/// <summary>
/// Method to determine resources required for this activity in the current month
/// </summary>
/// <returns>List of required resource requests</returns>
public override List <ResourceRequest> GetResourcesNeededForActivity()
{
if (people is null | food is null)
{
return(null);
}
List <LabourType> peopleList = people.Items.Where(a => IncludeHiredLabour || a.Hired == false).ToList();
peopleList.Select(a => a.FeedToTargetIntake == 0);
// determine AEs to be fed
double aE = peopleList.Sum(a => a.AdultEquivalent);
if (aE <= 0)
{
return(null);
}
int daysInMonth = DateTime.DaysInMonth(Clock.Today.Year, Clock.Today.Month);
// determine feed limits (max kg per AE per day * AEs * days)
double intakeLimit = DailyIntakeLimit * aE * daysInMonth;
// remove previous consumption
double otherIntake = this.DailyIntakeOtherSources * aE * daysInMonth;
otherIntake += peopleList.Sum(a => a.GetAmountConsumed());
List <LabourActivityFeedTarget> labourActivityFeedTargets = this.FindAllChildren <LabourActivityFeedTarget>().Cast <LabourActivityFeedTarget>().ToList();
// determine targets
foreach (LabourActivityFeedTarget target in labourActivityFeedTargets)
{
// calculate target
target.Target = target.TargetValue * aE * daysInMonth;
// set initial level based on off store inputs
target.CurrentAchieved = target.OtherSourcesValue * aE * daysInMonth;
// calculate current level from previous intake this month (LabourActivityFeed)
target.CurrentAchieved += people.GetDietaryValue(target.Metric, IncludeHiredLabour, true) * aE * daysInMonth;
// add sources outside of this activity to peoples' diets
if (target.OtherSourcesValue > 0)
{
foreach (var person in peopleList)
{
LabourDietComponent outsideEat = new LabourDietComponent();
outsideEat.AddOtherSource(target.Metric, target.OtherSourcesValue * person.AdultEquivalent * daysInMonth);
person.AddIntake(outsideEat);
}
}
}
// get max months before spoiling of all food stored (will be zero for non perishable food)
int maxFoodAge = food.FindAllChildren <HumanFoodStoreType>().Cast <HumanFoodStoreType>().Max(a => a.Pools.Select(b => a.UseByAge - b.Age).DefaultIfEmpty(0).Max());
// create list of all food parcels
List <HumanFoodParcel> foodParcels = new List <HumanFoodParcel>();
foreach (HumanFoodStoreType foodStore in food.FindAllChildren <HumanFoodStoreType>().Cast <HumanFoodStoreType>().ToList())
{
foreach (HumanFoodStorePool pool in foodStore.Pools)
{
foodParcels.Add(new HumanFoodParcel()
{
FoodStore = foodStore,
Pool = pool,
Expires = ((foodStore.UseByAge == 0) ? maxFoodAge + 1: foodStore.UseByAge - pool.Age)
});
}
}
foodParcels = foodParcels.OrderBy(a => a.Expires).ToList();
// if a market exists add the available market produce to the list below that ordered above.
// order market food by price ascending
// this will include market available food in the decisions.
// will need to purchase this food before taking it if cost associated.
// We can check if the parent of the human food store used is a market and charge accordingly.
// for each market
List <HumanFoodParcel> marketFoodParcels = new List <HumanFoodParcel>();
ResourcesHolder resources = Resources.FoundMarket.Resources;
if (resources != null)
{
HumanFoodStore food = resources.HumanFoodStore();
if (food != null)
{
foreach (HumanFoodStoreType foodStore in food.FindAllChildren <HumanFoodStoreType>())
{
foreach (HumanFoodStorePool pool in foodStore.Pools)
{
marketFoodParcels.Add(new HumanFoodParcel()
{
FoodStore = foodStore,
Pool = pool,
Expires = ((foodStore.UseByAge == 0) ? maxFoodAge + 1 : foodStore.UseByAge - pool.Age)
});
}
}
}
}
foodParcels.AddRange(marketFoodParcels.OrderBy(a => a.FoodStore.Price(PurchaseOrSalePricingStyleType.Purchase).PricePerPacket));
double fundsAvailable = double.PositiveInfinity;
if (bankAccount != null)
{
fundsAvailable = bankAccount.FundsAvailable;
}
int parcelIndex = 0;
double intake = otherIntake;
// start eating food from list from that about to expire first
while (parcelIndex < foodParcels.Count)
{
foodParcels[parcelIndex].Proportion = 0;
if (intake < intakeLimit & (labourActivityFeedTargets.Where(a => !a.TargetMet).Count() > 0 | foodParcels[parcelIndex].Expires == 0))
{
// still able to eat and target not met or food about to expire this timestep
// reduce by amout that can be eaten
double propCanBeEaten = Math.Min(1, (intakeLimit - intake) / (foodParcels[parcelIndex].FoodStore.EdibleProportion * foodParcels[parcelIndex].Pool.Amount));
// reduce to target limits
double propToTarget = 1;
if (foodParcels[parcelIndex].Expires != 0)
{
// if the food is not going to spoil
// then adjust what can be eaten up to target otherwise allow over target consumption to avoid waste
LabourActivityFeedTarget targetUnfilled = labourActivityFeedTargets.Where(a => !a.TargetMet).FirstOrDefault();
if (targetUnfilled != null)
{
// calculate reduction to metric target
double metricneeded = Math.Max(0, targetUnfilled.Target - targetUnfilled.CurrentAchieved);
double amountneeded = metricneeded / foodParcels[parcelIndex].FoodStore.ConversionFactor(targetUnfilled.Metric);
propToTarget = Math.Min(1, amountneeded / (foodParcels[parcelIndex].FoodStore.EdibleProportion * foodParcels[parcelIndex].Pool.Amount));
}
}
foodParcels[parcelIndex].Proportion = Math.Min(propCanBeEaten, propToTarget);
