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
|
/* $Id$ */
/*
* 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 subsidy.cpp Handling of subsidies. */
#include "stdafx.h"
#include "company_func.h"
#include "industry.h"
#include "town.h"
#include "news_func.h"
#include "ai/ai.hpp"
#include "station_base.h"
#include "cargotype.h"
#include "strings_func.h"
#include "window_func.h"
#include "subsidy_base.h"
#include "subsidy_func.h"
#include "core/pool_func.hpp"
#include "core/random_func.hpp"
#include "table/strings.h"
SubsidyPool _subsidy_pool("Subsidy");
INSTANTIATE_POOL_METHODS(Subsidy)
/**
* Marks subsidy as awarded, creates news and AI event
* @param company awarded company
*/
void Subsidy::AwardTo(CompanyID company)
{
assert(!this->IsAwarded());
this->awarded = company;
this->remaining = SUBSIDY_CONTRACT_MONTHS;
char company_name[MAX_LENGTH_COMPANY_NAME_CHARS * MAX_CHAR_LENGTH];
SetDParam(0, _current_company);
GetString(company_name, STR_COMPANY_NAME, lastof(company_name));
char *cn = strdup(company_name);
/* Add a news item */
Pair reftype = SetupSubsidyDecodeParam(this, false);
InjectDParam(1);
SetDParamStr(0, cn);
AddNewsItem(
STR_NEWS_SERVICE_SUBSIDY_AWARDED_HALF + _settings_game.difficulty.subsidy_multiplier,
NS_SUBSIDIES,
(NewsReferenceType)reftype.a, this->src, (NewsReferenceType)reftype.b, this->dst,
cn
);
AI::BroadcastNewEvent(new AIEventSubsidyAwarded(this->index));
InvalidateWindowData(WC_SUBSIDIES_LIST, 0);
}
/**
* Initializes subsidies, files don't have to include subsidy_base,h this way
*/
void InitializeSubsidies()
{
_subsidy_pool.CleanPool();
}
Pair SetupSubsidyDecodeParam(const Subsidy *s, bool mode)
{
NewsReferenceType reftype1 = NR_NONE;
NewsReferenceType reftype2 = NR_NONE;
/* if mode is false, use the singular form */
const CargoSpec *cs = CargoSpec::Get(s->cargo_type);
SetDParam(0, mode ? cs->name : cs->name_single);
switch (s->src_type) {
case ST_INDUSTRY:
reftype1 = NR_INDUSTRY;
SetDParam(1, STR_INDUSTRY_NAME);
break;
case ST_TOWN:
reftype1 = NR_TOWN;
SetDParam(1, STR_TOWN_NAME);
break;
default: NOT_REACHED();
}
SetDParam(2, s->src);
switch (s->dst_type) {
case ST_INDUSTRY:
reftype2 = NR_INDUSTRY;
SetDParam(4, STR_INDUSTRY_NAME);
break;
case ST_TOWN:
reftype2 = NR_TOWN;
SetDParam(4, STR_TOWN_NAME);
break;
default: NOT_REACHED();
}
SetDParam(5, s->dst);
Pair p;
p.a = reftype1;
p.b = reftype2;
return p;
}
/**
* Sets a flag indicating that given town/industry is part of subsidised route.
* @param type is it a town or an industry?
