State-arithmetic elimination.

actions.c

@@ -1052,9 +1052,8 @@ static int reservoir(void)
         rspeak(NOTHING_HAPPENS);
         return GO_CLEAROBJ;
     } else {
-        /* FIXME: Arithmetic on state numbers */
+	state_change(RESER,
-        pspeak(RESER, look, game.prop[RESER] + 1, true);
+		     game.prop[RESER] == WATERS_PARTED ? WATERS_UNPARTED : WATERS_PARTED);
-        game.prop[RESER] = 1 - game.prop[RESER];
         if (AT(RESER))
             return GO_CLEAROBJ;
         else {

adventure.yaml

@@ -3627,11 +3627,13 @@ objects: !!omap
     inventory: '*reservoir'
     locations: [LOC_RESERVOIR, LOC_RESNORTH]
     immovable: true
-    states: [WATERS_UNPARTED, WATERS_PARTED, WATERS_CRASH]
+    states: [WATERS_UNPARTED, WATERS_PARTED]
     descriptions:
     - ''
     - 'The waters have parted to form a narrow path across the reservoir.'
+    changes:
     - 'The waters crash together again.'
+    - 'The waters have parted to form a narrow path across the reservoir.'
 - OBJ_46:
     words: ['appen', 'lepor']
     inventory: 'Leporine appendage'

notes.adoc

@@ -47,7 +47,7 @@ Bug fixes:
 * Reading the relocated Witt's End sign in the endgame didn't work right.
 
 * Behavior when saying the giant's magic words outside his room wasn't
-  quite corrected - the game responded as though the player were in
+  quite correct - the game responded as though the player were in
   the room.
  
 * Attempting to extinguish an unlit urn caused it to lose its oil.