OpenTTD Source  14.0-beta1
newgrf_town.cpp
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1 /*
2  * This file is part of OpenTTD.
3  * 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.
4  * 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.
5  * 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/>.
6  */
7 
10 #include "stdafx.h"
11 #include "debug.h"
12 #include "town.h"
13 #include "newgrf_town.h"
14 #include "timer/timer_game_tick.h"
15 
16 #include "safeguards.h"
17 
18 /* virtual */ uint32_t TownScopeResolver::GetVariable(byte variable, [[maybe_unused]] uint32_t parameter, bool *available) const
19 {
20  switch (variable) {
21  /* Larger towns */
22  case 0x40:
23  if (_settings_game.economy.larger_towns == 0) return 2;
24  if (this->t->larger_town) return 1;
25  return 0;
26 
27  /* Town index */
28  case 0x41: return this->t->index;
29 
30  /* Get a variable from the persistent storage */
31  case 0x7C: {
32  /* Check the persistent storage for the GrfID stored in register 100h. */
33  uint32_t grfid = GetRegister(0x100);
34  if (grfid == 0xFFFFFFFF) {
35  if (this->ro.grffile == nullptr) return 0;
36  grfid = this->ro.grffile->grfid;
37  }
38 
39  for (auto &it : this->t->psa_list) {
40  if (it->grfid == grfid) return it->GetValue(parameter);
41  }
42 
43  return 0;
44  }
45 
46  /* Town properties */
47  case 0x80: return this->t->xy.base();
48  case 0x81: return GB(this->t->xy.base(), 8, 8);
49  case 0x82: return ClampTo<uint16_t>(this->t->cache.population);
50  case 0x83: return GB(ClampTo<uint16_t>(this->t->cache.population), 8, 8);
51  case 0x8A: return this->t->grow_counter / Ticks::TOWN_GROWTH_TICKS;
52  case 0x92: return this->t->flags; // In original game, 0x92 and 0x93 are really one word. Since flags is a byte, this is to adjust
53  case 0x93: return 0;
54  case 0x94: return ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_EDGE]);
55  case 0x95: return GB(ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_EDGE]), 8, 8);
56  case 0x96: return ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_OUTSKIRT]);
57  case 0x97: return GB(ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_OUTSKIRT]), 8, 8);
58  case 0x98: return ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_OUTER_SUBURB]);
59  case 0x99: return GB(ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_OUTER_SUBURB]), 8, 8);
60  case 0x9A: return ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_INNER_SUBURB]);
61  case 0x9B: return GB(ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_INNER_SUBURB]), 8, 8);
62  case 0x9C: return ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_CENTRE]);
63  case 0x9D: return GB(ClampTo<uint16_t>(this->t->cache.squared_town_zone_radius[HZB_TOWN_CENTRE]), 8, 8);
64  case 0x9E: return this->t->ratings[0];
65  case 0x9F: return GB(this->t->ratings[0], 8, 8);
66  case 0xA0: return this->t->ratings[1];
67  case 0xA1: return GB(this->t->ratings[1], 8, 8);
68  case 0xA2: return this->t->ratings[2];
69  case 0xA3: return GB(this->t->ratings[2], 8, 8);
70  case 0xA4: return this->t->ratings[3];
71  case 0xA5: return GB(this->t->ratings[3], 8, 8);
72  case 0xA6: return this->t->ratings[4];
73  case 0xA7: return GB(this->t->ratings[4], 8, 8);
74  case 0xA8: return this->t->ratings[5];
75  case 0xA9: return GB(this->t->ratings[5], 8, 8);
76  case 0xAA: return this->t->ratings[6];
77  case 0xAB: return GB(this->t->ratings[6], 8, 8);
78  case 0xAC: return this->t->ratings[7];
79  case 0xAD: return GB(this->t->ratings[7], 8, 8);
80  case 0xAE: return this->t->have_ratings;
81  case 0xB2: return this->t->statues;
82  case 0xB6: return ClampTo<uint16_t>(this->t->cache.num_houses);
83  case 0xB9: return this->t->growth_rate / Ticks::TOWN_GROWTH_TICKS;
84  case 0xBA: return ClampTo<uint16_t>(this->t->supplied[CT_PASSENGERS].new_max);
85  case 0xBB: return GB(ClampTo<uint16_t>(this->t->supplied[CT_PASSENGERS].new_max), 8, 8);
86  case 0xBC: return ClampTo<uint16_t>(this->t->supplied[CT_MAIL].new_max);