* @param index index of town/industry
* @param flag flag to set
*/
static inline void SetPartOfSubsidyFlag(SourceType type, SourceID index, PartOfSubsidy flag)
{
switch (type) {
case ST_INDUSTRY: Industry::Get(index)->part_of_subsidy |= flag; return;
case ST_TOWN: Town::Get(index)->part_of_subsidy |= flag; return;
default: NOT_REACHED();
}
}
void RebuildSubsidisedSourceAndDestinationCache()
{
Town *t;
FOR_ALL_TOWNS(t) t->part_of_subsidy = POS_NONE;
Industry *i;
FOR_ALL_INDUSTRIES(i) i->part_of_subsidy = POS_NONE;
const Subsidy *s;
FOR_ALL_SUBSIDIES(s) {
SetPartOfSubsidyFlag(s->src_type, s->src, POS_SRC);
SetPartOfSubsidyFlag(s->dst_type, s->dst, POS_DST);
}
}
void DeleteSubsidyWith(SourceType type, SourceID index)
{
bool dirty = false;
Subsidy *s;
FOR_ALL_SUBSIDIES(s) {
if ((s->src_type == type && s->src == index) || (s->dst_type == type && s->dst == index)) {
delete s;
dirty = true;
}
}
if (dirty) {
InvalidateWindowData(WC_SUBSIDIES_LIST, 0);
RebuildSubsidisedSourceAndDestinationCache();
}
}
static bool CheckSubsidyDuplicate(CargoID cargo, SourceType src_type, SourceID src, SourceType dst_type, SourceID dst)
{
const Subsidy *s;
FOR_ALL_SUBSIDIES(s) {
if (s->cargo_type == cargo &&
s->src_type == src_type && s->src == src &&
s->dst_type == dst_type && s->dst == dst) {
return true;
}
}
return false;
}
static Subsidy *FindSubsidyPassengerRoute()
{
assert(Subsidy::CanAllocateItem());
const Town *src = Town::GetRandom();
if (src->population < SUBSIDY_PAX_MIN_POPULATION ||
src->pct_pass_transported > SUBSIDY_MAX_PCT_TRANSPORTED) {
return NULL;
}
const Town *dst = Town::GetRandom();
if (dst->population < SUBSIDY_PAX_MIN_POPULATION || src == dst) {
return NULL;
}
if (DistanceManhattan(src->xy, dst->xy) > SUBSIDY_MAX_DISTANCE) return NULL;
if (CheckSubsidyDuplicate(CT_PASSENGERS, ST_TOWN, src->index, ST_TOWN, dst->index)) return NULL;
Subsidy *s = new Subsidy();
s->cargo_type = CT_PASSENGERS;
s->src_type = s->dst_type = ST_TOWN;
s->src = src->index;
s->dst = dst->index;
return s;
}
static Subsidy *FindSubsidyCargoRoute()
{
assert(Subsidy::CanAllocateItem());
const Industry *i = Industry::GetRandom();
if (i == NULL) return NULL;
CargoID cargo;
uint trans, total;
/* Randomize cargo type */
if (i->produced_cargo[1] != CT_INVALID && HasBit(Random(), 0)) {
cargo = i->produced_cargo[1];
trans = i->last_month_pct_transported[1];
total = i->last_month_production[1];
} else {
cargo = i->produced_cargo[0];
trans = i->last_month_pct_transported[0];
total = i->last_month_production[0];
}
/* Quit if no production in this industry
* or if the pct transported is already large enough */
if (total == 0 || trans > SUBSIDY_MAX_PCT_TRANSPORTED || cargo == CT_INVALID) return NULL;
/* Don't allow passengers subsidies from industry */
const CargoSpec *cs = CargoSpec::Get(cargo);
if (cs->town_effect == TE_PASSENGERS) return NULL;
SourceType dst_type;
SourceID dst;
if (cs->town_effect == TE_GOODS || cs->town_effect == TE_FOOD) {
/* The destination is a town */
dst_type = ST_TOWN;
const Town *t = Town::GetRandom();
/* Only want big towns */
if (t->population < SUBSIDY_CARGO_MIN_POPULATION) return NULL;
if (DistanceManhattan(i->location.tile, t->xy) > SUBSIDY_MAX_DISTANCE) return NULL;
dst = t->index;
} else {
/* The destination is an industry */
dst_type = ST_INDUSTRY;
const Industry *i2 = Industry::GetRandom();
/* The industry must accept the cargo */
if (i2 == NULL || i == i2 ||
(cargo != i2->accepts_cargo[0] &&
cargo != i2->accepts_cargo[1] &&
cargo != i2->accepts_cargo[2])) {
return NULL;
}
if (DistanceManhattan(i->location.tile, i2->location.tile) > SUBSIDY_MAX_DISTANCE) return NULL;
dst = i2->index;
}
if (CheckSubsidyDuplicate(cargo, ST_INDUSTRY, i->index, dst_type, dst)) return NULL;
Subsidy *s = new Subsidy();
s->cargo_type = cargo;
s->src_type = ST_INDUSTRY;
s->src = i->index;
s->dst_type = dst_type;
s->dst = dst;
return s;
}
void SubsidyMonthlyLoop()
{
bool modified = false;
Subsidy *s;
FOR_ALL_SUBSIDIES(s) {
if (--s->remaining == 0) {
