Added my snake.

.gitignore

@@ -0,0 +1 @@
+.idea

snake.html

@@ -17,8 +17,8 @@
 			}
 
 			.tile {
-				width: calc(100vmin/10);
-				height: calc(100vmin/10);
+				width: calc(100vmin/30);
+				height: calc(100vmin/30);
 				border: 1px solid black;
 				box-sizing: border-box;
 			}
@@ -37,11 +37,14 @@
 		</style>
 
 		<script>
+			const fieldSize = 30;
+
 			document.addEventListener("DOMContentLoaded", () => {
 				const game = document.getElementById("game");
 				const tileTemplate = document.getElementById("tile-template");
-				for (let x = 0; x < 10; x++) {
-					for (let y = 0; y < 10; y++) {
+
+				for (let x = 0; x < fieldSize; x++) {
+					for (let y = 0; y < fieldSize; y++) {
 						const tile = tileTemplate.content.cloneNode(true);
 						tile.querySelector(".tile").classList.add(y + "-" + x);
 						game.appendChild(tile);
@@ -84,23 +87,61 @@
 					if (fruit !== null) {
 						document.getElementsByClassName(fruit.x + "-" + fruit.y)[0].classList.add("fruit");
 					}
-				}, 1000);
+				}, 100);
 
 				// this is where your implementation starts
 
+				let direction = {x: 0, y: 0}
+				let length = 1;
+
+				fruit = randomPlace();
+
+				function vectorAdd(a,b) {
+					return {x: a.x+b.x, y: a.y+b.y}
+				}
+
+				function randomPlace() {
+					return {x: Math.round(Math.random() * (fieldSize-1)), y: Math.round(Math.random() * (fieldSize-1))};
+				}
+
 				function gameUpdate() {
+					const oldSnake = snake[0];
+					const newSnake = vectorAdd(oldSnake, direction);
+					newSnake.x = (fieldSize + newSnake.x) % fieldSize
+					newSnake.y = (fieldSize + newSnake.y) % fieldSize
+					snake.unshift(newSnake);
+					snake = snake.slice(0, length);
+
+					for (let i = 1; i < snake.length; i++) {
+						if (snake[i].x === snake[0].x && snake[i].y === snake[0].y) {
+							length = 1;
+							snake = [{x:0, y:0}];
+							fruit = randomPlace();
+						}
+					}
+					if (fruit.x === snake[0].x && fruit.y === snake[0].y) {
+						length++;
+						fruit = randomPlace();
+					}
+
+
+
 				}
 
 				function leftPressed() {
+					direction = {x: -1, y: 0};
 				}
 
 				function rightPressed() {
+					direction = {x: 1, y: 0};
 				}
 
 				function upPressed() {
+					direction = {x: 0, y: -1};
 				}
 
 				function downPressed() {
+					direction = {x: 0, y: 1};
 				}
 			});
 		</script>