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<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>Jogo - Caça Goblin</title>
</head>
<body>
<script>
// Criando o canvas
var canvas = document.createElement("canvas");
var context = canvas.getContext("2d");
canvas.width = 512;
canvas.height = 480;
document.body.appendChild(canvas);
// Imagem de Fundo
var backgroundPronto = false;
var backgroundImagem = new Image();
backgroundImagem.onload = function () {
backgroundPronto = true;
};
backgroundImagem.src = "http://bit.do/e8H6m";
// Heroi Imagem
var heroiPronto = false;
var heroiImage = new Image();
heroiImage.onload = function () {
heroiPronto = true;
};
heroiImage.src = "http://bit.do/e8H59";
// goblins Imagem
var goblinsProntos = false;
var goblinsImage = new Image();
goblinsImage.onload = function () {
goblinsProntos = true;
};
goblinsImage.src = "http://bit.do/e8H6g";
// Objetos do Jogo
var heroi = {
velocidade: 256 // movimentos em pixels por segundo
};
var goblins = {};
var goblinsCapturados = 0;
// Handle keyboard controls
var keysDown = {};
addEventListener("keydown", function (e) {
keysDown[e.keyCode] = true;
}, false);
addEventListener("keyup", function (e) {
delete keysDown[e.keyCode];
}, false);
// Reset o jogo quando o jogador pegar um goblins
var reset = function () {
heroi.x = canvas.width / 2;
heroi.y = canvas.height / 2;
// fazer os globins aparecerem aleatoriamente
goblins.x = 32 + (Math.random() * (canvas.width - 64));
goblins.y = 32 + (Math.random() * (canvas.height - 64));
};
// Atualiza os Objetos do Jogo
var update = function (modifier) {
if (38 in keysDown) { // Move para cima
heroi.y -= heroi.velocidade * modifier;
}
if (40 in keysDown) { //Move para baixo
heroi.y += heroi.velocidade * modifier;
}
if (37 in keysDown) { // Move para esquerda
heroi.x -= heroi.velocidade * modifier;
}
if (39 in keysDown) { // Move para direita
heroi.x += heroi.velocidade * modifier;
}
// Checkar colisao
if (
heroi.x <= (goblins.x + 32)
&& goblins.x <= (heroi.x + 32)
&& heroi.y <= (goblins.y + 32)
&& goblins.y <= (heroi.y + 32)
) {
++goblinsCapturados;
reset();
}
};
// Desenhando tudo
var render = function () {
if (backgroundPronto) {
context.drawImage(backgroundImagem, 0, 0);
}
if (heroiPronto) {
context.drawImage(heroiImage, heroi.x, heroi.y);
}
if (goblinsProntos) {
context.drawImage(goblinsImage, goblins.x, goblins.y);
}
// Score
context.fillStyle = "rgb(250, 250, 250)";
context.font = "24px Helvetica";
context.textAlign = "left";
context.textBaseline = "top";
context.fillText("Goblins capturados: " + goblinsCapturados, 32, 32);
};
// The principal game loop
var principal = function () {
var now = Date.now();
var delta = now - then;
update(delta / 1000);
render();
then = now;
};
// Rodar o Jogo
reset();
var then = Date.now();
setInterval(principal, 1); // Execute as fast as possible
</script>
</body>
</html>
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