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/* $Id$ */
/** @file station.cpp Implementation of the station base class. */
#include "stdafx.h"
#include "company_func.h"
#include "industry.h"
#include "newgrf_cargo.h"
#include "yapf/yapf.h"
#include "cargotype.h"
#include "roadveh.h"
#include "window_type.h"
#include "station_gui.h"
#include "zoom_func.h"
#include "functions.h"
#include "window_func.h"
#include "date_func.h"
#include "command_func.h"
#include "news_func.h"
#include "aircraft.h"
#include "vehicle_gui.h"
#include "settings_type.h"
#include "subsidy_func.h"
#include "core/pool_func.hpp"
#include "station_base.h"
#include "roadstop_base.h"
#include "industry_map.h"
#include "table/strings.h"
StationPool _station_pool("Station");
INSTANTIATE_POOL_METHODS(Station)
Station::Station(TileIndex tile) :
xy(tile),
train_tile(INVALID_TILE),
airport_tile(INVALID_TILE),
dock_tile(INVALID_TILE),
indtype(IT_INVALID),
time_since_load(255),
time_since_unload(255),
last_vehicle_type(VEH_INVALID)
{
/* this->random_bits is set in Station::AddFacility() */
}
/**
* Clean up a station by clearing vehicle orders and invalidating windows.
* Aircraft-Hangar orders need special treatment here, as the hangars are
* actually part of a station (tiletype is STATION), but the order type
* is OT_GOTO_DEPOT.
*/
Station::~Station()
{
free(this->name);
free(this->speclist);
if (CleaningPool()) return;
while (!this->loading_vehicles.empty()) {
this->loading_vehicles.front()->LeaveStation();
}
Aircraft *a;
FOR_ALL_AIRCRAFT(a) {
if (!IsNormalAircraft(a)) continue;
if (a->targetairport == this->index) a->targetairport = INVALID_STATION;
}
Vehicle *v;
FOR_ALL_VEHICLES(v) {
/* Forget about this station if this station is removed */
if (v->last_station_visited == this->index) {
v->last_station_visited = INVALID_STATION;
}
}
this->MarkDirty();
InvalidateWindowData(WC_STATION_LIST, this->owner, 0);
DeleteWindowById(WC_STATION_VIEW, index);
WindowNumber wno = (this->index << 16) | VLW_STATION_LIST | this->owner;
DeleteWindowById(WC_TRAINS_LIST, wno | (VEH_TRAIN << 11));
DeleteWindowById(WC_ROADVEH_LIST, wno | (VEH_ROAD << 11));
DeleteWindowById(WC_SHIPS_LIST, wno | (VEH_SHIP << 11));
DeleteWindowById(WC_AIRCRAFT_LIST, wno | (VEH_AIRCRAFT << 11));
/* Now delete all orders that go to the station */
RemoveOrderFromAllVehicles(OT_GOTO_STATION, index);
/* Subsidies need removal as well */
DeleteSubsidyWithStation(index);
/* Remove all news items */
DeleteStationNews(this->index);
for (CargoID c = 0; c < NUM_CARGO; c++) {
this->goods[c].cargo.Truncate(0);
}
CargoPacket *cp;
FOR_ALL_CARGOPACKETS(cp) {
/* Don't allow cargo packets with invalid source station */
if (cp->source == this->index) cp->source = INVALID_STATION;
}
}
/**
* Invalidating of the JoinStation window has to be done
* after removing item from the pool.
* @param index index of deleted item
*/
void Station::PostDestructor(size_t index)
{
InvalidateWindowData(WC_SELECT_STATION, 0, 0);
}
/**
* Get the primary road stop (the first road stop) that the given vehicle can load/unload.
