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engines/mohawk/myst_stacks/demo.cpp

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+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mohawk/cursors.h"
+#include "mohawk/myst.h"
+#include "mohawk/myst_graphics.h"
+#include "mohawk/myst_stacks/demo.h"
+
+#include "common/system.h"
+
+namespace Mohawk {
+namespace MystStacks {
+
+Demo::Demo(MohawkEngine_Myst *vm) :
+		Intro(vm, kDemoStack),
+		_returnToMenuRunning(false),
+		_returnToMenuStep(0),
+		_returnToMenuNextTime(0) {
+	setupOpcodes();
+}
+
+Demo::~Demo() {
+}
+
+void Demo::setupOpcodes() {
+	// "Stack-Specific" Opcodes
+	OVERRIDE_OPCODE(100, Demo, o_stopIntro);
+	REGISTER_OPCODE(101, Demo, o_fadeFromBlack);
+	REGISTER_OPCODE(102, Demo, o_fadeToBlack);
+
+	// "Init" Opcodes
+	OVERRIDE_OPCODE(201, Demo, o_returnToMenu_init);
+}
+
+void Demo::disablePersistentScripts() {
+	Intro::disablePersistentScripts();
+
+	_returnToMenuRunning = false;
+}
+
+void Demo::runPersistentScripts() {
+	Intro::runPersistentScripts();
+
+	if (_returnToMenuRunning) {
+		returnToMenu_run();
+	}
+}
+
+void Demo::o_stopIntro(uint16 var, const ArgumentsArray &args) {
+	// The original also seems to stop the movies. Not needed with this engine.
+	_vm->_gfx->fadeToBlack();
+}
+
+void Demo::o_fadeFromBlack(uint16 var, const ArgumentsArray &args) {
+	// FIXME: This glitches when enabled. The backbuffer is drawn to screen,
+	// and then the fading occurs, causing the background to appear for one frame.
+	// _vm->_gfx->fadeFromBlack();
+}
+
+void Demo::o_fadeToBlack(uint16 var, const ArgumentsArray &args) {
+	_vm->_gfx->fadeToBlack();
+}
+
+void Demo::returnToMenu_run() {
+	uint32 time = _vm->getTotalPlayTime();
+
+	if (time < _returnToMenuNextTime)
+		return;
+
+	switch (_returnToMenuStep) {
+	case 0:
+		_vm->_gfx->fadeToBlack();
+		_vm->changeToCard(2003, kNoTransition);
+		_vm->_gfx->fadeFromBlack();
+
+		_returnToMenuStep++;
+		break;
+	case 1:
+		_vm->_gfx->fadeToBlack();
+		_vm->changeToCard(2001, kNoTransition);
+		_vm->_gfx->fadeFromBlack();
+		_vm->_cursor->showCursor();
+
+		_returnToMenuStep++;
+		break;
+	default:
+		break;
+	}
+}
+
+void Demo::o_returnToMenu_init(uint16 var, const ArgumentsArray &args) {
+	// Used on Card 2001, 2002 and 2003
+	_returnToMenuNextTime = _vm->getTotalPlayTime() + 5000;
+	_returnToMenuRunning = true;
+}
+
+} // End of namespace MystStacks
+} // End of namespace Mohawk