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engines/saga2/calendar.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/>.
+ *
+ *
+ * Based on the original sources
+ *   Faery Tale II -- The Halls of the Dead
+ *   (c) 1993-1996 The Wyrmkeep Entertainment Co.
+ */
+
+#ifndef SAGA2_CALENDAR_H
+#define SAGA2_CALENDAR_H
+
+namespace Saga2 {
+
+/* ===================================================================== *
+   CalendarTime class
+ * ===================================================================== */
+
+class CalendarTime {
+public:
+	enum {
+		//  Basic constants
+		kDaysPerWeek     = 7,
+		kDaysPerYear     = 365,
+		kHoursPerDay     = 24,
+		kRealMinutesPerDay = 30,
+
+		//  Number of animation frames per day
+		kFramesPerDay    = 10 * 60 * kRealMinutesPerDay,
+
+		//  Derived variables
+		kFramesPerHour   = (kFramesPerDay / kHoursPerDay),
+		kFramesAtNoon    = (kFramesPerDay / 2),
+
+		kDayBias = kFramesAtNoon / 6,
+
+		kGameStartHour = 5
+	};
+
+	uint16      _years,
+	            _weeks,
+	            _days,
+	            _dayInYear,
+	            _dayInWeek,
+	            _hour,
+	            _frameInHour;
+
+	bool _calendarPaused;
+
+	CalendarTime() {
+		_years = _weeks = _days = _dayInYear = _dayInWeek = _hour = _frameInHour = 0;
+		_calendarPaused = false;
+	}
+
+	void read(Common::InSaveFile *in);
+	void write(Common::MemoryWriteStreamDynamic *out);
+
+	void update();
+	int lightLevel(int maxLevel);
+
+	uint16 frameInDay() {
+		return _hour * kFramesPerHour + _frameInHour;
+	}
+};
+
+/* ===================================================================== *
+   FrameAlarm class
+ * ===================================================================== */
+
+class FrameAlarm {
+	uint16      _baseFrame,
+	            _duration;
+public:
+	void set(uint16 dur);
+	bool check();
+	uint16 elapsed();
+
+	void write(Common::MemoryWriteStreamDynamic *out);
+	void read(Common::InSaveFile *in);
+};
+
+/* ===================================================================== *
+   Calendar management functions
+ * ===================================================================== */
+
+void updateCalendar();
+void pauseCalendar();
+void resumeCalendar();
+
+uint32 operator - (const CalendarTime &time1, const CalendarTime &time2);
+
+void initCalendar();
+
+void saveCalendar(Common::OutSaveFile *outS);
+void loadCalendar(Common::InSaveFile *in);
+
+bool isDayTime();
+
+const int MAX_LIGHT = 12;       // maximum light level
+
+}
+
+#endif