summaryrefslogtreecommitdiff
path: root/src/group_cmd.cpp
blob: be80df13599b1f0531791d2846b729ac14b9b464 (plain)
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
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
/* $Id$ */

/*
 * 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 group_cmd.cpp Handling of the engine groups */

#include "stdafx.h"
#include "cmd_helper.h"
#include "command_func.h"
#include "group.h"
#include "train.h"
#include "vehicle_gui.h"
#include "vehiclelist.h"
#include "window_func.h"
#include "vehicle_func.h"
#include "autoreplace_base.h"
#include "autoreplace_func.h"
#include "string_func.h"
#include "company_func.h"
#include "core/pool_func.hpp"
#include "order_backup.h"

#include "table/strings.h"

GroupID _new_group_id;

GroupPool _group_pool("Group");
INSTANTIATE_POOL_METHODS(Group)

GroupStatistics::GroupStatistics()
{
	this->num_engines = CallocT<uint16>(Engine::GetPoolSize());
}

GroupStatistics::~GroupStatistics()
{
	free(this->num_engines);
}

/**
 * Clear all caches.
 */
void GroupStatistics::Clear()
{
	this->num_vehicle = 0;

	/* This is also called when NewGRF change. So the number of engines might have changed. Reallocate. */
	free(this->num_engines);
	this->num_engines = CallocT<uint16>(Engine::GetPoolSize());
}

/**
 * Returns the GroupStatistics for a specific group.
 * @param company Owner of the group.
 * @param id_g    GroupID of the group.
 * @param type    VehicleType of the vehicles in the group.
 * @return Statistics for the group.
 */
/* static */ GroupStatistics &GroupStatistics::Get(CompanyID company, GroupID id_g, VehicleType type)
{
	if (Group::IsValidID(id_g)) {
		Group *g = Group::Get(id_g);
		assert(g->owner == company);
		assert(g->vehicle_type == type);
		return g->statistics;
	}

	NOT_REACHED();
}

/**
 * Returns the GroupStatistic for the group of a vehicle.
 * @param v Vehicle.
 * @return GroupStatistics for the group of the vehicle.
 */
/* static */ GroupStatistics &GroupStatistics::Get(const Vehicle *v)
{
	return GroupStatistics::Get(v->owner, v->group_id, v->type);
}

/**
 * Update all caches after loading a game, changing NewGRF etc..
 */
/* static */ void GroupStatistics::UpdateAfterLoad()
{
	size_t engines = Engine::GetPoolSize();

	/* Set up the engine count for all companies */
	Company *c;
	FOR_ALL_COMPANIES(c) {
		free(c->num_engines);
		c->num_engines = CallocT<EngineID>(engines);
	}

	/* Recalculate */
	Group *g;
	FOR_ALL_GROUPS(g) {
		g->statistics.Clear();
	}

	const Vehicle *v;
	FOR_ALL_VEHICLES(v) {
		if (!v->IsEngineCountable()) continue;

		assert(v->engine_type < engines);

		Company::Get(v->owner)->num_engines[v->engine_type]++;

		GroupStatistics::CountEngine(v, 1);
		if (v->IsPrimaryVehicle()) GroupStatistics::CountVehicle(v, 1);
	}
}

/**
 * Update num_vehicle when adding or removing a vehicle.
 * @param v Vehicle to count.
 * @param delta +1 to add, -1 to remove.
 */
/* static */ void GroupStatistics::CountVehicle(const Vehicle *v, int delta)
{
	assert(delta == 1 || delta == -1);
	if (!Group::IsValidID(v->group_id)) return;

	GroupStatistics &stats = GroupStatistics::Get(v);

	stats.num_vehicle += delta;
}

/**
 * Update num_engines when adding/removing an engine.
 * @param v Engine to count.
 * @param delta +1 to add, -1 to remove.
 */
/* static */ void GroupStatistics::CountEngine(const Vehicle *v, int delta)
{
	assert(delta == 1 || delta == -1);
	if (!Group::IsValidID(v->group_id)) return;
	GroupStatistics::Get(v).num_engines[v->engine_type] += delta;
}


