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(svn r24439) -Fix [FS#5254]: In some cases ships could be covered with land.

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frosch
2012-07-27 19:55:27 +00:00
parent 13bfb09cbb
commit 59a3bbcbe6
1 changed files with 11 additions and 0 deletions
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11
src/rail_cmd.cpp
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@@ -2930,6 +2930,14 @@ static CommandCost TestAutoslopeOnRailTile(TileIndex tile, uint flags, int z_old
return cost;
}
/**
* Test-procedure for HasVehicleOnPos to check for a ship.
*/
static Vehicle *EnsureNoShipProc(Vehicle *v, void *data)
{
return v->type == VEH_SHIP ? v : NULL;
}
static CommandCost TerraformTile_Track(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
{
int z_old;
@@ -2939,6 +2947,9 @@ static CommandCost TerraformTile_Track(TileIndex tile, DoCommandFlag flags, int
/* Is there flat water on the lower halftile that must be cleared expensively? */
bool was_water = (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh_old));
/* Allow clearing the water only if there is no ship */
if (was_water && HasVehicleOnPos(tile, NULL, &EnsureNoShipProc)) return_cmd_error(STR_ERROR_SHIP_IN_THE_WAY);
/* First test autoslope. However if it succeeds we still have to test the rest, because non-autoslope terraforming is cheaper. */
CommandCost autoslope_result = TestAutoslopeOnRailTile(tile, flags, z_old, tileh_old, z_new, tileh_new, rail_bits);