* @param v the vehicle to get the first road stop for
* @return the first roadstop that this vehicle can load at
*/
RoadStop *Station::GetPrimaryRoadStop(const RoadVehicle *v) const
{
RoadStop *rs = this->GetPrimaryRoadStop(IsCargoInClass(v->cargo_type, CC_PASSENGERS) ? ROADSTOP_BUS : ROADSTOP_TRUCK);
for (; rs != NULL; rs = rs->next) {
/* The vehicle cannot go to this roadstop (different roadtype) */
if ((GetRoadTypes(rs->xy) & v->compatible_roadtypes) == ROADTYPES_NONE) continue;
/* The vehicle is articulated and can therefor not go the a standard road stop */
if (IsStandardRoadStopTile(rs->xy) && v->HasArticulatedPart()) continue;
/* The vehicle can actually go to this road stop. So, return it! */
break;
}
return rs;
}
/** Called when new facility is built on the station. If it is the first facility
* it initializes also 'xy' and 'random_bits' members */
void Station::AddFacility(StationFacility new_facility_bit, TileIndex facil_xy)
{
if (this->facilities == FACIL_NONE) {
this->xy = facil_xy;
this->random_bits = Random();
}
this->facilities |= new_facility_bit;
this->owner = _current_company;
this->build_date = _date;
}
void Station::MarkDirty() const
{
if (this->sign.width_1 != 0) {
InvalidateWindowWidget(WC_STATION_VIEW, index, SVW_CAPTION);
/* We use ZOOM_LVL_MAX here, as every viewport can have an other zoom,
* and there is no way for us to know which is the biggest. So make the
* biggest area dirty, and we are safe for sure. */
MarkAllViewportsDirty(
this->sign.left - 6,
this->sign.top,
this->sign.left + ScaleByZoom(this->sign.width_1 + 12, ZOOM_LVL_MAX),
this->sign.top + ScaleByZoom(12, ZOOM_LVL_MAX));
}
}
void Station::MarkTilesDirty(bool cargo_change) const
{
TileIndex tile = this->train_tile;
int w, h;
if (tile == INVALID_TILE) return;
/* cargo_change is set if we're refreshing the tiles due to cargo moving
* around. */
if (cargo_change) {
/* Don't waste time updating if there are no custom station graphics
* that might change. Even if there are custom graphics, they might
* not change. Unfortunately we have no way of telling. */
if (this->num_specs == 0) return;
}
for (h = 0; h < trainst_h; h++) {
for (w = 0; w < trainst_w; w++) {
if (this->TileBelongsToRailStation(tile)) {
MarkTileDirtyByTile(tile);
}
tile += TileDiffXY(1, 0);
}
tile += TileDiffXY(-w, 1);
}
}
/** Obtain the length of a platform
* @pre tile must be a railway station tile
* @param tile A tile that contains the platform in question
* @return The length of the platform
*/
uint Station::GetPlatformLength(TileIndex tile) const
{
assert(this->TileBelongsToRailStation(tile));
TileIndexDiff delta = (GetRailStationAxis(tile) == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
TileIndex t = tile;
uint len = 0;
do {
t -= delta;
len++;
} while (IsCompatibleTrainStationTile(t, tile));
t = tile;
do {
t += delta;
len++;
} while (IsCompatibleTrainStationTile(t, tile));
return len - 1;
}
/** Determines the REMAINING length of a platform, starting at (and including)
* the given tile.
* @param tile the tile from which to start searching. Must be a railway station tile
* @param dir The direction in which to search.
* @return The platform length
*/
uint Station::GetPlatformLength(TileIndex tile, DiagDirection dir) const
{
TileIndex start_tile = tile;
uint length = 0;
assert(IsRailwayStationTile(tile));
assert(dir < DIAGDIR_END);
do {
length ++;
tile += TileOffsByDiagDir(dir);
} while (IsCompatibleTrainStationTile(tile, start_tile));
return length;
}
/** Determines the catchment radius of the station
* @return The radius
*/
uint Station::GetCatchmentRadius() const
{
uint ret = CA_NONE;
if (_settings_game.station.modified_catchment) {
if (this->bus_stops != NULL) ret = max<uint>(ret, CA_BUS);
if (this->truck_stops != NULL) ret = max<uint>(ret, CA_TRUCK);
if (this->train_tile != INVALID_TILE) ret = max<uint>(ret, CA_TRAIN);
if (this->dock_tile != INVALID_TILE) ret = max<uint>(ret, CA_DOCK);
if (this->airport_tile != INVALID_TILE) ret = max<uint>(ret, this->Airport()->catchment);
} else {
if (this->bus_stops != NULL || this->truck_stops != NULL || this->train_tile != INVALID_TILE || this->dock_tile != INVALID_TILE || this->airport_tile != INVALID_TILE) {
ret = CA_UNMODIFIED;
}
}
return ret;
}
/** Rect and pointer to IndustryVector */
struct RectAndIndustryVector {
Rect rect;
IndustryVector *industries_near;
};
/**
* Callback function for Station::RecomputeIndustriesNear()
* Tests whether tile is an industry and possibly adds
* the industry to station's industries_near list.
