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
|
/* $Id$ */
/** @file town.h Base of the town class. */
#ifndef TOWN_H
#define TOWN_H
#include "oldpool.h"
#include "core/bitmath_func.hpp"
#include "core/random_func.hpp"
#include "cargo_type.h"
#include "tile_type.h"
#include "date_type.h"
#include "town_type.h"
#include "company_type.h"
#include "settings_type.h"
#include "strings_type.h"
#include "viewport_type.h"
#include "economy_type.h"
#include "map_type.h"
#include "command_type.h"
enum {
HOUSE_NO_CLASS = 0,
NEW_HOUSE_OFFSET = 110,
HOUSE_MAX = 512,
INVALID_TOWN = 0xFFFF,
INVALID_HOUSE_ID = 0xFFFF,
/* There can only be as many classes as there are new houses, plus one for
* NO_CLASS, as the original houses don't have classes. */
HOUSE_CLASS_MAX = HOUSE_MAX - NEW_HOUSE_OFFSET + 1,
};
enum BuildingFlags {
TILE_NO_FLAG = 0,
TILE_SIZE_1x1 = 1U << 0,
TILE_NOT_SLOPED = 1U << 1,
TILE_SIZE_2x1 = 1U << 2,
TILE_SIZE_1x2 = 1U << 3,
TILE_SIZE_2x2 = 1U << 4,
BUILDING_IS_ANIMATED = 1U << 5,
BUILDING_IS_CHURCH = 1U << 6,
BUILDING_IS_STADIUM = 1U << 7,
BUILDING_HAS_1_TILE = TILE_SIZE_1x1 | TILE_SIZE_2x1 | TILE_SIZE_1x2 | TILE_SIZE_2x2,
BUILDING_HAS_2_TILES = TILE_SIZE_2x1 | TILE_SIZE_1x2 | TILE_SIZE_2x2,
BUILDING_2_TILES_X = TILE_SIZE_2x1 | TILE_SIZE_2x2,
BUILDING_2_TILES_Y = TILE_SIZE_1x2 | TILE_SIZE_2x2,
BUILDING_HAS_4_TILES = TILE_SIZE_2x2,
};
DECLARE_ENUM_AS_BIT_SET(BuildingFlags)
enum HouseZonesBits {
HZB_BEGIN = 0,
HZB_TOWN_EDGE = 0,
HZB_TOWN_OUTSKIRT,
HZB_TOWN_OUTER_SUBURB,
HZB_TOWN_INNER_SUBURB,
HZB_TOWN_CENTRE,
HZB_END,
};
assert_compile(HZB_END == 5);
DECLARE_POSTFIX_INCREMENT(HouseZonesBits)
enum HouseZones { ///< Bit Value Meaning
HZ_NOZNS = 0x0000, ///< 0 This is just to get rid of zeros, meaning none
HZ_ZON1 = 1U << HZB_TOWN_EDGE, ///< 0..4 1,2,4,8,10 which town zones the building can be built in, Zone1 been the further suburb
HZ_ZON2 = 1U << HZB_TOWN_OUTSKIRT,
HZ_ZON3 = 1U << HZB_TOWN_OUTER_SUBURB,
HZ_ZON4 = 1U << HZB_TOWN_INNER_SUBURB,
HZ_ZON5 = 1U << HZB_TOWN_CENTRE, ///< center of town
HZ_ZONALL = 0x001F, ///< 1F This is just to englobe all above types at once
HZ_SUBARTC_ABOVE = 0x0800, ///< 11 800 can appear in sub-arctic climate above the snow line
HZ_TEMP = 0x1000, ///< 12 1000 can appear in temperate climate
HZ_SUBARTC_BELOW = 0x2000, ///< 13 2000 can appear in sub-arctic climate below the snow line
HZ_SUBTROPIC = 0x4000, ///< 14 4000 can appear in subtropical climate
HZ_TOYLND = 0x8000 ///< 15 8000 can appear in toyland climate
};
DECLARE_ENUM_AS_BIT_SET(HouseZones)
enum HouseExtraFlags {
NO_EXTRA_FLAG = 0,
BUILDING_IS_HISTORICAL = 1U << 0, ///< this house will only appear during town generation in random games, thus the historical
BUILDING_IS_PROTECTED = 1U << 1, ///< towns and AI will not remove this house, while human players will be able to
SYNCHRONISED_CALLBACK_1B = 1U << 2, ///< synchronized callback 1B will be performed, on multi tile houses
CALLBACK_1A_RANDOM_BITS = 1U << 3, ///< callback 1A needs random bits
};
DECLARE_ENUM_AS_BIT_SET(HouseExtraFlags)
template <typename T>
struct BuildingCounts {
T id_count[HOUSE_MAX];
T class_count[HOUSE_CLASS_MAX];
};
static const uint CUSTOM_TOWN_NUMBER_DIFFICULTY = 4; ///< value for custom town number in difficulty settings
static const uint CUSTOM_TOWN_MAX_NUMBER = 5000; ///< this is the maximum number of towns a user can specify in customisation
DECLARE_OLD_POOL(Town, Town, 3, 8000)
struct Town : PoolItem<Town, TownID, &_Town_pool> {
TileIndex xy;
/* Current population of people and amount of houses. */
uint32 num_houses;
uint32 population;
/* Town name */
uint32 townnamegrfid;
uint16 townnametype;
uint32 townnameparts;
char *name;
/* NOSAVE: Location of name sign, UpdateTownVirtCoord updates this. */
ViewportSign sign;
/* Makes sure we don't build certain house types twice.
