Files @ r5708:7ae0ffd22f15
Branch filter:

Location: cpp/openttd-patchpack/source/src/station.cpp

celestar
(svn r8185) -Codechange: Equipped Roadstops with new/delete operators and gave them proper constructors/destructors (Thanks to KUDr for a nice interactive C++ lesson)
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
/* $Id$ */

/** @file station_cmd.c */

#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "debug.h"
#include "functions.h"
#include "station_map.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "map.h"
#include "tile.h"
#include "station.h"
#include "gfx.h"
#include "window.h"
#include "viewport.h"
#include "command.h"
#include "town.h"
#include "vehicle.h"
#include "news.h"
#include "saveload.h"
#include "economy.h"
#include "player.h"
#include "airport.h"
#include "sprite.h"
#include "depot.h"
#include "train.h"
#include "water_map.h"
#include "industry_map.h"
#include "newgrf_callbacks.h"
#include "newgrf_station.h"
#include "yapf/yapf.h"
#include "date.h"
#include "helpers.hpp"

Station::Station(TileIndex tile)
{
	DEBUG(station, cDebugCtorLevel, "I+%3d", index);

	xy = tile;
	airport_tile = dock_tile = train_tile = 0;
	bus_stops = truck_stops = NULL;
	had_vehicle_of_type = 0;
	time_since_load = 255;
	time_since_unload = 255;
	delete_ctr = 0;
	facilities = 0;

	last_vehicle_type = VEH_Invalid;

	random_bits = Random();
	waiting_triggers = 0;
}

/**
	* 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.
	* @param st Station to be deleted
	*/
Station::~Station()
{
	DEBUG(station, cDebugCtorLevel, "I-%3d", index);

	DeleteName(string_id);
	MarkDirty();
	RebuildStationLists();
	InvalidateWindowClasses(WC_STATION_LIST);

	DeleteWindowById(WC_STATION_VIEW, index);

	/* Now delete all orders that go to the station */
	RemoveOrderFromAllVehicles(OT_GOTO_STATION, index);

	/* Subsidies need removal as well */
	DeleteSubsidyWithStation(index);

	free(speclist);
	xy = 0;
}

void* Station::operator new(size_t size)
{
	Station *st = AllocateRaw();
	return st;
}

void* Station::operator new(size_t size, int st_idx)
{
	if (!AddBlockIfNeeded(&_Station_pool, st_idx))
		error("Stations: failed loading savegame: too many stations");

	Station *st = GetStation(st_idx);
	return st;
}

void Station::operator delete(void *p)
{
}

void Station::operator delete(void *p, int st_idx)
{
}

void Station::MarkDirty() const
{
	if (sign.width_1 != 0) {
		InvalidateWindowWidget(WC_STATION_VIEW, index, 1);

		MarkAllViewportsDirty(
			sign.left - 6,
			sign.top,
			sign.left + (sign.width_1 << 2) + 12,
			sign.top + 48);
	}
}

void Station::MarkTilesDirty() const
{
	TileIndex tile = train_tile;
	int w, h;

	/* XXX No station is recorded as 0, not INVALID_TILE... */
	if (tile == 0) return;

	for (h = 0; h < trainst_h; h++) {
		for (w = 0; w < trainst_w; w++) {
			if (TileBelongsToRailStation(tile)) {
				MarkTileDirtyByTile(tile);
			}
			tile += TileDiffXY(1, 0);
		}
		tile += TileDiffXY(-w, 1);
	}
}

bool Station::TileBelongsToRailStation(TileIndex tile) const
{
	return IsTileType(tile, MP_STATION) && GetStationIndex(tile) == index && IsRailwayStation(tile);
}

/*static*/ Station *Station::AllocateRaw(void)
{
	Station *st = NULL;

	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
	 * TODO - This is just a temporary stage, this will be removed. */
	for (st = GetStation(0); st != NULL; st = (st->index + 1U < GetStationPoolSize()) ? GetStation(st->index + 1U) : NULL) {
		if (!IsValidStation(st)) {
			StationID index = st->index;

			memset(st, 0, sizeof(Station));
			st->index = index;
			return st;
		}
	}

	/* Check if we can add a block to the pool */
	if (AddBlockToPool(&_Station_pool)) return AllocateRaw();

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;
	return NULL;
}



/************************************************************************/
/*                     StationRect implementation                       */
/************************************************************************/

StationRect::StationRect()
{
	MakeEmpty();
}

void StationRect::MakeEmpty()
{
	left = top = right = bottom = 0;
}

bool StationRect::PtInRectXY(int x, int y) const
{
	return (left <= x && x <= right && top <= y && y <= bottom);
}

bool StationRect::IsEmpty() const
{
	return (left == 0 || left > right || top > 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 */
		left = right = x;
		top = bottom = y;

