bitburner-src/src/StockMarket/PlayerInfluencing.ts

/**
 * Implementation of the mechanisms that allow the player to affect the
 * Stock Market
 */
import { Stock } from "./Stock";
import { StockMarket } from "./StockMarket";

import { Company } from "../Company/Company";
import { Server } from "../Server/Server";

// Change in second-order forecast due to hacks/grows
export const forecastForecastChangeFromHack = 0.1;

// Change in second-order forecast due to company work
export const forecastForecastChangeFromCompanyWork = 0.001;

/**
 * Potentially decreases a stock's second-order forecast when its corresponding
 * server is hacked. The chance of the hack decreasing the stock's second-order
 * forecast is dependent on what percentage of the server's money is hacked
 * @param {Server} server - Server being hack()ed
 * @param {number} moneyHacked - Amount of money stolen from the server
 */
export function influenceStockThroughServerHack(server: Server, moneyHacked: number): void {
  const orgName = server.organizationName;
  let stock: Stock | null = null;
  if (typeof orgName === "string" && orgName !== "") {
    stock = StockMarket[orgName];
  }
  if (!(stock instanceof Stock)) {
    return;
  }

  const percTotalMoneyHacked = moneyHacked / server.moneyMax;
  if (Math.random() < percTotalMoneyHacked) {
    stock.changeForecastForecast(stock.otlkMagForecast - forecastForecastChangeFromHack);
  }
}

/**
 * Potentially increases a stock's second-order forecast when its corresponding
 * server is grown (grow()). The chance of the grow() to increase the stock's
 * second-order forecast is dependent on how much money is added to the server
 * @param {Server} server - Server being grow()n
 * @param {number} moneyGrown - Amount of money added to the server
 */
export function influenceStockThroughServerGrow(server: Server, moneyGrown: number): void {
  const orgName = server.organizationName;
  let stock: Stock | null = null;
  if (typeof orgName === "string" && orgName !== "") {
    stock = StockMarket[orgName];
  }
  if (!(stock instanceof Stock)) {
    return;
  }

  const percTotalMoneyGrown = moneyGrown / server.moneyMax;
  if (Math.random() < percTotalMoneyGrown) {
    stock.changeForecastForecast(stock.otlkMagForecast + forecastForecastChangeFromHack);
  }
}

/**
 * Potentially increases a stock's second-order forecast when the player works for
 * its corresponding company.
 * @param {Company} company - Company being worked for
 * @param {number} performanceMult - Effectiveness of player's work. Affects influence
 * @param {number} cyclesOfWork - # game cycles of work being processed
 */
export function influenceStockThroughCompanyWork(
  company: Company,
  performanceMult: number,
  cyclesOfWork: number,
): void {
  const compName = company.name;
  let stock: Stock | null = null;
  stock = StockMarket[compName];
  if (!(stock instanceof Stock)) {
    return;
  }

  if (Math.random() < 0.002 * cyclesOfWork) {
    const change = forecastForecastChangeFromCompanyWork * performanceMult;
    stock.changeForecastForecast(stock.otlkMagForecast + change);
  }
}