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
8 /** @file cargomonitor_sl.cpp Code handling saving and loading of Cargo monitoring. */
9
10 #include "../stdafx.h"
11
12 #include "saveload.h"
13 #include "compat/cargomonitor_sl_compat.h"
14
15 #include "../cargomonitor.h"
16
17 #include "../safeguards.h"
18
19 /** Temporary storage of cargo monitoring data for loading or saving it. */
20 struct TempStorage {
21 CargoMonitorID number;
22 uint32 amount;
23 };
24
25 /** Description of the #TempStorage structure for the purpose of load and save. */
26 static const SaveLoad _cargomonitor_pair_desc[] = {
27 SLE_VAR(TempStorage, number, SLE_UINT32),
28 SLE_VAR(TempStorage, amount, SLE_UINT32),
29 };
30
FixupCargoMonitor(CargoMonitorID number)31 static CargoMonitorID FixupCargoMonitor(CargoMonitorID number)
32 {
33 /* Between SLV_EXTEND_CARGOTYPES and SLV_FIX_CARGO_MONITOR, the
34 * CargoMonitorID structure had insufficient packing for more
35 * than 32 cargo types. Here we have to shuffle bits to account
36 * for the change.
37 * Company moved from bits 24-31 to 25-28.
38 * Cargo type increased from bits 19-23 to 19-24.
39 */
40 SB(number, 25, 4, GB(number, 24, 4));
41 SB(number, 29, 3, 0);
42 ClrBit(number, 24);
43 return number;
44 }
45
46 /** #_cargo_deliveries monitoring map. */
47 struct CMDLChunkHandler : ChunkHandler {
CMDLChunkHandlerCMDLChunkHandler48 CMDLChunkHandler() : ChunkHandler('CMDL', CH_TABLE) {}
49
SaveCMDLChunkHandler50 void Save() const override
51 {
52 SlTableHeader(_cargomonitor_pair_desc);
53
54 TempStorage storage;
55
56 int i = 0;
57 CargoMonitorMap::const_iterator iter = _cargo_deliveries.begin();
58 while (iter != _cargo_deliveries.end()) {
59 storage.number = iter->first;
60 storage.amount = iter->second;
61
62 SlSetArrayIndex(i);
63 SlObject(&storage, _cargomonitor_pair_desc);
64
65 i++;
66 iter++;
67 }
68 }
69
LoadCMDLChunkHandler70 void Load() const override
71 {
72 const std::vector<SaveLoad> slt = SlCompatTableHeader(_cargomonitor_pair_desc, _cargomonitor_pair_sl_compat);
73
74 TempStorage storage;
75 bool fix = IsSavegameVersionBefore(SLV_FIX_CARGO_MONITOR);
76
77 ClearCargoDeliveryMonitoring();
78 for (;;) {
79 if (SlIterateArray() < 0) break;
80 SlObject(&storage, slt);
81
82 if (fix) storage.number = FixupCargoMonitor(storage.number);
83
84 std::pair<CargoMonitorID, uint32> p(storage.number, storage.amount);
85 _cargo_deliveries.insert(p);
86 }
87 }
88 };
89
90 /** #_cargo_pickups monitoring map. */
91 struct CMPUChunkHandler : ChunkHandler {
CMPUChunkHandlerCMPUChunkHandler92 CMPUChunkHandler() : ChunkHandler('CMPU', CH_TABLE) {}
93
SaveCMPUChunkHandler94 void Save() const override
95 {
96 SlTableHeader(_cargomonitor_pair_desc);
97
98 TempStorage storage;
99
100 int i = 0;
101 CargoMonitorMap::const_iterator iter = _cargo_pickups.begin();
102 while (iter != _cargo_pickups.end()) {
103 storage.number = iter->first;
104 storage.amount = iter->second;
105
106 SlSetArrayIndex(i);
107 SlObject(&storage, _cargomonitor_pair_desc);
108
109 i++;
110 iter++;
111 }
112 }
113
LoadCMPUChunkHandler114 void Load() const override
115 {
116 const std::vector<SaveLoad> slt = SlCompatTableHeader(_cargomonitor_pair_desc, _cargomonitor_pair_sl_compat);
117
118 TempStorage storage;
119 bool fix = IsSavegameVersionBefore(SLV_FIX_CARGO_MONITOR);
120
121 ClearCargoPickupMonitoring();
122 for (;;) {
123 if (SlIterateArray() < 0) break;
124 SlObject(&storage, slt);
125
126 if (fix) storage.number = FixupCargoMonitor(storage.number);
127
128 std::pair<CargoMonitorID, uint32> p(storage.number, storage.amount);
129 _cargo_pickups.insert(p);
130 }
131 }
132 };
133
134 /** Chunk definition of the cargomonitoring maps. */
135 static const CMDLChunkHandler CMDL;
136 static const CMPUChunkHandler CMPU;
137 static const ChunkHandlerRef cargomonitor_chunk_handlers[] = {
138 CMDL,
139 CMPU,
140 };
141
142 extern const ChunkHandlerTable _cargomonitor_chunk_handlers(cargomonitor_chunk_handlers);
143