extends GameplayRenderer

# World renderer — manages all visual representation from GameState
# Attached to the World node in main.tscn
#
# D-049 Z-level rendering pipeline (z-layer-gap-analysis.md):
#   FogGroup (CanvasGroup) composites world content:
#     FloorTiles (TileMapLayer)      — z:0 ground plane
#     FloorObjects (Node2D)          — z:10 cosmetic detail (placeholder)
#     YSortGroup (Node2D, y_sort)    — z:100 furniture + entities (all z:0 relative)
#       Furniture (Node2D, y_sort)   — z:0 placed objects (placeholder)
#       Entities (Node2D, y_sort)    — z:0 entity sprites (D-033 colors)
#     Overhead (Node2D)              — z:300 ceiling/upper structure (placeholder)
#   FogOverlay (Node2D)              — z:900 fog shader (OUTSIDE FogGroup)

var _last_tick: int = -1

@onready var tile_renderer = $FogGroup/FloorTiles
@onready var fog_renderer = $FogOverlay
@onready var entity_renderer = $FogGroup/YSortGroup/Entities
@onready var sound_indicator_renderer = $SoundIndicators  # #126 D-018 medium-range indicators


func _renderer_ready() -> void:
	print("WorldRenderer: Initialized (D-049 z-stack)")


# 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:
	if gameplay_occluded:
		return  # D-170: skip rendering while fullscreen implant app is active
	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)

	# Update fog overlay — shader-based, reads from FogState autoload
	if fog_renderer and fog_renderer.has_method("update_fog"):
		fog_renderer.update_fog()

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

	# D-018 #126: Update medium-range sound indicators
	if sound_indicator_renderer and sound_indicator_renderer.has_method("update_sound_events"):
		sound_indicator_renderer.update_sound_events(GameState.medium_sound_events)