Langton's ant: Difference between revisions

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@@ Line 1,750: / Line 1,750: @@
 const west = 2
 const south = 3
 const leftTurns  = [ west, north, south, east ]
 const rightTurns = [ east, south, north, west ]
 func move(ant) {
-    ant.position.x += xInc[ant.direction]
+    ant:position:x += xInc[ant:direction]
-    ant.position.y += yInc[ant.direction]
+    ant:position:y += yInc[ant:direction]
 }
 func Array.step(ant) {
-    var ptCur = (x: ant.position.x + ant.origin.x, y: ant.position.y + ant.origin.y)
+    var ptCur = (x = ant:position:x + ant:origin:x, y = ant:position:y + ant:origin:y)
-    var leftTurn = this[ptCur.x][ptCur.y]
+    var leftTurn = this[ptCur:x][ptCur:y]
     ant.direction =
         if leftTurn  {
-            leftTurns[ant.direction]
+            leftTurns[ant:direction]
         } else {
-            rightTurns[ant.direction]
+            rightTurns[ant:direction]
         }
-    this[ptCur.x][ptCur.y] = !this[ptCur.x][ptCur.y]
+    this[ptCur:x][ptCur:y] = !this[ptCur:x][ptCur:y]
     move(ant)
-    ptCur = (x: ant.position.x + ant.origin.x, y: ant.position.y + ant.origin.y)
+    ptCur = (x = ant:position:x + ant:origin:x, y = ant:position:y + ant:origin:y)
-    ant.outOfBounds =
+    ant:outOfBounds =
-        ptCur.x < 0 ||
+        ptCur:x < 0 ||
-        ptCur.x >= ant.width ||
+        ptCur:x >= ant:width ||
-        ptCur.y < 0 ||
+        ptCur:y < 0 ||
-        ptCur.y >= ant.height
+        ptCur:y >= ant:height
-    ant.position
+    ant:position
 }
 func newAnt(width, height) {
     (
-        position: (x: 0, y: 0),
+        position = (x = 0, y = 0),
-        origin: (x: width / 2, y: height / 2),
+        origin = (x = width / 2, y = height / 2),
-        outOfBounds: false,
+        outOfBounds = false,
-        isBlack: [],
+        isBlack = [],
-        direction: east,
+        direction = east,
-        width: width,
+        width = width,
-        height: height
+        height = height
     )
 }
 func run() {
     const w = 100
@@ Line 1,796: / Line 1,796: @@
     const blacks = Array.empty(w, () => Array.empty(h, false))
     const ant = newAnt(w, h)
-    while !ant.outOfBounds {
+    while !ant:outOfBounds {
         blacks.step(ant)
     }
     var iRow = 0;
     while iRow < w {
         var iCol = 0;
@@ Line 1,818: / Line 1,818: @@
     }
 }
 run()</lang>