Альфа версия (Ранний доступ)

script.js

@@ -14,24 +14,64 @@ var snakeGame = (function () {
     const WIDTH = 10;
     const HEIGHT = 10;
 
+	let score = 0;
     let headX = 0;
     let headY = 0;
     let dx = 1;
     let dy = 0;
     let currentStep = 1;
+	let mainDir = [1,0];
+	let amOfFood = 0;
+	let foodPos = [0,0];
+
+	let teleport = (dir,step) => {
+		if(dir > 9)
+			dir = 0;
+		if(dir < 0)
+			dir = 9;
+		return dir;
+	}
 
     let playStep = () => {
-        headX += dx;
+		mainDir = changeDir();
+		dx = mainDir[0];
+		dy = mainDir[1];
+		headX += dx;
+		headX = teleport(headX);
         headY += dy;
+		headY = teleport(headY);
         let newHeadCell = getCell(headX, headY);
 
         removeSnakeCells();      
         addSnakeToCell(newHeadCell);
         setCellStep(newHeadCell, currentStep);
-
+		if(amOfFood < 1){
+			foodPos[0]=Math.floor(Math.random()*WIDTH);
+			foodPos[1]=Math.floor(Math.random()*HEIGHT);
+			let newFoodCell = getCell(foodPos[0],foodPos[1]);
+			addFoodToCell(newFoodCell);
+			amOfFood++;
+		}
+
+		eating();
+
         currentStep++;
         return true;
     }
+
+	let eating = () => {
+		if((headX == foodPos[0]) && (headY == foodPos[1]))
+		{
+			let foodCell = getCell(foodPos[0],foodPos[1]);
+			removeFoodFromCell(foodCell);
+			amOfFood--;
+			score++;
+		}
+	}
+
+	let removeFoodFromCell = cell => {
+        cell.className = cell.className.replace('food', '');
+    }
 
     let removeSnakeCells = () => {
         for (let snakeCell of getSnakeCells())
@@ -53,6 +93,11 @@ var snakeGame = (function () {
         // Поэтому добавляем пробел.
         cell.className += ' snake';
     }
+
+	let addFoodToCell = cell => {
+		//Добавим еду
+        cell.className += ' food';
+    }
 
     let removeSnakeFromCell = cell => {
         cell.className = cell.className.replace('snake', '');
@@ -70,11 +115,22 @@ var snakeGame = (function () {
 
     // Только этот объект будет доступен извне.
     return {
-        getScore: 0,
+        getScore: score,
         playStep: playStep
     }
 })(); // Используем IIFE (Immediately Invoked Function Expression) для изоляции.
 
+var changeDir = function(){
+	if (down)
+		return [0,1];
+	if (up)
+		return [0,-1];
+	if (left)
+		return [-1,0];
+	if (right)
+		return [1,0];
+}
+
 // Главный цикл игры.
 let timer = setInterval(function () {
     if (!snakeGame.playStep())
@@ -85,10 +141,46 @@ let timer = setInterval(function () {
     }
 }, 500);
 
+var up = false;
+var down = false;
+var left = false;
+var right = true;
+
 // Обработка действий пользователя.
 document.onkeydown = e => {
     switch (e.keyCode)
     {
+		case 38:
+		down = false;
+		up = true;
+		left = false;
+		right = false;
+		break;
+
+		case 40:
+		down = true;
+		up = false;
+		left = false;
+		right = false;
+		break;
+
+		case 37:
+		down = false;
+		up = false;
+		left = true;
+		right = false;
+		break;
+
+		case 39:
+		down = false;
+		up = false;
+		left = false;
+		right = true;
+		break;
+
+		default:
+
+		break;
         // http://keycode.info/
     }
-}
+}