1 files changed, 62 insertions, 0 deletions
diff --git a/engines/glk/archetype/timestamp.h b/engines/glk/archetype/timestamp.h
new file mode 100644
index 0000000000..893ba438ce
--- /dev/null
+++ b/engines/glk/archetype/timestamp.h
@@ -0,0 +1,62 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef ARCHETYPE_TIMESTAMP
+#define ARCHETYPE_TIMESTAMP
+
+#include "common/scummsys.h"
+
+namespace Glk {
+namespace Archetype {
+
+typedef uint32 TimestampType;
+
+extern TimestampType GTimeStamp;
+
+extern void timestamp_init();
+
+/**
+ * Creates a compressed long integer that contains all the necessary time information.
+ * There are enough bits in a 32-bit word to do this :
+ * 
+ * Variable      Range                             Bits
+ * --------      -----                             ----
+ * Year          0-63                                6
+ * Month         1-12                                4
+ * Day           0-31                                5
+ * Hour          0-23                                5
+ * Minute        0-59                                6
+ * Second        0-59                                6
+ * 
+ * Note that Year does not quite fit comfortably into this scheme.The actual returned value
+ * is 1980-2099, a span of 119 years; but we are using only 63.  Year 0 is considered 1992
+ * and the upper limit is 2055 before it goes back to year 0 (1992) again.
+ * 
+ * The DayOfWeek information is thrown away because it is redundant, and the Sec100 information
+ * is thrown away because it is unnecessarily precise
+ */
+extern void get_time_stamp(TimestampType &tstamp);
+
+} // End of namespace Archetype
+} // End of namespace Glk
+
+#endif