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
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "common/endian.h"
#include "common/savefile.h"
#include "gob/gob.h"
#include "gob/save/saveconverter.h"
#include "gob/save/savefile.h"
#include "gob/save/savehandler.h"
namespace Gob {
SaveConverter_v3::SaveConverter_v3(GobEngine *vm, const Common::String &fileName) :
SaveConverter(vm, fileName) {
}
SaveConverter_v3::~SaveConverter_v3() {
}
int SaveConverter_v3::isOldSave(Common::InSaveFile **save) const {
uint32 varSize = SaveHandler::getVarSize(_vm);
if (varSize == 0)
return 0;
uint32 saveSize = getActualSize(save);
if (saveSize == 0)
return 0;
// The size of the old save always follows one of these rules
if (saveSize == (varSize * 2 + kSlotNameLength + 1000))
return 1; // No screenshot
if (saveSize == (varSize * 2 + kSlotNameLength + 1000 + 19968))
return 2; // Big screenshot, Goblins 3
if (saveSize == (varSize * 2 + kSlotNameLength + 1000 + 4768))
return 3; // Small screenshot, Lost in Time
// Not an old save, clean up
if (save) {
delete *save;
*save = 0;
}
return 0;
}
char *SaveConverter_v3::getDescription(Common::SeekableReadStream &save) const {
// The description starts at 1000
if (!save.seek(1000))
return 0;
char *desc = new char[kSlotNameLength];
// Read the description
if (save.read(desc, kSlotNameLength) != kSlotNameLength) {
delete desc;
return 0;
}
return desc;
}
bool SaveConverter_v3::loadFail(SavePartInfo *info, SavePartVars *vars,
SavePartSprite *sprite, Common::InSaveFile *save) {
delete info;
delete vars;
delete sprite;
delete save;
clear();
return false;
}
void SaveConverter_v3::getScreenShotProps(int type,
bool &used, uint32 &width, uint32 &height) {
switch (type) {
case 2:
used = true;
width = 120;
height = 160;
break;
case 3:
used = true;
width = 80;
height = 50;
break;
default:
used = false;
width = 0;
height = 0;
break;
}
}
// Loads the old save by constructing a new save containing the old save's data
bool SaveConverter_v3::load() {
clear();
uint32 varSize = SaveHandler::getVarSize(_vm);
if (varSize == 0)
return false;
Common::InSaveFile *save;
int type = isOldSave(&save);
// Test if it's an old savd
if ((type == 0) || !save)
return false;
displayWarning();
bool screenShot;
uint32 screenShotWidth;
uint32 screenShotHeight;
getScreenShotProps(type, screenShot, screenShotWidth, screenShotHeight);
SaveWriter writer(screenShot ? 3 : 2, 0);
SavePartInfo *info = readInfo(*save, kSlotNameLength, false);
if (!info)
return loadFail(0, 0, 0, save);
SavePartVars *vars = readVars(*save, varSize, true);
if (!vars)
return loadFail(info, 0, 0, save);
if (screenShot) {
SavePartSprite *sprite = readSprite(*save, screenShotWidth, screenShotHeight, true);
if (!sprite)
return loadFail(info, vars, 0, save);
if (!writer.writePart(2, sprite))
return loadFail(info, vars, sprite, save);
delete sprite;
}
// We don't need the save anymore
delete save;
// Write all parts
if (!writer.writePart(0, info))
return loadFail(info, vars, 0, 0);
if (!writer.writePart(1, vars))
return loadFail(info, vars, 0, 0);
// We don't need those anymore
delete info;
delete vars;
// Create the final read stream
if (!createStream(writer))
return loadFail(0, 0, 0, 0);
return true;
}
} // End of namespace Gob
|
