aboutsummaryrefslogtreecommitdiff
path: root/base/main.cpp
blob: ac4159f3787579e1dd35fcc4964d37b0c160a7cc (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
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
/* 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.
 *
 * $URL$
 * $Id$
 *
 */

/*! \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 "engines/engine.h"
#include "engines/metaengine.h"
#include "base/commandLine.h"
#include "base/plugins.h"
#include "base/version.h"

#include "common/archive.h"
#include "common/config-manager.h"
#include "common/debug.h"
#include "common/events.h"
#include "common/EventRecorder.h"
#include "common/file.h"
#include "common/fs.h"
#include "common/system.h"

#include "gui/GuiManager.h"
#include "gui/message.h"

#include "sound/audiocd.h"

#include "backends/keymapper/keymapper.h"

#if defined(_WIN32_WCE)
#include "backends/platform/wince/CELauncherDialog.h"
#elif defined(__DC__)
#include "backends/platform/dc/DCLauncherDialog.h"
#else
#include "gui/launcher.h"
#endif


static bool launcherDialog() {

	// Discard any command line options. Those that affect the graphics
	// mode and the others (like bootparam etc.) should not
	// blindly be passed to the first game launched from the launcher.
	ConfMan.getDomain(Common::ConfigManager::kTransientDomain)->clear();

#if defined(_WIN32_WCE)
	CELauncherDialog dlg;
#elif defined(__DC__)
	DCLauncherDialog dlg;
#else
	GUI::LauncherDialog dlg;
#endif
	return (dlg.runModal() != -1);
}

static const EnginePlugin *detectPlugin() {
	const EnginePlugin *plugin = 0;

	// Make sure the gameid is set in the config manager, and that it is lowercase.
	Common::String gameid(ConfMan.getActiveDomainName());
	assert(!gameid.empty());
	if (ConfMan.hasKey("gameid")) {
		gameid = ConfMan.get("gameid");

		// Set last selected game, that the game will be highlighted
		// on RTL
		ConfMan.set("lastselectedgame", ConfMan.getActiveDomainName(), Common::ConfigManager::kApplicationDomain);
		ConfMan.flushToDisk();
	}

	gameid.toLowercase();
	ConfMan.set("gameid", gameid);

	// Query the plugins and find one that will handle the specified gameid
	printf("User picked target '%s' (gameid '%s')...\n", ConfMan.getActiveDomainName().c_str(), gameid.c_str());
	printf("  Looking for a plugin supporting this gameid... ");
	GameDescriptor game = EngineMan.findGame(gameid, &plugin);

	if (plugin == 0) {
		printf("failed\n");
		warning("%s is an invalid gameid. Use the --list-games option to list supported gameid", gameid.c_str());
		return 0;
	} else {
		printf("%s\n", plugin->getName());
	}

	// FIXME: Do we really need this one?
	printf("  Starting '%s'\n", game.description().c_str());

	return plugin;
}

// TODO: specify the possible return values here
static Common::Error runGame(const EnginePlugin *plugin, OSystem &system, const Common::String &edebuglevels) {
	// Determine the game data path, for validation and error messages
	Common::FSNode dir(ConfMan.get("path"));
	Common::Error err = Common::kNoError;
	Engine *engine = 0;

	// Verify that the game path refers to an actual directory
	if (!(dir.exists() && dir.isDirectory()))
		err = Common::kInvalidPathError;

	// Create the game engine
	if (err == Common::kNoError)
		err = (*plugin)->createInstance(&system, &engine);

	// Check for errors
	if (!engine || err != Common::kNoError) {
		// TODO: Show an error dialog or so?
		// TODO: Also take 'err' into consideration...
		//GUI::MessageDialog alert("ScummVM could not find any game in the specified directory!");
		//alert.runModal();
		const char *errMsg = 0;
		switch (err) {
		case Common::kInvalidPathError:
			errMsg = "Invalid game path";
			break;
		case Common::kNoGameDataFoundError:
			errMsg = "Unable to locate game data";
			break;
		default:
			errMsg = "Unknown error";
		}

		warning("%s failed to instantiate engine: %s (target '%s', path '%s')",
			plugin->getName(),
			errMsg,
			ConfMan.getActiveDomainName().c_str(),
			dir.getPath().c_str()
			);

		// Autoadded is set only when no path was provided and
		// the game is run from command line.
		//
		// Thus, we remove this garbage entry
		//
		// Fixes bug #1544799
		if (ConfMan.hasKey("autoadded")) {
			ConfMan.removeGameDomain(ConfMan.getActiveDomainName().c_str());
		}

		return err;
	}

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

	if (caption.empty()) {
		caption = EngineMan.findGame(ConfMan.get("gameid")).description();
	}
	if (caption.empty())
		caption = ConfMan.getActiveDomainName();	// Use the domain (=target) name
	if (!caption.empty())	{
		system.setWindowCaption(caption.c_str());
	}