87  case 0xBD: return GB(ClampTo<uint16_t>(this->t->supplied[CT_MAIL].new_max), 8, 8);
88  case 0xBE: return ClampTo<uint16_t>(this->t->supplied[CT_PASSENGERS].new_act);
89  case 0xBF: return GB(ClampTo<uint16_t>(this->t->supplied[CT_PASSENGERS].new_act), 8, 8);
90  case 0xC0: return ClampTo<uint16_t>(this->t->supplied[CT_MAIL].new_act);
91  case 0xC1: return GB(ClampTo<uint16_t>(this->t->supplied[CT_MAIL].new_act), 8, 8);
92  case 0xC2: return ClampTo<uint16_t>(this->t->supplied[CT_PASSENGERS].old_max);
93  case 0xC3: return GB(ClampTo<uint16_t>(this->t->supplied[CT_PASSENGERS].old_max), 8, 8);
94  case 0xC4: return ClampTo<uint16_t>(this->t->supplied[CT_MAIL].old_max);
95  case 0xC5: return GB(ClampTo<uint16_t>(this->t->supplied[CT_MAIL].old_max), 8, 8);
96  case 0xC6: return ClampTo<uint16_t>(this->t->supplied[CT_PASSENGERS].old_act);
97  case 0xC7: return GB(ClampTo<uint16_t>(this->t->supplied[CT_PASSENGERS].old_act), 8, 8);
98  case 0xC8: return ClampTo<uint16_t>(this->t->supplied[CT_MAIL].old_act);
99  case 0xC9: return GB(ClampTo<uint16_t>(this->t->supplied[CT_MAIL].old_act), 8, 8);
100  case 0xCA: return this->t->GetPercentTransported(CT_PASSENGERS);
101  case 0xCB: return this->t->GetPercentTransported(CT_MAIL);
102  case 0xCC: return this->t->received[TAE_FOOD].new_act;
103  case 0xCD: return GB(this->t->received[TAE_FOOD].new_act, 8, 8);
104  case 0xCE: return this->t->received[TAE_WATER].new_act;
105  case 0xCF: return GB(this->t->received[TAE_WATER].new_act, 8, 8);
106  case 0xD0: return this->t->received[TAE_FOOD].old_act;
107  case 0xD1: return GB(this->t->received[TAE_FOOD].old_act, 8, 8);
108  case 0xD2: return this->t->received[TAE_WATER].old_act;
109  case 0xD3: return GB(this->t->received[TAE_WATER].old_act, 8, 8);
110  case 0xD4: return this->t->road_build_months;
111  case 0xD5: return this->t->fund_buildings_months;
112  }
113 
114  Debug(grf, 1, "Unhandled town variable 0x{:X}", variable);
115 
116  *available = false;
117  return UINT_MAX;
118 }
119 
120 /* virtual */ void TownScopeResolver::StorePSA(uint pos, int32_t value)
121 {
122  if (this->readonly) return;
123 
124  assert(this->t != nullptr);
125  /* We can't store anything if the caller has no #GRFFile. */
126  if (this->ro.grffile == nullptr) return;
127 
128  /* Check the persistent storage for the GrfID stored in register 100h. */
129  uint32_t grfid = GetRegister(0x100);
130 
131  /* A NewGRF can only write in the persistent storage associated to its own GRFID. */
132  if (grfid == 0xFFFFFFFF) grfid = this->ro.grffile->grfid;
133  if (grfid != this->ro.grffile->grfid) return;
134 
135  /* Check if the storage exists. */
136  for (auto &it : t->psa_list) {
137  if (it->grfid == grfid) {
138  it->StoreValue(pos, value);
139  return;
140  }
141  }
142 
143  /* Create a new storage. */
144  assert(PersistentStorage::CanAllocateItem());
145  PersistentStorage *psa = new PersistentStorage(grfid, GSF_FAKE_TOWNS, this->t->xy);
146  psa->StoreValue(pos, value);
147  t->psa_list.push_back(psa);
148 }
149 
156 TownResolverObject::TownResolverObject(const struct GRFFile *grffile, Town *t, bool readonly)
157  : ResolverObject(grffile), town_scope(*this, t, readonly)
158 {
159 }
160 
Town::have_ratings
CompanyMask have_ratings
which companies have a rating
Definition: town.h:69
TownScopeResolver::t
Town * t
Town of the scope.
Definition: newgrf_town.h:23
EconomySettings::larger_towns
uint8_t larger_towns
the number of cities to build. These start off larger and grow twice as fast
Definition: settings_type.h:551
TAE_FOOD
@ TAE_FOOD
Cargo behaves food/fizzy-drinks-like.
Definition: cargotype.h:31
Town::road_build_months
byte road_build_months
fund road reconstruction in action?
Definition: town.h:91
Town::statues
CompanyMask statues
which companies have a statue?
Definition: town.h:66
GB
constexpr static debug_inline uint GB(const T x, const uint8_t s, const uint8_t n)
Fetch n bits from x, started at bit s.
Definition: bitmath_func.hpp:32
GetRegister
uint32_t GetRegister(uint i)
Gets the value of a so-called newgrf "register".
