added comment

diff --git a/src/game_sp/main.c b/src/game_sp/main.c
index 92fc9120dcee90e756c0f12b3f20054e81dcc795..3373d46085fe9ddee101e4737914f95f34b39501 100644 (file)
--- a/src/game_sp/main.c
+++ b/src/game_sp/main.c
@@ -92,5 +92,8 @@ void GameActions_SP(byte action[MAX_PLAYERS], boolean warp_mode)
 
 int getRedDiskReleaseFlag_SP()
 {
+  /* 0: when Murphy is moving (including the destination tile!) */
+  /* 1: when Murphy is not moving for at least one game frame */
+
   return RedDiskReleaseFlag;
 }