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
|
/* 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.
*
* $URL$
* $Id$
*
*/
/*
* This code is based on original Hugo Trilogy source code
*
* Copyright (c) 1989-1995 David P. Gray
*
*/
#include "common/system.h"
#include "hugo/hugo.h"
#include "hugo/file.h"
#include "hugo/schedule.h"
#include "hugo/display.h"
#include "hugo/text.h"
#include "hugo/util.h"
namespace Hugo {
FileManager_v2d::FileManager_v2d(HugoEngine *vm) : FileManager_v1d(vm) {
}
FileManager_v2d::~FileManager_v2d() {
}
/**
* Open "database" file (packed files)
*/
void FileManager_v2d::openDatabaseFiles() {
debugC(1, kDebugFile, "openDatabaseFiles");
if (!_stringArchive.open(getStringFilename()))
error("File not found: %s", getStringFilename());
if (!_sceneryArchive1.open(getSceneryFilename()))
error("File not found: %s", getSceneryFilename());
if (!_objectsArchive.open(getObjectFilename()))
error("File not found: %s", getObjectFilename());
}
/**
* Close "Database" files
*/
void FileManager_v2d::closeDatabaseFiles() {
debugC(1, kDebugFile, "closeDatabaseFiles");
_stringArchive.close();
_sceneryArchive1.close();
_objectsArchive.close();
}
/**
* Read a PCX image into dib_a
*/
void FileManager_v2d::readBackground(int screenIndex) {
debugC(1, kDebugFile, "readBackground(%d)", screenIndex);
_sceneryArchive1.seek((uint32) screenIndex * sizeof(sceneBlock_t), SEEK_SET);
sceneBlock_t sceneBlock; // Read a database header entry
sceneBlock.scene_off = _sceneryArchive1.readUint32LE();
sceneBlock.scene_len = _sceneryArchive1.readUint32LE();
sceneBlock.b_off = _sceneryArchive1.readUint32LE();
sceneBlock.b_len = _sceneryArchive1.readUint32LE();
sceneBlock.o_off = _sceneryArchive1.readUint32LE();
sceneBlock.o_len = _sceneryArchive1.readUint32LE();
sceneBlock.ob_off = _sceneryArchive1.readUint32LE();
sceneBlock.ob_len = _sceneryArchive1.readUint32LE();
_sceneryArchive1.seek(sceneBlock.scene_off, SEEK_SET);
// Read the image into dummy seq and static dib_a
seq_t *dummySeq; // Image sequence structure for Read_pcx
dummySeq = readPCX(_sceneryArchive1, 0, _vm->_screen->getFrontBuffer(), true, _vm->_text->getScreenNames(screenIndex));
free(dummySeq);
}
/**
* Open and read in an overlay file, close file
*/
void FileManager_v2d::readOverlay(int screenNum, image_pt image, ovl_t overlayType) {
debugC(1, kDebugFile, "readOverlay(%d, ...)", screenNum);
image_pt tmpImage = image; // temp ptr to overlay file
_sceneryArchive1.seek((uint32)screenNum * sizeof(sceneBlock_t), SEEK_SET);
sceneBlock_t sceneBlock; // Database header entry
sceneBlock.scene_off = _sceneryArchive1.readUint32LE();
sceneBlock.scene_len = _sceneryArchive1.readUint32LE();
sceneBlock.b_off = _sceneryArchive1.readUint32LE();
sceneBlock.b_len = _sceneryArchive1.readUint32LE();
sceneBlock.o_off = _sceneryArchive1.readUint32LE();
sceneBlock.o_len = _sceneryArchive1.readUint32LE();
sceneBlock.ob_off = _sceneryArchive1.readUint32LE();
sceneBlock.ob_len = _sceneryArchive1.readUint32LE();
uint32 i = 0;
switch (overlayType) {
case kOvlBoundary:
_sceneryArchive1.seek(sceneBlock.b_off, SEEK_SET);
i = sceneBlock.b_len;
break;
case kOvlOverlay:
_sceneryArchive1.seek(sceneBlock.o_off, SEEK_SET);
i = sceneBlock.o_len;
break;
case kOvlBase:
_sceneryArchive1.seek(sceneBlock.ob_off, SEEK_SET);
i = sceneBlock.ob_len;
break;
default:
error("Bad overlayType: %d", overlayType);
break;
}
if (i == 0) {
for (int idx = 0; idx < kOvlSize; idx++)
image[idx] = 0;
return;
}
// Read in the overlay file using MAC Packbits. (We're not proud!)
int16 k = 0; // byte count
do {
int8 data = _sceneryArchive1.readByte(); // Read a code byte
if ((byte)data == 0x80) // Noop
;
else if (data >= 0) { // Copy next data+1 literally
for (i = 0; i <= (byte)data; i++, k++)
*tmpImage++ = _sceneryArchive1.readByte();
} else { // Repeat next byte -data+1 times
int16 j = _sceneryArchive1.readByte();
for (i = 0; i < (byte)(-data + 1); i++, k++)
*tmpImage++ = j;
}
} while (k < kOvlSize);
}
/**
* Fetch string from file, decode and return ptr to string in memory
*/
char *FileManager_v2d::fetchString(int index) {
debugC(1, kDebugFile, "fetchString(%d)", index);
static char buffer[kMaxBoxChar];
// Get offset to string[index] (and next for length calculation)
_stringArchive.seek((uint32)index * sizeof(uint32), SEEK_SET);
uint32 off1, off2;
if (_stringArchive.read((char *)&off1, sizeof(uint32)) == 0)
error("An error has occurred: bad String offset");
if (_stringArchive.read((char *)&off2, sizeof(uint32)) == 0)
error("An error has occurred: bad String offset");
// Check size of string
if ((off2 - off1) >= (uint32) kMaxBoxChar)
error("Fetched string too long!");
// Position to string and read it into gen purpose _textBoxBuffer
_stringArchive.seek(off1, SEEK_SET);
if (_stringArchive.read(buffer, (uint16)(off2 - off1)) == 0)
error("An error has occurred: fetchString");
// Null terminate, decode and return it
buffer[off2-off1] = '\0';
_vm->_scheduler->decodeString(buffer);
return buffer;
}
} // End of namespace Hugo
|
