aboutsummaryrefslogtreecommitdiff
path: root/base/main.cpp
blob: d0b1e304200560ae82728574ee7024cf7ff6edaa (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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001-2004 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.
 *
 * $Header$
 *
 */

/*! \mainpage %ScummVM Source Reference
 *
 * These pages contains a cross referenced documentation for the %ScummVM source code,
 * generated with Doxygen (http://www.doxygen.org) directly from the source.
 * Currently not much is actually properly documented, but at least you can get an overview
 * of almost all the classes, methods and variables, and how they interact.
 */
 
#include "stdafx.h"
#include "base/engine.h"
#include "base/gameDetector.h"
#include "base/plugins.h"
#include "base/version.h"
#include "common/config-manager.h"
#include "common/scaler.h"	// For GFX_NORMAL
#include "common/timer.h"
#include "gui/newgui.h"
#include "gui/launcher.h"
#include "gui/message.h"

#ifdef _WIN32_WCE
#include "backends/wince/CELauncherDialog.h" 
#endif

/*
 * Version string and build date string. These can be used by anything that
 * wants to display this information to the user (e.g. about dialog).
 *
 * Note: it would be very nice if we could instead of (or in addition to) the
 * build date present a date which corresponds to the date our source files
 * were last changed. To understand the difference, imagine that a user
 * makes a checkout of CVS on January 1, then after a week compiles it
 * (e.g. after doing a 'make clean'). The build date then will say January 8
 * even though the files were last changed on January 1.
 *
 * Another problem is that __DATE__/__TIME__ depend on the local time zone.
 *
 * It's clear that such a "last changed" date would be much more useful to us
 * for feedback purposes. After all, when somebody files a bug report, we
 * don't care about the build date, we want to know which date their checkout
 * was made. This is even more important now since anon CVS lags a few
 * days behind developer CVS.
 *
 * So, how could we implement this? At least on unix systems, a special script
 * could do it. Basically, that script would run over all .cpp/.h files and
 * parse the CVS 'Header' keyword we have in our file headers.
 * That line contains a date/time in GMT. Now, the script just has to collect
 * all these times and find the latest. This time then would be inserted into
 * a header file or so (common/date.h ?) which engine.cpp then could
 * include and put into a global variable analog to gScummVMBuildDate.
 *
 * Drawback: scanning all source/header files will be rather slow. Also, this
 * only works on systems which can run powerful enough scripts (so I guess
 * Visual C++ would be out of the game here? don't know VC enough to be sure).
 *
 * Another approach would be to somehow get CVS to update a global file
 * (e.g. LAST_CHANGED) whenever any checkins are made. That would be
 * faster and work w/o much "logic" on the client side, in particular no
 * scripts have to be run. The problem with this is that I am not even
 * sure it's actually possible! Modifying files during commit time is trivial
 * to setup, but I have no idea if/how one can also change files which are not
 * currently being commit'ed.
 */
const char *gScummVMVersion = "0.5.7cvs";
const char *gScummVMBuildDate = __DATE__ " " __TIME__;
const char *gScummVMFullVersion = "ScummVM 0.5.7cvs (" __DATE__ " " __TIME__ ")";
const char *gScummVMFeatures = ""
#ifdef USE_VORBIS
	"Vorbis "
#endif

#ifdef USE_FLAC
	"FLAC "
#endif

#ifdef USE_MAD
	"MP3 "
#endif

#ifdef USE_ALSA
	"ALSA "
#endif

#ifdef USE_ZLIB
	"zLib "
#endif

#ifdef USE_MPEG2
	"MPEG2 "
#endif
	;	

#if defined(WIN32) && defined(NO_CONSOLE)
#include <cstdio>
#define STDOUT_FILE	TEXT("stdout.txt")
#define STDERR_FILE	TEXT("stderr.txt")
#endif

#if defined(QTOPIA)
// FIXME - why exactly is this needed?
extern "C" int main(int argc, char *argv[]);
#endif

#if defined(MACOSX) || defined(QTOPIA)
#include <SDL.h>
#elif !defined(__MORPHOS__) && !defined(__DC__)
#undef main
#endif

#if defined (ALLEGRO_BACKEND)
#include "allegro.h"
#endif

#if defined(UNIX)
#include <signal.h>

#ifndef SCUMM_NEED_ALIGNMENT
static void handle_errors(int sig_num) {
	error("Your system does not support unaligned memory accesses. Please rebuild with SCUMM_NEED_ALIGNMENT (signal %d)", sig_num);
}
#endif

