/**
* Remove a lock.
* @param tile Central tile of the lock.
* @param flags Operation to perform.
* @return The cost in case of success, or an error code if it failed.
*/
static CommandCost RemoveLock(TileIndex tile, DoCommandFlag flags)
{
if (GetTileOwner(tile) != OWNER_NONE) {
CommandCost ret = CheckTileOwnership(tile);
if (ret.Failed()) return ret;
}
TileIndexDiff delta = TileOffsByDiagDir(GetLockDirection(tile));
/* make sure no vehicle is on the tile. */
CommandCost ret = EnsureNoVehicleOnGround(tile);
if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile + delta);
if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile - delta);
if (ret.Failed()) return ret;
if (flags & DC_EXEC) {
DoClearSquare(tile);
MakeWaterKeepingClass(tile + delta, GetTileOwner(tile + delta));
MakeWaterKeepingClass(tile - delta, GetTileOwner(tile - delta));
MarkCanalsAndRiversAroundDirty(tile - delta);
MarkCanalsAndRiversAroundDirty(tile + delta);
}
return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_LOCK]);
}
static CommandCost RemoveShiplift(TileIndex tile, DoCommandFlag flags)
{
TileIndexDiff delta = TileOffsByDiagDir(GetLockDirection(tile));
if (!CheckTileOwnership(tile) && GetTileOwner(tile) != OWNER_NONE) return CMD_ERROR;
/* make sure no vehicle is on the tile. */
if (!EnsureNoVehicleOnGround(tile) || !EnsureNoVehicleOnGround(tile + delta) || !EnsureNoVehicleOnGround(tile - delta))
return CMD_ERROR;
if (flags & DC_EXEC) {
DoClearSquare(tile);
MakeWaterKeepingClass(tile + delta, GetTileOwner(tile));
MakeWaterKeepingClass(tile - delta, GetTileOwner(tile));
MarkTileDirtyByTile(tile - delta);
MarkTileDirtyByTile(tile + delta);
MarkCanalsAndRiversAroundDirty(tile - delta);
MarkCanalsAndRiversAroundDirty(tile + delta);
}
return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_WATER] * 2);
}
/**
* Remove a lock.
* @param tile Central tile of the lock.
* @param flags Operation to perform.
* @return The cost in case of success, or an error code if it failed.
*/
static CommandCost RemoveLock(TileIndex tile, DoCommandFlag flags)
{
if (GetTileOwner(tile) != OWNER_NONE) {
CommandCost ret = CheckTileOwnership(tile);
if (ret.Failed()) return ret;
}
TileIndexDiff delta = TileOffsByDiagDir(GetLockDirection(tile));
/* make sure no vehicle is on the tile. */
CommandCost ret = EnsureNoVehicleOnGround(tile);
if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile + delta);
if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile - delta);
if (ret.Failed()) return ret;
if (flags & DC_EXEC) {
/* Remove middle part from company infrastructure count. */
Company *c = Company::GetIfValid(GetTileOwner(tile));
if (c != NULL) {
c->infrastructure.water -= 3 * LOCK_DEPOT_TILE_FACTOR; // three parts of the lock.
DirtyCompanyInfrastructureWindows(c->index);
}
if (GetWaterClass(tile) == WATER_CLASS_RIVER) {
MakeRiver(tile, Random());
} else {
DoClearSquare(tile);
}
MakeWaterKeepingClass(tile + delta, GetTileOwner(tile + delta));
MakeWaterKeepingClass(tile - delta, GetTileOwner(tile - delta));
MarkCanalsAndRiversAroundDirty(tile);
MarkCanalsAndRiversAroundDirty(tile - delta);
MarkCanalsAndRiversAroundDirty(tile + delta);
}
return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_LOCK]);
}
