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
|
/* 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.
*
*/
#include "common/file.h"
#include "common/memstream.h"
#include "titanic/support/files_manager.h"
#include "titanic/game_manager.h"
#include "titanic/titanic.h"
namespace Titanic {
CFilesManager::CFilesManager(TitanicEngine *vm) : _vm(vm), _gameManager(nullptr),
_assetsPath("Assets"), _drive(-1) {
loadResourceIndex();
}
CFilesManager::~CFilesManager() {
_datFile.close();
}
void CFilesManager::loadResourceIndex() {
if (!_datFile.open("titanic.dat"))
error("Could not find titanic.dat data file");
uint headerId = _datFile.readUint32BE();
uint version = _datFile.readUint16LE();
if (headerId != MKTAG('S', 'V', 'T', 'N') || version < 1)
error("Invalid data file");
// Read in entries
uint offset, size;
char c;
Common::String resourceName;
for (;;) {
offset = _datFile.readUint32LE();
size = _datFile.readUint32LE();
if (offset == 0 && size == 0)
break;
Common::String resName;
while ((c = _datFile.readByte()) != '\0')
resName += c;
_resources[resName] = ResourceEntry(offset, size);
}
}
bool CFilesManager::fileExists(const CString &name) {
Common::File f;
return f.exists(name);
}
bool CFilesManager::scanForFile(const CString &name) {
if (name.empty())
return false;
CString filename = name;
filename.toLowercase();
if (filename[0] == 'y' || filename[0] == 'z')
return true;
else if (filename[0] < 'a' || filename[0] > 'c')
return false;
CString fname = filename;
int idx = fname.indexOf('#');
if (idx >= 0) {
fname = fname.left(idx);
fname += ".st";
}
// Return true if the file exists
if (fileExists(fname))
return true;
// Couldn't find file. Start by calling the game manager's viewChange
// method, which handles all active scene objects freeing their resources
if (_gameManager)
_gameManager->viewChange();
return false;
}
void CFilesManager::loadDrive() {
assert(_drive == -1);
resetView();
}
void CFilesManager::insertCD(CScreenManager *screenManager) {
// We not support running game directly from the original CDs,
// so this method can remain stubbed
}
void CFilesManager::resetView() {
if (_gameManager) {
_gameManager->_gameState.setMode(GSMODE_INTERACTIVE);
_gameManager->initBounds();
}
}
void CFilesManager::preload(const CString &name) {
// We don't currently do any preloading of resources
}
Common::SeekableReadStream *CFilesManager::getResource(const CString &str) {
ResourceEntry resEntry = _resources[str];
// If we're running the German version, check for the existance of
// a German specific version of the given resource
if (_vm->isGerman() && _resources.contains(str + "/DE"))
resEntry = _resources[str + "/DE"];
_datFile.seek(resEntry._offset);
return (resEntry._size > 0) ? _datFile.readStream(resEntry._size) :
new Common::MemoryReadStream(nullptr, 0);
}
} // End of namespace Titanic
|
