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
|
/*
* 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 waypoint_sl.cpp Code handling saving and loading of waypoints */
#include "../stdafx.h"
#include "../waypoint_base.h"
#include "../newgrf_station.h"
#include "../vehicle_base.h"
#include "../town.h"
#include "../newgrf.h"
#include "table/strings.h"
#include "saveload_internal.h"
#include "../safeguards.h"
/** Helper structure to convert from the old waypoint system. */
struct OldWaypoint {
size_t index;
TileIndex xy;
TownID town_index;
Town *town;
uint16 town_cn;
StringID string_id;
char *name;
uint8 delete_ctr;
Date build_date;
uint8 localidx;
uint32 grfid;
const StationSpec *spec;
Owner owner;
size_t new_index;
};
/** Temporary array with old waypoints. */
static std::vector<OldWaypoint> _old_waypoints;
/**
* Update the waypoint orders to get the new waypoint ID.
* @param o the order 'list' to check.
*/
static void UpdateWaypointOrder(Order *o)
{
if (!o->IsType(OT_GOTO_WAYPOINT)) return;
for (OldWaypoint &wp : _old_waypoints) {
if (wp.index != o->GetDestination()) continue;
o->SetDestination((DestinationID)wp.new_index);
return;
}
}
/**
* Perform all steps to upgrade from the old waypoints to the new version
* that uses station. This includes some old saveload mechanics.
*/
void MoveWaypointsToBaseStations()
{
/* In version 17, ground type is moved from m2 to m4 for depots and
* waypoints to make way for storing the index in m2. The custom graphics
* id which was stored in m4 is now saved as a grf/id reference in the
* waypoint struct. */
if (IsSavegameVersionBefore(SLV_17)) {
for (OldWaypoint &wp : _old_waypoints) {
if (wp.delete_ctr != 0) continue; // The waypoint was deleted
/* Waypoint indices were not added to the map prior to this. */
_m[wp.xy].m2 = (StationID)wp.index;
if (HasBit(_m[wp.xy].m3, 4)) {
wp.spec = StationClass::Get(STAT_CLASS_WAYP)->GetSpec(_m[wp.xy].m4 + 1);
}
}
} else {
/* As of version 17, we recalculate the custom graphic ID of waypoints
* from the GRF ID / station index. */
for (OldWaypoint &wp : _old_waypoints) {
StationClass* stclass = StationClass::Get(STAT_CLASS_WAYP);
for (uint i = 0; i < stclass->GetSpecCount(); i++) {
const StationSpec *statspec = stclass->GetSpec(i);
if (statspec != nullptr && statspec->grf_prop.grffile->grfid == wp.grfid && statspec->grf_prop.local_id == wp.localidx) {
wp.spec = statspec;
break;
}
}
}
}
if (!Waypoint::CanAllocateItem(_old_waypoints.size())) SlError(STR_ERROR_TOO_MANY_STATIONS_LOADING);
/* All saveload conversions have been done. Create the new waypoints! */
for (OldWaypoint &wp : _old_waypoints) {
Waypoint *new_wp = new Waypoint(wp.xy);
new_wp->town = wp.town;
new_wp->town_cn = wp.town_cn;
new_wp->name = wp.name;
new_wp->delete_ctr = 0; // Just reset delete counter for once.
