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Location: cpp/openttd-patchpack/source/src/waypoint_cmd.cpp - annotation
r22159:1c3de15ce0f6
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(svn r27332) -Change: Enable YAPF cache debugging with desync debug level 2.
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r12381:5e06b887e97b r11348:d08d1098a28e r11348:d08d1098a28e r11348:d08d1098a28e | /* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file waypoint_cmd.cpp %Command Handling for waypoints. */
#include "stdafx.h"
#include "cmd_helper.h"
#include "command_func.h"
#include "landscape.h"
#include "bridge_map.h"
#include "town.h"
#include "waypoint_base.h"
#include "pathfinder/yapf/yapf_cache.h"
#include "strings_func.h"
#include "viewport_func.h"
#include "window_func.h"
#include "date_func.h"
#include "vehicle_func.h"
#include "string_func.h"
#include "company_func.h"
#include "newgrf_station.h"
#include "company_base.h"
#include "water.h"
#include "company_gui.h"
#include "table/strings.h"
#include "safeguards.h"
/**
* Update the virtual coords needed to draw the waypoint sign.
*/
void Waypoint::UpdateVirtCoord()
{
Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
SetDParam(0, this->index);
this->sign.UpdatePosition(pt.x, pt.y - 32 * ZOOM_LVL_BASE, STR_VIEWPORT_WAYPOINT);
/* Recenter viewport */
InvalidateWindowData(WC_WAYPOINT_VIEW, this->index);
}
/**
* Find a deleted waypoint close to a tile.
* @param tile to search from
* @param str the string to get the 'type' of
* @param cid previous owner of the waypoint
* @return the deleted nearby waypoint
*/
static Waypoint *FindDeletedWaypointCloseTo(TileIndex tile, StringID str, CompanyID cid)
{
Waypoint *wp, *best = NULL;
uint thres = 8;
FOR_ALL_WAYPOINTS(wp) {
if (!wp->IsInUse() && wp->string_id == str && wp->owner == cid) {
uint cur_dist = DistanceManhattan(tile, wp->xy);
if (cur_dist < thres) {
thres = cur_dist;
best = wp;
}
}
}
return best;
}
/**
* Get the axis for a new waypoint. This means that if it is a valid
* tile to build a waypoint on it returns a valid Axis, otherwise an
* invalid one.
* @param tile the tile to look at.
* @return the axis for the to-be-build waypoint.
*/
Axis GetAxisForNewWaypoint(TileIndex tile)
{
/* The axis for rail waypoints is easy. */
if (IsRailWaypointTile(tile)) return GetRailStationAxis(tile);
/* Non-plain rail type, no valid axis for waypoints. */
if (!IsTileType(tile, MP_RAILWAY) || GetRailTileType(tile) != RAIL_TILE_NORMAL) return INVALID_AXIS;
switch (GetTrackBits(tile)) {
case TRACK_BIT_X: return AXIS_X;
case TRACK_BIT_Y: return AXIS_Y;
default: return INVALID_AXIS;
}
}
extern CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
/**
* Check whether the given tile is suitable for a waypoint.
* @param tile the tile to check for suitability
* @param axis the axis of the waypoint
* @param waypoint Waypoint the waypoint to check for is already joined to. If we find another waypoint it can join to it will throw an error.
*/
static CommandCost IsValidTileForWaypoint(TileIndex tile, Axis axis, StationID *waypoint)
{
/* if waypoint is set, then we have special handling to allow building on top of already existing waypoints.
* so waypoint points to INVALID_STATION if we can build on any waypoint.
* Or it points to a waypoint if we're only allowed to build on exactly that waypoint. */
if (waypoint != NULL && IsTileType(tile, MP_STATION)) {
if (!IsRailWaypoint(tile)) {
return ClearTile_Station(tile, DC_AUTO); // get error message
} else {
StationID wp = GetStationIndex(tile);
if (*waypoint == INVALID_STATION) {
*waypoint = wp;
} else if (*waypoint != wp) {
return_cmd_error(STR_ERROR_WAYPOINT_ADJOINS_MORE_THAN_ONE_EXISTING);
}
}
}
if (GetAxisForNewWaypoint(tile) != axis) return_cmd_error(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK);
Owner owner = GetTileOwner(tile);
CommandCost ret = CheckOwnership(owner);
if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile);
if (ret.Failed()) return ret;
Slope tileh = GetTileSlope(tile);
if (tileh != SLOPE_FLAT &&
(!_settings_game.construction.build_on_slopes || IsSteepSlope(tileh) || !(tileh & (0x3 << axis)) || !(tileh & ~(0x3 << axis)))) {
return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
}
if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
return CommandCost();
}
extern void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec);
extern CommandCost FindJoiningWaypoint(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Waypoint **wp);
extern CommandCost CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis);
/**
* Convert existing rail to waypoint. Eg build a waypoint station over
* piece of rail
* @param start_tile northern most tile where waypoint will be built
* @param flags type of operation
* @param p1 various bitstuffed elements
* - p1 = (bit 4) - orientation (Axis)
* - p1 = (bit 8-15) - width of waypoint
* - p1 = (bit 16-23) - height of waypoint
* - p1 = (bit 24) - allow waypoints directly adjacent to other waypoints.