/**
 * Update the num engines of a groupID. Decrease the old one and increase the new one
 * @note called in SetTrainGroupID and UpdateTrainGroupID
 * @param v     Vehicle we have to update
 * @param old_g index of the old group
 * @param new_g index of the new group
 */
static inline void UpdateNumEngineGroup(const Vehicle *v, GroupID old_g, GroupID new_g)
{
	if (old_g != new_g) {
		/* Decrease the num engines in the old group */
		if (Group::IsValidID(old_g)) GroupStatistics::Get(v->owner, old_g, v->type).num_engines[v->engine_type]--;

		/* Increase the num engines in the new group */
		if (Group::IsValidID(new_g)) GroupStatistics::Get(v->owner, new_g, v->type).num_engines[v->engine_type]++;
	}
}



Group::Group(Owner owner)
{
	this->owner = owner;
}

Group::~Group()
{
	free(this->name);
}


/**
 * Create a new vehicle group.
 * @param tile unused
 * @param flags type of operation
 * @param p1   vehicle type
 * @param p2   unused
 * @param text unused
 * @return the cost of this operation or an error
 */
CommandCost CmdCreateGroup(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	VehicleType vt = Extract<VehicleType, 0, 3>(p1);
	if (!IsCompanyBuildableVehicleType(vt)) return CMD_ERROR;

	if (!Group::CanAllocateItem()) return CMD_ERROR;

	if (flags & DC_EXEC) {
		Group *g = new Group(_current_company);
		g->replace_protection = false;
		g->vehicle_type = vt;

		_new_group_id = g->index;

		InvalidateWindowData(GetWindowClassForVehicleType(vt), VehicleListIdentifier(VL_GROUP_LIST, vt, _current_company).Pack());
	}

	return CommandCost();
}


/**
 * Add all vehicles in the given group to the default group and then deletes the group.
 * @param tile unused
 * @param flags type of operation
 * @param p1   index of array group
 *      - p1 bit 0-15 : GroupID
 * @param p2   unused
 * @param text unused
 * @return the cost of this operation or an error
 */
CommandCost CmdDeleteGroup(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	Group *g = Group::GetIfValid(p1);
	if (g == NULL || g->owner != _current_company) return CMD_ERROR;

	if (flags & DC_EXEC) {
		Vehicle *v;

		/* Add all vehicles belong to the group to the default group */
		FOR_ALL_VEHICLES(v) {
			if (v->group_id == g->index && v->type == g->vehicle_type) v->group_id = DEFAULT_GROUP;
		}

		/* Update backupped orders if needed */
		OrderBackup::ClearGroup(g->index);

		/* If we set an autoreplace for the group we delete, remove it. */
		if (_current_company < MAX_COMPANIES) {
			Company *c;
			EngineRenew *er;

			c = Company::Get(_current_company);
			FOR_ALL_ENGINE_RENEWS(er) {
				if (er->group_id == g->index) RemoveEngineReplacementForCompany(c, er->from, g->index, flags);
			}
		}

		VehicleType vt = g->vehicle_type;

		/* Delete the Replace Vehicle Windows */
		DeleteWindowById(WC_REPLACE_VEHICLE, g->vehicle_type);
		delete g;

		InvalidateWindowData(GetWindowClassForVehicleType(vt), VehicleListIdentifier(VL_GROUP_LIST, vt, _current_company).Pack());
	}

	return CommandCost();
}

static bool IsUniqueGroupName(const char *name)
{
	const Group *g;

	FOR_ALL_GROUPS(g) {
		if (g->name != NULL && strcmp(g->name, name) == 0) return false;
	}

	return true;
}

/**
 * Rename a group
 * @param tile unused
 * @param flags type of operation
 * @param p1   index of array group
 *   - p1 bit 0-15 : GroupID
 * @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 CmdRenameGroup(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	Group *g = Group::GetIfValid(p1);
	if (g == NULL || g->owner != _current_company) return CMD_ERROR;

	bool reset = StrEmpty(text);

	if (!reset) {
		if (Utf8StringLength(text) >= MAX_LENGTH_GROUP_NAME_CHARS) return CMD_ERROR;
		if (!IsUniqueGroupName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
	}

	if (flags & DC_EXEC) {
		/* Delete the old name */
		free(g->name);
		/* Assign the new one */
		g->name = reset ? NULL : strdup(text);

