58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
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const imageboy = require("imageboy");
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const fastify = require("fastify")();
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const path = require("path");
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const fs = require("fs");
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let lastFrame = "";
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let emulator;
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const mainHTML = fs.readFileSync(path.join(__dirname, "html", "gb.html"), "utf8");
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const KEYMAP = {
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RIGHT: 0,
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LEFT: 1,
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UP: 2,
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DOWN: 3,
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A: 4,
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B: 5,
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SELECT: 6,
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START: 7
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};
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async function run() {
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if (!fs.existsSync(path.join(__dirname, "rom.gb"))) {
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console.log("rom.gb missing.")
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return;
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}
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emulator = imageboy.run({
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path: "./rom.gb",
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interval: 16.6666667,
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onFrame: function(frame) {
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if (lastFrame !== frame) {
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lastFrame = frame;
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}
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}
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});
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fastify.get("/", async(request, reply) => {
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reply.type("text/html");
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reply.send(mainHTML);
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});
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fastify.get("/image", async(request, reply) => {
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reply.type("image/png").send(lastFrame);
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});
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fastify.get("/control", async(request, reply) => {
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const button = request.query.button;
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if (button) {
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const mappedButton = KEYMAP[button.toUpperCase()];
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if (mappedButton) emulator.pressKeys(emulator.gameboy, [mappedButton]);
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}
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});
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try {
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await fastify.listen({ port: 3000 });
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} catch (err) {
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console.log(err);
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}
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}
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run();
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