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engines/kyra/engine/timer.h

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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/>.
+ *
+ */
+
+#ifndef KYRA_TIMER_H
+#define KYRA_TIMER_H
+
+#include "kyra/kyra_v1.h"
+
+#include "common/list.h"
+#include "common/stream.h"
+#include "common/func.h"
+
+namespace Kyra {
+
+typedef Common::Functor1<int, void> TimerFunc;
+
+struct TimerEntry {
+	uint8 id;
+	int32 countdown;
+	int8 enabled;
+
+	int32 lastUpdate;
+	uint32 nextRun;
+
+	TimerFunc *func;
+
+	uint32 pauseStartTime;
+};
+
+class TimerManager {
+public:
+	TimerManager(KyraEngine_v1 *vm, OSystem *sys) : _vm(vm), _system(sys), _timers(), _nextRun(0), _isPaused(0), _pauseStart(0) {}
+	~TimerManager() { reset(); }
+
+	void pause(bool p);
+
+	void reset();
+
+	void addTimer(uint8 id, TimerFunc *func, int countdown, bool enabled);
+
+	int count() const { return _timers.size(); }
+
+	void update();
+
+	void resetNextRun();
+
+	void setCountdown(uint8 id, int32 countdown);
+	void setDelay(uint8 id, int32 countdown);
+	int32 getDelay(uint8 id) const;
+	void setNextRun(uint8 id, uint32 nextRun);
+	uint32 getNextRun(uint8 id) const;
+
+	void pauseSingleTimer(uint8 id, bool p);
+
+	bool isEnabled(uint8 id) const;
+	void enable(uint8 id);
+	void disable(uint8 id);
+
+	void loadDataFromFile(Common::SeekableReadStream &file, int version);
+	void saveDataToFile(Common::WriteStream &file) const;
+
+private:
+	void resync();
+
+	KyraEngine_v1 *_vm;
+	OSystem *_system;
+	Common::List<TimerEntry> _timers;
+	uint32 _nextRun;
+
+	uint _isPaused;
+	uint32 _pauseStart;
+
+	typedef Common::List<TimerEntry>::iterator Iterator;
+	typedef Common::List<TimerEntry>::const_iterator CIterator;
+};
+
+class PauseTimer {
+public:
+	PauseTimer(TimerManager &timer) : _timer(timer) { _timer.pause(true); }
+	~PauseTimer() { _timer.pause(false); }
+private:
+	TimerManager &_timer;
+};
+
+} // End of namespace Kyra
+
+#endif