if (!s->IsAwarded()) {
Pair reftype = SetupSubsidyDecodeParam(s, true);
AddNewsItem(STR_NEWS_OFFER_OF_SUBSIDY_EXPIRED, NS_SUBSIDIES, (NewsReferenceType)reftype.a, s->src, (NewsReferenceType)reftype.b, s->dst);
AI::BroadcastNewEvent(new AIEventSubsidyOfferExpired(s->index));
} else {
if (s->awarded == _local_company) {
Pair reftype = SetupSubsidyDecodeParam(s, true);
AddNewsItem(STR_NEWS_SUBSIDY_WITHDRAWN_SERVICE, NS_SUBSIDIES, (NewsReferenceType)reftype.a, s->src, (NewsReferenceType)reftype.b, s->dst);
}
AI::BroadcastNewEvent(new AIEventSubsidyExpired(s->index));
}
delete s;
modified = true;
}
}
if (modified) RebuildSubsidisedSourceAndDestinationCache();
/* 25% chance to go on */
if (Subsidy::CanAllocateItem() && Chance16(1, 4)) {
uint n = 1000;
do {
Subsidy *s = FindSubsidyPassengerRoute();
if (s == NULL) s = FindSubsidyCargoRoute();
if (s != NULL) {
s->remaining = SUBSIDY_OFFER_MONTHS;
s->awarded = INVALID_COMPANY;
Pair reftype = SetupSubsidyDecodeParam(s, false);
AddNewsItem(STR_NEWS_SERVICE_SUBSIDY_OFFERED, NS_SUBSIDIES, (NewsReferenceType)reftype.a, s->src, (NewsReferenceType)reftype.b, s->dst);
SetPartOfSubsidyFlag(s->src_type, s->src, POS_SRC);
SetPartOfSubsidyFlag(s->dst_type, s->dst, POS_DST);
AI::BroadcastNewEvent(new AIEventSubsidyOffer(s->index));
modified = true;
break;
}
} while (n--);
}
if (modified) InvalidateWindowData(WC_SUBSIDIES_LIST, 0);
}
/**
* Tests whether given delivery is subsidised and possibly awards the subsidy to delivering company
* @param cargo_type type of cargo
* @param company company delivering the cargo
* @param src_type type of #src
* @param src index of source
* @param st station where the cargo is delivered to
* @return is the delivery subsidised?
*/
bool CheckSubsidised(CargoID cargo_type, CompanyID company, SourceType src_type, SourceID src, const Station *st)
{
/* If the source isn't subsidised, don't continue */
if (src == INVALID_SOURCE) return false;
switch (src_type) {
case ST_INDUSTRY:
if (!(Industry::Get(src)->part_of_subsidy & POS_SRC)) return false;
break;
case ST_TOWN:
if (!( Town::Get(src)->part_of_subsidy & POS_SRC)) return false;
break;
default: return false;
}
/* Remember all towns near this station (at least one house in its catchment radius)
* which are destination of subsidised path. Do that only if needed */
SmallVector<const Town *, 2> towns_near;
if (!st->rect.IsEmpty()) {
Subsidy *s;
FOR_ALL_SUBSIDIES(s) {
/* Don't create the cache if there is no applicable subsidy with town as destination */
if (s->dst_type != ST_TOWN) continue;
if (s->cargo_type != cargo_type || s->src_type != src_type || s->src != src) continue;
if (s->IsAwarded() && s->awarded != company) continue;
Rect rect = st->GetCatchmentRect();
for (int y = rect.top; y <= rect.bottom; y++) {
for (int x = rect.left; x <= rect.right; x++) {
TileIndex tile = TileXY(x, y);
if (!IsTileType(tile, MP_HOUSE)) continue;
const Town *t = Town::GetByTile(tile);
if (t->part_of_subsidy & POS_DST) towns_near.Include(t);
}
}
break;
}
}
bool subsidised = false;
/* Check if there's a (new) subsidy that applies. There can be more subsidies triggered by this delivery!
* Think about the case that subsidies are A->B and A->C and station has both B and C in its catchment area */
Subsidy *s;
FOR_ALL_SUBSIDIES(s) {
if (s->cargo_type == cargo_type && s->src_type == src_type && s->src == src && (!s->IsAwarded() || s->awarded == company)) {
switch (s->dst_type) {
case ST_INDUSTRY:
for (const Industry * const *ip = st->industries_near.Begin(); ip != st->industries_near.End(); ip++) {
if (s->dst == (*ip)->index) {
assert((*ip)->part_of_subsidy & POS_DST);
subsidised = true;
if (!s->IsAwarded()) s->AwardTo(company);
}
}
break;
case ST_TOWN:
for (const Town * const *tp = towns_near.Begin(); tp != towns_near.End(); tp++) {
if (s->dst == (*tp)->index) {
assert((*tp)->part_of_subsidy & POS_DST);
subsidised = true;
if (!s->IsAwarded()) s->AwardTo(company);
}
}
break;
default:
NOT_REACHED();
}
}
}
return subsidised;
}
|