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Snake Game #2546

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Snake Game #2546

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15 changes: 12 additions & 3 deletions index.html
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Original file line number Diff line number Diff line change
@@ -1,13 +1,22 @@
<!DOCTYPE html>
<html lang="en">
<html lang="pt-br">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>HTML + CSS</title>

<link rel="stylesheet" href="styles.css" />

<script defer src="index.js"></script>

<title>Snake Game</title>
</head>
<body>
<h1>This is a simple HTML + CSS template!</h1>
<h1>Snake Game!</h1>
<canvas id="snake" width="512" height="512"></canvas>

<footer>
"Cobrinha Games Ltda."
</footer>
</body>
</html>
84 changes: 84 additions & 0 deletions index.js
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@@ -0,0 +1,84 @@
//declarar variaveis
let canvas = document.getElementById("snake");
let context = canvas.getContext("2d");
let box = 32;
let snake = [{ x: 8 * box, y: 8 * box }];
let direction = "right";
let food = {
x: Math.floor(Math.random() * 15 + 1) * box,
y: Math.floor(Math.random() * 15 + 1) * box
};
//criar background
function createBG() {
context.fillStyle = "pink";
context.fillRect(0, 0, 16 * box, 16 * box);
}
//criar cobrinha
function createSnake() {
for (let i in snake) {
context.fillStyle = "green";
context.fillRect(snake[i].x, snake[i].y, box, box);
}
}
//criar comida
function createFood() {
context.fillStyle = "red";
context.fillRect(food.x, food.y, box, box);
}
//update
function update(event) {
if (event.keyCode == 37 && direction != "right") {
direction = "left";
} else if (event.keyCode == 38 && direction != "down") {
direction = "up";
} else if (event.keyCode == 39 && direction != "left") {
direction = "right";
} else if (event.keyCode == 40 && direction != "up") {
direction = "down";
}
}
//começar o jogo
function startGame() {
if (snake[0].x > 15 * box && direction == "right") snake[0].x = 0;
if (snake[0].x < 0 && direction == "left") snake[0].x = 15 * box;
if (snake[0].y > 15 * box && direction == "down") snake[0].y = 0;
if (snake[0].y < 0 && direction == "up") snake[0].y = 15 * box;
//colisão
for (let i = 1; i < snake.length; i++) {
if (snake[0].x === snake[i].x && snake[0].y === snake[i].y) {
alert("Game Over!");
clearInterval(game); //interrompe o jogo
}
}
//chamada das funções
createBG();
createSnake();
createFood();
//inicialização coordenadas da cabeça
let snakeX = snake[0].x;
let snakeY = snake[0].y;

if (direction == "right") snakeX += box;
if (direction == "left") snakeX -= box;
if (direction == "up") snakeY -= box;
if (direction == "down") snakeY += box;
//colisão com a comida
if (snakeX !== food.x || snakeY !== food.y) {
snake.pop();
} else {
food = {
x: Math.floor(Math.random() * 15 + 1) * box,
y: Math.floor(Math.random() * 15 + 1) * box
};
}

let newHead = {
x: snakeX,
y: snakeY
};

snake.unshift(newHead);
}
document.addEventListener("keydown", update);

let game = setInterval(startGame, 100); //atualização do canvas
36 changes: 34 additions & 2 deletions styles.css
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@@ -1,3 +1,35 @@
h1 {
text-decoration: underline;
@import url("https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap");

body {
height: 95vh;
width: 95vw;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
background-color: #9d40af;
color: #466e58;
font-family: "Press Start 2P", cursive;
}

canvas {
margin-bottom: 50px;
}

footer {
display: flex;
align-items: center;
justify-content: center;
flex-direction: column;
text-align: center;
font-size: 15px;
margin-top: 25px;
margin-bottom: 15px;
font-family: "Roboto", sans-serif;
}

footer a {
text-decoration: none;
color: #fff;
}