProvider" type="Node2D" parent="." node_paths=PackedStringArray("DamageReceiver", "EquippedWeapon")]
+script = ExtResource("3_kuwnw")
+DamageReceiver = NodePath("../DamageReceiver")
+EquippedWeapon = NodePath("../EnemyWeapon")
+
+[node name="InputProvider" type="Node2D" parent="MovementProvider"]
+script = ExtResource("4_m663r")
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("CircleShape2D_2b36v")
+
+[node name="AnimationHandler" type="Node2D" parent="." node_paths=PackedStringArray("TurretSprite")]
+script = ExtResource("5_g7c56")
+TurretSprite = NodePath("../AnimatedSprite2D")
+RotationOffset = -90.0
+InvertRotation = true
+
+[node name="ActorAi" type="Node2D" parent="."]
+script = ExtResource("6_5eesc")
+Ai = 0
+
+[node name="PlayerDetection" type="Area2D" parent="."]
+visible = false
+collision_layer = 0
+collision_mask = 2
+script = ExtResource("8_ktwe0")
+
+[node name="PlayerDetectionArea" type="CollisionShape2D" parent="PlayerDetection"]
+shape = SubResource("CircleShape2D_sthwe")
+
+[node name="HealthProvider" type="Node2D" parent="."]
+script = ExtResource("9_pyymf")
+ResourceName = "Health"
+MaxResource = 6.0
+
+[node name="EnemyWeapon" parent="." instance=ExtResource("10_k6dxy")]
+WeaponData = ExtResource("11_7jc33")
+
+[node name="DamageReceiver" type="Node2D" parent="." node_paths=PackedStringArray("HealthProvider")]
+script = ExtResource("12_04r4v")
+HealthProvider = NodePath("../HealthProvider")
+BulletGroup = 2
+
+[node name="Area2D" type="Area2D" parent="DamageReceiver"]
+collision_layer = 16
+collision_mask = 8
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="DamageReceiver/Area2D"]
+shape = SubResource("CircleShape2D_0tkae")
+
+[node name="DeathAnimation" type="Node2D" parent="."]
+script = ExtResource("13_ufa2c")
+ExplosionData = ExtResource("14_jal4w")
+
+[node name="DefeatScriptHandler" type="Node2D" parent="."]
+script = ExtResource("15_n6k45")
+
+[node name="TurretRotationHandler" type="Node2D" parent="." node_paths=PackedStringArray("EquippedWeapon", "_playerDetection")]
+script = ExtResource("15_g7c56")
+CollisionMask = 81
+EquippedWeapon = NodePath("../EnemyWeapon")
+_playerDetection = NodePath("../PlayerDetection")
+
+[connection signal="area_entered" from="PlayerDetection" to="PlayerDetection" method="_on_area_entered"]
+[connection signal="area_exited" from="PlayerDetection" to="PlayerDetection" method="_on_area_exited"]
+[connection signal="area_entered" from="DamageReceiver/Area2D" to="DamageReceiver" method="_on_damage_hitbox_area_entered"]

Scripts/Components/Actors/ActorFreeMovement.cs

@@ -17,7 +17,7 @@ public partial class ActorFreeMovement : MovementHandler
         set => _parent.MovementDirection = value;
     }
     
-    [Export] public string StrafeAction { get; private set; } = "strafe";
+    [Export] public StringName StrafeAction { get; private set; } = "strafe";
     
     public bool IsDestroyed => _parent.IsDestroyed;
 

Scripts/Components/Actors/EnemyPossessionMovement.cs

@@ -12,9 +12,9 @@ public partial class EnemyPossessionMovement : ActorFreeMovement
     [Export]
     public AnimatedSprite2D PossessionSprite { get; private set; }
 
-    [Export] public string ControlEndAction { get; private set; } = "pause";
+    [Export] public StringName ControlEndAction { get; private set; } = "pause";
 
-    [Export] public string ShootAction { get; private set; } = "shoot";
+    [Export] public StringName ShootAction { get; private set; } = "shoot";
     
