diff options
Diffstat (limited to 'src/clear_cmd.cpp')
| -rw-r--r-- | src/clear_cmd.cpp | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/clear_cmd.cpp b/src/clear_cmd.cpp index eb443d85b..73183c504 100644 --- a/src/clear_cmd.cpp +++ b/src/clear_cmd.cpp @@ -355,7 +355,7 @@ CommandCost CmdTerraformLand(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) * @param tile end tile of area-drag * @param flags for this command type * @param p1 start tile of area drag - * @param p2 unused + * @param p2 height difference; eg raise (+1), lower (-1) or level (0) * @return error or cost of terraforming */ CommandCost CmdLevelLand(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) @@ -364,7 +364,7 @@ CommandCost CmdLevelLand(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) int ex; int ey; int sx, sy; - uint h, curh; + uint h, oldh, curh; CommandCost money; CommandCost ret; CommandCost cost; @@ -374,7 +374,13 @@ CommandCost CmdLevelLand(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); /* remember level height */ - h = TileHeight(p1); + oldh = TileHeight(p1); + + /* compute new height */ + h = oldh + p2; + + /* Check range of destination height */ + if (h > MAX_TILE_HEIGHT) return_cmd_error((oldh == 0) ? STR_1003_ALREADY_AT_SEA_LEVEL : STR_1004_TOO_HIGH); /* make sure sx,sy are smaller than ex,ey */ ex = TileX(tile); |