public void SellPhase()
{
// Get all goods up for sale.
_productSupply = Populous.SellPhase();
// Reset Shortfall to zero.
Shortfall = new ProductAmountCollection();
// Fill Surplus preemtively, we'll remove bought products later.
_surplus = ProductSupply.Copy();
// While we're at it, also get total demand of all products
_productDemand = Populous.TotalDemand();
// And the hypothetical total production available.
_productionCapacity = Populous.TotalProduction();
}
public void LossPhase()
{
// Carry out losses.
var losses = Populous.LossPhase();
}
public void ConsumptionPhase()
{
// Kick down to populations.
Populous.Consume();
}
/// <summary>
/// Run through all productions that can be done and add them to the market.
/// </summary>
public void ProductionPhase()
{
// Run through production
Populous.ProductionPhase();
}
/// <summary>
/// Buys good from the market.
/// </summary>
/// <param name="buyer">The one buying the good.</param>
/// <param name="good">The good they are trying to buy.</param>
/// <param name="amount">How much they are trying to buy.</param>
/// <returns>The Receipt of purchases</returns>
public IProductAmountCollection BuyGoodsFromMarket(IPopulationGroup buyer,
IProduct good, double amount)
{
if (buyer is null)
{
throw new ArgumentNullException(nameof(buyer));
}
if (good is null)
{
throw new ArgumentNullException(nameof(good));
}
if (amount <= 0)
{
throw new ArgumentOutOfRangeException(nameof(amount));
}
// The result of the purchases.
IProductAmountCollection result = new ProductAmountCollection();
// First buy from local merchants, they only accept cash.
result = Populous.Merchants
.BuyGood(buyer.GetCash(AcceptedCurrencies), good, amount, this);
// see how much was bought.
double remainder = 0;
// if any was bought, update what we are seeking.
if (result.Contains(good))
{
remainder = amount - result.GetProductValue(good);
// and complete the transaction
buyer.CompleteTransaction(result);
}
// if no remainder, return
if (remainder <= 0)
{
return(result);
}
// Then buy from everyone else via both cash and barter.
foreach (var seller in Populous.GetPopsSellingProduct(good))
{
// If someone is selling the good, buy or barter with them.
var reciept = BuyGoods(buyer, good, remainder, seller);
// if something was bought
if (reciept.Count() > 0)
{
// remove it from the remainder
remainder -= reciept.GetProductValue(good);
// add it to our result
result.AddProducts(reciept);
}
// if nothing remains, we're done.
if (remainder <= 0)
{
return(result);
}
}
// Finish buy going to the travelling merchants, if all else fails.
foreach (var travSeller in TravellingMerchantsSelling(good))
{
var reciept = travSeller.BuyGood(buyer.GetCash(AcceptedCurrencies), good, remainder, this);
// if something was bought
if (reciept.Count() > 0)
{
// remove it from remainder
remainder -= reciept.GetProductValue(good);
// Complete the transaction for the buyer
buyer.CompleteTransaction(reciept);
// add it to the result
result.AddProducts(reciept);
}
// if nothing remains, return
if (remainder <= 0)
{
return(result);
}
}
// return the ultimate receipt.
return(result);
}
/// <summary>
/// Grows the population, prioritizing those which are happiest/most successful over others.
/// </summary>
public void PopGrowth()
{
// The average growth we achieve each day.
var popGrowth = 0.01; // to be divided later represents one year growth average.
// Get the success of the total populous.
var lifeSat = Populous.LifeNeedsSatisfaction();
var dailySat = Populous.DailyNeedsSatisfaction();
// modify growth by satisfaction.
if (lifeSat >= 0.99)
{ // Effectively totally satisfied.
// The higher the Daily need Satisfaction, the greater the pop growth.
popGrowth += 0.01 * dailySat;
}
else
{ // Life sat not satisfied, remove 3 times the missing life need satisfaction.
popGrowth -= 0.03 * (1 - lifeSat); // This bottoms out at -0.02.
}
// Randomize growth today.
var variance = rand.NextDouble(-0.01, 0.01); // -0.01 to 0.01
popGrowth += variance;
// Get the new pops to add (divide by our year length)
var newPops = TotalPopulation * popGrowth / 360;
// add fractional pops to the carryover growth
carryoverGrowth += newPops % 1;
// remove fraction from newPops
newPops -= newPops % 1;
// if carry over growth greater than 1 (positive or negative)
if (Math.Abs(carryoverGrowth) > 1)
{
// add (or remove) the whole number value of carry over.
newPops += carryoverGrowth - (carryoverGrowth % 1);
// update carryoverGrowth
carryoverGrowth = carryoverGrowth % 1;
}
// Get pops ordered by success (descending order)
var popsBySuccess = Populous.Pops.OrderByDescending(x => x.Success());
// get total weight of the populous (all positive values, no negatives)
double totalWeight = 0;
foreach (var pop in popsBySuccess)
{
// get the success
totalWeight += pop.Success();
}
// Now, we figure out where to put the pops.
foreach (var pop in popsBySuccess)
{
// get pop's success again
var success = pop.Success();
// if pop is not successful, regardless of reason, GTFO, failing pops don't grow
// and if the pop is not successful, no following pops will be either.
if (success <= 0.5)
{
break;
}
// get pop growth, divided by weight, and multiplied by success
var born = newPops / totalWeight * success;
// modify up or down by 50%
born *= (0.5 + rand.NextDouble());
// remove hanging decimals
born -= born % 1;
// add new pops to group
pop.AddPop(born);
// remove born from new pops
newPops -= born;
// remove the success from the total weight
totalWeight -= success;
}
// any remainder pop, just add to the most successful pop.
popsBySuccess.First().AddPop(newPops - (newPops % 1)); // any extra just drop.
}