diff options
Diffstat (limited to 'src/town_cmd.cpp')
| -rw-r--r-- | src/town_cmd.cpp | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/src/town_cmd.cpp b/src/town_cmd.cpp index fdf03b970..6d4c1bec3 100644 --- a/src/town_cmd.cpp +++ b/src/town_cmd.cpp @@ -129,15 +129,21 @@ static TownDrawTileProc * const _town_draw_tile_procs[1] = { TownDrawHouseLift }; -uint OriginalTileRandomiser(uint x, uint y) +/** + * Calculate a hash value from a tile position + * + * @param x The X coordinate + * @param y The Y coordinate + * @return The hash of the tile + */ +uint TileHash2Bit(uint x, uint y) { - uint variant; - variant = x >> 4; - variant ^= x >> 6; - variant ^= y >> 4; - variant -= y >> 6; - variant &= 3; - return variant; + uint hash = x >> 4; + hash ^= x >> 6; + hash ^= y >> 4; + hash -= y >> 6; + hash &= 3; + return hash; } /** @@ -175,7 +181,7 @@ static void DrawTile_Town(TileInfo *ti) } /* Retrieve pointer to the draw town tile struct */ - dcts = &_town_draw_tile_data[house_id << 4 | OriginalTileRandomiser(ti->x, ti->y) << 2 | GetHouseBuildingStage(ti->tile)]; + dcts = &_town_draw_tile_data[house_id << 4 | TileHash2Bit(ti->x, ti->y) << 2 | GetHouseBuildingStage(ti->tile)]; if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED); |