robot cardinal direction literals (#1685)

Closes #1679.

Split into two commits:
1. Parser and JSON schema changes
2. Update all scenario files (except `chess_horse.yaml`)

data/scenarios/Challenges/2048.yaml

@@ -157,7 +157,7 @@ recipes:
     - [1, "2048"]
 robots:
   - name: base
-    dir: [1,0]
+    dir: east
     display:
       attr: robot
       char: "Ω"

data/scenarios/Challenges/Mazes/easy_cave_maze.yaml

@@ -21,7 +21,7 @@ solution: |
   }
 robots:
   - name: base
-    dir: [0,1]
+    dir: north
     display:
       char: 'Ω'
       attr: robot

data/scenarios/Challenges/Mazes/easy_spiral_maze.yaml

@@ -22,7 +22,7 @@ solution: |
   }
 robots:
   - name: base
-    dir: [0,1]
+    dir: north
     display:
       char: 'Ω'
       attr: robot

data/scenarios/Challenges/Mazes/invisible_maze.yaml

@@ -29,7 +29,7 @@ solution: |
   }
 robots:
   - name: base
-    dir: [0,1]
+    dir: north
     display:
       char: 'Ω'
       attr: robot

data/scenarios/Challenges/Mazes/loopy_maze.yaml

@@ -21,7 +21,7 @@ solution: |
   run "scenarios/Challenges/Mazes/loopy_maze_sol.sw"
 robots:
   - name: base
-    dir: [0,1]
+    dir: north
     display:
       char: 'Ω'
       attr: robot

data/scenarios/Challenges/Ranching/beekeeping.yaml

@@ -81,7 +81,7 @@ robots:
   - name: base
     display:
       attr: mybase
-    dir: [1, 0]
+    dir: east
     devices:
       - 3D printer
       - blueprint
@@ -113,7 +113,7 @@ robots:
       - [20, iron plate]
       - [4, botkit]
   - name: queenbee
-    dir: [1, 0]
+    dir: east
     system: true
     display:
       invisible: true

data/scenarios/Challenges/Ranching/capture.yaml

@@ -72,7 +72,7 @@ objectives:
       };
 robots:
   - name: base
-    dir: [1, 0]
+    dir: east
     devices:
       - 3D printer
       - branch predictor
@@ -114,7 +114,7 @@ robots:
       - [6, welder]
   - name: opponent
     system: true
-    dir: [0, 1]
+    dir: north
     display:
       char: P
       attr: pig

data/scenarios/Challenges/Ranching/gated-paddock.yaml

@@ -191,7 +191,7 @@ objectives:
     prerequisite: feed_sheep
 robots:
   - name: base
-    dir: [0, 1]
+    dir: north
     devices:
       - treads
       - scanner
@@ -221,7 +221,7 @@ robots:
       invisible: false
       char: '@'
     system: true
-    dir: [0, 1]
+    dir: north
     inventory:
       - [4, wool]
     unwalkable:

data/scenarios/Challenges/Ranching/powerset.yaml

@@ -50,7 +50,7 @@ objectives:
       as r {has "bit (0)"};
 robots:
   - name: base
-    dir: [1, 0]
+    dir: east
     devices:
       - ADT calculator
       - branch predictor
@@ -75,7 +75,7 @@ robots:
       - treads
   - name: setup
     system: true
-    dir: [1, 0]
+    dir: east
     display:
       invisible: true
     inventory:

data/scenarios/Challenges/Sliding Puzzles/3x3.yaml

@@ -31,7 +31,7 @@ objectives:
       as j {run "scenarios/Challenges/Sliding Puzzles/_sliding-puzzle/validate-board.sw"};
 robots:
   - name: base
-    dir: [1, 0]
+    dir: east
     devices:
       - ADT calculator
       - branch predictor
@@ -84,7 +84,7 @@ robots:
       - [25, y-tile-ordinal]
   - name: maintainer
     system: true
-    dir: [1, 0]
+    dir: east
     display:
       invisible: true
       attr: 'gold'
@@ -118,7 +118,7 @@ robots:
       run "scenarios/Challenges/Sliding Puzzles/_sliding-puzzle/maintainer.sw";
   - name: setup
     system: true
-    dir: [1, 0]
+    dir: east
     display:
       invisible: true
       attr: 'iron'

data/scenarios/Challenges/Sokoban/Gadgets/no-reverse.yaml

@@ -14,7 +14,7 @@ objectives:
       };
 robots:
   - name: base
-    dir: [0, -1]
+    dir: south
     display:
       attr: gold
     devices:

data/scenarios/Challenges/Sokoban/Gadgets/one-way.yaml

@@ -14,7 +14,7 @@ objectives:
       };
 robots:
   - name: base
-    dir: [1, 0]
+    dir: east
     display:
       attr: gold
     devices:

