aboutsummaryrefslogtreecommitdiff
path: root/engines/tinsel/drives.cpp
blob: 6803ababa2e38c26c03c4dfb3069059adbaf2033 (plain)
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
/* 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.
 *
 * $URL$
 * $Id$
 *
 * CD/drive handling functions
 */

#include "gui/message.h"
#include "tinsel/drives.h"
#include "tinsel/scene.h"
#include "tinsel/tinsel.h"
#include "tinsel/sched.h"
#include "tinsel/strres.h"

namespace Tinsel {

char currentCD = '1';
static uint32 cdFlags[] = { fCd1, fCd2, fCd3, fCd4, fCd5, fCd6, fCd7, fCd8 };

static bool bChangingCD = false;
static char nextCD = '\0';


void CdCD(CORO_PARAM) {
	CORO_BEGIN_CONTEXT;
	CORO_END_CONTEXT(_ctx);

	CORO_BEGIN_CODE(_ctx);

	while (bChangingCD) {
		if (g_scheduler->getCurrentProcess()) {
			// FIXME: CdCD gets passed a nullContext in RegisterGlobals() and
			//        PrimeSceneHopper(), because I didn't know how to get a proper
			//        context without converting the whole calling stack to CORO'd
			//        functions. If these functions really get called while a CD
			//        change is requested, this needs to be resolved.
			if (coroParam == nullContext)
				error("CdCD needs context!");
			CORO_SLEEP(1);
		} else
			error("No current process in CdCD()!");
	}

	CORO_END_CODE;
}

int GetCurrentCD(void) {
	// count from 1
	return (currentCD - '1' + 1);
}

void SetCD(int flags) {
	if (flags & cdFlags[currentCD - '1'])
		return;

	error("SetCD() problem");
}

int GetCD(int flags) {
	int i;
	char cd = '\0';

	if (flags & cdFlags[currentCD - '1'])
		return GetCurrentCD();

	for (i = 0; i < 8; i++) {
		if (flags & cdFlags[i]) {
			cd = (char)(i + '1');
			break;
		}
	}
	assert(i != 8);

	nextCD = cd;
	return cd;
}

static uint32 lastTime = 0;
extern LANGUAGE sampleLanguage;

void DoCdChange(void) {
	if (bChangingCD && (g_system->getMillis() > (lastTime + 1000))) {
		lastTime = g_system->getMillis();
		_vm->_sound->closeSampleStream();

		// Use the filesize of the sample file to determine, for Discworld 2, which CD it is
		if (TinselV2) {
			TinselFile f;
			if (!f.open(_vm->getSampleFile(sampleLanguage)))
				// No CD present
				return;

			char sampleCdNumber = (f.size() >= (200 * 1024 * 1024)) ? '1' : '2';

			f.close();

			if (currentCD != sampleCdNumber)
				return;
		}

		_vm->_sound->openSampleFiles();
		ChangeLanguage(TextLanguage());
		bChangingCD = false;
	}
}

void SetNextCD(int cdNumber) {
	assert(cdNumber == 1 || cdNumber == 2);

	nextCD = (char)(cdNumber + '1' - 1);
}

bool GotoCD(void) {
	// WORKAROUND: Somehow, CdDoChange() is called twice... Hopefully, this guard helps
	if (currentCD == nextCD)
		return false;

	currentCD = nextCD;

/*	if (bNoCD)	{
		strcpy(cdDirectory, hdDirectory);
		cdLastBit[3] = currentCD;
		strcat(cdDirectory, cdLastBit);
	}
*/
	bChangingCD = true;

	return true;
}

bool TinselFile::_warningShown = false;

bool TinselFile::open(const Common::String &filename) {
	if (Common::File::open(filename)) {
		// If it's the sample file, strip off the CD number from the filename


		return true;
	}

	if (!TinselV2)
		return false;

	// Check if the file being requested is the *1.* or *2.* files
	const char *fname = filename.c_str();
	const char *p = strchr(fname, '1');
	if (!p)
		p = strchr(fname, '2');
	if (!p || (*(p + 1) != '.'))
		return false;

	// Form a filename without the CD number character
	char newFilename[50];
	strncpy(newFilename, fname, p - fname);
	strcpy(newFilename + (p - fname), p + 1);

	return Common::File::open(newFilename);
}

} // end of namespace Tinsel