X-Git-Url: https://jxself.org/git/?p=open-adventure.git;a=blobdiff_plain;f=advent.h;h=45b1c0c034256834de840433552860e28d1940e9;hp=98a52d250e4f57376322a1ad7a365383f1e99d84;hb=d522d22c71ce0972efcb8872c851335ca08abaa4;hpb=abf820bb5c8bcf51207ef941dbe00b7c425bf023

diff --git a/advent.h b/advent.h
index 98a52d2..45b1c0c 100644
--- a/advent.h
+++ b/advent.h
@@ -30,6 +30,10 @@
 #define STATE_FOUND	0	  // After discovered, before messed with
 #define STATE_IN_CAVITY	1	  // State value common to all gemstones
 
+/* Special fixed object-state values - integers > 0 are location */
+#define IS_FIXED -1
+#define IS_FREE 0
+
 /* Map a state property value to a negative range, where the object cannot be
  * picked up but the value can be recovered later.  Avoid colliding with -1,
  * which has its own meaning. */