OpenTTD: src/newgrf_town.cpp Source File

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newgrf_town.cpp
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1 /* $Id: newgrf_town.cpp 27984 2018-03-11 13:19:41Z frosch $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * 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.
6 * 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.
7 * 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/>.
8 */
9
12 #include "stdafx.h"
13 #include "debug.h"
14 #include "town.h"
15 #include "newgrf_town.h"
16
17 #include "safeguards.h"
18
19 /* virtual */ uint32 TownScopeResolver::GetVariable(byte variable, uint32 parameter, bool *available) const
20 {
21 switch (variable) {
22 /* Larger towns */
23 case 0x40:
24 if (_settings_game.economy.larger_towns == 0) return 2;
25 if (this->t->larger_town) return 1;
26 return 0;
27
28 /* Town index */
29 case 0x41: return this->t->index;
30
31 /* Get a variable from the persistent storage */
32 case 0x7C: {
33 /* Check the persistent storage for the GrfID stored in register 100h. */
34 uint32 grfid = GetRegister(0x100);
35 if (grfid == 0xFFFFFFFF) {
36 if (this->ro.grffile == NULL) return 0;
37 grfid = this->ro.grffile->grfid;
38 }
39
40 std::list<PersistentStorage *>::iterator iter;
41 for (iter = this->t->psa_list.begin(); iter != this->t->psa_list.end(); iter++) {
42 if ((*iter)->grfid == grfid) return (*iter)->GetValue(parameter);
43 }
44
45 return 0;
46 }
47
48 /* Town properties */
49 case 0x80: return this->t->xy;
50 case 0x81: return GB(this->t->xy, 8, 8);
51 case 0x82: return ClampToU16(this->t->cache.population);
52 case 0x83: return GB(ClampToU16(this->t->cache.population), 8, 8);
53 case 0x8A: return this->t->grow_counter;
54 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
55 case 0x93: return 0;
56 case 0x94: return ClampToU16(this->t->cache.squared_town_zone_radius[0]);
57 case 0x95: return GB(ClampToU16(this->t->cache.squared_town_zone_radius[0]), 8, 8);
58 case 0x96: return ClampToU16(this->t->cache.squared_town_zone_radius[1]);
59 case 0x97: return GB(ClampToU16(this->t->cache.squared_town_zone_radius[1]), 8, 8);
60 case 0x98: return ClampToU16(this->t->cache.squared_town_zone_radius[2]);
61 case 0x99: return GB(ClampToU16(this->t->cache.squared_town_zone_radius[2]), 8, 8);
62 case 0x9A: return ClampToU16(this->t->cache.squared_town_zone_radius[3]);
63 case 0x9B: return GB(ClampToU16(this->t->cache.squared_town_zone_radius[3]), 8, 8);
64 case 0x9C: return ClampToU16(this->t->cache.squared_town_zone_radius[4]);
65 case 0x9D: return GB(ClampToU16(this->t->cache.squared_town_zone_radius[4]), 8, 8);
66 case 0x9E: return this->t->ratings[0];
67 case 0x9F: return GB(this->t->ratings[0], 8, 8);
68 case 0xA0: return this->t->ratings[1];
69 case 0xA1: return GB(this->t->ratings[1], 8, 8);
70 case 0xA2: return this->t->ratings[2];
71 case 0xA3: return GB(this->t->ratings[2], 8, 8);
72 case 0xA4: return this->t->ratings[3];
73 case 0xA5: return GB(this->t->ratings[3], 8, 8);
74 case 0xA6: return this->t->ratings[4];
75 case 0xA7: return GB(this->t->ratings[4], 8, 8);
76 case 0xA8: return this->t->ratings[5];
77 case 0xA9: return GB(this->t->ratings[5], 8, 8);
78 case 0xAA: return this->t->ratings[6];
79 case 0xAB: return GB(this->t->ratings[6], 8, 8);
80 case 0xAC: return this->t->ratings[7];
81 case 0xAD: return GB(this->t->ratings[7], 8, 8);
82 case 0xAE: return this->t->have_ratings;
83 case 0xB2: return this->t->statues;
