feat: Implement enemy spawning and movement logic in the level manager

managers/level_manager.gd

@@ -3,6 +3,8 @@
 # Responsible for generating, painting, and initializing the level, as well as providing pathfinding and coordinate helpers.
 extends Node
 
+const ENEMY_SCENE_PATH: String = "res://scenes/actors/enemy.tscn"
+
 # The source of truth for the current level's layout (MapData resource).
 var _data: MapData
 # The TileMapLayer node where the map is visually rendered.
@@ -18,8 +20,8 @@ var _pathfinding: PathfindingHandler = PathfindingHandler.new()
 # 1. Generates the map data.
 # 2. Paints the map visually.
 # 3. Builds the navigation graph for AI/pathfinding.
-# 4. Spawns the player at the correct location.
+ # 4. Spawns the player at the correct location.
-func initialize(settings: MapSettings, layer: TileMapLayer, player: CharacterBody2D) -> void:
+func initialize(settings: MapSettings, layer: TileMapLayer, player: Player) -> void:
 	_layer = layer
 
 	# 1. Generate the abstract map data (rooms, corridors, etc.).
@@ -38,6 +40,19 @@ func initialize(settings: MapSettings, layer: TileMapLayer, player: CharacterBod
 	# Uses the TileMapLayer to convert grid coordinates to world pixel positions.
 	player.position = _layer.map_to_local(_data.spawn_point)
 
+	# 5. Spawn one enemy per room, skipping the player's spawn room (index 0).
+	var enemy_scene := load(ENEMY_SCENE_PATH) as PackedScene
+	var world_node := player.get_parent()
+	for i in range(1, _data.rooms.size()):
+		var enemy_instance = enemy_scene.instantiate()
+		var enemy = enemy_instance as Enemy
+		if enemy == null:
+			push_error("Failed to cast enemy instance to Enemy at room index %d" % i)
+			continue
+		enemy._player = player
+		world_node.add_child(enemy)
+		enemy.position = _layer.map_to_local(_data.rooms[i].get_center())
+
 # Public API for other systems (like AI) to query the navigation grid.
 # Encapsulates the PathfindingHandler so callers don't need to know about it directly.
 func find_path(from: Vector2i, to: Vector2i) -> Array[Vector2i]:

scenes/actors/enemy.tscn

@@ -1,13 +1,13 @@
 [gd_scene format=3 uid="uid://hwbs3q16spqx"]
 
-[ext_resource type="Script" uid="uid://dh5hx2lospkug" path="res://scripts/actors/character.gd" id="1_4i4j6"]
+[ext_resource type="Script" uid="uid://lm82h1fj2mbp" path="res://scripts/actors/enemy.gd" id="1_qkj82"]
 [ext_resource type="Texture2D" uid="uid://b7s06o6gm42rn" path="res://assets/sprites/icon.svg" id="2_qkj82"]
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_35asm"]
 size = Vector2(32, 32)
 
 [node name="Enemy" type="CharacterBody2D" unique_id=1059490557]
-script = ExtResource("1_4i4j6")
+script = ExtResource("1_qkj82")
 metadata/_custom_type_script = "uid://dh5hx2lospkug"
 
 [node name="Sprite2D" type="Sprite2D" parent="." unique_id=569576189]

scripts/actors/enemy.gd

@@ -0,0 +1,53 @@
+## enemy.gd
+# Enemy character script. Each turn, chases the player one tile using pathfinding.
+class_name Enemy
+extends Character
+
+# Movement speed in pixels per second.
+const SPEED: float = 200.0
+# Distance threshold for snapping to a tile (prevents jitter).
+const ARRIVAL_THRESHOLD: float = 4.0
+
+# Reference to the player — set by LevelManager after spawning.
+var _player: Player
+# True while animating toward _move_target.
+var _is_moving: bool = false
+# World position of the tile this enemy is stepping toward.
+var _move_target: Vector2 = Vector2.ZERO
+
+
+# Called by TurnManager. Pathfinds to the player and steps one tile closer.
+func take_turn() -> void:
+	var my_tile := LevelManager.world_to_tile(position)
+	var player_tile := LevelManager.world_to_tile(_player.position)
+	var path := LevelManager.find_path(my_tile, player_tile)
+	# path[0] is own tile; path[-1] is the player's tile (don't step there).
+	if path.size() < 2:
+		turn_finished.emit()
+		return
+	# Stop one tile away from the player — don't overlap.
+	if path.size() == 2:
+		turn_finished.emit()
+		return
+	_move_target = LevelManager.tile_to_world(path[1])
+	_is_moving = true
+
+
+# Glides toward _move_target each frame. Emits turn_finished on arrival.
+func _physics_process(_delta: float) -> void:
+	if not _is_moving:
+		velocity = Vector2.ZERO
+		move_and_slide()
+		return
+
+	var to_target: Vector2 = _move_target - position
+
+	if to_target.length() < ARRIVAL_THRESHOLD:
+		position = _move_target
+		velocity = Vector2.ZERO
+		move_and_slide()
+		_is_moving = false
+		turn_finished.emit()
+	else:
+		velocity = to_target.normalized() * SPEED
+		move_and_slide()

scripts/world.gd

@@ -2,12 +2,11 @@
 # Main world node script. Sets up the map, player, and level on scene ready.
 extends Node
 
-# Reference to the TileMapLayer node for rendering the map.
 
-# Reference to the TileMapLayer node for rendering the map.
-var map_layer: TileMapLayer
 # Path to the Player scene to instance.
 const PLAYER_SCENE_PATH: String = "res://scenes/actors/player.tscn"
+# Reference to the TileMapLayer node for rendering the map.
+var map_layer: TileMapLayer
 # Reference to the Player node.
 var player: Player
 # Map generation settings (size, room count, etc.).