diff options
| -rw-r--r-- | src/autoslope.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/autoslope.h b/src/autoslope.h new file mode 100644 index 000000000..c6f40eb52 --- /dev/null +++ b/src/autoslope.h @@ -0,0 +1,42 @@ +/* $Id$ */ + +/** @file autoslope.h */ + +#ifndef AUTOSLOPE_H +#define AUTOSLOPE_H + +#include "depot.h" + +/** + * Autoslope check for tiles with an entrance on an edge. + * E.g. depots and non-drive-through-road-stops. + * + * The test succeeds if the slope is not steep and at least one corner of the entrance edge is on the TileMaxZ() level. + * + * @note The test does not check if autoslope is enabled at all. + * + * @param tile The tile. + * @param z_new New TileZ. + * @param tileh_new New TileSlope. + * @param entrance Entrance edge. + * @return true iff terraforming is allowed. + */ +static inline bool AutoslopeCheckForEntranceEdge(TileIndex tile, uint z_new, Slope tileh_new, DiagDirection entrance) +{ + if (IsSteepSlope(tileh_new) || (GetTileMaxZ(tile) != z_new + GetSlopeMaxZ(tileh_new))) return false; + return ((tileh_new == SLOPE_FLAT) || CanBuildDepotByTileh(entrance, tileh_new)); +} + +/** + * Tests if autoslope is enabled for _current_player. + * + * Autoslope is disabled for town/industry construction and old ai players. + * + * @return true iff autoslope is enabled. + */ +static inline bool AutoslopeEnabled() +{ + return (_patches.autoslope && IsValidPlayer(_current_player) && !_is_old_ai_player); +} + +#endif /* AUTOSLOPE_H */ |