     [Export] public DamageReceiverActorModule DamageReceiver { get; private set; }
     

Scripts/Components/Actors/EnemyTurretRotationMovement.cs

@@ -0,0 +1,98 @@
+using Godot;
+
+namespace Cirno.Scripts.Components.Actors;
+
+public partial class EnemyTurretRotationMovement : MovementHandler
+{
+    public override Vector2 MovementDirection
+    {
+        get => _parent.MovementDirection;
+        set => _parent.MovementDirection = value;
+    }
+    public override Vector2 FacingDirection
+    {
+        get => _parent.FacingDirection;
+        set => _parent.FacingDirection = value;
+    }
+    
+    [Export] public float PlayerDisengageRange = 500f;
+
+    [Export(PropertyHint.Layers2DPhysics)]
+    public uint CollisionMask { get; set; }
+    
+    public bool IsDestroyed => _parent.IsDestroyed;
+    
+    [Export] public Weapon EquippedWeapon;
+    
+    [Export] private PlayerDetection _playerDetection;
+    
+    private Vector2? _lastPlayerPosition = null;
+    
+    private ActorAi _actorAi;
+    
+    private bool IsPlayerInRange => _playerDetection is { IsPlayerInRange: true };
+
+    private bool IsPlayerInSight =>
+        _playerDetection is not null && _playerDetection.IsPlayerInSight(CollisionMask);
+    
+    public override void Init(Actor parent)
+    {
+        base.Init(parent);
+
+        MovementDirection = Vector2.Zero;
+        FacingDirection = Vector2.Down;
+
+        _actorAi = parent.GetNode<ActorAi>("ActorAi");
+        
+    }
+    
+    public override void Update(double delta)
+    {
+        
+    }
+
+    public override void PhysicsUpdate(double delta)
+    {
+        if (IsDestroyed) return;
+        if (_actorAi.Ai is not AiState.Enabled)
+            return;
+        
+        switch (_actorAi.State)
+        {
+            case EnemyState.Idle:
+                if (_playerDetection != null && IsPlayerInSight)
+                {
+                    _actorAi.State = EnemyState.Alert;
+                    GD.Print("Switching to alert");
+                }
+
+                break;
+            case EnemyState.Alert:
+
+                // Update last known player position if it's in range
+                if (IsPlayerInRange)
+                {
+                    _lastPlayerPosition = _playerDetection.CachedPlayer.GlobalPosition;
+                }
+                
+                if (IsPlayerInSight)
+                {
+                    Shoot();
+                }
+                break;
+        }
+    }
+
+    private void Shoot()
+    {
+        if (EquippedWeapon == null || !_lastPlayerPosition.HasValue) return;
+        
+        var direction = (_lastPlayerPosition.Value - _parent.GlobalPosition).Normalized();
+        
+        // Shoot at the player's last known position
+        EquippedWeapon.ShootDirection = direction;
+        FacingDirection = direction;
+        
+        EquippedWeapon.Shoot();
+    }
+}

Scripts/Components/Actors/EnemyTurretRotationMovement.cs.uid

@@ -0,0 +1 @@
+uid://b0qcrs74bdqhf

Scripts/Components/Actors/TurretAnimationModule.cs

@@ -0,0 +1,59 @@
+using Godot;
+using System;
+
+namespace Cirno.Scripts.Components.Actors;
+public partial class TurretAnimationModule : ActorModule
+{
+    [Export] public AnimatedSprite2D TurretSprite;
+    [Export(PropertyHint.None, "suffix:°")] public float SweepAngle = 360f;
+    [Export(PropertyHint.None, "suffix:°")] public float RotationOffset = 0f;
+    [Export]
+    public bool InvertRotation = false;
+    
+    private int _frameCount;
+    private float _anglePerFrame;
+    
+    private Actor _actor;
+    
+    public override void Init(Actor actor)
+    {
+        _actor = actor;
+        if (TurretSprite == null)
+        {
+            GD.PushError("TurretAnimationModule requires an AnimatedSprite2D reference.");
+            return;
+        }
+        
+        _frameCount = TurretSprite.SpriteFrames.GetFrameCount(TurretSprite.Animation);
+        if (_frameCount == 0)
+        {
+            GD.PushError("TurretAnimatedSprite2D has no frames in the selected animation.");
+            return;
+        }
+        
+        _anglePerFrame = SweepAngle / _frameCount;
+    }
+    
+    public override void Update(double delta) { }
+    
+    public override void PhysicsUpdate(double delta)
+    {
+        if (TurretSprite == null || _frameCount == 0) return;
+
+        Vector2 facingDirection = _actor.FacingDirection;
+        float angle = Mathf.RadToDeg(facingDirection.Angle()) + RotationOffset;
+        
+        if (InvertRotation)
+        {
+            angle = -angle;
+        }
+        
+        if (SweepAngle < 360f)
+        {
+            angle = Mathf.Clamp(angle, -SweepAngle / 2, SweepAngle / 2);
+        }
+        
+        int frame = Mathf.Wrap((int)Mathf.Round(angle / _anglePerFrame), 0, _frameCount);
+        TurretSprite.Frame = frame;
+    }
+}

Scripts/Components/Actors/TurretAnimationModule.cs.uid

@@ -0,0 +1 @@
+uid://daoxbq4sxy0br

Sprites/Actors/Turret360.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://ke3ialixybfn"
+path="res://.godot/imported/Turret360.png-7b7c8fc50f1010b166d70e33da026286.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://Sprites/Actors/Turret360.png"
+dest_files=["res://.godot/imported/Turret360.png-7b7c8fc50f1010b166d70e33da026286.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1