67 lines
2.8 KiB
GDScript
67 lines
2.8 KiB
GDScript
## LevelManager.gd
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# Manages the current level's data, visual representation, and navigation graph.
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# Responsible for generating, painting, and initializing the level, as well as providing pathfinding and coordinate helpers.
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extends Node
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const ENEMY_SCENE_PATH: String = "res://scenes/actors/enemy.tscn"
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# The source of truth for the current level's layout (MapData resource).
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var _data: MapData
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# The TileMapLayer node where the map is visually rendered.
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var _layer: TileMapLayer
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# Service objects for map generation, painting, and pathfinding.
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# MapGenerator and MapPainter are stateless; PathfindingHandler manages the navigation graph.
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var _generator: MapGenerator = MapGenerator.new()
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var _painter: MapPainter = MapPainter.new()
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var _pathfinding: PathfindingHandler = PathfindingHandler.new()
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# Orchestrates the creation of a new level.
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# 1. Generates the map data.
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# 2. Paints the map visually.
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# 3. Builds the navigation graph for AI/pathfinding.
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# 4. Spawns the player at the correct location.
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func initialize(settings: MapSettings, layer: TileMapLayer, player: Player) -> void:
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_layer = layer
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# 1. Generate the abstract map data (rooms, corridors, etc.).
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# This avoids side effects on the settings resource.
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_data = _generator.generate(settings)
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# 2. Paint the visual layer for the player to see.
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# This does not modify the underlying map data.
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_painter.paint(_data, _layer)
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# 3. Build the AStar graph for AI and navigation.
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# Reads directly from the grid stored in _data.
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_pathfinding.build(_data)
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# 4. Finalize world state by spawning the player at the spawn point.
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# Uses the TileMapLayer to convert grid coordinates to world pixel positions.
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player.position = _layer.map_to_local(_data.spawn_point)
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# 5. Spawn one enemy per room, skipping the player's spawn room (index 0).
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var enemy_scene := load(ENEMY_SCENE_PATH) as PackedScene
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var world_node := player.get_parent()
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for i in range(1, _data.rooms.size()):
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var enemy_instance = enemy_scene.instantiate()
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var enemy = enemy_instance as Enemy
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if enemy == null:
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push_error("Failed to cast enemy instance to Enemy at room index %d" % i)
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continue
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enemy._player = player
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world_node.add_child(enemy)
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enemy.position = _layer.map_to_local(_data.rooms[i].get_center())
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# Public API for other systems (like AI) to query the navigation grid.
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# Encapsulates the PathfindingHandler so callers don't need to know about it directly.
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func find_path(from: Vector2i, to: Vector2i) -> Array[Vector2i]:
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return _pathfinding.find_path(from, to)
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# Coordinate conversion helpers — lets the player and other systems convert between world and tile coordinates without touching the TileMapLayer directly.
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func world_to_tile(world_pos: Vector2) -> Vector2i:
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return _layer.local_to_map(world_pos)
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func tile_to_world(tile: Vector2i) -> Vector2:
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return _layer.map_to_local(tile)
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