* @param ind_tile tile to check
* @param user_data pointer to RectAndIndustryVector
* @return always false, we want to search all tiles
*/
static bool FindIndustryToDeliver(TileIndex ind_tile, void *user_data)
{
/* Only process industry tiles */
if (!IsTileType(ind_tile, MP_INDUSTRY)) return false;
RectAndIndustryVector *riv = (RectAndIndustryVector *)user_data;
Industry *ind = GetIndustryByTile(ind_tile);
/* Don't check further if this industry is already in the list */
if (riv->industries_near->Contains(ind)) return false;
/* Only process tiles in the station acceptance rectangle */
int x = TileX(ind_tile);
int y = TileY(ind_tile);
if (x < riv->rect.left || x > riv->rect.right || y < riv->rect.top || y > riv->rect.bottom) return false;
/* Include only industries that can accept cargo */
uint cargo_index;
for (cargo_index = 0; cargo_index < lengthof(ind->accepts_cargo); cargo_index++) {
if (ind->accepts_cargo[cargo_index] != CT_INVALID) break;
}
if (cargo_index >= lengthof(ind->accepts_cargo)) return false;
*riv->industries_near->Append() = ind;
return false;
}
/**
* Recomputes Station::industries_near, list of industries possibly
* accepting cargo in station's catchment radius
*/
void Station::RecomputeIndustriesNear()
{
this->industries_near.Reset();
if (this->rect.IsEmpty()) return;
/* Compute acceptance rectangle */
int catchment_radius = this->GetCatchmentRadius();
RectAndIndustryVector riv = {
{
max<int>(this->rect.left - catchment_radius, 0),
max<int>(this->rect.top - catchment_radius, 0),
min<int>(this->rect.right + catchment_radius, MapMaxX()),
min<int>(this->rect.bottom + catchment_radius, MapMaxY())
},
&this->industries_near
};
/* Compute maximum extent of acceptance rectangle wrt. station sign */
TileIndex start_tile = this->xy;
uint max_radius = max(
max(DistanceManhattan(start_tile, TileXY(riv.rect.left , riv.rect.top)), DistanceManhattan(start_tile, TileXY(riv.rect.left , riv.rect.bottom))),
max(DistanceManhattan(start_tile, TileXY(riv.rect.right, riv.rect.top)), DistanceManhattan(start_tile, TileXY(riv.rect.right, riv.rect.bottom)))
);
CircularTileSearch(&start_tile, 2 * max_radius + 1, &FindIndustryToDeliver, &riv);
}
/**
* Recomputes Station::industries_near for all stations
*/
/* static */ void Station::RecomputeIndustriesNearForAll()
{
Station *st;
FOR_ALL_STATIONS(st) st->RecomputeIndustriesNear();
}
/************************************************************************/
/* StationRect implementation */
/************************************************************************/
StationRect::StationRect()
{
this->MakeEmpty();
}
void StationRect::MakeEmpty()
{
this->left = this->top = this->right = this->bottom = 0;
}
/**
* Determines whether a given point (x, y) is within a certain distance of
* the station rectangle.
