セーブファイルバージョンについて、コメント付加。

diff --git a/src/defines.h b/src/defines.h
index 36c0631..4814d04 100644 (file)
--- a/src/defines.h
+++ b/src/defines.h
@@ -45,18 +45,40 @@
  */
 #define VERSION_NAME "Hengband"
 
-/* Savefile version for Hengband 1.1.1 and later */
-#define H_VER_MAJOR 1
-#define H_VER_MINOR 5
-#define H_VER_PATCH 4
-#define H_VER_EXTRA 1
 
-/* Added for ZAngband */
+/*
+ * "Program Version Number" of the game
+ *
+ * FAKE_VER_MAJOR=1,2 were reserved for ZAngband version 1.x.x/2.x.x .
+ *
+ * Program Version of Hengband version is
+ *   "(FAKE_VER_MAJOR-10).(FAKE_VER_MINOR).(FAKE_VER_PATCH)".
+ */
 #define FAKE_VERSION   0
 #define FAKE_VER_MAJOR 11
 #define FAKE_VER_MINOR 5
 #define FAKE_VER_PATCH 4
 
+
+/*
+ * "Savefile Version Number" for Hengband 1.1.1 and later
+ *
+ * First three digits may be same as the Program Version.  But not
+ * always same.  It means that newer version may preserves lower
+ * compatibility with the older version.
+ *
+ * For example, newer Hengband 1.4.4 creates savefiles marked with
+ * Savefile Version 1.4.0.0 .  It means that Hengband 1.4.0 can load a
+ * savefile of Hengband 1.4.4 (lower compatibility!).
+ *
+ * Upper compatibility is always guaranteed.
+ */
+#define H_VER_MAJOR 1
+#define H_VER_MINOR 5
+#define H_VER_PATCH 4
+#define H_VER_EXTRA 1
+
+
 #define ANGBAND_2_8_1
 #define ZANGBAND