/* This function is here to test if the endianness / alignement compiled it is matching
   with the one at run-time. */
static void do_memory_test(void) {
	unsigned char test[8] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88 };
	unsigned int value;
	/* First test endianness */
#ifdef SCUMM_LITTLE_ENDIAN
	if (*((int *) test) != 0x44332211) {
		error("Compiled as LITTLE_ENDIAN on a big endian system. Please rebuild ");
	}
	value = 0x55443322;
#else
	if (*((int *) test) != 0x11223344) {
		error("Compiled as BIG_ENDIAN on a little endian system. Please rebuild ");
	}
	value = 0x22334455;
#endif
	/* Then check if one really supports unaligned memory accesses */
#ifndef SCUMM_NEED_ALIGNMENT
	signal(SIGBUS, handle_errors);
	signal(SIGABRT, handle_errors);
	signal(SIGSEGV, handle_errors);
	if (*((unsigned int *) ((char *) test + 1)) != value) {
		error("Your system does not support unaligned memory accesses. Please rebuild with SCUMM_NEED_ALIGNMENT ");
	}
	signal(SIGBUS, SIG_DFL);
	signal(SIGABRT, SIG_DFL);
	signal(SIGSEGV, SIG_DFL);
#endif
}

#endif

static int launcherDialog(GameDetector &detector, OSystem *system) {
	// Set the user specified graphics mode (if any).
	system->setGraphicsMode(ConfMan.get("gfx_mode").c_str());

	// FIXME - we need to call initSize() here so that we can display for example
	// the launcher dialog. But the Engine object will also call it again (possibly
	// with a different widht/height!9 However, this method is not for all OSystem 
	// implementations reentrant (it is so now for the SDL backend). Thus we need
	// to fix all backends to support it, if they don't already.
	system->initSize(320, 200);
	
	// FIXME - mouse cursors are currently always set via 8 bit data.
	// Thus for now we need to setup a dummy palette. On the long run, we might
	// want to add a set_mouse_cursor_overlay() method to OSystem, which would serve
	// two purposes:
	// 1) allow for 16 bit mouse cursors in overlay mode
	// 2) no need to backup & restore the mouse cursor before/after the overlay is shown
	const byte dummy_palette[] = {
		0, 0, 0, 0, 
		0, 0, 171, 0, 
		0, 171, 0, 0, 
		0, 171, 171, 0, 
		171, 0, 0, 0, 
		171, 0, 171, 0, 
		171, 87, 0, 0, 
		171, 171, 171, 0, 
		87, 87, 87, 0, 
		87, 87, 255, 0, 
		87, 255, 87, 0, 
		87, 255, 255, 0, 
		255, 87, 87, 0, 
		255, 87, 255, 0, 
		255, 255, 87, 0, 
		255, 255, 255, 0, 
	};

	system->setPalette(dummy_palette, 0, 16);

#ifndef _WIN32_WCE
	GUI::LauncherDialog dlg(detector);
#else
	CELauncherDialog dlg(detector);
#endif
	return dlg.runModal();
}

static void runGame(GameDetector &detector, OSystem *system) {

	// Set the window caption to the game name
	Common::String caption(ConfMan.get("description", detector._targetName));

	if (caption.isEmpty() && detector._game.description)
		caption = detector._game.description;
	if (caption.isEmpty())	
		caption = detector._targetName;
	if (!caption.isEmpty())	{
		system->setWindowCaption(caption.c_str());
	}
	
	const bool useDefaultGraphicsMode =
		!ConfMan.hasKey("gfx_mode", detector._targetName) ||
		!scumm_stricmp(ConfMan.get("gfx_mode", detector._targetName).c_str(), "normal") ||
		!scumm_stricmp(ConfMan.get("gfx_mode", detector._targetName).c_str(), "default");

	// See if the game should default to 1x scaler
	if (useDefaultGraphicsMode && (detector._game.features & GF_DEFAULT_TO_1X_SCALER)) {
		system->setGraphicsMode(GFX_NORMAL);
	} else {
		// Override global scaler with any game-specific define
		if (ConfMan.hasKey("gfx_mode")) {
			system->setGraphicsMode(ConfMan.get("gfx_mode").c_str());
		}
	}

	// (De)activate aspect-ratio correction as determined by the config settings
	system->setFeatureState(OSystem::kFeatureAspectRatioCorrection, ConfMan.getBool("aspect_ratio"));
	
	// (De)activate fullscreen mode as determined by the config settings 
	system->setFeatureState(OSystem::kFeatureFullscreenMode, ConfMan.getBool("fullscreen"));