Definition: newgrf_spritegroup.h:29
Pool::PoolItem::index
Tindex index
Index of this pool item.
Definition: pool_type.hpp:234
ResolverObject
Interface for SpriteGroup-s to access the gamestate.
Definition: newgrf_spritegroup.h:307
Town::growth_rate
uint16_t growth_rate
town growth rate
Definition: town.h:88
ResolverObject::grffile
const GRFFile * grffile
GRFFile the resolved SpriteGroup belongs to.
Definition: newgrf_spritegroup.h:335
Town::xy
TileIndex xy
town center tile
Definition: town.h:51
town.h
Town::fund_buildings_months
byte fund_buildings_months
fund buildings program in action?
Definition: town.h:90
Debug
#define Debug(category, level, format_string,...)
Ouptut a line of debugging information.
Definition: debug.h:37
Town::supplied
TransportedCargoStat< uint32_t > supplied[NUM_CARGO]
Cargo statistics about supplied cargo.
Definition: town.h:75
TownScopeResolver::readonly
bool readonly
When set, persistent storage of the town is read-only,.
Definition: newgrf_town.h:24
Town::grow_counter
uint16_t grow_counter
counter to count when to grow, value is smaller than or equal to growth_rate
Definition: town.h:87
GSF_FAKE_TOWNS
@ GSF_FAKE_TOWNS
Fake town GrfSpecFeature for NewGRF debugging (parent scope)
Definition: newgrf.h:90
PersistentStorage
Class for pooled persistent storage of data.
Definition: newgrf_storage.h:199
_settings_game
GameSettings _settings_game
Game settings of a running game or the scenario editor.
Definition: settings.cpp:55
timer_game_tick.h
GameSettings::economy
EconomySettings economy
settings to change the economy
Definition: settings_type.h:628
safeguards.h
stdafx.h
TownResolverObject::TownResolverObject
TownResolverObject(const struct GRFFile *grffile, Town *t, bool readonly)
Resolver for a town.
Definition: newgrf_town.cpp:156
TownCache::population
uint32_t population
Current population of people.
Definition: town.h:42
TransportedCargoStat::new_max
Tstorage new_max
Maximum amount this month.
Definition: town_type.h:116
Ticks::TOWN_GROWTH_TICKS
static constexpr TimerGameTick::Ticks TOWN_GROWTH_TICKS
Cycle duration for towns trying to grow (this originates from the size of the town array in TTD).
Definition: timer_game_tick.h:56
TransportedCargoStat::old_max
Tstorage old_max
Maximum amount last month.
Definition: town_type.h:115
newgrf_town.h
TransportedCargoStat::new_act
Tstorage new_act
Actually transported this month.
Definition: town_type.h:118
TAE_WATER
@ TAE_WATER
Cargo behaves water-like.
Definition: cargotype.h:30
TransportedCargoStat::old_act
Tstorage old_act
Actually transported last month.
Definition: town_type.h:117
Town::cache
TownCache cache
Container for all cacheable data.
Definition: town.h:53
Pool::PoolItem<&_persistent_storage_pool >::CanAllocateItem
static bool CanAllocateItem(size_t n=1)
Helper functions so we can use PoolItem::Function() instead of _poolitem_pool.Function()
Definition: pool_type.hpp:305
TownCache::num_houses
uint32_t num_houses
Amount of houses.
Definition: town.h:41
Town
Town data structure.
Definition: town.h:50
TownScopeResolver::StorePSA
void StorePSA(uint reg, int32_t value) override
Store a value into the persistent storage area (PSA).
Definition: newgrf_town.cpp:120
Town::ratings
int16_t ratings[MAX_COMPANIES]
ratings of each company for this town
Definition: town.h:73
Town::received
TransportedCargoStat< uint16_t > received[NUM_TAE]
Cargo statistics about received cargotypes.
Definition: town.h:76
TownScopeResolver::GetVariable
uint32_t GetVariable(byte variable, [[maybe_unused]] uint32_t parameter, bool *available) const override
Get a variable value.
Definition: newgrf_town.cpp:18
ScopeResolver::ro
ResolverObject & ro
Surrounding resolver object.
Definition: newgrf_spritegroup.h:289
Town::larger_town
bool larger_town
if this is a larger town and should grow more quickly
Definition: town.h:93
TownCache::squared_town_zone_radius
uint32_t squared_town_zone_radius[HZB_END]
UpdateTownRadius updates this given the house count.
Definition: town.h:45
PersistentStorageArray::StoreValue
void StoreValue(uint pos, int32_t value)
Stores some value at a given position.
Definition: newgrf_storage.h:80
GRFFile
Dynamic data of a loaded NewGRF.
Definition: newgrf.h:107
debug.h
Town::flags
byte flags
See TownFlags.
Definition: town.h:62