	} else if (!PtInRectXY(x, y)) {
		/* current rect is not empty and new point is outside this rect */
		/* make new spread-out rectangle */
		Rect new_rect = {min(x, left), min(y, top), max(x, right), max(y, 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 > _patches.station_spread || h > _patches.station_spread)) {
			assert(mode != ADD_TRY);
			_error_message = STR_306C_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 BeforeAddTile(tile, mode) && BeforeAddTile(TILE_ADDXY(tile, w - 1, h - 1), mode);
}

/*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 == left);
		bool right_edge = (x == right);
		bool top_edge = (y == top);
		bool bottom_edge = (y == bottom);

		/* can we reduce the rect in either direction? */
		bool reduce_x = ((left_edge || right_edge) && !ScanForStationTiles(st->index, x, top, x, bottom));
		bool reduce_y = ((top_edge || bottom_edge) && !ScanForStationTiles(st->index, left, y, 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 */
				left = x = x + 1;
			} else {
				/* move right edge left */
				right = x = x - 1;
			}
		}
		if (reduce_y) {
			/* reduce vertically */
			if (top_edge) {
				/* move top edge down */
				top = y = y + 1;
			} else {
				/* move bottom edge up */
				bottom = y = y - 1;
			}
		}

		if (left > right || top > bottom) {
			/* can't continue, if the remaining rectangle is empty */
			MakeEmpty();
			return true; // empty remaining rect
		}
	}
	return false; // non-empty remaining rect
}

bool StationRect::AfterRemoveRect(Station *st, TileIndex tile, int w, int h)
{
	assert(PtInRectXY(TileX(tile), TileY(tile)));
	assert(PtInRectXY(TileX(tile) + w - 1, TileY(tile) + h - 1));

	bool empty = 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)
{
	left = src.left;
	top = src.top;
	right = src.right;
	bottom = src.bottom;
	return *this;
}


/************************************************************************/
/*                     RoadStop implementation                          */
/************************************************************************/

/** Allocates a new RoadStop onto the pool, or recycles an unsed one
 *  @return a pointer to the new roadstop
 */
void *RoadStop::operator new(size_t size)
{
	RoadStop *rs = AllocateRaw();
	return rs;
}

/** Gets a RoadStop with a given index and allocates it when needed
  * @return a pointer to the roadstop
  */
void *RoadStop::operator new(size_t size, int index)
{
	if (!AddBlockIfNeeded(&_RoadStop_pool, index)) {
		error("RoadStops: failed loading savegame: too many RoadStops");
	}

	RoadStop *rs = GetRoadStop(index);
	return rs;
}

void RoadStop::operator delete(void *p)
{
}

void RoadStop::operator delete(void *p, int index)
{
}

/** Initializes a RoadStop */
RoadStop::RoadStop(TileIndex tile, StationID index)
{
	DEBUG(ms, cDebugCtorLevel,  "I+%3d at %d[0x%x]", index, tile, tile);
	xy = tile;
	used = true;
	status = 3; //stop is free
	next = NULL;
	prev = NULL;
	station = index;
	num_vehicles = 0;
}

/** De-Initializes a RoadStops. This includes clearing all slots that vehicles might
  * have and unlinks it from the linked list of road stops at the given station
  */
RoadStop::~RoadStop()
{
	Vehicle *v;

	/* Clear the slot assignment of all vehicles heading for this road stop */
	if (num_vehicles != 0) {
		FOR_ALL_VEHICLES(v) {
			if (v->type == VEH_Road && v->u.road.slot == this) ClearSlot(v);
		}
	}
	assert(num_vehicles == 0);

	if (prev != NULL) prev->next = next;
	if (next != NULL) next->prev = prev;

	used = false;
	DEBUG(ms, cDebugCtorLevel , "I- at %3d%d[0x%x]", station, xy, xy);

	xy = INVALID_TILE;
	station = INVALID_STATION;
}


/** Low-level function for allocating a RoadStop on the pool */
RoadStop *RoadStop::AllocateRaw( void )
{
	RoadStop *rs;

	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
	 * TODO - This is just a temporary stage, this will be removed. */
	for (rs = GetRoadStop(0); rs != NULL; rs = (rs->index + 1U < GetRoadStopPoolSize()) ? GetRoadStop(rs->index + 1U) : NULL) {
		if (!IsValidRoadStop(rs)) {
			RoadStopID index = rs->index;

			memset(rs, 0, sizeof(*rs));
			rs->index = index;

			return rs;
		}
	}

	/* Check if we can add a block to the pool */
	if (AddBlockToPool(&_RoadStop_pool)) return AllocateRaw();

	return NULL;
}