close loophole

data/scenarios/Challenges/Ranching/_pied-piper/rat.sw

@@ -1,18 +1,17 @@
 def moveWithMorbidity =
-    let mold = "mold" in
-    moldHere <- ishere mold;
+    moldHere <- ishere "mold";
     if moldHere {
         try {
             // handle race conditions in which
             // another robot grabs it first
             m <- harvest;
-            if (m == mold) {
-                say $ "Yuck, " ++ mold ++ "! I'm outta here.";
+            let spores = "mold spores" in
+            if (m == spores) {
+                say $ "Yuck, " ++ spores ++ "! I'm outta here.";
                 selfdestruct;
             } {};
         } {};
     } {};
-
     move;
     end;
 
@@ -112,9 +111,4 @@ def go = \startLoc.
     end;
 
 startLoc <- whereami;
-let shouldDestruct = false in
-if shouldDestruct {
-    selfdestruct;
-} {
-    go startLoc;
-}
+go startLoc;

data/scenarios/Challenges/Ranching/_pied-piper/solution.sw

@@ -109,10 +109,10 @@ def getKey =
   move;
   end;
 
-def placeMold =
+def placeMold = \moldItem.
   turn east;
   doN 11 move;
-  sow "mold";
+  sow moldItem;
   end;
 
 def go =
@@ -134,7 +134,7 @@ def go =
   doN 4 move;
   turn left;
   doN 3 move;
-  harvest;
+  moldItem <- grab;
   turn back;
   doN 3 move;
 
@@ -185,7 +185,7 @@ def go =
   makeOatsTrail 4 12;
   placeHorizontalTrail 4;
 
-  placeMold;
+  placeMold moldItem;
   end;
 
 go;

data/scenarios/Challenges/Ranching/pied-piper.yaml

@@ -85,7 +85,7 @@ objectives:
   - teaser: Silo
     id: silo
     goal:
-      - Inspect the `storage silo`{=structure}
+      - Inspect the `storage silo`{=structure}.
     condition: |
       as base {
         loc <- locateme;
@@ -96,16 +96,16 @@ objectives:
     id: moldy
     goal:
       - A `rat`{=robot} will `selfdestruct` if it comes in contact with `mold`{=entity}.
-      - Obtain some `mold`{=entity}.
+      - Obtain some `mold spores`{=entity}.
     condition: |
       as base {
-        has "mold";
+        has "mold spores";
       }
   - teaser: Corral
     prerequisite: moldy
     goal:
       - Dispatch the `rat`{=robot}s with `mold`{=entity}.
-      - Note that `mold`{=entity} will only spread when `sow`n in a dark, damp environment.
+      - Note that `mold spores`{=entity} will only spread when `sow`n in a dark, damp environment.
     condition: |
       try {
         r <- robotNamed "rat";
@@ -207,13 +207,30 @@ entities:
       char: 'm'
     description:
       - Spreads in dark, damp environment
+      - Yields `mold spores`{=entity} when `harvest`ed or `grab`bed.
     properties: [known, pickable, growable]
+    yields: mold spores
     growth:
       duration: [15, 30]
       spread:
         radius: 2
         density: 0.3
     biomes: [clay]
+  - name: mold spores
+    display:
+      attr: mold
+      char: 's'
+    description:
+      - Grows into `mold`{=entity} in dark, damp environments
+    properties: [known, pickable, growable]
+    yields: mold spores
+    growth:
+      duration: [15, 30]
+      mature: mold
+      spread:
+        radius: 2
+        density: 0.3
+    biomes: [clay]
 known: [water, boulder]
 structures:
   - name: storage silo
@@ -308,10 +325,10 @@ subworlds:
         consistent: true
     upperleft: [-1, 1]
     map: |
-      ++xHxxxxx
-      ++x.x+.mx
-      ++x.x+m.x
-      ++x.x++.x
+      ++xHx+xx+
+      ++x.xx.mx
+      ++x.xxm.x
+      ++x.xxx.x
       ++x.....x
       +++x.xxxx
       +++x.x+++