new_wp->build_date = wp.build_date;
new_wp->owner = wp.owner;
new_wp->string_id = STR_SV_STNAME_WAYPOINT;
TileIndex t = wp.xy;
if (IsTileType(t, MP_RAILWAY) && GetRailTileType(t) == 2 /* RAIL_TILE_WAYPOINT */ && _m[t].m2 == wp.index) {
/* The tile might've been reserved! */
bool reserved = !IsSavegameVersionBefore(SLV_100) && HasBit(_m[t].m5, 4);
/* The tile really has our waypoint, so reassign the map array */
MakeRailWaypoint(t, GetTileOwner(t), new_wp->index, (Axis)GB(_m[t].m5, 0, 1), 0, GetRailType(t));
new_wp->facilities |= FACIL_TRAIN;
new_wp->owner = GetTileOwner(t);
SetRailStationReservation(t, reserved);
if (wp.spec != nullptr) {
SetCustomStationSpecIndex(t, AllocateSpecToStation(wp.spec, new_wp, true));
}
new_wp->rect.BeforeAddTile(t, StationRect::ADD_FORCE);
}
wp.new_index = new_wp->index;
}
/* Update the orders of vehicles */
OrderList *ol;
FOR_ALL_ORDER_LISTS(ol) {
if (ol->GetFirstSharedVehicle()->type != VEH_TRAIN) continue;
for (Order *o = ol->GetFirstOrder(); o != nullptr; o = o->next) UpdateWaypointOrder(o);
}
Vehicle *v;
FOR_ALL_VEHICLES(v) {
if (v->type != VEH_TRAIN) continue;
UpdateWaypointOrder(&v->current_order);
}
_old_waypoints.clear();
_old_waypoints.shrink_to_fit();
}
static const SaveLoad _old_waypoint_desc[] = {
SLE_CONDVAR(OldWaypoint, xy, SLE_FILE_U16 | SLE_VAR_U32, SL_MIN_VERSION, SLV_6),
SLE_CONDVAR(OldWaypoint, xy, SLE_UINT32, SLV_6, SL_MAX_VERSION),
SLE_CONDVAR(OldWaypoint, town_index, SLE_UINT16, SLV_12, SLV_122),
SLE_CONDREF(OldWaypoint, town, REF_TOWN, SLV_122, SL_MAX_VERSION),
SLE_CONDVAR(OldWaypoint, town_cn, SLE_FILE_U8 | SLE_VAR_U16, SLV_12, SLV_89),
SLE_CONDVAR(OldWaypoint, town_cn, SLE_UINT16, SLV_89, SL_MAX_VERSION),
SLE_CONDVAR(OldWaypoint, string_id, SLE_STRINGID, SL_MIN_VERSION, SLV_84),
SLE_CONDSTR(OldWaypoint, name, SLE_STR, 0, SLV_84, SL_MAX_VERSION),
SLE_VAR(OldWaypoint, delete_ctr, SLE_UINT8),
SLE_CONDVAR(OldWaypoint, build_date, SLE_FILE_U16 | SLE_VAR_I32, SLV_3, SLV_31),
SLE_CONDVAR(OldWaypoint, build_date, SLE_INT32, SLV_31, SL_MAX_VERSION),
SLE_CONDVAR(OldWaypoint, localidx, SLE_UINT8, SLV_3, SL_MAX_VERSION),
SLE_CONDVAR(OldWaypoint, grfid, SLE_UINT32, SLV_17, SL_MAX_VERSION),
SLE_CONDVAR(OldWaypoint, owner, SLE_UINT8, SLV_101, SL_MAX_VERSION),
SLE_END()
};
static void Load_WAYP()
{
/* Precaution for when loading failed and it didn't get cleared */
_old_waypoints.clear();
int index;
while ((index = SlIterateArray()) != -1) {
/*C++17: OldWaypoint *wp = &*/ _old_waypoints.emplace_back();
OldWaypoint *wp = &_old_waypoints.back();
memset(wp, 0, sizeof(*wp));
wp->index = index;
SlObject(wp, _old_waypoint_desc);
}
}
static void Ptrs_WAYP()
{
for (OldWaypoint &wp : _old_waypoints) {
SlObject(&wp, _old_waypoint_desc);
if (IsSavegameVersionBefore(SLV_12)) {
wp.town_cn = (wp.string_id & 0xC000) == 0xC000 ? (wp.string_id >> 8) & 0x3F : 0;
wp.town = ClosestTownFromTile(wp.xy, UINT_MAX);
} else if (IsSavegameVersionBefore(SLV_122)) {
/* Only for versions 12 .. 122 */
if (!Town::IsValidID(wp.town_index)) {
/* Upon a corrupted waypoint we'll likely get here. The next step will be to
* loop over all Ptrs procs to nullptr the pointers. However, we don't know
* whether we're in the nullptr or "normal" Ptrs proc. So just clear the list
* of old waypoints we constructed and then this waypoint (and the other
* possibly corrupt ones) will not be queried in the nullptr Ptrs proc run. */
_old_waypoints.clear();
SlErrorCorrupt("Referencing invalid Town");
}
wp.town = Town::Get(wp.town_index);
}
if (IsSavegameVersionBefore(SLV_84)) {
wp.name = CopyFromOldName(wp.string_id);
}
}
}
extern const ChunkHandler _waypoint_chunk_handlers[] = {
{ 'CHKP', nullptr, Load_WAYP, Ptrs_WAYP, nullptr, CH_ARRAY | CH_LAST},
};
|
