/**
* 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]);
}
/**
* Builds a lock.
* @param tile Central tile of the lock.
* @param dir Uphill direction.
* @param flags Operation to perform.
* @return The cost in case of success, or an error code if it failed.
*/
static CommandCost DoBuildLock(TileIndex tile, DiagDirection dir, DoCommandFlag flags)
{
CommandCost cost(EXPENSES_CONSTRUCTION);
int delta = TileOffsByDiagDir(dir);
CommandCost ret = EnsureNoVehicleOnGround(tile);
if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile + delta);
if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile - delta);
if (ret.Failed()) return ret;
/* middle tile */
WaterClass wc_middle = IsWaterTile(tile) ? GetWaterClass(tile) : WATER_CLASS_CANAL;
ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (ret.Failed()) return ret;
cost.AddCost(ret);
/* lower tile */
if (!IsWaterTile(tile - delta)) {
ret = DoCommand(tile - delta, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (ret.Failed()) return ret;
cost.AddCost(ret);
cost.AddCost(_price[PR_BUILD_CANAL]);
}
if (!IsTileFlat(tile - delta)) {
return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
}
WaterClass wc_lower = IsWaterTile(tile - delta) ? GetWaterClass(tile - delta) : WATER_CLASS_CANAL;
/* upper tile */
if (!IsWaterTile(tile + delta)) {
ret = DoCommand(tile + delta, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (ret.Failed()) return ret;
cost.AddCost(ret);
cost.AddCost(_price[PR_BUILD_CANAL]);
}
if (!IsTileFlat(tile + delta)) {
return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
}
WaterClass wc_upper = IsWaterTile(tile + delta) ? GetWaterClass(tile + delta) : WATER_CLASS_CANAL;
if (IsBridgeAbove(tile) || IsBridgeAbove(tile - delta) || IsBridgeAbove(tile + delta)) {
return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
}
if (flags & DC_EXEC) {
/* Update company infrastructure counts. */
Company *c = Company::GetIfValid(_current_company);
if (c != NULL) {
/* Counts for the water. */
if (!IsWaterTile(tile - delta)) c->infrastructure.water++;
if (!IsWaterTile(tile + delta)) c->infrastructure.water++;
/* Count for the lock itself. */
c->infrastructure.water += 3 * LOCK_DEPOT_TILE_FACTOR; // Lock is three tiles.
DirtyCompanyInfrastructureWindows(_current_company);
}
MakeLock(tile, _current_company, dir, wc_lower, wc_upper, wc_middle);
MarkTileDirtyByTile(tile);
MarkTileDirtyByTile(tile - delta);
MarkTileDirtyByTile(tile + delta);
MarkCanalsAndRiversAroundDirty(tile - delta);
MarkCanalsAndRiversAroundDirty(tile + delta);
}
cost.AddCost(_price[PR_BUILD_LOCK]);
return cost;
}
/**
* Build a ship depot.
* @param tile tile where ship depot is built
* @param flags type of operation
* @param p1 bit 0 depot orientation (Axis)
* @param p2 unused
* @param text unused
* @return the cost of this operation or an error
*/
CommandCost CmdBuildShipDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
Axis axis = Extract<Axis, 0, 1>(p1);
TileIndex tile2 = tile + (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
WaterClass wc1, wc2;
if ((flags & DC_PASTE) && !(flags & DC_EXEC)) {
/* When pasting a ship depot, there may be no water yet (a canal will be placed when DC_EXE'ing).
* Ignore that there is no water so we can calculate the cost more precisely. */
wc1 = wc2 = WATER_CLASS_INVALID;
} else {
if (!HasTileWaterGround(tile) || !HasTileWaterGround(tile2)) return_cmd_error(STR_ERROR_MUST_BE_BUILT_ON_WATER);
wc1 = GetWaterClass(tile);
wc2 = GetWaterClass(tile2);
}
if ((MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) ||
(MayHaveBridgeAbove(tile2) && IsBridgeAbove(tile2))) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
if (GetTileSlope(tile) != SLOPE_FLAT || GetTileSlope(tile2) != SLOPE_FLAT) {
/* Prevent depots on rapids */
return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
}
if (!Depot::CanAllocateItem()) return CMD_ERROR;
CommandCost cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_DEPOT_SHIP]);
bool add_cost = !IsWaterTile(tile);
CommandCost ret = DoCommand(tile, 0, 0, flags | DC_AUTO, CMD_LANDSCAPE_CLEAR);
if (ret.Failed()) return ret;
if (add_cost) {
cost.AddCost(ret);
}
add_cost = !IsWaterTile(tile2);
ret = DoCommand(tile2, 0, 0, flags | DC_AUTO, CMD_LANDSCAPE_CLEAR);
if (ret.Failed()) return ret;
if (add_cost) {
cost.AddCost(ret);
}
if (flags & DC_EXEC) {
Depot *depot = new Depot(tile);
depot->build_date = _date;
if (wc1 == WATER_CLASS_CANAL || wc2 == WATER_CLASS_CANAL) {
/* Update infrastructure counts after the unconditional clear earlier. */
Company::Get(_current_company)->infrastructure.water += wc1 == WATER_CLASS_CANAL && wc2 == WATER_CLASS_CANAL ? 2 : 1;
}
Company::Get(_current_company)->infrastructure.water += 2 * LOCK_DEPOT_TILE_FACTOR;
DirtyCompanyInfrastructureWindows(_current_company);
assert(wc1 != WATER_CLASS_INVALID && wc2 != WATER_CLASS_INVALID);
MakeShipDepot(tile, _current_company, depot->index, DEPOT_PART_NORTH, axis, wc1);
MakeShipDepot(tile2, _current_company, depot->index, DEPOT_PART_SOUTH, axis, wc2);
MarkTileDirtyByTile(tile);
MarkTileDirtyByTile(tile2);
MakeDefaultName(depot);
}
return cost;
}
