BulletScreen/target.html at main · N0Ball/BulletScreen · GitHub

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<!DOCTYPE html>
<html lang="en">
    <head>
        <title>Your Presentation</title>
    </head>
    <body>
        Messages
        <ul id="list"></ul>
        <div id="bullet-screen">
            <canvas id="bullet-screen-canvas"></canvas>
        </div>
    </body>
    <script>

        let Velocity = 1;

        let canvas = document.getElementById('bullet-screen-canvas');
        let screen = document.getElementById('bullet-screen');

        var ctx = canvas.getContext("2d");
        ctx.font = "30px Arial";

        screen.style = `
            width: 100vw;
            height: 100vh;
            position: absolute;
            top: 0;
            left: 0;
            overflow: hidden;
        `

        canvas.style = `
            width: 150vw;
            height: 100vh;
            background-color: rgba(0, 0, 0, .05);
            position: absolute;
            left: 0;
            top: 0;
        `;

        function Update(){

            messages.forEach(e => e.update())

            requestAnimationFrame(Update)
        }

        websocket = new WebSocket("ws://localhost:5555/");

        let id = null

        websocket.onmessage = function (event) {
            data = JSON.parse(event.data);
            if (data.header == "Reg Response"){
                id = data.data;
            }else if (data.header == "GET MSG"){
                addAnother(data.data);
            }
        };

        login()

        function login() {
            setTimeout(() => {
                try {
                    websocket.send(JSON.stringify({
                        "header": "SET TARGET",
                        "data": "g=8S3r!#2%Hra5dU",
                        "id": id
                    }))
                }catch (e){
                    alert("Error connecting to server, trying again in 5 seconds");
                    setTimeout(() => {
                        login();
                    }, 5000);
                }
            }, 500);
        }

        function addAnother(msg) {
            var ul = document.getElementById("list");
            var li = document.createElement("li");
            li.style = `color: ${msg['color']}`
            li.appendChild(document.createTextNode("Element " + msg['msg']));
            ul.appendChild(li)
        }
    </script>
</html>