feat: Implement core game mechanics including player, enemies, bullets, HUD, and level setup.

scripts/turret.gd

@@ -0,0 +1,74 @@
+extends Node2D
+
+@export var rotation_speed: float = 3.0
+@export var bullet_ap_scene: PackedScene = preload("res://scenes/bullet_ap.tscn")
+@export var bullet_he_scene: PackedScene = preload("res://scenes/bullet_he.tscn")
+@export var fire_rate: float = 0.5
+
+@export var max_ammo_ap: int = 20
+@export var max_ammo_he: int = 10
+var ammo_ap: int
+var ammo_he: int
+
+signal ammo_changed(ap, he)
+
+enum AmmoType {AP, HE}
+var current_ammo_type: AmmoType = AmmoType.AP
+
+var can_shoot: bool = true
+
+func _ready():
+	ammo_ap = max_ammo_ap
+	ammo_he = max_ammo_he
+	# Defer emit to ensure connections are ready
+	call_deferred("emit_ammo_signal")
+
+func emit_ammo_signal():
+	ammo_changed.emit(ammo_ap, ammo_he)
+
+func _process(delta):
+	var mouse_pos = get_global_mouse_position()
+	var target_angle = (mouse_pos - global_position).angle()
+
+	# Sanftes Nachdrehen
+	var angle_diff = wrapf(target_angle - global_rotation, -PI, PI)
+	global_rotation += clamp(angle_diff, -rotation_speed * delta, rotation_speed * delta)
+
+	if Input.is_key_pressed(KEY_1):
+		current_ammo_type = AmmoType.AP
+	if Input.is_key_pressed(KEY_2):
+		current_ammo_type = AmmoType.HE
+
+	if Input.is_mouse_button_pressed(MOUSE_BUTTON_LEFT) and can_shoot:
+		shoot()
+
+func shoot():
+	if current_ammo_type == AmmoType.AP:
+		if ammo_ap > 0:
+			ammo_ap -= 1
+		else:
+			return # Out of ammo
+	elif current_ammo_type == AmmoType.HE:
+		if ammo_he > 0:
+			ammo_he -= 1
+		else:
+			return # Out of ammo
+			
+	ammo_changed.emit(ammo_ap, ammo_he)
+
+	var bullet_scene = bullet_ap_scene if current_ammo_type == AmmoType.AP else bullet_he_scene
+	var bullet = bullet_scene.instantiate()
+	get_tree().root.add_child(bullet)
+	bullet.global_position = global_position
+	bullet.global_rotation = global_rotation
+	
+	can_shoot = false
+	await get_tree().create_timer(fire_rate).timeout
+	can_shoot = true
+
+func add_ammo(type_index: int, amount: int):
+	if type_index == 0: # AP
+		ammo_ap += amount
+	elif type_index == 1: # HE
+		ammo_he += amount
+	ammo_changed.emit(ammo_ap, ammo_he)