	//
	// Setup various paths in the SearchManager
	//

	// Add the game path to the directory search list
	SearchMan.addDirectory(dir.getPath(), dir, 0, 4);

	// Add extrapath (if any) to the directory search list
	if (ConfMan.hasKey("extrapath")) {
		dir = Common::FSNode(ConfMan.get("extrapath"));
		SearchMan.addDirectory(dir.getPath(), dir);
	}

	// If a second extrapath is specified on the app domain level, add that as well.
	if (ConfMan.hasKey("extrapath", Common::ConfigManager::kApplicationDomain)) {
		dir = Common::FSNode(ConfMan.get("extrapath", Common::ConfigManager::kApplicationDomain));
		SearchMan.addDirectory(dir.getPath(), dir);
	}

	// On creation the engine should have set up all debug levels so we can use
	// the command line arugments here
	Common::StringTokenizer tokenizer(edebuglevels, " ,");
	while (!tokenizer.empty()) {
		Common::String token = tokenizer.nextToken();
		if (!enableDebugChannel(token))
			warning("Engine does not support debug level '%s'", token.c_str());
	}

	// Inform backend that the engine is about to be run
	system.engineInit();

	// Run the engine
	Common::Error result = engine->run();

	// Inform backend that the engine finished
	system.engineDone();

	// We clear all debug levels again even though the engine should do it
	Common::clearAllDebugChannels();

	// Free up memory
	delete engine;

	// Reset the file/directory mappings
	SearchMan.clear();

	// Return result (== 0 means no error)
	return result;
}

static void setupGraphics(OSystem &system) {

	system.beginGFXTransaction();
		// Set the user specified graphics mode (if any).
		system.setGraphicsMode(ConfMan.get("gfx_mode").c_str());

		system.initSize(320, 200);

		if (ConfMan.hasKey("aspect_ratio"))
			system.setFeatureState(OSystem::kFeatureAspectRatioCorrection, ConfMan.getBool("aspect_ratio"));
		if (ConfMan.hasKey("fullscreen"))
			system.setFeatureState(OSystem::kFeatureFullscreenMode, ConfMan.getBool("fullscreen"));
	system.endGFXTransaction();

	// When starting up launcher for the first time, the user might have specified
	// a --gui-theme option, to allow that option to be working, we need to initialize
	// GUI here.
	// FIXME: Find a nicer way to allow --gui-theme to be working
	GUI::GuiManager::instance();

	// Set initial window caption
	system.setWindowCaption(gScummVMFullVersion);

	// Clear the main screen
	system.fillScreen(0);
}

static void setupKeymapper(OSystem &system) {

#ifdef ENABLE_KEYMAPPER
	using namespace Common;

	Keymapper *mapper = system.getEventManager()->getKeymapper();
	Keymap *globalMap = new Keymap("global");
	Action *act;
	HardwareKeySet *keySet;

	keySet = system.getHardwareKeySet();

	// Query backend for hardware keys and register them
	mapper->registerHardwareKeySet(keySet);

	// Now create the global keymap
	act = new Action(globalMap, "MENU", "Menu", kGenericActionType, kSelectKeyType);
	act->addKeyEvent(KeyState(KEYCODE_F5, ASCII_F5, 0));

	act = new Action(globalMap, "SKCT", "Skip", kGenericActionType, kActionKeyType);
	act->addKeyEvent(KeyState(KEYCODE_ESCAPE, ASCII_ESCAPE, 0));

	act = new Action(globalMap, "PAUS", "Pause", kGenericActionType, kStartKeyType);
	act->addKeyEvent(KeyState(KEYCODE_SPACE, ' ', 0));

	act = new Action(globalMap, "SKLI", "Skip line", kGenericActionType, kActionKeyType);
	act->addKeyEvent(KeyState(KEYCODE_PERIOD, '.', 0));

	act = new Action(globalMap, "VIRT", "Display keyboard", kVirtualKeyboardActionType);
	act->addKeyEvent(KeyState(KEYCODE_F7, ASCII_F7, 0));

	act = new Action(globalMap, "REMP", "Remap keys", kKeyRemapActionType);
	act->addKeyEvent(KeyState(KEYCODE_F8, ASCII_F8, 0));

	mapper->addGlobalKeymap(globalMap);

	mapper->pushKeymap("global");
#endif

}

extern "C" int scummvm_main(int argc, const char * const argv[]) {
	Common::String specialDebug;
	Common::String command;