* bit 0 = Building funds received
* bit 1 = CHURCH
* bit 2 = STADIUM */
byte flags12;
/* level of noise that all the airports are generating */
uint16 noise_reached;
/* Which companies have a statue? */
CompanyMask statues;
/* Company ratings as well as a mask that determines which companies have a rating. */
CompanyMask have_ratings;
uint8 unwanted[MAX_COMPANIES]; ///< how many months companies aren't wanted by towns (bribe)
CompanyByte exclusivity; ///< which company has exclusivity
uint8 exclusive_counter; ///< months till the exclusivity expires
int16 ratings[MAX_COMPANIES];
/* Maximum amount of passengers and mail that can be transported. */
uint32 max_pass;
uint32 max_mail;
uint32 new_max_pass;
uint32 new_max_mail;
uint32 act_pass;
uint32 act_mail;
uint32 new_act_pass;
uint32 new_act_mail;
/* Amount of passengers that were transported. */
byte pct_pass_transported;
byte pct_mail_transported;
/* Amount of food and paper that was transported. Actually a bit mask would be enough. */
uint16 act_food;
uint16 act_water;
uint16 new_act_food;
uint16 new_act_water;
/* Time until we rebuild a house. */
uint16 time_until_rebuild;
/* When to grow town next time. */
uint16 grow_counter;
int16 growth_rate;
/* Fund buildings program in action? */
byte fund_buildings_months;
/* Fund road reconstruction in action? */
byte road_build_months;
/* If this is a larger town, and should grow more quickly. */
bool larger_town;
TownLayoutByte layout; ///< town specific road layout
/* NOSAVE: UpdateTownRadius updates this given the house count. */
uint32 squared_town_zone_radius[HZB_END];
/* NOSAVE: The number of each type of building in the town. */
BuildingCounts<uint16> building_counts;
/**
* Creates a new town
*/
Town(TileIndex tile = INVALID_TILE);
/** Destroy the town */
~Town();
inline bool IsValid() const { return this->xy != INVALID_TILE; }
void InitializeLayout(TownLayout layout);
/** Calculate the max town noise
* The value is counted using the population divided by the content of the
* entry in town_noise_population corespondig to the town's tolerance.
* To this result, we add 3, which is the noise of the lowest airport.
* So user can at least buld that airport
* @return the maximum noise level the town will tolerate */
inline uint16 MaxTownNoise() const
{
if (this->population == 0) return 0; // no population? no noise
return ((this->population / _settings_game.economy.town_noise_population[_settings_game.difficulty.town_council_tolerance]) + 3);
}
};
struct HouseSpec {
/* Standard properties */
Year min_year; ///< introduction year of the house
Year max_year; ///< last year it can be built
byte population; ///< population (Zero on other tiles in multi tile house.)
byte removal_cost; ///< cost multiplier for removing it
StringID building_name; ///< building name
uint16 remove_rating_decrease; ///< rating decrease if removed
byte mail_generation; ///< mail generation multiplier (tile based, as the acceptances below)
byte cargo_acceptance[3]; ///< acceptance level for the cargo slots
CargoID accepts_cargo[3]; ///< 3 input cargo slots
BuildingFlags building_flags; ///< some flags that describe the house (size, stadium etc...)
