bitburner-src/src/Server/formulas/grow.ts

import { CONSTANTS } from "../../Constants";
import { Server } from "../Server";
import { BitNodeMultipliers } from "../../BitNode/BitNodeMultipliers";
import { IPlayer } from "../../PersonObjects/IPlayer";

export function calculateServerGrowth(
  server: Server,
  threads: number,
  p: IPlayer,
  cores = 1,
): number {
  const numServerGrowthCycles = Math.max(Math.floor(threads), 0);

  //Get adjusted growth rate, which accounts for server security
  const growthRate = CONSTANTS.ServerBaseGrowthRate;
  let adjGrowthRate = 1 + (growthRate - 1) / server.hackDifficulty;
  if (adjGrowthRate > CONSTANTS.ServerMaxGrowthRate) {
    adjGrowthRate = CONSTANTS.ServerMaxGrowthRate;
  }

  //Calculate adjusted server growth rate based on parameters
  const serverGrowthPercentage = server.serverGrowth / 100;
  const numServerGrowthCyclesAdjusted =
    numServerGrowthCycles *
    serverGrowthPercentage *
    BitNodeMultipliers.ServerGrowthRate;

  //Apply serverGrowth for the calculated number of growth cycles
  const coreBonus = 1 + (cores - 1) / 16;
  return Math.pow(
    adjGrowthRate,
    numServerGrowthCyclesAdjusted * p.hacking_grow_mult * coreBonus,
  );
}