	// Create the game engine
	Engine *engine = detector.createEngine(system);
	assert(engine);

	// Run the game engine
	engine->go();

	// Stop all sound processing now (this prevents some race conditions later on)
	system->clearSoundCallback();

	// Free up memory
	delete engine;
};

#ifndef _WIN32_WCE
extern "C" int main(int argc, char *argv[]) {
#else
extern "C" int scummvm_main(GameDetector &detector, int argc, char *argv[]) {
#endif
	char *cfgFilename = NULL, *s=argv[1];

#if defined(UNIX)
	/* On Unix, do a quick endian / alignement check before starting */
	do_memory_test();
#endif

// Code copied from SDL_main
#if defined(WIN32) && defined(NO_CONSOLE)

	/* Flush the output in case anything is queued */
	fclose(stdout);
	fclose(stderr);

	/* Redirect standard input and standard output */
	FILE *newfp = freopen(STDOUT_FILE, "w", stdout);
	if (newfp == NULL) {	/* This happens on NT */
#if !defined(stdout)
		stdout = fopen(STDOUT_FILE, "w");
#else
		newfp = fopen(STDOUT_FILE, "w");
		if (newfp) {
			*stdout = *newfp;
		}
#endif
	}
	newfp = freopen(STDERR_FILE, "w", stderr);
	if (newfp == NULL) {	/* This happens on NT */
#if !defined(stderr)
		stderr = fopen(STDERR_FILE, "w");
#else
		newfp = fopen(STDERR_FILE, "w");
		if (newfp) {
			*stderr = *newfp;
		}
#endif
	}
	setlinebuf(stdout);	/* Line buffered */
	setbuf(stderr, NULL);			/* No buffering */

#endif //defined(WIN32) && defined(USE_CONSOLE)


	// Quick preparse of command-line, looking for alt configfile path
	for (int i = argc - 1; i >= 1; i--) {
		s = argv[i];
		bool shortOpt = (s[0] == '-' && tolower(s[1]) == 'c');
		bool longOpt  = (s[0] == '-' && s[1] == '-'  && s[2] == 'c' && s[3] == 'o' \
				 && s[4] == 'n' && s[5] == 'f' && s[6] == 'i' && s[7] == 'g');

		if (shortOpt || longOpt) {
			if (longOpt) s+=9;
			if (shortOpt) s+=2;

			if (*s == '\0')
				break;

			cfgFilename = s;
			break;
		}
	}
	if (cfgFilename != NULL)
		ConfMan.switchFile(cfgFilename);

	// Update the config file
	ConfMan.set("versioninfo", gScummVMVersion, Common::ConfigManager::kApplicationDomain);

	// Load the plugins
	PluginManager::instance().loadPlugins();

	// Parse the command line information
#ifndef _WIN32_WCE
	GameDetector detector;
#endif
	detector.parseCommandLine(argc, argv);

	// Ensure the system object exists (it may have already been created 
	// at an earlier point, though!)
	OSystem *system = OSystem::instance();

	// Create the timer services
	g_timer = new Timer(system);

	// Set initial window caption
	system->setWindowCaption(gScummVMFullVersion);

	// Unless a game was specified, show the launcher dialog
	if (detector._targetName.isEmpty())
		launcherDialog(detector, system);

	// Uncomment the while loop, and the launcherDialog call, to allow
	// returning to the Launcher after an engine quit. Disabled currently
	// as it probably leaks memory like a sieve.
	//while(1) {
		// Verify the given game name is a valid supported game
		if (detector.detectMain()) {
			runGame(detector, system);

                	 // launcherDialog(detector, system);
		}
	//}

	// ...and quit (the return 0 should never be reached)
	system->quit();
	delete system;
	return 0;
}
// allegro needs this for some reason...
#if defined(ALLEGRO_BACKEND)
END_OF_MAIN();
#endif

/*
#if !defined(__PALM_OS__) && !defined(_WIN32_WCE)
void *operator new(size_t size) {
	return memset(malloc(size), 0xE7, size);
}

void operator delete(void *ptr) {
	free(ptr);
}

#undef free
void free_check(void *ptr) {
	if ((unsigned long)ptr == 0xE7E7E7E7UL) {
		printf("ERROR: freeing 0xE7E7E7E7\n");
		exit(1);
	}
	if ((unsigned long)ptr & 1) {
		warning("Freeing odd address 0x%x", ptr);
	}
	free(ptr);
}
#endif
*/