extends Node2D

# World renderer — manages all visual representation from GameState
# Attached to the World node in main.tscn
# Render order (scene tree): TileMapLayer -> FogOverlay -> Entities

@onready var tile_renderer = $TileMapLayer
@onready var fog_renderer = $FogOverlay
@onready var entity_renderer = $Entities

var _last_tick: int = -1

func _ready() -> void:
	print("WorldRenderer: Initialized")

# Called each frame to update visuals from game state.
# Uses tick-based invalidation — re-renders all layers when a new snapshot arrives.
func update_from_state() -> void:
	var tick := GameState.current_tick
	if tick == _last_tick:
		return
	_last_tick = tick

	# Update tiles (may include new chunks or modified tiles)
	if tile_renderer and tile_renderer.has_method("update_tiles"):
		if GameState.visible_tiles.size() > 0:
			tile_renderer.update_tiles(GameState.visible_tiles)
			if fog_renderer and fog_renderer.has_method("register_tile_positions"):
				fog_renderer.register_tile_positions(GameState.visible_tiles)

	# Update fog overlay from visibility data
	if fog_renderer and fog_renderer.has_method("update_fog"):
		fog_renderer.update_fog(GameState.visible_positions, GameState.player_position)

	# Update entity sprites
	if entity_renderer and entity_renderer.has_method("update_entities"):
		entity_renderer.update_entities(GameState.visible_entities)