unibutton/game.js

import GameBasic from "./common/game_basic.js";
import NPC from "./common/npc.js";

class Game extends GameBasic {
    constructor() {
        super();
        this.ws = [];
    }
    sync(full = false) {
        let onScreen = this.entities.filter(x => x && x.health > 0).length;

        onScreen += 4;

        this.width = (this.width * 0.99) + (Math.sqrt(onScreen) * 16);
        this.height = (this.height * 0.99) + (Math.sqrt(onScreen) * 16);

        let { entities } = this;
        let entList = [];
        for (let entity of entities) {
            entity.pos = { x: Math.round(entity.pos.x), y: Math.round(entity.pos.y) };
            entity.vel = { x: Math.round(entity.vel.x), y: Math.round(entity.vel.y) };

            let props = entity.serverProps;
            let basic = props.map(prop => entity[prop]);
            let str = JSON.stringify(basic);

            entList.push({ entity, str, basic });
        }

        if (entList.length == 0) return;

        for (let client of this.ws) {
            if (!client.active) continue;

            let wsEnt = client.ent;

            if (!wsEnt) continue;

            wsEnt.isYou = true;

            let filtered;

            if (!full) {
                filtered = entList.filter(({ entity: ent }) => {
                    return Math.sqrt((ent.pos.x - wsEnt.pos.x) ** 2 + (ent.pos.y - wsEnt.pos.y) ** 2) < 777
                }
                );
            } else {
                filtered = entList;
            }

            let na = [];
            for (let i in filtered) {
                let fi = filtered[i]

                na.push(fi.str)
                if (fi.entity.isYou) {
                    let narr = [... fi.basic];
                    narr[fi.entity.serverProps.indexOf('isYou')] = 'true';
                    na[na.length - 1] = JSON.stringify(narr);
                }
            }

            na.push(JSON.stringify([this.width, this.height]))

            client.send(`[${na.join(',')}]`);

            wsEnt.isYou = false;
        }

        for (let entity of entities) {
            entity.r = 1;
        }
    }
    init() {
        super.init();

        let that = this;
        that.entities = [];

        for (let i = 0; i < 20; i++) {
            that.entities.push(new NPC())
        }

        setInterval(function () { that.sync(false) }, 1000 / 10);
        setInterval(function () { that.sync(true) }, 1000);
    }
}

export default Game;