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
|
/* $Id$ */
/*
* 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 ai_town.hpp Everything to query towns. */
#ifndef AI_TOWN_HPP
#define AI_TOWN_HPP
#include "ai_object.hpp"
#include "ai_company.hpp"
/**
* Class that handles all town related functions.
*/
class AITown : public AIObject {
public:
static const char *GetClassName() { return "AITown"; }
/**
* Actions that one can perform on a town.
*/
enum TownAction {
/* Values are important, as they represent the internal state of the game. */
/**
* The cargo ratings temporary gains 25% of rating (in
* absolute percentage, so 10% becomes 35%, with a max of 99%)
* for all stations within 10 tiles.
*/
TOWN_ACTION_ADVERTISE_SMALL = 0,
/**
* The cargo ratings temporary gains 44% of rating (in
* absolute percentage, so 10% becomes 54%, with a max of 99%)
* for all stations within 15 tiles.
*/
TOWN_ACTION_ADVERTISE_MEDIUM = 1,
/**
* The cargo ratings temporary gains 63% of rating (in
* absolute percentage, so 10% becomes 73%, with a max of 99%)
* for all stations within 20 tiles.
*/
TOWN_ACTION_ADVERTISE_LARGE = 2,
/**
* Rebuild the roads of this town for 6 months.
*/
TOWN_ACTION_ROAD_REBUILD = 3,
/**
* Build a statue in this town.
*/
TOWN_ACTION_BUILD_STATUE = 4,
/**
* Fund the creation of extra buildings for 3 months.
*/
TOWN_ACTION_FUND_BUILDINGS = 5,
/**
* Buy exclusive rights for this town for 12 months.
*/
TOWN_ACTION_BUY_RIGHTS = 6,
/**
* Bribe the town in order to get a higher rating.
*/
TOWN_ACTION_BRIBE = 7,
};
/**
* Different ratings one could have in a town.
*/
enum TownRating {
TOWN_RATING_NONE, ///< The company got no rating in the town.
TOWN_RATING_APPALLING, ///< The company got an appalling rating in the town .
TOWN_RATING_VERY_POOR, ///< The company got an very poor rating in the town.
TOWN_RATING_POOR, ///< The company got an poor rating in the town.
TOWN_RATING_MEDIOCRE, ///< The company got an mediocre rating in the town.
TOWN_RATING_GOOD, ///< The company got an good rating in the town.
TOWN_RATING_VERY_GOOD, ///< The company got an very good rating in the town.
TOWN_RATING_EXCELLENT, ///< The company got an excellent rating in the town.
TOWN_RATING_OUTSTANDING, ///< The company got an outstanding rating in the town.
TOWN_RATING_INVALID = -1, ///< The town rating for invalid towns/companies.
};
/**
* Possible layouts for the roads in a town.
*/
enum RoadLayout {
/* Order IS important, as it matches an in-game value */
ROAD_LAYOUT_ORIGINAL, ///< Original algorithm (min. 1 distance between roads).
ROAD_LAYOUT_BETTER_ROADS, ///< Extended original algorithm (min. 2 distance between roads).
ROAD_LAYOUT_2x2, ///< Geometric 2x2 grid algorithm
ROAD_LAYOUT_3x3, ///< Geometric 3x3 grid algorithm
ROAD_LAYOUT_INVALID = -1, ///< The layout for invalid towns.
};
/**
* Gets the number of towns.
* @return The number of towns.
* @post Return value is always non-negative.
*/
static int32 GetTownCount();
/**
* Checks whether the given town index is valid.
* @param town_id The index to check.
* @return True if and only if the town is valid.
*/
static bool IsValidTown(TownID town_id);
/**
* Get the name of the town.
* @param town_id The town to get the name of.
* @pre IsValidTown(town_id).
* @return The name of the town.
*/
static char *GetName(TownID town_id);
/**
* Gets the number of inhabitants in the town.
* @param town_id The town to get the population of.
* @pre IsValidTown(town_id).
* @return The number of inhabitants.
* @post Return value is always non-negative.
*/
static int32 GetPopulation(TownID town_id);
/**
* Gets the number of houses in the town.
* @param town_id The town to get the number of houses of.
* @pre IsValidTown(town_id).
* @return The number of houses.
* @post Return value is always non-negative.
*/
static int32 GetHouseCount(TownID town_id);
/**
* Gets the location of the town.
* @param town_id The town to get the location of.
* @pre IsValidTown(town_id).
* @return The location of the town.
*/
static TileIndex GetLocation(TownID town_id);
/**
* Get the total last month's production of the given cargo at a town.
* @param town_id The index of the town.
* @param cargo_id The index of the cargo.
* @pre IsValidTown(town_id).
* @pre AICargo::IsValidCargo(cargo_id).
* @pre AICargo::GetTownEffect(cargo_id) == TE_PASSENGERS || AICargo::GetTownEffect(cargo_id) == TE_MAIL.
* @return The last month's production of the given cargo for this town.