	// Verify that the backend has been initialized (i.e. g_system has been set).
	assert(g_system);
	OSystem &system = *g_system;

	// Register config manager defaults
	Base::registerDefaults();

	// Parse the command line
	Common::StringMap settings;
	command = Base::parseCommandLine(settings, argc, argv);

	// Load the config file (possibly overriden via command line):
	if (settings.contains("config")) {
		ConfMan.loadConfigFile(settings["config"]);
		settings.erase("config");
	} else {
		ConfMan.loadDefaultConfigFile();
	}

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


	// Load and setup the debuglevel and the debug flags. We do this at the
	// soonest possible moment to ensure debug output starts early on, if
	// requested.
	if (settings.contains("debuglevel")) {
		gDebugLevel = (int)strtol(settings["debuglevel"].c_str(), 0, 10);
		printf("Debuglevel (from command line): %d\n", gDebugLevel);
		settings.erase("debuglevel");	// This option should not be passed to ConfMan.
	} else if (ConfMan.hasKey("debuglevel"))
		gDebugLevel = ConfMan.getInt("debuglevel");

	if (settings.contains("debugflags")) {
		specialDebug = settings["debugflags"];
		settings.erase("debugflags");
	}

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

	// Process the remaining command line settings. Must be done after the
	// config file and the plugins have been loaded.
	if (!Base::processSettings(command, settings))
		return 0;

	// Init the backend. Must take place after all config data (including
	// the command line params) was read.
	system.initBackend();

	setupGraphics(system);

	// Init the event manager. As the virtual keyboard is loaded here, it must
	// take place after the backend is initiated and the screen has been setup
	system.getEventManager()->init();

	// Directly after initializing the event manager, we will initialize our
	// event recorder.
	//
	// TODO: This is just to match the current behavior, when we further extend
	// our event recorder, we might do this at another place. Or even change
	// the whole API for that ;-).
	g_eventRec.init();

	// Now as the event manager is created, setup the keymapper
	setupKeymapper(system);

	// Unless a game was specified, show the launcher dialog
	if (0 == ConfMan.getActiveDomain())
		launcherDialog();

	// FIXME: We're now looping the launcher. This, of course, doesn't
	// work as well as it should. In theory everything should be destroyed
	// cleanly, so this is now enabled to encourage people to fix bits :)
	while (0 != ConfMan.getActiveDomain()) {
		// Try to find a plugin which feels responsible for the specified game.
		const EnginePlugin *plugin = detectPlugin();
		if (plugin) {
			// Unload all plugins not needed for this game,
			// to save memory
			PluginManager::instance().unloadPluginsExcept(PLUGIN_TYPE_ENGINE, plugin);

			// Try to run the game
			Common::Error result = runGame(plugin, system, specialDebug);

			// Did an error occur ?
			if (result != Common::kNoError) {
				// TODO: Show an informative error dialog if starting the selected game failed.
			}

			// Quit unless an error occurred, or Return to launcher was requested
			#ifndef FORCE_RTL
			if (result == 0 && !g_system->getEventManager()->shouldRTL())
				break;
			#endif
			// Reset RTL flag in case we want to load another engine
			g_system->getEventManager()->resetRTL();
			#ifdef FORCE_RTL
			g_system->getEventManager()->resetQuit();
			#endif

			// Discard any command line options. It's unlikely that the user
			// wanted to apply them to *all* games ever launched.
			ConfMan.getDomain(Common::ConfigManager::kTransientDomain)->clear();

			// Clear the active config domain
			ConfMan.setActiveDomain("");

			// PluginManager::instance().unloadPlugins();
			PluginManager::instance().loadPlugins();
		} else {
			// A dialog would be nicer, but we don't have any
			// screen to draw on yet.
			warning("Could not find any engine capable of running the selected game");
		}

		// We will destroy the AudioCDManager singleton here to save some memory.
		// This will not make the CD audio stop, one would have to enable this:
		//AudioCD.stop();
		// but the engine is responsible for stopping CD playback anyway and
		// this way we catch engines not doing it properly. For some more
		// information about why AudioCDManager::destroy does not stop the CD
		// playback read the FIXME in sound/audiocd.h
		Audio::AudioCDManager::destroy();

		// reset the graphics to default
		setupGraphics(system);
		launcherDialog();
	}
	PluginManager::instance().unloadPlugins();
	PluginManager::destroy();
	Common::ConfigManager::destroy();
	Common::SearchManager::destroy();
	GUI::GuiManager::destroy();

	return 0;
}