diff options
Diffstat (limited to 'src/industry_cmd.cpp')
| -rw-r--r-- | src/industry_cmd.cpp | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/industry_cmd.cpp b/src/industry_cmd.cpp index 97adbb84e..f1800ef40 100644 --- a/src/industry_cmd.cpp +++ b/src/industry_cmd.cpp @@ -36,6 +36,7 @@ #include "newgrf_industrytiles.h" #include "newgrf_callbacks.h" #include "misc/autoptr.hpp" +#include "autoslope.h" void ShowIndustryViewWindow(int industry); void BuildOilRig(TileIndex tile); @@ -1974,6 +1975,30 @@ Money IndustrySpec::GetConstructionCost() const static CommandCost TerraformTile_Industry(TileIndex tile, uint32 flags, uint z_new, Slope tileh_new) { + if (AutoslopeEnabled()) { + /* We imitate here TTDP's behaviour: + * - Both new and old slope must not be steep. + * - TileMaxZ must not be changed. + * - Allow autoslope by default. + * - Disallow autoslope if callback succeeds and returns non-zero. + */ + Slope tileh_old = GetTileSlope(tile, NULL); + /* TileMaxZ must not be changed. Slopes must not be steep. */ + if (!IsSteepSlope(tileh_old) && !IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new))) { + const IndustryGfx gfx = GetIndustryGfx(tile); + const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx); + + /* Call callback 3C 'disable autosloping for industry tiles'. */ + if (HASBIT(itspec->callback_flags, CBM_INDT_AUTOSLOPE)) { + /* If the callback fails, allow autoslope. */ + uint16 res = GetIndustryTileCallback(CBID_INDUSTRY_AUTOSLOPE, 0, 0, gfx, GetIndustryByTile(tile), tile); + if ((res == 0) || (res == CALLBACK_FAILED)) return _price.terraform; + } else { + // allow autoslope + return _price.terraform; + } + } + } return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); // funny magic bulldozer } |