84 case 0xB6: return ClampToU16(this->t->cache.num_houses);
85 case 0xB9: return this->t->growth_rate & (~TOWN_GROW_RATE_CUSTOM);
86 case 0xBA: return ClampToU16(this->t->supplied[CT_PASSENGERS].new_max);
87 case 0xBB: return GB(ClampToU16(this->t->supplied[CT_PASSENGERS].new_max), 8, 8);
88 case 0xBC: return ClampToU16(this->t->supplied[CT_MAIL].new_max);
89 case 0xBD: return GB(ClampToU16(this->t->supplied[CT_MAIL].new_max), 8, 8);
90 case 0xBE: return ClampToU16(this->t->supplied[CT_PASSENGERS].new_act);
91 case 0xBF: return GB(ClampToU16(this->t->supplied[CT_PASSENGERS].new_act), 8, 8);
92 case 0xC0: return ClampToU16(this->t->supplied[CT_MAIL].new_act);
93 case 0xC1: return GB(ClampToU16(this->t->supplied[CT_MAIL].new_act), 8, 8);
94 case 0xC2: return ClampToU16(this->t->supplied[CT_PASSENGERS].old_max);
95 case 0xC3: return GB(ClampToU16(this->t->supplied[CT_PASSENGERS].old_max), 8, 8);
96 case 0xC4: return ClampToU16(this->t->supplied[CT_MAIL].old_max);
97 case 0xC5: return GB(ClampToU16(this->t->supplied[CT_MAIL].old_max), 8, 8);
98 case 0xC6: return ClampToU16(this->t->supplied[CT_PASSENGERS].old_act);
99 case 0xC7: return GB(ClampToU16(this->t->supplied[CT_PASSENGERS].old_act), 8, 8);
100 case 0xC8: return ClampToU16(this->t->supplied[CT_MAIL].old_act);
101 case 0xC9: return GB(ClampToU16(this->t->supplied[CT_MAIL].old_act), 8, 8);
102 case 0xCA: return this->t->GetPercentTransported(CT_PASSENGERS);
103 case 0xCB: return this->t->GetPercentTransported(CT_MAIL);
104 case 0xCC: return this->t->received[TE_FOOD].new_act;
105 case 0xCD: return GB(this->t->received[TE_FOOD].new_act, 8, 8);
106 case 0xCE: return this->t->received[TE_WATER].new_act;
107 case 0xCF: return GB(this->t->received[TE_WATER].new_act, 8, 8);
108 case 0xD0: return this->t->received[TE_FOOD].old_act;
109 case 0xD1: return GB(this->t->received[TE_FOOD].old_act, 8, 8);
110 case 0xD2: return this->t->received[TE_WATER].old_act;
111 case 0xD3: return GB(this->t->received[TE_WATER].old_act, 8, 8);
112 case 0xD4: return this->t->road_build_months;
113 case 0xD5: return this->t->fund_buildings_months;
114 }
115
116 DEBUG(grf, 1, "Unhandled town variable 0x%X", variable);
117
118 *available = false;
119 return UINT_MAX;
120 }
121
122 /* virtual */ void TownScopeResolver::StorePSA(uint pos, int32 value)
123 {
124 if (this->readonly) return;
125
126 assert(this->t != NULL);
127 /* We can't store anything if the caller has no #GRFFile. */
128 if (this->ro.grffile == NULL) return;
129
130 /* Check the persistent storage for the GrfID stored in register 100h. */
131 uint32 grfid = GetRegister(0x100);
132
133 /* A NewGRF can only write in the persistent storage associated to its own GRFID. */
134 if (grfid == 0xFFFFFFFF) grfid = this->ro.grffile->grfid;
135 if (grfid != this->ro.grffile->grfid) return;
136
137 /* Check if the storage exists. */
138 std::list<PersistentStorage *>::iterator iter;
139 for (iter = t->psa_list.begin(); iter != t->psa_list.end(); iter++) {
140 if ((*iter)->grfid == grfid) {
141 (*iter)->StoreValue(pos, value);
142 return;
143 }
144 }
145
146 /* Create a new storage. */
147 assert(PersistentStorage::CanAllocateItem());
148 PersistentStorage *psa = new PersistentStorage(grfid, GSF_FAKE_TOWNS, this->t->xy);
149 psa->StoreValue(pos, value);
150 t->psa_list.push_back(psa);
151 }
152
159 TownResolverObject::TownResolverObject(const struct GRFFile *grffile, Town *t, bool readonly)
160 : ResolverObject(grffile), town_scope(*this, t, readonly)
161 {
162 }
163