		InvalidateWindowData(GetWindowClassForVehicleType(g->vehicle_type), VehicleListIdentifier(VL_GROUP_LIST, g->vehicle_type, _current_company).Pack());
	}

	return CommandCost();
}


/**
 * Add a vehicle to a group
 * @param tile unused
 * @param flags type of operation
 * @param p1   index of array group
 *   - p1 bit 0-15 : GroupID
 * @param p2   vehicle to add to a group
 *   - p2 bit 0-19 : VehicleID
 * @param text unused
 * @return the cost of this operation or an error
 */
CommandCost CmdAddVehicleGroup(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	Vehicle *v = Vehicle::GetIfValid(p2);
	GroupID new_g = p1;

	if (v == NULL || (!Group::IsValidID(new_g) && !IsDefaultGroupID(new_g))) return CMD_ERROR;

	if (Group::IsValidID(new_g)) {
		Group *g = Group::Get(new_g);
		if (g->owner != _current_company || g->vehicle_type != v->type) return CMD_ERROR;
	}

	if (v->owner != _current_company || !v->IsPrimaryVehicle()) return CMD_ERROR;

	if (flags & DC_EXEC) {
		GroupStatistics::CountVehicle(v, -1);

		switch (v->type) {
			default: NOT_REACHED();
			case VEH_TRAIN:
				SetTrainGroupID(Train::From(v), new_g);
				break;
			case VEH_ROAD:
			case VEH_SHIP:
			case VEH_AIRCRAFT:
				if (v->IsEngineCountable()) UpdateNumEngineGroup(v, v->group_id, new_g);
				v->group_id = new_g;
				break;
		}

		GroupStatistics::CountVehicle(v, 1);

		/* Update the Replace Vehicle Windows */
		SetWindowDirty(WC_REPLACE_VEHICLE, v->type);
		InvalidateWindowData(GetWindowClassForVehicleType(v->type), VehicleListIdentifier(VL_GROUP_LIST, v->type, _current_company).Pack());
	}

	return CommandCost();
}

/**
 * Add all shared vehicles of all vehicles from a group
 * @param tile unused
 * @param flags type of operation
 * @param p1   index of group array
 *  - p1 bit 0-15 : GroupID
 * @param p2   type of vehicles
 * @param text unused
 * @return the cost of this operation or an error
 */
CommandCost CmdAddSharedVehicleGroup(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	VehicleType type = Extract<VehicleType, 0, 3>(p2);
	GroupID id_g = p1;
	if (!Group::IsValidID(id_g) || !IsCompanyBuildableVehicleType(type)) return CMD_ERROR;

	if (flags & DC_EXEC) {
		Vehicle *v;

		/* Find the first front engine which belong to the group id_g
		 * then add all shared vehicles of this front engine to the group id_g */
		FOR_ALL_VEHICLES(v) {
			if (v->type == type && v->IsPrimaryVehicle()) {
				if (v->group_id != id_g) continue;

				/* For each shared vehicles add it to the group */
				for (Vehicle *v2 = v->FirstShared(); v2 != NULL; v2 = v2->NextShared()) {
					if (v2->group_id != id_g) DoCommand(tile, id_g, v2->index, flags, CMD_ADD_VEHICLE_GROUP, text);
				}
			}
		}

		InvalidateWindowData(GetWindowClassForVehicleType(type), VehicleListIdentifier(VL_GROUP_LIST, type, _current_company).Pack());
	}

	return CommandCost();
}


/**
 * Remove all vehicles from a group
 * @param tile unused
 * @param flags type of operation
 * @param p1   index of group array
 * - p1 bit 0-15 : GroupID
 * @param p2   type of vehicles
 * @param text unused
 * @return the cost of this operation or an error
 */
CommandCost CmdRemoveAllVehiclesGroup(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	GroupID old_g = p1;
	Group *g = Group::GetIfValid(old_g);
	VehicleType type = Extract<VehicleType, 0, 3>(p2);

	if (g == NULL || g->owner != _current_company || !IsCompanyBuildableVehicleType(type)) return CMD_ERROR;

	if (flags & DC_EXEC) {
		Vehicle *v;

		/* Find each Vehicle that belongs to the group old_g and add it to the default group */
		FOR_ALL_VEHICLES(v) {
			if (v->type == type && v->IsPrimaryVehicle()) {
				if (v->group_id != old_g) continue;

				/* Add The Vehicle to the default group */
				DoCommand(tile, DEFAULT_GROUP, v->index, flags, CMD_ADD_VEHICLE_GROUP, text);
			}
		}

