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
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2005 The ScummVM project
*
* This program 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; either version 2
* of the License, or (at your option) any later version.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#ifndef SAVELOAD_H
#define SAVELOAD_H
#include "common/scummsys.h"
class SaveFile;
namespace Scumm {
// Support for "old" savegames (made with 2501 CVS build)
// Can be useful for other ports too :)
#define VER(x) x
#define CURRENT_VER 45
// To work around a warning in GCC 3.2 (and 3.1 ?) regarding non-POD types,
// we use a small trick: instead of 0 we use 42. Why? Well, it seems newer GCC
// versions have a heuristic built in to detect "offset-of" patterns - which is exactly
// what our OFFS macro does. Now, for non-POD types this is not really legal, because
// member need not be at a fixed offset relative to the variable, even if they are in
// current reality (many of our complex structs are non-POD; for an explanation of
// what POD means refer to http://www-cpd.fnal.gov/personal/wb/boost/ISOcxx/doc/POD.html)
#define OFFS(type,item) (((long)(&((type*)42)->type::item))-42)
#define SIZE(type,item) sizeof(((type*)42)->type::item)
// Any item that is still in use automatically gets a maxVersion equal to CURRENT_VER
#define MKLINE(type,item,saveas,minVer) {OFFS(type,item),saveas,SIZE(type,item),minVer,CURRENT_VER}
#define MKARRAY(type,item,saveas,dim,minVer) {OFFS(type,item),128|saveas,SIZE(type,item),minVer,CURRENT_VER}, {dim,1,0,0,0}
#define MKARRAY2(type,item,saveas,dim,dim2,rowlen,minVer) {OFFS(type,item),128|saveas,SIZE(type,item),minVer,CURRENT_VER}, {dim,dim2,rowlen,0,0}
// Use this if you have an entry that used to be smaller:
#define MKLINE_OLD(type,item,saveas,minVer,maxVer) {OFFS(type,item),saveas,SIZE(type,item),minVer,maxVer}
#define MKARRAY_OLD(type,item,saveas,dim,minVer,maxVer) {OFFS(type,item),128|saveas,SIZE(type,item),minVer,maxVer}, {dim,1,0,0,0}
#define MKARRAY2_OLD(type,item,saveas,dim,dim2,rowlen,minVer,maxVer) {OFFS(type,item),128|saveas,SIZE(type,item),minVer,maxVer}, {dim,dim2,rowlen,0,0}
// An obsolete item/array, to be ignored upon load. We retain the type/item params to make it easier to debug.
// Obsolete items have size == 0.
#define MK_OBSOLETE(type,item,saveas,minVer,maxVer) {0,saveas,0,minVer,maxVer}
#define MK_OBSOLETE_ARRAY(type,item,saveas,dim,minVer,maxVer) {0,128|saveas,0,minVer,maxVer}, {dim,1,0,0,0}
#define MK_OBSOLETE_ARRAY2(type,item,saveas,dim,dim2,rowlen,minVer,maxVer) {0,128|saveas,0,minVer,maxVer}, {dim,dim2,rowlen,0,0}
// End marker
#define MKEND() {0xFFFF,0xFF,0xFF,0,0}
// A reference
#define MKREF(type,item,refid,minVer) {OFFS(type,item),refid,0xFF,minVer,CURRENT_VER}
// An obsolete reference.
#define MK_OBSOLETE_REF(type,item,refid,minVer,maxVer) {0,sleUint16,0,minVer,maxVer}
enum {
sleByte = 1,
sleUint8 = 1,
sleInt8 = 1,
sleInt16 = 2,
sleUint16 = 3,
sleInt32 = 4,
sleUint32 = 5
};
struct SaveLoadEntry {
uint32 offs; // or: array dimension
uint16 type; // or: array dimension 2
uint16 size; // or: array row length
uint8 minVersion;
uint8 maxVersion;
};
typedef int SerializerSaveReference(void *me, byte type, void *ref);
typedef void *SerializerLoadReference(void *me, byte type, int ref);
class Serializer {
public:
Serializer(SaveFile *stream, bool saveOrLoad, uint32 savegameVersion)
: _save_ref(0), _load_ref(0), _ref_me(0),
_saveLoadStream(stream), _saveOrLoad(saveOrLoad),
_savegameVersion(savegameVersion)
{ }
SerializerSaveReference *_save_ref;
SerializerLoadReference *_load_ref;
void *_ref_me;
void saveLoadArrayOf(void *b, int len, int datasize, byte filetype);
void saveLoadArrayOf(void *b, int num, int datasize, const SaveLoadEntry *sle);
void saveLoadEntries(void *d, const SaveLoadEntry *sle);
bool isSaving() { return _saveOrLoad; }
bool isLoading() { return !_saveOrLoad; }
uint32 getVersion() { return _savegameVersion; }
void saveUint32(uint32 d);
void saveUint16(uint16 d);
void saveByte(byte b);
byte loadByte();
uint16 loadUint16();
uint32 loadUint32();
void saveBytes(void *b, int len);
void loadBytes(void *b, int len);
protected:
SaveFile *_saveLoadStream;
bool _saveOrLoad;
uint32 _savegameVersion;
void saveArrayOf(void *b, int len, int datasize, byte filetype);
void loadArrayOf(void *b, int len, int datasize, byte filetype);
void saveEntries(void *d, const SaveLoadEntry *sle);
void loadEntries(void *d, const SaveLoadEntry *sle);
};
} // End of namespace Scumm
#endif
|
