Add homing missile motion component; update enemy scene to include homing bullet resource

objects/entities/enemy.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=20 format=3 uid="uid://bwdlmualj6xbw"]
+[gd_scene load_steps=21 format=3 uid="uid://bwdlmualj6xbw"]
 
 [ext_resource type="Shader" uid="uid://bs4xvm4qkurpr" path="res://shaders/hit_flash.tres" id="1_ep4yr"]
 [ext_resource type="Texture2D" uid="uid://cu72810eyk4dx" path="res://sprites/enemy-robot.png" id="2_hjtwe"]
@@ -7,6 +7,7 @@
 [ext_resource type="Script" uid="uid://dmqpif5qhvri3" path="res://scripts/components/side_to_side_movement.gd" id="4_gbsq8"]
 [ext_resource type="Script" uid="uid://b37gqnycj6rtk" path="res://scripts/components/periodic_shooting.gd" id="5_m03v0"]
 [ext_resource type="Script" uid="uid://dqm371fysuk7i" path="res://scripts/components/enemy_death.gd" id="6_6p3gr"]
+[ext_resource type="PackedScene" uid="uid://jiv4e82ycwmq" path="res://objects/entities/homing_bullet.tscn" id="7_lvsna"]
 [ext_resource type="Script" uid="uid://dqmbvuutd5c3c" path="res://scripts/components/flashing_component.gd" id="7_xsaiy"]
 [ext_resource type="Script" uid="uid://ceq8n7yw7qxpi" path="res://scripts/components/hit_component.gd" id="9_0qjr4"]
 [ext_resource type="Script" uid="uid://c07d50s20rl8s" path="res://scripts/components/status_effect_component.gd" id="10_5i27q"]
@@ -66,6 +67,7 @@ right_wall_ray = NodePath("../Right Wall Ray")
 
 [node name="PeriodicShootingComponent" type="Node" parent="." node_paths=PackedStringArray("side_to_side_movement", "root", "bullet_spawn_right", "bullet_spawn_left")]
 script = ExtResource("5_m03v0")
+bullet_scene = ExtResource("7_lvsna")
 side_to_side_movement = NodePath("../SideToSideMovement")
 root = NodePath("..")
 bullet_spawn_right = NodePath("../Sprite2D/right bullet spawn")