data/scenarios/Challenges/Sokoban/Simple/trapdoor.yaml

@@ -21,7 +21,7 @@ objectives:
       };
 robots:
   - name: base
-    dir: [1, 0]
+    dir: east
     display:
       attr: gold
     devices:

data/scenarios/Challenges/Sokoban/foresight.yaml

@@ -32,7 +32,7 @@ robots:
   - name: base
     display:
       attr: bluish
-    dir: [0, 1]
+    dir: north
     devices:
       - branch predictor
       - ADT calculator

data/scenarios/Challenges/arbitrage.yaml

@@ -57,7 +57,7 @@ attrs:
     bg: '#000000'
 robots:
   - name: base
-    dir: [1, 0]
+    dir: east
     devices:
       - ADT calculator
       - antenna

data/scenarios/Challenges/blender.yaml

@@ -63,7 +63,7 @@ objectives:
       anyHasMetBase 1;
 robots:
   - name: base
-    dir: [1, 0]
+    dir: east
     devices:
       - ADT calculator
       - binoculars
@@ -87,7 +87,7 @@ robots:
       - welder
   - name: cw_robot
     system: true
-    dir: [0, 1]
+    dir: north
     display:
       invisible: false
       char: 'X'
@@ -96,7 +96,7 @@ robots:
       run "scenarios/Challenges/_blender/patrol-clockwise.sw"
   - name: cw_robot_down
     system: true
-    dir: [0, -1]
+    dir: south
     display:
       invisible: false
       char: 'X'
@@ -105,7 +105,7 @@ robots:
       run "scenarios/Challenges/_blender/patrol-clockwise.sw"
   - name: ccw_robot
     system: true
-    dir: [0, 1]
+    dir: north
     display:
       invisible: false
       char: 'X'
@@ -114,7 +114,7 @@ robots:
       run "scenarios/Challenges/_blender/patrol-counter-clockwise.sw"
   - name: ccw_robot_down
     system: true
-    dir: [0, -1]
+    dir: south
     display:
       invisible: false
       char: 'X'

data/scenarios/Challenges/bridge-building.yaml

@@ -145,7 +145,7 @@ objectives:
       };
 robots:
   - name: base
-    dir: [1, 0]
+    dir: east
     devices:
       - ADT calculator
       - branch predictor
@@ -181,7 +181,7 @@ robots:
       - [0, jungle]
   - name: flowercheck
     system: true
-    dir: [0, 1]
+    dir: north
     display:
       invisible: true
     devices:
@@ -192,7 +192,7 @@ robots:
       run "scenarios/Challenges/_bridge-building/flower-ring-check.sw"
   - name: platecheck
     system: true
-    dir: [0, 1]
+    dir: north
     display:
       invisible: true
 solution: |

data/scenarios/Challenges/bucket-brigade.yaml

@@ -10,7 +10,7 @@ robots:
       char: 'Ω'
       attr: robot
     heavy: true
-    dir: [0, 1]
+    dir: north
     devices:
       - 3D printer
       - ADT calculator
@@ -35,7 +35,7 @@ robots:
       - [1, treads]
   - name: hauler
     system: true
-    dir: [-1, 0]
+    dir: west
     devices:
       - furnace
     display:
@@ -46,7 +46,7 @@ robots:
       run "scenarios/Challenges/_bucket-brigade/hauler.sw"
   - name: powerplant
     system: true
-    dir: [1, 0]
+    dir: east
     display:
       invisible: false
       char: '▒'

data/scenarios/Challenges/combo-lock.yaml

@@ -22,7 +22,7 @@ objectives:
       as base {has "bitcoin"};
 robots:
   - name: base
-    dir: [1, 0]
+    dir: east
     display:
       invisible: false
     devices:
@@ -44,7 +44,7 @@ robots:
       - treads
   - name: lockbot
     system: true
-    dir: [1, 0]
+    dir: east
     display:
       invisible: true
     program: |

data/scenarios/Challenges/friend.yaml

@@ -10,7 +10,7 @@ robots:
       char: 'Ω'
       attr: robot
     heavy: true
-    dir: [0, 1]
+    dir: north
     devices:
       - 3D printer
       - ADT calculator
@@ -47,7 +47,7 @@ robots:
       - [10, calculator]
   - name: cat
     system: true
-    dir: [-1, 0]
+    dir: west
     display:
       invisible: false
       char: 'c'

data/scenarios/Challenges/gopher.yaml

@@ -41,7 +41,7 @@ robots:
     loc: [-1, 1]
     display:
       attr: blue
-    dir: [1, 0]
+    dir: east
     devices:
       - ADT calculator
       - 3D printer
@@ -77,7 +77,7 @@ robots:
       - [120, flower]
   - name: gopher
     system: true
-    dir: [0, 1]
+    dir: north
     display:
       char: 'G'
       invisible: false