serialization.js

'use strict';
/**
 * serializes an game object into a string.
 * Unsupported objects: Global objects, RoomVisual, Room.Terrain, Store, StructureSpawn.spawning
 * @param obj {Object}
 * @return {string | undefined}
 */
global.serialize = function(obj){
    if(obj === undefined) return;
    function f2(num){
        if(num < 10){
            return "0".concat(num.toString());
        }else{
            return num.toString();
        }
    }
    if(obj instanceof Room || obj instanceof Flag){
        return obj.name;
    }else if(obj instanceof RoomPosition){
        return `${f2(obj.x)}${f2(obj.y)}${obj.roomName}`;
    }else if(obj instanceof PathFinder.CostMatrix) {
        return serializeMatrix(obj);
    }else{
        return obj.id;
    }
};

/**
 * @param s {string} the serialized string
 * @param type {function} type of the original object
 * @return {object} the deserialized object
 */
global.deserialize = function(s, type){
    if(s == null){
        return undefined;
    }
    switch (type) {
        case StructureSpawn: return Game.spawns[s];
        case Room: return Game.rooms[s];
        case RoomPosition: return new RoomPosition(
            parseInt(s.substr(0,2)),
            parseInt(s.substr(2,2)), s.substr(4));
        default: return Game.getObjectById(s);
    }
};

global.getPosObjPair = function (obj) {
    if(obj == null) return;
    return [serialize(obj.pos), serialize(obj)];
};


const minChar = 32;
const maxChar = 126;
const chars = maxChar - minChar + 1;

function serializeMatrix(costMatrix){
    //matrix of 50 * 50 uint8
    let str = '';
    function convertToStr(n) {
        let s = [];
        for(let i = 0; i < 5; i++){
            s[4 - i] =  String.fromCharCode(n % chars);
            n = Math.floor(n / chars);
        }
        return s.join('');
    }
    for(let index = 0; index < 2500; index += 4){
        let n = 0;
        for(let i = 0; i < 4; i++){
            let x = (index + i) % 50;
            let y = Math.floor((index + i) / 50);
            n += costMatrix.get(x, y);
            if(i !== 3){
                n = n << 8 >>> 0;
            }
        }
        str += convertToStr(n);
    }
    return str;
}