add controls for clearing canvas and resetting to initial seed

src/components/Cell.js

@@ -43,6 +43,9 @@ class CellStream extends Stream {
   setLiving() {
     this.head.setLiving();
   }
+  toggleLiving() {
+    this.head.toggleLiving();
+  }
 }
 
 const cellStream = (living = false, liveNeighbors = 0) => {

src/components/Controls.js

@@ -7,6 +7,9 @@ const init = (gameField) => {
   const rateEl = document.getElementById("rate");
   const forwardEl = document.getElementById("forward");
   const playEl = document.getElementById("play");
+  const resetEl = document.getElementById("reset");
+  const clearEl = document.getElementById("clear");
+  const canvasEl = document.getElementById("game-field");
   const controls = {
     interval: null,
     play() {
@@ -19,14 +22,20 @@ const init = (gameField) => {
         this.interval = null;
       }
     },
+    clear() {
+      gameField = gameField.clear();
+    },
     reset() {
       this.pause();
-      gameField.reset();
+      gameField = gameField.reset();
     },
     forward() {
       gameField.advance();
     },
     rate: 10,
+    updateField(x, y) {
+      gameField = gameField.toggleCell(x, y);
+    },
     updateRate(rate) {
       console.log("updating rate");
       console.log(rate);
@@ -55,6 +64,20 @@ const init = (gameField) => {
     controls.play();
     forwardEl.disabled = true;
   });
+  resetEl.addEventListener("click", (e) => {
+    e.preventDefault();
+    controls.reset();
+  });
+  clearEl.addEventListener("click", (e) => {
+    e.preventDefault();
+    controls.clear();
+  });
+  canvasEl.addEventListener("click", (e) => {
+    e.preventDefault();
+    if (controls.interval) return;
+    const { offsetX, offsetY } = e;
+    controls.updateField(offsetX, offsetY);
+  });
   return controls;
 };
 

src/components/GameFieldTable.js

@@ -5,44 +5,70 @@ const canvasEl = document.getElementById("game-field");
 const canvas2D = canvasEl.getContext("2d");
 canvas2D.fillStyle = "white";
 
-const parseSeed = (seed) => ({
+const parseSeed = (seed) => {
+  if (seed && Array.isArray(seed)) {
+    return {
       fieldArray: [
         [0, 1, 0],
         [0, 0, 1],
         [1, 1, 1],
       ],
-});
+    };
+  }
+  return seed;
+};
 
 const fieldView = (seed) => {
-  fieldArray = parseSeed(seed);
+  console.log(seed);
+  seed = parseSeed(seed);
   // generateTable(true);
-  const field = fieldStream(fieldArray);
+  console.log(seed);
-  return {
+  const field = fieldStream(seed);
+  const view = {
     draw(x, y) {
       const { scale, offset } = this.dimension;
       canvas2D.fillRect(x * scale + offset, y * scale + offset, scale, scale);
     },
     dimension: { x0: 0, y0: 0, x1: 500, y1: 300, scale: 6, offset: 100 },
     field,
-    updateView(field) {
+    updateView() {
       canvas2D.clearRect(0, 0, this.dimension.x1, this.dimension.y1);
-      Object.entries(field.map)
+      Object.entries(this.field.map)
         .filter(([key, cell]) => cell.living)
         .map(([key]) => key.split(","))
         .forEach(([x, y]) => this.draw(x, y));
     },
+    clear() {
+      return fieldView({});
+    },
     reset() {
-      return fieldView(seed);
+      const newField = fieldView(seed);
-      this.updateView(this.field);
+      newField.updateView();
+      return newField;
     },
     advance() {
       this.field = this.field.next.next;
-      this.updateView(this.field);
+      this.updateView();
     },
-    handleClick(e) {
+    toggleCell(x, y) {
-      // toggle single cell
+      const { scale, offset } = this.dimension;
+      x = Math.floor((x - offset) / scale);
+      y = Math.floor((y - offset) / scale);
+      console.log(x, y);
+      const fieldMap = Object.entries(this.field.map)
+        .map(([key, cell]) => [key, cell.living])
+        .reduce((map, [key, living]) => {
+          map[key] = [living];
+          return map;
+        }, {});
+      fieldMap[`${x},${y}`] = !!fieldMap[`${x},${y}`]
+        ? [!fieldMap[`${x},${y}`][0]]
+        : [true];
+      return new fieldView({ fieldMap });
     },
   };
+  view.updateView();
+  return view;
 };
 
 module.exports = {

src/components/controls.html

@@ -1,11 +1,11 @@
 <div class="playControls">
-  <button id="stop">⏹️</button>
+  <button id="clear">⏹️</button>
+  <button id="reset">🔄️</button>
   <button id="play">⏯️</button>
   <button id="forward">⏩️</button>
   <input
     type="range"
     id="rate"
-    onchange="controls.updateRoute"
     min="1"
     max="20"
     value="10"

src/index.js

@@ -4,7 +4,7 @@ import css from "./styles/style.css";
 const { fieldView } = require("./components/GameFieldTable");
 const { init } = require("./components/Controls");
 (() => console.log("hello world!"))();
-window.game = fieldView();
+window.game = fieldView([]);
 window.controls = init(game);
 // controls
 // -- state=idle ?

src/styles/contols.css

@@ -24,9 +24,9 @@ div.playControls {
   border-radius: 1vh;
   border: solid white .5vh;
   grid-template-rows: 2fr 1fr;
-  grid-template-columns: 1fr 1fr 1fr;
+  grid-template-columns: 1fr 1fr 1fr 1fr;
   gap: 1vh;
-  grid-template-areas: "buttons buttons buttons" " slider slider slider";
+  grid-template-areas: "buttons buttons buttons buttons" "slider slider slider slider";
   padding: 1vh;
 }