		InvalidateWindowData(GetWindowClassForVehicleType(type), VehicleListIdentifier(VL_GROUP_LIST, type, _current_company).Pack());
	}

	return CommandCost();
}


/**
 * (Un)set global replace protection from a group
 * @param tile unused
 * @param flags type of operation
 * @param p1   index of group array
 * - p1 bit 0-15 : GroupID
 * @param p2
 * - p2 bit 0    : 1 to set or 0 to clear protection.
 * @param text unused
 * @return the cost of this operation or an error
 */
CommandCost CmdSetGroupReplaceProtection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	Group *g = Group::GetIfValid(p1);
	if (g == NULL || g->owner != _current_company) return CMD_ERROR;

	if (flags & DC_EXEC) {
		g->replace_protection = HasBit(p2, 0);

		InvalidateWindowData(GetWindowClassForVehicleType(g->vehicle_type), VehicleListIdentifier(VL_GROUP_LIST, g->vehicle_type, _current_company).Pack());
		InvalidateWindowData(WC_REPLACE_VEHICLE, g->vehicle_type);
	}

	return CommandCost();
}

/**
 * Decrease the num_vehicle variable before delete an front engine from a group
 * @note Called in CmdSellRailWagon and DeleteLasWagon,
 * @param v     FrontEngine of the train we want to remove.
 */
void RemoveVehicleFromGroup(const Vehicle *v)
{
	if (!v->IsPrimaryVehicle()) return;

	if (!IsDefaultGroupID(v->group_id)) GroupStatistics::CountVehicle(v, -1);
}


/**
 * Affect the groupID of a train to new_g.
 * @note called in CmdAddVehicleGroup and CmdMoveRailVehicle
 * @param v     First vehicle of the chain.
 * @param new_g index of array group
 */
void SetTrainGroupID(Train *v, GroupID new_g)
{
	if (!Group::IsValidID(new_g) && !IsDefaultGroupID(new_g)) return;

	assert(v->IsFrontEngine() || IsDefaultGroupID(new_g));

	for (Vehicle *u = v; u != NULL; u = u->Next()) {
		if (u->IsEngineCountable()) UpdateNumEngineGroup(u, u->group_id, new_g);

		u->group_id = new_g;
	}

	/* Update the Replace Vehicle Windows */
	SetWindowDirty(WC_REPLACE_VEHICLE, VEH_TRAIN);
}


/**
 * Recalculates the groupID of a train. Should be called each time a vehicle is added
 * to/removed from the chain,.
 * @note this needs to be called too for 'wagon chains' (in the depot, without an engine)
 * @note Called in CmdBuildRailVehicle, CmdBuildRailWagon, CmdMoveRailVehicle, CmdSellRailWagon
 * @param v First vehicle of the chain.
 */
void UpdateTrainGroupID(Train *v)
{
	assert(v->IsFrontEngine() || v->IsFreeWagon());

	GroupID new_g = v->IsFrontEngine() ? v->group_id : (GroupID)DEFAULT_GROUP;
	for (Vehicle *u = v; u != NULL; u = u->Next()) {
		if (u->IsEngineCountable()) UpdateNumEngineGroup(u, u->group_id, new_g);

		u->group_id = new_g;
	}

	/* Update the Replace Vehicle Windows */
	SetWindowDirty(WC_REPLACE_VEHICLE, VEH_TRAIN);
}

/**
 * Get the number of engines with EngineID id_e in the group with GroupID
 * id_g
 * @param company The company the group belongs to
 * @param id_g The GroupID of the group used
 * @param id_e The EngineID of the engine to count
 * @return The number of engines with EngineID id_e in the group
 */
uint GetGroupNumEngines(CompanyID company, GroupID id_g, EngineID id_e)
{
	if (Group::IsValidID(id_g)) return Group::Get(id_g)->statistics.num_engines[id_e];

	uint num = Company::Get(company)->num_engines[id_e];
	if (!IsDefaultGroupID(id_g)) return num;

	const Group *g;
	FOR_ALL_GROUPS(g) {
		if (g->owner == company) num -= g->statistics.num_engines[id_e];
	}
	return num;
}

void RemoveAllGroupsForCompany(const CompanyID company)
{
	Group *g;

	FOR_ALL_GROUPS(g) {
		if (company == g->owner) delete g;
	}
}