// work out if there will be a cost limitation, only if a price structure exists for the resource
double propToPrice = 1;
if (foodParcels[parcelIndex].FoodStore.PricingExists(PurchaseOrSalePricingStyleType.Purchase))
{
ResourcePricing price = foodParcels[parcelIndex].FoodStore.Price(PurchaseOrSalePricingStyleType.Purchase);
double cost = (foodParcels[parcelIndex].Pool.Amount * foodParcels[parcelIndex].Proportion) / price.PacketSize * price.PricePerPacket;
if (cost > 0)
{
propToPrice = Math.Min(1, fundsAvailable / cost);
// remove cost from running check tally
fundsAvailable = Math.Max(0, fundsAvailable - (cost * propToPrice));
// real finance transactions will happen in the do activity as stuff is allocated
// there should not be shortfall as all the checks and reductions have happened here
}
}
foodParcels[parcelIndex].Proportion *= propToPrice;
// update intake
double newIntake = (foodParcels[parcelIndex].FoodStore.EdibleProportion * foodParcels[parcelIndex].Pool.Amount * foodParcels[parcelIndex].Proportion);
intake += newIntake;
// update metrics
foreach (LabourActivityFeedTarget target in labourActivityFeedTargets)
{
target.CurrentAchieved += newIntake * foodParcels[parcelIndex].FoodStore.ConversionFactor(target.Metric);
}
}
else if (intake >= intakeLimit && labourActivityFeedTargets.Where(a => !a.TargetMet).Count() > 1)
{
// full but could still reach target with some substitution
// but can substitute to remove a previous target
// does the current parcel have better target values than any previous non age 0 pool of a different food type
}
else
{
break;
}
parcelIndex++;
}
// fill resource requests
List <ResourceRequest> requests = new List <ResourceRequest>();
foreach (var item in foodParcels.GroupBy(a => a.FoodStore))
{
double amount = item.Sum(a => a.Pool.Amount * a.Proportion);
if (amount > 0)
{
double financeLimit = 1;
// if obtained from the market make financial transaction before taking
ResourcePricing price = item.Key.Price(PurchaseOrSalePricingStyleType.Sale);
if (bankAccount != null && item.Key.Parent.Parent.Parent == Market && price.PricePerPacket > 0)
{
// if shortfall reduce purchase
ResourceRequest marketRequest = new ResourceRequest
{
ActivityModel = this,
Required = amount / price.PacketSize * price.PricePerPacket,
AllowTransmutation = false,
Category = "Food purchase",
MarketTransactionMultiplier = 1
};
bankAccount.Remove(marketRequest);
}
requests.Add(new ResourceRequest()
{
Resource = item.Key,
ResourceType = typeof(HumanFoodStore),
AllowTransmutation = false,
Required = amount * financeLimit,
ResourceTypeName = item.Key.Name,
ActivityModel = this,
Category = "Consumption"
});
}
}
// if still hungry and funds available, try buy food in excess of what stores (private or market) offered using transmutation if present.
// This will force the market or private sources to purchase more food to meet demand if transmutation available.
// if no market is present it will look to transmutating from its own stores if possible.
// this means that other than a purchase from market (above) this activity doesn't need to worry about financial tranactions.
if (intake < intakeLimit && (labourActivityFeedTargets.Where(a => !a.TargetMet).Count() > 0) && fundsAvailable > 0)
{
ResourcesHolder resourcesHolder = Resources;
// if market is present point to market to find the resource
if (Market != null)
{
resourcesHolder = Market.FindChild <ResourcesHolder>();
}
// don't worry about money anymore. The over request will be handled by the transmutation.
// move through specified purchase list
foreach (LabourActivityFeedTargetPurchase purchase in this.FindAllChildren <LabourActivityFeedTargetPurchase>().Cast <LabourActivityFeedTargetPurchase>().ToList())
{
HumanFoodStoreType foodtype = resourcesHolder.GetResourceItem(this, purchase.FoodStoreName, OnMissingResourceActionTypes.Ignore, OnMissingResourceActionTypes.Ignore) as HumanFoodStoreType;
if (foodtype != null && (foodtype.TransmutationDefined & intake < intakeLimit))
{
LabourActivityFeedTarget targetUnfilled = labourActivityFeedTargets.Where(a => !a.TargetMet).FirstOrDefault();
if (targetUnfilled != null)
{
// calculate reduction to metric target
double metricneeded = Math.Max(0, (targetUnfilled.Target - targetUnfilled.CurrentAchieved));
double amountneeded = metricneeded / foodtype.ConversionFactor(targetUnfilled.Metric);
if (intake + amountneeded > intakeLimit)
{
amountneeded = intakeLimit - intake;
}
double amountfood = amountneeded / foodtype.EdibleProportion;
// update intake
intake += amountfood;
// find in requests or create a new one
ResourceRequest foodRequestFound = requests.Find(a => a.Resource == foodtype) as ResourceRequest;
if (foodRequestFound is null)
{
requests.Add(new ResourceRequest()
{
Resource = foodtype,
ResourceType = typeof(HumanFoodStore),
AllowTransmutation = true,
Required = amountfood,
ResourceTypeName = purchase.FoodStoreName.Split('.')[1],
ActivityModel = this,
Category = "Consumption"
});
}
else
{
foodRequestFound.Required += amountneeded;
foodRequestFound.AllowTransmutation = true;
}
}
}
}
// NOTE: proportions of purchased food are not modified if the sum does not add up to 1 or some of the food types are not available.
}
return(requests);
}