objects/entities/homing_bullet.tscn

@@ -0,0 +1,80 @@
+[gd_scene load_steps=10 format=3 uid="uid://jiv4e82ycwmq"]
+
+[ext_resource type="Texture2D" uid="uid://djifxc5x0dyrw" path="res://sprites/ppc_tileset.png" id="1_bmfqy"]
+[ext_resource type="Script" uid="uid://dkmxhjtmu5xlb" path="res://scripts/components/damage_component.gd" id="2_id4r8"]
+[ext_resource type="Script" uid="uid://1tnr46o1ib4u" path="res://scripts/components/out_of_screen_component.gd" id="3_2uduj"]
+[ext_resource type="Script" uid="uid://bvsgg8lu0a8m6" path="res://scripts/components/lifetime_component.gd" id="4_x32ji"]
+[ext_resource type="Script" uid="uid://873un8agkyja" path="res://scripts/components/launch_component.gd" id="5_r3id6"]
+[ext_resource type="Script" uid="uid://cdnwrn8v05qhi" path="res://scripts/components/bullet_component.gd" id="7_8gqaa"]
+[ext_resource type="Script" uid="uid://be8jhvb8t3kif" path="res://scripts/components/homing_missile_motion.gd" id="7_bmfqy"]
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_txsw8"]
+radius = 4.0
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_bmfqy"]
+radius = 128.0
+
+[node name="Bullet" type="Area2D"]
+collision_layer = 8
+collision_mask = 21
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("CircleShape2D_txsw8")
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+scale = Vector2(0.5, 0.5)
+texture = ExtResource("1_bmfqy")
+hframes = 12
+vframes = 12
+frame = 79
+
+[node name="VisibleOnScreenNotifier2D" type="VisibleOnScreenNotifier2D" parent="."]
+position = Vector2(2.38419e-07, 2.38419e-07)
+scale = Vector2(0.4, 0.4)
+
+[node name="DamageComponent" type="Node" parent="." node_paths=PackedStringArray("area2d")]
+script = ExtResource("2_id4r8")
+area2d = NodePath("..")
+
+[node name="Timer" type="Timer" parent="."]
+wait_time = 5.0
+autostart = true
+
+[node name="OutOfScreenComponent" type="Node" parent="." node_paths=PackedStringArray("visibility_notifier", "root")]
+script = ExtResource("3_2uduj")
+visibility_notifier = NodePath("../VisibleOnScreenNotifier2D")
+root = NodePath("..")
+
+[node name="LifetimeComponent" type="Node" parent="." node_paths=PackedStringArray("root", "timer")]
+script = ExtResource("4_x32ji")
+root = NodePath("..")
+life_time = 10.0
+timer = NodePath("../Timer")
+
+[node name="LaunchComponent" type="Node2D" parent="." node_paths=PackedStringArray("root")]
+script = ExtResource("5_r3id6")
+root = NodePath("..")
+speed = 120.0
+metadata/_custom_type_script = "uid://873un8agkyja"
+
+[node name="BulletComponent" type="Node" parent="." node_paths=PackedStringArray("root", "area2d")]
+script = ExtResource("7_8gqaa")
+root = NodePath("..")
+area2d = NodePath("..")
+metadata/_custom_type_script = "uid://cdnwrn8v05qhi"
+
+[node name="HomingMissileMotion" type="Node" parent="." node_paths=PackedStringArray("launch_component", "root", "detection_area")]
+script = ExtResource("7_bmfqy")
+launch_component = NodePath("../LaunchComponent")
+root = NodePath("..")
+max_speed = 122.0
+acceleration = 4.0
+detection_area = NodePath("../DetectionArea")
+
+[node name="DetectionArea" type="Area2D" parent="."]
+collision_layer = 0
+collision_mask = 4
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="DetectionArea"]
+shape = SubResource("CircleShape2D_bmfqy")
+debug_color = Color(0.802086, 0.36581, 0.539812, 0.42)

scripts/components/homing_missile_motion.gd

@@ -0,0 +1,60 @@
+class_name HomingMissileMotion
+extends Node
+
+@export var launch_component: LaunchComponent
+@export var root: Node2D
+@export var max_speed: float = 16.0
+@export var acceleration: float = 8.0
+@export var detection_area: Area2D
+@export var max_turn_rate: float = 180.0
+
+var target: Node2D    = null
+var velocity: Vector2 = Vector2.ZERO
+
+
+func _ready() -> void:
+	if not detection_area:
+		printerr("No detection area assigned!")
+		return
+
+	if not launch_component:
+		printerr("No launch component assigned!")
+		return
+
+	detection_area.body_entered.connect(on_detection_area_body_entered)
+	velocity = launch_component.get_initial_velocity()
+
+
+func _physics_process(delta: float) -> void:
+	if not launch_component or not root:
+		return
+
+	if not target:
+		root.position += velocity * delta
+		return
+
+	var to_target       := (target.global_position - root.global_position).normalized()
+	var angle_to_target := velocity.angle_to(to_target)
+	var max_angle       := deg_to_rad(max_turn_rate) * delta
+	var clamped_angle   =  clamp(angle_to_target, - max_angle, max_angle)
+	velocity = velocity.rotated(clamped_angle).normalized() * velocity.length()
+
+	var desired_speed = min(max_speed, velocity.length() + acceleration * delta)
+	velocity = velocity.normalized() * desired_speed
+
+	root.position += velocity * delta
+	root.rotation = velocity.angle()
+
+
+func on_detection_area_body_entered(body: Node) -> void:
+	print("Body entered detection area: ", body.name)
+	if target != null:
+		return
+
+	if body == null:
+		return
+
+	target = body
+	 
+	
+	

scripts/components/homing_missile_motion.gd.uid

@@ -0,0 +1 @@
+uid://be8jhvb8t3kif