diff options
Diffstat (limited to 'src/newgrf_commons.cpp')
-rw-r--r-- | src/newgrf_commons.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/newgrf_commons.cpp b/src/newgrf_commons.cpp index f52c1442a..5291bbac9 100644 --- a/src/newgrf_commons.cpp +++ b/src/newgrf_commons.cpp @@ -6,6 +6,8 @@ #include "stdafx.h" #include "openttd.h" +#include "variables.h" +#include "clear_map.h" #include "town.h" #include "industry.h" #include "newgrf.h" @@ -148,3 +150,18 @@ void HouseOverrideManager::SetEntitySpec(const HouseSpec *hs) entity_overrides[i] = invalid_ID; } } + +/** Function used by houses (and soon industries) to get information + * on type of "terrain" the tile it is queries sits on. + * @param tile TileIndex of the tile been queried + * @return value corresponding to the grf expected format: + * Terrain type: 0 normal, 1 desert, 2 rainforest, 4 on or above snowline */ +uint32 GetTerrainType(TileIndex tile) +{ + switch (_opt.landscape) { + case LT_TROPIC: return GetTropicZone(tile) == TROPICZONE_DESERT ? 1 : 2; + case LT_ARCTIC: return (GetClearGround(tile) == CLEAR_SNOW) ? 4 : 0; + default: return 0; + } +} + |