* @note x and y are in Tile coordinates
* @param x X coordinate
* @param y Y coordinate
* @param distance The maxmium distance a point may have (L1 norm)
* @return true if the point is within distance tiles of the station rectangle
*/
bool StationRect::PtInExtendedRect(int x, int y, int distance) const
{
return
this->left - distance <= x &&
x <= this->right + distance &&
this->top - distance <= y &&
y <= this->bottom + distance;
}
bool StationRect::IsEmpty() const
{
return this->left == 0 || this->left > this->right || this->top > this->bottom;
}
bool StationRect::BeforeAddTile(TileIndex tile, StationRectMode mode)
{
int x = TileX(tile);
int y = TileY(tile);
if (IsEmpty()) {
/* we are adding the first station tile */
if (mode != ADD_TEST) {
this->left = this->right = x;
this->top = this->bottom = y;
}
} else if (!PtInExtendedRect(x, y)) {
/* current rect is not empty and new point is outside this rect
* make new spread-out rectangle */
Rect new_rect = {min(x, this->left), min(y, this->top), max(x, this->right), max(y, this->bottom)};
/* check new rect dimensions against preset max */
int w = new_rect.right - new_rect.left + 1;
int h = new_rect.bottom - new_rect.top + 1;
if (mode != ADD_FORCE && (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread)) {
assert(mode != ADD_TRY);
_error_message = STR_ERROR_STATION_TOO_SPREAD_OUT;
return false;
}
/* spread-out ok, return true */
if (mode != ADD_TEST) {
/* we should update the station rect */
*this = new_rect;
}
} else {
; // new point is inside the rect, we don't need to do anything
}
return true;
}
bool StationRect::BeforeAddRect(TileIndex tile, int w, int h, StationRectMode mode)
{
return (mode == ADD_FORCE || (w <= _settings_game.station.station_spread && h <= _settings_game.station.station_spread)) && // important when the old rect is completely inside the new rect, resp. the old one was empty
this->BeforeAddTile(tile, mode) && this->BeforeAddTile(TILE_ADDXY(tile, w - 1, h - 1), mode);
}
/**
* Check whether station tiles of the given station id exist in the given rectangle
* @param st_id Station ID to look for in the rectangle
* @param left_a Minimal tile X edge of the rectangle
* @param top_a Minimal tile Y edge of the rectangle
* @param right_a Maximal tile X edge of the rectangle (inclusive)
* @param bottom_a Maximal tile Y edge of the rectangle (inclusive)
* @return \c true if a station tile with the given \a st_id exists in the rectangle, \c false otherwise
*/
/* static */ bool StationRect::ScanForStationTiles(StationID st_id, int left_a, int top_a, int right_a, int bottom_a)
{
TileIndex top_left = TileXY(left_a, top_a);
int width = right_a - left_a + 1;
int height = bottom_a - top_a + 1;
BEGIN_TILE_LOOP(tile, width, height, top_left)
if (IsTileType(tile, MP_STATION) && GetStationIndex(tile) == st_id) return true;
END_TILE_LOOP(tile, width, height, top_left);
return false;
}
bool StationRect::AfterRemoveTile(Station *st, TileIndex tile)
{
int x = TileX(tile);
int y = TileY(tile);
/* look if removed tile was on the bounding rect edge
* and try to reduce the rect by this edge
* do it until we have empty rect or nothing to do */
for (;;) {
/* check if removed tile is on rect edge */
bool left_edge = (x == this->left);
bool right_edge = (x == this->right);
bool top_edge = (y == this->top);
bool bottom_edge = (y == this->bottom);
/* can we reduce the rect in either direction? */
bool reduce_x = ((left_edge || right_edge) && !ScanForStationTiles(st->index, x, this->top, x, this->bottom));
bool reduce_y = ((top_edge || bottom_edge) && !ScanForStationTiles(st->index, this->left, y, this->right, y));
if (!(reduce_x || reduce_y)) break; // nothing to do (can't reduce)
if (reduce_x) {
/* reduce horizontally */
if (left_edge) {
/* move left edge right */
this->left = x = x + 1;
} else {
/* move right edge left */
this->right = x = x - 1;
}
}
if (reduce_y) {
/* reduce vertically */
if (top_edge) {
/* move top edge down */
this->top = y = y + 1;
} else {
/* move bottom edge up */
this->bottom = y = y - 1;
}
}
if (left > right || top > bottom) {
/* can't continue, if the remaining rectangle is empty */
this->MakeEmpty();
return true; // empty remaining rect
}
}
return false; // non-empty remaining rect
}
bool StationRect::AfterRemoveRect(Station *st, TileIndex tile, int w, int h)
{
assert(PtInExtendedRect(TileX(tile), TileY(tile)));
assert(PtInExtendedRect(TileX(tile) + w - 1, TileY(tile) + h - 1));
bool empty = this->AfterRemoveTile(st, tile);
if (w != 1 || h != 1) empty = empty || AfterRemoveTile(st, TILE_ADDXY(tile, w - 1, h - 1));
return empty;
}
StationRect& StationRect::operator = (Rect src)
{
this->left = src.left;
this->top = src.top;
this->right = src.right;
this->bottom = src.bottom;
return *this;
}
void InitializeStations()
{
_station_pool.CleanPool();
}
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