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engines/crab/timer.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/>.
+ *
+ */
+
+/*
+ * This code is based on the CRAB engine
+ *
+ * Copyright (c) Arvind Raja Yadav
+ *
+ * Licensed under MIT
+ *
+ */
+
+//=============================================================================
+// Author:   Arvind
+// Purpose:  Timer functions
+//=============================================================================
+#include "common/system.h"
+#include "crab/loaders.h"
+#include "crab/timer.h"
+
+namespace Crab {
+
+Timer::Timer() {
+	// Initialize the variables
+	_startTicks = 0;
+	_pausedTicks = 0;
+	_targetTicks = 0;
+	_targetValid = false;
+	_paused = false;
+	_started = false;
+}
+
+void Timer::load(rapidxml::xml_node<char> *node, const Common::String &name, const bool &echo) {
+	_targetValid = loadNum(_targetTicks, name, node, echo);
+}
+
+void Timer::start() {
+	// Start the timer
+	_started = true;
+
+	// Resume the timer
+	_paused = false;
+
+	// Get the current clock time
+	_startTicks = g_system->getMillis();
+}
+
+void Timer::stop() {
+	// Stop the timer
+	_started = false;
+
+	// Resume the timer
+	_paused = false;
+}
+
+uint32 Timer::ticks() {
+	// If the timer is running
+	if (_started == true) {
+		// If the timer is paused
+		if (_paused == true) {
+			// Return the number of ticks when the timer was paused
+			return _pausedTicks;
+		} else {
+			// Return the current time minus the start time
+			return g_system->getMillis() - _startTicks;
+		}
+	}
+	// If the timer isn't running
+	return 0;
+}
+
+void Timer::pause() {
+	// If the timer is running and isn't already paused
+	if ((_started == true) && (_paused == false)) {
+		// Pause the timer
+		_paused = true;
+
+		// Calculate the paused ticks
+		_pausedTicks = g_system->getMillis() - _startTicks;
+	}
+}
+
+void Timer::resume() {
+	// If the timer is paused
+	if (_paused == true) {
+		// Resume the timer
+		_paused = false;
+
+		// Reset the starting ticks
+		_startTicks = g_system->getMillis() - _pausedTicks;
+		// Reset the paused ticks
+		_pausedTicks = 0;
+	}
+}
+
+bool Timer::targetReached(const float &factor) {
+	if (!_started)
+		start();
+
+	if (_targetValid && ticks() >= (_targetTicks / factor))
+		return true;
+
+	return false;
+}
+
+} // End of namespace Crab