+#if 1
+ if (game.gravity && !player->is_auto_moving &&
+ canFallDown(player) && move_direction != MV_DOWN &&
+ !canMoveToValidFieldWithGravity(jx, jy, move_direction))
+ return MF_NO_ACTION; /* player cannot walk here due to gravity */
+#endif
+
+#if 0
+ if (element == EL_EMPTY_SPACE &&
+ game.gravity && !player->is_auto_moving &&
+ canFallDown(player) && move_direction != MV_DOWN)
+ return MF_NO_ACTION; /* player cannot walk here due to gravity */
+#endif
+