Another update from ingydotnet^djgoku

Task/Conways-Game-of-Life/JavaScript/conways-game-of-life-3.js

@@ -0,0 +1,41 @@
+const _ = require('lodash');
+
+///////////////////
+// LODASH IMPORT //
+///////////////////
+
+// import all lodash functions to the main namespace, but isNaN not to cause conflicts
+_.each(_.keys(_), k => global[k === 'isNaN' ? '_isNaN' : k] = _[k]);
+
+///////////////
+// FUNCTIONS //
+///////////////
+const WORLD_WIDTH  = 3,
+      WORLD_HEIGHT = 3,
+      displayWorld = (world) => console.log(map(world, x => x.join(' ')).join('\n') + '\n'),
+
+      aliveNeighbours = (world, x, y) => chain(range(-1, 2))
+                                          .reduce((acc, i) => acc.concat(map(range(-1, 2), ii => [i, ii])), [])
+                                          .reject(partial(isEqual, [0, 0]))
+                                          .map(i => {
+                                            try {
+                                              return world[x + i[0]][y + i[1]];
+                                            } catch (err) {
+                                              return null;
+                                            }
+                                          })
+                                          .compact()
+                                          .value()
+                                          .length,
+
+      isAlive = (cell, numAliveNeighbours) => (cell === 1 && inRange(numAliveNeighbours, 2, 4)) || (cell === 0 && numAliveNeighbours === 3) ? 1 : 0,
+      updateWorld = (world) => map(world, (row, rowidx) => map(row, (cell, colidx) => isAlive(cell, aliveNeighbours(world, rowidx, colidx))));
+
+
+// let world = map(range(WORLD_WIDTH), partial(ary(map, 2), range(WORLD_HEIGHT), partial(random, 0, 1, false)));
+let world = [[0, 0, 0], [1, 1, 1], [0, 0, 0]];
+
+setInterval(() => {
+  world = updateWorld(world)
+  displayWorld(world);
+}, 1000);