* @param p2 various bitstuffed elements
* - p2 = (bit 0- 7) - custom station class
* - p2 = (bit 8-15) - custom station id
* @param text unused
* @return the cost of this operation or an error
*/
CommandCost CmdBuildRailWaypoint(TileIndex start_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
/* Unpack parameters */
Axis axis = Extract<Axis, 4, 1>(p1);
byte width = GB(p1, 8, 8);
byte height = GB(p1, 16, 8);
bool adjacent = HasBit(p1, 24);
StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
byte spec_index = GB(p2, 8, 8);
StationID station_to_join = GB(p2, 16, 16);
/* Check if the given station class is valid */
if (spec_class != STAT_CLASS_WAYP) return CMD_ERROR;
if (spec_index >= StationClass::Get(spec_class)->GetSpecCount()) return CMD_ERROR;
/* The number of parts to build */
byte count = axis == AXIS_X ? height : width;
if ((axis == AXIS_X ? width : height) != 1) return CMD_ERROR;
if (count == 0 || count > _settings_game.station.station_spread) return CMD_ERROR;
bool reuse = (station_to_join != NEW_STATION);
if (!reuse) station_to_join = INVALID_STATION;
bool distant_join = (station_to_join != INVALID_STATION);
if (distant_join && (!_settings_game.station.distant_join_stations || !Waypoint::IsValidID(station_to_join))) return CMD_ERROR;
/* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
StationID est = INVALID_STATION;
/* Check whether the tiles we're building on are valid rail or not. */
TileIndexDiff offset = TileOffsByDiagDir(AxisToDiagDir(OtherAxis(axis)));
for (int i = 0; i < count; i++) {
TileIndex tile = start_tile + i * offset;
CommandCost ret = IsValidTileForWaypoint(tile, axis, &est);
if (ret.Failed()) return ret;
}
Waypoint *wp = NULL;
TileArea new_location(TileArea(start_tile, width, height));
CommandCost ret = FindJoiningWaypoint(est, station_to_join, adjacent, new_location, &wp);
if (ret.Failed()) return ret;
/* Check if there is an already existing, deleted, waypoint close to us that we can reuse. */
TileIndex center_tile = start_tile + (count / 2) * offset;
if (wp == NULL && reuse) wp = FindDeletedWaypointCloseTo(center_tile, STR_SV_STNAME_WAYPOINT, _current_company);
if (wp != NULL) {
/* Reuse an existing waypoint. */
if (wp->owner != _current_company) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_WAYPOINT);
/* check if we want to expand an already existing waypoint? */
if (wp->train_station.tile != INVALID_TILE) {
CommandCost ret = CanExpandRailStation(wp, new_location, axis);
if (ret.Failed()) return ret;
}
CommandCost ret = wp->rect.BeforeAddRect(start_tile, width, height, StationRect::ADD_TEST);
if (ret.Failed()) return ret;
} else {
/* allocate and initialize new waypoint */
if (!Waypoint::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
}
if (flags & DC_EXEC) {
if (wp == NULL) {
wp = new Waypoint(start_tile);
} else if (!wp->IsInUse()) {
/* Move existing (recently deleted) waypoint to the new location */
wp->xy = start_tile;
}
wp->owner = GetTileOwner(start_tile);
wp->rect.BeforeAddRect(start_tile, width, height, StationRect::ADD_TRY);
wp->delete_ctr = 0;
wp->facilities |= FACIL_TRAIN;
wp->build_date = _date;
wp->string_id = STR_SV_STNAME_WAYPOINT;
wp->train_station = new_location;
if (wp->town == NULL) MakeDefaultName(wp);
wp->UpdateVirtCoord();
const StationSpec *spec = StationClass::Get(spec_class)->GetSpec(spec_index);
byte *layout_ptr = AllocaM(byte, count);
if (spec == NULL) {
/* The layout must be 0 for the 'normal' waypoints by design. */
memset(layout_ptr, 0, count);
} else {
/* But for NewGRF waypoints we like to have their style. */
GetStationLayout(layout_ptr, count, 1, spec);
}
byte map_spec_index = AllocateSpecToStation(spec, wp, true);
Company *c = Company::Get(wp->owner);
for (int i = 0; i < count; i++) {
TileIndex tile = start_tile + i * offset;
byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
if (!HasStationTileRail(tile)) c->infrastructure.station++;
bool reserved = IsTileType(tile, MP_RAILWAY) ?
