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) };
            entList.push(entity);
        }

        if (entList.length == 0) return;

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

            let wsEnt = client.ent;
            wsEnt.isYou = true;
            if (!wsEnt) continue;

            let filtered;

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

            filtered= filtered.map(x => {
                let props = x.serverProps;
                return props.map(prop => x[prop]);
            });

            filtered.push([this.width,this.height])

            client.send(JSON.stringify(filtered));

            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;