unibutton/static/js/index.js

import Player from "./player.js";
import GameBasic from "./game_basic.js";
import NPC from "./npc.js";

const cs = 1024;
const assets = [
    'assets/player.svg',
    'assets/head.svg',
    'assets/map.svg',
    'assets/npc.svg'
];
const legalTypes = {
    Player,
    NPC
}
const emojis = [
    'Troll',
    'Exit',
    'Elec Piano Loop',
    'No',
    'Yes'
]
const origin = (window.location.href.indexOf('localhost') != -1) ? window.location.href : 'https://ub.zenoverse.net/'

class Game extends GameBasic {
    constructor() {
        super();

        let assetsIn = {};

        for (let asset in assets) {
            assetsIn[asset] = new Image();
            assetsIn[asset].src = assets[asset];
        }

        let canvas = document.querySelector("#canvas");

        canvas.width = canvas.height = cs;

        this.canvas = canvas;
        this.ctx = canvas.getContext("2d");
        this.assetsIn = assetsIn;
    }
    render() {
        let { ctx, assetsIn, entities, player, width, height } = this;

        ctx.clearRect(0, 0, cs, cs);

        ctx.save();

        ctx.translate(player.camera.x + cs / 2, player.camera.y + cs / 2);

        ctx.drawImage(assetsIn[2], -width / 2, -height / 2, width, height);

        for (let ent of entities) {
            if (ent.health <= 0) continue;

            if (ent.type == 'Player') {
                ctx.save();

                ctx.translate(ent.pos.x, ent.pos.y);
                ctx.rotate(ent.rot);
                ctx.drawImage(assetsIn[1], -64 / 2, -128, 64, 128);

                ctx.restore();

                if (ent.playing) {
                    ctx.strokeStyle = 'white';
                    ctx.lineWidth = "20";
                    ctx.beginPath();
                    ctx.arc(ent.pos.x, ent.pos.y, 32, 0, 2 * Math.PI);
                    ctx.stroke();
                }

                ctx.fillStyle = ent.you.split('-')[0];

                ctx.beginPath();
                ctx.arc(ent.pos.x, ent.pos.y, 32, 0, 2 * Math.PI);
                ctx.fill();
            }

            ctx.drawImage((ent.type == 'NPC') ? assetsIn[3] : assetsIn[0], ent.pos.x - 64 / 2, ent.pos.y - 64 / 2, 64, 64);

            if (ent.type != 'Player') continue;

            ctx.strokeStyle = "rgb(255,255,255)";
            ctx.lineWidth = "8";
            ctx.textAlign = "center";
            ctx.textBaseline = "bottom";
            ctx.font = "bold 16px sans-serif";

            let args = [`HP: ${ent.health} KO: ${ent.headCount} XY: ${Math.round(ent.pos.x)}, ${Math.round(ent.pos.y)}`, ent.pos.x, ent.pos.y - 64 / 2];

            ctx.strokeText(...args);
            ctx.fillText(...args);
        }

        ctx.restore();

        if (player.health <= 0 || player.isMenu) {
            this.doMenu();
        }
    }
    doMenu() {
        let { ctx, player } = this;

        ctx.fillStyle = 'rgba(0,0,0,0.5)';
        ctx.fillRect(0, 0, cs, cs);
        ctx.fillStyle = 'rgb(255,255,255)';
        ctx.textAlign = "center";
        ctx.textBaseline = "middle";
        ctx.font = "bold 48px sans-serif";
        if (player.health <= 0) ctx.fillText('You died! Click to respawn', cs / 2, cs / 2);
        if (player.isMenu) {
            let r = Math.floor(Math.abs(player.rot / 1.2) % emojis.length);
            ctx.fillText(`Click to react ${emojis[r]}`, cs / 2, cs / 2)
            ctx.font = "bold 16px sans-serif";
            ctx.fillText(`Wait for emojis ${emojis.join(', ')}`, cs / 2, cs / 2 + 50)
        }
    }
    click() {
        let { player } = this;

        if (player.health <= 0) {
            this.ws = new WebSocket(origin);
            this.player = new Player(false, true);
            this.entities.push(this.player);
        } else if (player.isMenu) {
            player.r = Math.floor(Math.abs(player.rot / 1.2) % emojis.length);
            player.isMenu = false;
            this.sync();
        } else {
            player.bump();
            this.sync();
        }
    }
    sync() {
        let { player } = this;

        let { vel, dir, you, ticks, isMenu, r, playing } = player;

        this.ws.send(JSON.stringify({ vel, dir, you, ticks, isMenu, r, playing }));
    }
    recv({ data }) {
        let { player } = this;
        let you = player.you;

        let that = this;

        let entList = JSON.parse(data);
        entList = entList.map(x => {
            let type = (Object.keys(legalTypes).indexOf(x.type) == -1) ? Player : legalTypes[x.type];
            x.handleTick = type.prototype.handleTick;
            if (x.r != 1) {
                let a = new Audio(`assets/${emojis[x.r]}.wav`);
                a.addEventListener('ended', () => {
                    if (x.you == you) {
                        that.player.playing = false;
                        that.sync();
                    }
                    a.remove();
                })
                if (you != x.you) {
                    x.r = 1;
                }
                a.play();
            }
            return x;
        })

        let matchingPlayer = entList.filter(x => x.you == you)

        this.player = Object.assign(this.player || new Player(false, false), matchingPlayer[0]);

        if (this.player.r != 1) {
            this.player.playing = true;
            this.player.r = 1;
            that.sync();
        }

        this.entities = entList;

        if (this.entities.length == 0) this.entities = [this.player];
    }
    init() {
        super.init();

        let that = this;

        this.ws = new WebSocket(origin);

        this.ws.addEventListener('message', function (e) { that.recv(e) });

        setInterval(function () { that.render() }, 1000 / 60);
        setInterval(function () { that.sync() }, 1000 / 5);

        game.canvas.onclick = () => that.click();
    }
}

var game = new Game();

game.init();