HasBit(GetRailReservationTrackBits(tile), AxisToTrack(axis)) :
HasStationReservation(tile);
MakeRailWaypoint(tile, wp->owner, wp->index, axis, layout_ptr[i], GetRailType(tile));
SetCustomStationSpecIndex(tile, map_spec_index);
SetRailStationReservation(tile, reserved);
MarkTileDirtyByTile(tile);
DeallocateSpecFromStation(wp, old_specindex);
YapfNotifyTrackLayoutChange(tile, AxisToTrack(axis));
}
DirtyCompanyInfrastructureWindows(wp->owner);
}
return CommandCost(EXPENSES_CONSTRUCTION, count * _price[PR_BUILD_WAYPOINT_RAIL]);
}
/**
* Build a buoy.
* @param tile tile where to place the buoy
* @param flags operation to perform
* @param p1 unused
* @param p2 unused
* @param text unused
* @return the cost of this operation or an error
*/
CommandCost CmdBuildBuoy(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
if (tile == 0 || !HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
if (!IsTileFlat(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
/* Check if there is an already existing, deleted, waypoint close to us that we can reuse. */
Waypoint *wp = FindDeletedWaypointCloseTo(tile, STR_SV_STNAME_BUOY, OWNER_NONE);
if (wp == NULL && !Waypoint::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
CommandCost cost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_WAYPOINT_BUOY]);
if (!IsWaterTile(tile)) {
CommandCost ret = DoCommand(tile, 0, 0, flags | DC_AUTO, CMD_LANDSCAPE_CLEAR);
if (ret.Failed()) return ret;
cost.AddCost(ret);
}
if (flags & DC_EXEC) {
if (wp == NULL) {
wp = new Waypoint(tile);
} else {
/* Move existing (recently deleted) buoy to the new location */
wp->xy = tile;
InvalidateWindowData(WC_WAYPOINT_VIEW, wp->index);
}
wp->rect.BeforeAddTile(tile, StationRect::ADD_TRY);
wp->string_id = STR_SV_STNAME_BUOY;
wp->facilities |= FACIL_DOCK;
wp->owner = OWNER_NONE;
wp->build_date = _date;
if (wp->town == NULL) MakeDefaultName(wp);
MakeBuoy(tile, wp->index, GetWaterClass(tile));
wp->UpdateVirtCoord();
InvalidateWindowData(WC_WAYPOINT_VIEW, wp->index);
}
return cost;
}
/**
* Remove a buoy
* @param tile TileIndex been queried
* @param flags operation to perform
* @pre IsBuoyTile(tile)
* @return cost or failure of operation
*/
CommandCost RemoveBuoy(TileIndex tile, DoCommandFlag flags)
{
/* XXX: strange stuff, allow clearing as invalid company when clearing landscape */
if (!Company::IsValidID(_current_company) && !(flags & DC_BANKRUPT)) return_cmd_error(INVALID_STRING_ID);
Waypoint *wp = Waypoint::GetByTile(tile);
if (HasStationInUse(wp->index, false, _current_company)) return_cmd_error(STR_ERROR_BUOY_IS_IN_USE);
/* remove the buoy if there is a ship on tile when company goes bankrupt... */
if (!(flags & DC_BANKRUPT)) {
CommandCost ret = EnsureNoVehicleOnGround(tile);
if (ret.Failed()) return ret;
}
if (flags & DC_EXEC) {
wp->facilities &= ~FACIL_DOCK;
InvalidateWindowData(WC_WAYPOINT_VIEW, wp->index);
/* We have to set the water tile's state to the same state as before the
* buoy was placed. Otherwise one could plant a buoy on a canal edge,
* remove it and flood the land (if the canal edge is at level 0) */
MakeWaterKeepingClass(tile, GetTileOwner(tile));
wp->rect.AfterRemoveTile(wp, tile);
wp->UpdateVirtCoord();
wp->delete_ctr = 0;
}
return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_WAYPOINT_BUOY]);
}
/**
* Check whether the name is unique amongst the waypoints.
* @param name The name to check.
* @return True iff the name is unique.
*/
static bool IsUniqueWaypointName(const char *name)
{
const Waypoint *wp;
FOR_ALL_WAYPOINTS(wp) {
if (wp->name != NULL && strcmp(wp->name, name) == 0) return false;
}
return true;
}
/**
* Rename a waypoint.
* @param tile unused
* @param flags type of operation
* @param p1 id of waypoint
* @param p2 unused
* @param text the new name or an empty string when resetting to the default
* @return the cost of this operation or an error
*/
CommandCost CmdRenameWaypoint(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
Waypoint *wp = Waypoint::GetIfValid(p1);
if (wp == NULL) return CMD_ERROR;
if (wp->owner != OWNER_NONE) {
CommandCost ret = CheckOwnership(wp->owner);
if (ret.Failed()) return ret;
}
bool reset = StrEmpty(text);
if (!reset) {
if (Utf8StringLength(text) >= MAX_LENGTH_STATION_NAME_CHARS) return CMD_ERROR;
if (!IsUniqueWaypointName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
}
if (flags & DC_EXEC) {
free(wp->name);
wp->name = reset ? NULL : stredup(text);
wp->UpdateVirtCoord();
}
return CommandCost();
}
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