* @post Return value is always non-negative.
*/
static int32 GetLastMonthProduction(TownID town_id, CargoID cargo_id);
/**
* Get the total amount of cargo transported from a town last month.
* @param town_id The index of the industry.
* @param cargo_id The index of the cargo.
* @pre IsValidTown(town_id).
* @pre AICargo::IsValidCargo(cargo_id).
* @pre AICargo::GetTownEffect(cargo_id) == TE_PASSENGERS || AICargo::GetTownEffect(cargo_id) == TE_MAIL.
* @return The amount of given cargo transported from this town last month.
* @post Return value is always non-negative.
*/
static int32 GetLastMonthTransported(TownID town_id, CargoID cargo_id);
/**
* Get the percentage of transported production of the given cargo at a town.
* @param town_id The index of the town.
* @param cargo_id The index of the cargo.
* @pre IsValidTown(town_id).
* @pre AICargo::IsValidCargo(cargo_id).
* @pre AICargo::GetTownEffect(cargo_id) == TE_PASSENGERS || AICargo::GetTownEffect(cargo_id) == TE_MAIL.
* @return The percentage of given cargo transported from this town last month.
* @post Return value is always non-negative.
*/
static int32 GetLastMonthTransportedPercentage(TownID town_id, CargoID cargo_id);
/**
* Get the manhattan distance from the tile to the AITown::GetLocation()
* of the town.
* @param town_id The town to get the distance to.
* @param tile The tile to get the distance to.
* @pre IsValidTown(town_id).
* @return The distance between town and tile.
*/
static int32 GetDistanceManhattanToTile(TownID town_id, TileIndex tile);
/**
* Get the square distance from the tile to the AITown::GetLocation()
* of the town.
* @param town_id The town to get the distance to.
* @param tile The tile to get the distance to.
* @pre IsValidTown(town_id).
* @return The distance between town and tile.
*/
static int32 GetDistanceSquareToTile(TownID town_id, TileIndex tile);
/**
* Find out if this tile is within the rating influence of a town.
* Stations on this tile influence the rating of the town.
* @param town_id The town to check.
* @param tile The tile to check.
* @pre IsValidTown(town_id).
* @return True if the tile is within the rating influence of the town.
*/
static bool IsWithinTownInfluence(TownID town_id, TileIndex tile);
/**
* Find out if this town has a statue for the current company.
* @param town_id The town to check.
* @pre IsValidTown(town_id).
* @return True if the town has a statue.
*/
static bool HasStatue(TownID town_id);
/**
* Find out how long the town is undergoing road reconstructions.
* @param town_id The town to check.
* @pre IsValidTown(town_id).
* @return The number of months the road reworks are still going to take.
* The value 0 means that there are currently no road reworks.
*/
static int GetRoadReworkDuration(TownID town_id);
/**
* Find out which company currently has the exclusive rights of this town.
* @param town_id The town to check.
* @pre IsValidTown(town_id).
* @return The company that has the exclusive rights. The value
* AICompany::COMPANY_INVALID means that there are currently no
* exclusive rights given out to anyone.
*/
static AICompany::CompanyID GetExclusiveRightsCompany(TownID town_id);
/**
* Find out how long the town is under influence of the exclusive rights.
* @param town_id The town to check.
* @pre IsValidTown(town_id).
* @return The number of months the exclusive rights hold.
* The value 0 means that there are currently no exclusive rights
* given out to anyone.
*/
static int32 GetExclusiveRightsDuration(TownID town_id);
/**
* Find out if an action can currently be performed on the town.
* @param town_id The town to perform the action on.
* @param town_action The action to perform on the town.
* @pre IsValidTown(town_id).
* @return True if and only if the action can performed.
*/
static bool IsActionAvailable(TownID town_id, TownAction town_action);
/**
* Perform a town action on this town.
* @param town_id The town to perform the action on.
* @param town_action The action to perform on the town.
* @pre IsValidTown(town_id).
* @pre IsActionAvailable(town_id, town_action).
* @return True if the action succeeded.
*/
static bool PerformTownAction(TownID town_id, TownAction town_action);
/**
* Get the rating of a company within a town.
* @param town_id The town to get the rating for.
* @param company_id The company to get the rating for.
* @pre IsValidTown(town_id).
* @pre AICompany.ResolveCompanyID(company) != AICompany::COMPANY_INVALID.
* @return The rating as shown to humans.
*/
static TownRating GetRating(TownID town_id, AICompany::CompanyID company_id);
/**
* Get the maximum level of noise that still can be added by airports
* before the town start to refuse building a new airport.
* @param town_id The town to get the allowed noise from.
* @return The noise that still can be added.
*/
static int GetAllowedNoise(TownID town_id);
/**
* Get the road layout for a town.
* @param town_id The town to get the road layout from.
* @return The RoadLayout for the town.
*/
static RoadLayout GetRoadLayout(TownID town_id);
};
#endif /* AI_TOWN_HPP */
|
