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Fix #7633: Allow zero-cost track conversion to succeed

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This commit is contained in:
Niels Martin Hansen
2019-07-01 10:37:59 +02:00
parent 9f81778836
commit 81614f2378
2 changed files with 10 additions and 2 deletions
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7
src/rail_cmd.cpp
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@@ -1578,6 +1578,7 @@ CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
CommandCost cost(EXPENSES_CONSTRUCTION);
CommandCost error = CommandCost(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK); // by default, there is no track to convert.
bool found_convertible_track = false; // whether we actually did convert some track (see bug #7633)
TileIterator *iter = diagonal ? (TileIterator *)new DiagonalTileIterator(area_start, area_end) : new OrthogonalTileIterator(area_start, area_end);
for (; (tile = *iter) != INVALID_TILE; ++(*iter)) {
@@ -1673,6 +1674,7 @@ CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
InvalidateWindowData(WC_VEHICLE_DEPOT, tile);
InvalidateWindowData(WC_BUILD_VEHICLE, tile);
}
found_convertible_track = true;
cost.AddCost(RailConvertCost(type, totype));
break;
@@ -1684,6 +1686,7 @@ CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
YapfNotifyTrackLayoutChange(tile, RemoveFirstTrack(&tracks));
}
}
found_convertible_track = true;
cost.AddCost(RailConvertCost(type, totype) * CountBits(GetTrackBits(tile)));
break;
}
@@ -1746,6 +1749,7 @@ CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
}
}
found_convertible_track = true;
cost.AddCost((GetTunnelBridgeLength(tile, endtile) + 2) * RailConvertCost(type, totype));
break;
}
@@ -1756,6 +1760,7 @@ CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
YapfNotifyTrackLayoutChange(tile, track);
}
found_convertible_track = true;
cost.AddCost(RailConvertCost(type, totype));
break;
}
@@ -1773,7 +1778,7 @@ CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
}
delete iter;
return (cost.GetCost() == 0) ? error : cost;
return found_convertible_track ? cost : error;
}
static CommandCost RemoveTrainDepot(TileIndex tile, DoCommandFlag flags)