HouseZones building_availability; ///< where can it be built (climates, zones)
bool enabled; ///< the house is available to build (true by default, but can be disabled by newgrf)
/* NewHouses properties */
HouseID substitute_id; ///< which original house this one is based on
struct SpriteGroup *spritegroup; ///< pointer to the different sprites of the house
HouseID override; ///< which house this one replaces
uint16 callback_mask; ///< House callback flags
byte random_colour[4]; ///< 4 "random" colours
byte probability; ///< Relative probability of appearing (16 is the standard value)
HouseExtraFlags extra_flags; ///< some more flags
HouseClassID class_id; ///< defines the class this house has (grf file based) @See HouseGetVariable, prop 0x44
byte animation_frames; ///< number of animation frames
byte animation_speed; ///< amount of time between each of those frames
byte processing_time; ///< Periodic refresh multiplier
byte minimum_life; ///< The minimum number of years this house will survive before the town rebuilds it
/* grf file related properties*/
uint8 local_id; ///< id defined by the grf file for this house
const struct GRFFile *grffile; ///< grf file that introduced this house
/**
* Get the cost for removing this house
* @return the cost (inflation corrected etc)
*/
Money GetRemovalCost() const;
};
extern HouseSpec _house_specs[HOUSE_MAX];
uint32 GetWorldPopulation();
void UpdateTownVirtCoord(Town *t);
void UpdateAllTownVirtCoords();
void InitializeTown();
void ShowTownViewWindow(TownID town);
void ExpandTown(Town *t);
Town *CreateRandomTown(uint attempts, TownSize size, bool city, TownLayout layout);
enum TownRatingCheckType {
ROAD_REMOVE = 0,
TUNNELBRIDGE_REMOVE = 1,
TOWN_RATING_CHECK_TYPE_COUNT,
};
/** This is the number of ticks between towns being processed for building new
* houses or roads. This value originally came from the size of the town array
* in TTD. */
static const byte TOWN_GROWTH_FREQUENCY = 70;
/** Simple value that indicates the house has reached the final stage of
* construction. */
static const byte TOWN_HOUSE_COMPLETED = 3;
/** This enum is used in conjonction with town->flags12.
* IT simply states what bit is used for.
* It is pretty unrealistic (IMHO) to only have one church/stadium
* per town, NO MATTER the population of it.
* And there are 5 more bits available on flags12...
*/
enum {
TOWN_IS_FUNDED = 0, ///< Town has received some funds for
TOWN_HAS_CHURCH = 1, ///< There can be only one church by town.
TOWN_HAS_STADIUM = 2 ///< There can be only one stadium by town.
};
bool CheckforTownRating(DoCommandFlag flags, Town *t, TownRatingCheckType type);
static inline HouseSpec *GetHouseSpecs(HouseID house_id)
{
assert(house_id < HOUSE_MAX);
return &_house_specs[house_id];
}
TileIndexDiff GetHouseNorthPart(HouseID &house);
/**
* Check if a TownID is valid.
* @param index to inquiry in the pool of town
* @return true if it exists
*/
static inline bool IsValidTownID(TownID index)
{
return index < Town::GetPoolSize() && Town::Get(index)->IsValid();
}
static inline TownID GetMaxTownIndex()
{
/* TODO - This isn't the real content of the function, but
* with the new pool-system this will be replaced with one that
* _really_ returns the highest index. Now it just returns
* the next safe value we are sure about everything is below.
*/
return Town::GetPoolSize() - 1;
}
static inline uint GetNumTowns()
{
extern uint _total_towns;
return _total_towns;
}
/**
* Return a random valid town.
*/
static inline Town *GetRandomTown()
{
int num = RandomRange(GetNumTowns());
TownID index = INVALID_TOWN;
while (num >= 0) {
num--;
index++;
/* Make sure we have a valid town */
while (!IsValidTownID(index)) {
index++;
assert(index <= GetMaxTownIndex());
}
}
return Town::Get(index);
}
Town *CalcClosestTownFromTile(TileIndex tile, uint threshold = UINT_MAX);
#define FOR_ALL_TOWNS_FROM(t, start) for (t = Town::Get(start); t != NULL; t = (t->index + 1U < Town::GetPoolSize()) ? Town::Get(t->index + 1U) : NULL) if (t->IsValid())
#define FOR_ALL_TOWNS(t) FOR_ALL_TOWNS_FROM(t, 0)
extern Town *_cleared_town;
extern int _cleared_town_rating;
extern uint32 _cur_town_ctr;
extern uint32 _cur_town_iter;
void ResetHouses();
void ClearTownHouse(Town *t, TileIndex tile);
void UpdateTownMaxPass(Town *t);
void UpdateTownRadius(Town *t);
bool CheckIfAuthorityAllowsNewStation(TileIndex tile, DoCommandFlag flags);
Town *ClosestTownFromTile(TileIndex tile, uint threshold);
void ChangeTownRating(Town *t, int add, int max, DoCommandFlag flags);
HouseZonesBits GetTownRadiusGroup(const Town *t, TileIndex tile);
void SetTownRatingTestMode(bool mode);
uint GetMaskOfTownActions(int *nump, CompanyID cid, const Town *t);
bool GenerateTowns(TownLayout layout);
bool GenerateTownName(uint32 *townnameparts);
/**
* Calculate a hash value from a tile position
*
* @param x The X coordinate
* @param y The Y coordinate
* @return The hash of the tile
*/
static inline uint TileHash(uint x, uint y)
{
uint hash = x >> 4;
hash ^= x >> 6;
hash ^= y >> 4;
hash -= y >> 6;
return hash;
}
/**
* Get the last two bits of the TileHash
* from a tile position.
*
* @see TileHash()
* @param x The X coordinate
* @param y The Y coordinate
* @return The last two bits from hash of the tile
*/
static inline uint TileHash2Bit(uint x, uint y)
{
return GB(TileHash(x, y), 0, 2);
}
#endif /* TOWN_H */
|