preset for 1D CA initial state

src/modules/automata.js

@@ -99,17 +99,26 @@ function getDrawingValues(state, acc, cell) {
   );
 }
 
+// Populates the first state with a single living cell in the center
+function create1dStateOneCell(width) {
+  return [...Array(width)].map(
+    (cell, index) => {
+      if (index === width / 2 || index === width + 1 / 2) return 1
+      return 0
+    })
+}
+
 // Populates the first state of a 1D CA with cells returned
 // by initFn
-function initialState1d(width, initFn, args) {
+function create1dState(width, initFn, args) {
   return [...Array(width)].map(
-    () => initFn(...args),
+    () => initFn(...args)
   );
 }
 
 // Populates the first state of a 2D CA with cells returned
 // by initFn
-function initialState2d(width, height, initFn, args) {
+function create2dState(width, height, initFn, args) {
   return [...Array(height)].map(
     () => [...Array(width)].map(
       () => initFn(...args),
@@ -118,5 +127,5 @@ function initialState2d(width, height, initFn, args) {
 }
 
 export {
-  getDrawingValues, initialState1d, initialState2d, evolve1d, evolve2d, conwayRules, createBoard,
+  getDrawingValues, create1dState, create2dState, createBoard, create1dStateOneCell, conwayRules, evolve1d, evolve2d
 };