improve scenario

data/scenarios/Testing/1598-detect-entity-change.yaml

@@ -4,6 +4,13 @@ author: Karl Ostmo
 description: |
   Ensure that a change to an entity can be observed
   by a system robot within a single tick.
+
+  In this scenario, the base will first `swap` the
+  existing `dial (R)`{=entity} with a `dial (G)`{=entity},
+  then immediately `swap` again with a `dial (B)`{=entity}.
+  
+  The system robot should be able to detect the presence
+  of the `dial (G)`{=entity} before it is `swap`ped a second time.
 creative: true
 seed: 0
 objectives:
@@ -47,7 +54,7 @@ robots:
     inventory:
       - [1, flower]
 solution: |
-  wait 8;
+  wait 2;
   move;
   move;
   swap "dial (G)";

data/scenarios/Testing/1598-watch-wait-instant.yaml

@@ -0,0 +1,62 @@
+version: 1
+name: Watch and Wait with Instant
+author: Karl Ostmo
+description: |
+  Ensure that the `watch` command does
+  not introduce a tick delay.
+creative: false
+seed: 0
+objectives:
+  - teaser: Has item
+    goal:
+      - |
+        Observe item
+    condition: |
+      r <- robotnamed "watchbot";
+      as r {ishere "rock"};
+      //as r {return false};
+robots:
+  - name: base
+    dir: [1, 0]
+    devices:
+      - hourglass
+      - fast grabber
+      - logger
+      - treads
+    inventory:
+      - [1, flower]
+      - [1, tree]
+      - [1, rock]
+  - name: watchbot
+    system: true
+    display:
+      invisible: false
+    dir: [1, 0]
+    program: |
+      def watchAndWait =
+        watch down;
+        wait 1000;
+        watchAndWait;
+        end;
+
+      instant watchAndWait;
+
+    inventory:
+      - [1, flower]
+solution: |
+  move; move; 
+  swap "flower";
+  swap "tree";
+  swap "rock";
+known: [gold]
+world:
+  dsl: |
+    {blank}
+  upperleft: [-1, -1]
+  offset: false
+  palette:
+    '.': [grass, erase]
+    'B': [grass, erase, base]
+    'c': [grass, gold, watchbot]
+  map: |
+    B.c