SilasRodrigues19 · April 1, 2023 23:51 · Apr 1, 2023
diff --git a/script.js b/script.js
@@ -0,0 +1,94 @@
+let canvas = document.getElementById('snake');
+let context = canvas.getContext('2d');
+let box = 32;
+let snake = [];
+snake[0] = {
+  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,
+};
+
+const foodImg = new Image();
+foodImg.src =
+  'https://png.pngtree.com/png-vector/20220709/ourmid/pngtree-vector-clip-art-and-illustration-of-red-apple-png-image_5827049.png';
+
+function drawScore() {
+  context.fillStyle = '#fff';
+  context.font = '2rem Arial';
+  context.fillText(snake.length, 2 * box, 1.6 * box);
+}
+
+let score = 0; //contador de peças da cobrinha
+
+function criarBG() {
+  context.fillStyle = 'black';
+  context.fillRect(0, 0, 16 * box, 16 * box);
+}
+
+function criarCobrinha() {
+  for (i = 0; i < snake.length; i++) {
+    context.fillStyle = '#FFF';
+    context.fillRect(snake[i].x, snake[i].y, box, box);
+  }
+}
+
+function drawFood() {
+  context.drawImage(foodImg, food.x, food.y, box, box);
+}
+
+document.addEventListener('keydown', update);
+
+function update(event) {
+  if (event.keyCode == 37 && direction != 'right') direction = 'left';
+  if (event.keyCode == 38 && direction != 'down') direction = 'up';
+  if (event.keyCode == 39 && direction != 'left') direction = 'right';
+  if (event.keyCode == 40 && direction != 'up') direction = 'down';
+}
+
+function iniciarJogo() {
+  if (snake[0].x > 15 * box && direction == 'right') snake[0].x = 0;
+  if (snake[0].x < 0 && direction == 'left') snake[0].x = 16 * box;
+  if (snake[0].y > 15 * box && direction == 'down') snake[0].y = 0;
+  if (snake[0].y < 0 && direction == 'up') snake[0].y = 16 * box;
+
+  for (i = 1; i < snake.length; i++) {
+    if (snake[0].x == snake[i].x && snake[0].y == snake[i].y) {
+      clearInterval(jogo);
+      alert('Game Over :(');
+    }
+  }
+
+  criarBG();
+  criarCobrinha();
+  drawFood();
+  drawScore();
+
+  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;
+
+  if (snakeX != food.x || snakeY != food.y) {
+    snake.pop();
+  } else {
+    food.x = Math.floor(Math.random() * 15 + 1) * box;
+    food.y = Math.floor(Math.random() * 15 + 1) * box;
+    score++; //incrementa o contador quando a cobrinha ganha uma peça
+  }
+
+  let newHead = {
+    x: snakeX,
+    y: snakeY,
+  };
+
+  snake.unshift(newHead);
+}
+
+let jogo = setInterval(iniciarJogo, 100);