GUI: Add per-engine and per-game options

1 files changed, 51 insertions, 8 deletions

diff --git a/gui/launcher.cpp b/gui/launcher.cpp
index a3e4925848..1670c2da88 100644
--- a/gui/launcher.cpp
+++ b/gui/launcher.cpp
@@ -145,11 +145,28 @@ protected:
 	CheckboxWidget *_globalMIDIOverride;
 	CheckboxWidget *_globalMT32Override;
 	CheckboxWidget *_globalVolumeOverride;
+
+	ExtraGuiOptions _engineOptions;
 };
 
 EditGameDialog::EditGameDialog(const String &domain, const String &desc)
 	: OptionsDialog(domain, "GameOptions") {
-
+	// Retrieve all game specific options.
+	const EnginePlugin *plugin = 0;
+	// To allow for game domains without a gameid.
+	// TODO: Is it intentional that this is still supported?
+	String gameId(ConfMan.get("gameid", domain));
+	if (gameId.empty())
+		gameId = domain;
+	// Retrieve the plugin, since we need to access the engine's MetaEngine
+	// implementation.
+	EngineMan.findGame(gameId, &plugin);
+	if (plugin) {
+		_engineOptions = (*plugin)->getExtraGuiOptions(domain);
+	} else {
+		warning("Plugin for target \"%s\" not found! Game specific settings might be missing", domain.c_str());
+	}
+	
 	// GAME: Path to game data (r/o), extra data (r/o), and save data (r/w)
 	String gamePath(ConfMan.get("path", _domain));
 	String extraPath(ConfMan.get("extrapath", _domain));
@@ -208,7 +225,16 @@ EditGameDialog::EditGameDialog(const String &domain, const String &desc)
 	}
 
 	//
-	// 2) The graphics tab
+	// 2) The engine tab (shown only if there are custom engine options)
+	//
+	if (_engineOptions.size() > 0) {
+		tab->addTab(_("Engine"));
+
+		addEngineControls(tab, "GameOptions_Engine.", _engineOptions);
+	}
+
+	//
+	// 3) The graphics tab
 	//
 	_graphicsTabId = tab->addTab(g_system->getOverlayWidth() > 320 ? _("Graphics") : _("GFX"));
 
@@ -220,7 +246,7 @@ EditGameDialog::EditGameDialog(const String &domain, const String &desc)
 	addGraphicControls(tab, "GameOptions_Graphics.");
 
 	//
-	// 3) The audio tab
+	// 4) The audio tab
 	//
 	tab->addTab(_("Audio"));
 
@@ -233,7 +259,7 @@ EditGameDialog::EditGameDialog(const String &domain, const String &desc)
 	addSubtitleControls(tab, "GameOptions_Audio.");
 
 	//
-	// 4) The volume tab
+	// 5) The volume tab
 	//
 	if (g_system->getOverlayWidth() > 320)
 		tab->addTab(_("Volume"));
@@ -248,7 +274,7 @@ EditGameDialog::EditGameDialog(const String &domain, const String &desc)
 	addVolumeControls(tab, "GameOptions_Volume.");
 
 	//
-	// 5) The MIDI tab
+	// 6) The MIDI tab
 	//
 	if (!_guioptions.contains(GUIO_NOMIDI)) {
 		tab->addTab(_("MIDI"));
@@ -262,7 +288,7 @@ EditGameDialog::EditGameDialog(const String &domain, const String &desc)
 	}
 
 	//
-	// 6) The MT-32 tab
+	// 7) The MT-32 tab
 	//
 	if (!_guioptions.contains(GUIO_NOMIDI)) {
 		tab->addTab(_("MT-32"));
@@ -276,7 +302,7 @@ EditGameDialog::EditGameDialog(const String &domain, const String &desc)
 	}
 
 	//
-	// 7) The Paths tab
+	// 8) The Paths tab
 	//
 	if (g_system->getOverlayWidth() > 320)
 		tab->addTab(_("Paths"));
@@ -311,7 +337,6 @@ EditGameDialog::EditGameDialog(const String &domain, const String &desc)
 
 	_savePathClearButton = addClearButton(tab, "GameOptions_Paths.SavePathClearButton", kCmdSavePathClear);
 
-
 	// Activate the first tab
 	tab->setActiveTab(0);
 	_tabWidget = tab;
@@ -386,6 +411,19 @@ void EditGameDialog::open() {
 		_langPopUp->setEnabled(false);
 	}
 
+	// Set the state of engine-specific checkboxes
+	for (uint j = 0; j < _engineOptions.size(); ++j) {
+		// The default values for engine-specific checkboxes are not set when
+		// ScummVM starts, as this would require us to load and poll all of the
+		// engine plugins on startup. Thus, we set the state of each custom
+		// option checkbox to what is specified by the engine plugin, and
+		// update it only if a value has been set in the configuration of the
+		// currently selected game.
+		bool isChecked = _engineOptions[j].defaultState;
+		if (ConfMan.hasKey(_engineOptions[j].configOption, _domain))
+			isChecked = ConfMan.getBool(_engineOptions[j].configOption, _domain);
+		_engineCheckboxes[j]->setState(isChecked);
+	}
 
 	const Common::PlatformDescription *p = Common::g_platforms;
 	const Common::Platform platform = Common::parsePlatform(ConfMan.get("platform", _domain));
@@ -429,6 +467,11 @@ void EditGameDialog::close() {
 			ConfMan.removeKey("platform", _domain);
 		else
 			ConfMan.set("platform", Common::getPlatformCode(platform), _domain);
+
+		// Set the state of engine-specific checkboxes
+		for (uint i = 0; i < _engineOptions.size(); i++) {
+			ConfMan.setBool(_engineOptions[i].configOption, _engineCheckboxes[i]->getState(), _domain);
+		}
 	}
 	OptionsDialog::close();
 }