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fix(ui): render LOS boundary wall tiles through fog without marking explored (#585)

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- game_state.gd: add boundary_positions Dictionary field; BoundaryWall tiles from
  visible_tiles go to boundary_positions instead of visible_positions — rendered by
  tile_renderer but not tracked as explored fog memory
- fog_state.gd: update_from_state() writes VIS_FORWARD for boundary_positions so fog
  lifts over margin wall content; boundary tiles excluded from exploration step so they
  don't persist as EXP_EXPLORED when player turns away
- tile_renderer.gd: no changes needed — renders all visible_tiles by type, sector-agnostic
- test_fog_shader.gd: 4 new tests — boundary excluded from visible_positions, tracked in
  boundary_positions, cleared each snapshot, fog lifts to VIS_FORWARD

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
jpmschweitzer
2026-03-04 20:32:32 +01:00
co-authored by Claude Sonnet 4.6
parent c3abf32185
commit 475280191c
3 changed files with 93 additions and 4 deletions
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client/scripts/autoloads/game_state.gd
+12 -4
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@@ -18,7 +18,8 @@ var current_tick: int = 0
var player_position: Vector2 = Vector2.ZERO
var visible_entities: Array = []
var visible_tiles: Array = []
var visible_positions: Dictionary = {} # Vector2i -> true, for fast fog lookups
var visible_positions: Dictionary = {} # Vector2i -> true, for fast fog lookups (normal LOS tiles)
var boundary_positions: Dictionary = {} # Vector2i -> true, BoundaryWall margin tiles (#585) — visible in fog but not explored
# v2 fields (D-015, D-031)
var game_time: Dictionary = {} # {day, time_of_day, day_phase, tick_rate} or empty
@@ -347,17 +348,24 @@ func apply_snapshot(snapshot: Dictionary) -> void:
current_zone_id = player_tile.get("zone_id", "") if player_tile else ""
# v2: visible_tiles with visibility sectors
# Derives visible_positions when not explicitly provided (real server mode)
# Derives visible_positions when not explicitly provided (real server mode).
# #585: BoundaryWall tiles go to boundary_positions — rendered in fog but not marked explored.
if snapshot.has("visible_tiles") and snapshot.visible_tiles is Array and snapshot.visible_tiles.size() > 0:
visibility_sectors.clear()
var has_explicit_positions := snapshot.has("visible_positions")
if not has_explicit_positions:
visible_positions.clear()
boundary_positions.clear()
for vtile in snapshot.visible_tiles:
if not vtile is Dictionary or not vtile.has("x") or not vtile.has("y"):
continue
var pos := Vector2i(vtile.x, vtile.y)
var vis_sector: String = vtile.get("visibility", "")
if vtile.has("visibility"):
visibility_sectors[pos] = vtile.visibility
if not has_explicit_positions:
visibility_sectors[pos] = vis_sector
# #585: BoundaryWall tiles are margin tiles visible through fog but not persistently
# explored — they don't update the player's exploration memory when they leave LOS.
if vis_sector == "BoundaryWall":
boundary_positions[pos] = true
elif not has_explicit_positions:
visible_positions[pos] = true