/// <summary>
/// The method allows the activity to adjust resources requested based on shortfalls (e.g. labour) before they are taken from the pools
/// </summary>
public override void AdjustResourcesNeededForActivity()
{
// labour shortfall if any
double labourLimit = this.LabourLimitProportion;
overfeedProportion = 0;
// TODO: adjust if multiple animal food stores included in future.
// FirstOrDefault() is still known to be food store request. After this call it will be last in list with wasted and excess at start of list
ResourceRequest item = ResourceRequestList.Where(a => a.ResourceType == typeof(AnimalFoodStore)).FirstOrDefault();
if (item != null)
{
//add limits to amout collected based on labour shortfall
item.Required *= labourLimit;
// account for any wastage
// removed from food resource provided and then will be handled if required if less than provided in next section (DoActivity).
if (ProportionTramplingWastage > 0)
{
double wasted = Math.Min(item.Available, item.Required) * ProportionTramplingWastage;
if (wasted > 0)
{
ResourceRequest wastedRequest = new ResourceRequest()
{
AllowTransmutation = false,
Required = wasted,
Available = wasted,
ResourceType = typeof(AnimalFoodStore),
ResourceTypeName = item.ResourceTypeName,
ActivityModel = this,
Category = "Wastage",
RelatesToResource = this.PredictedHerdName
};
ResourceRequestList.Insert(0, wastedRequest);
item.Required -= wasted;
// adjust the food known available for the actual feed
item.Available -= wasted;
}
}
// report any excess fed above feed needed to fill animals itake (including potential multiplier if required for overfeeding)
double excess = 0;
if (Math.Min(item.Available, item.Required) >= feedToOverSatisfy)
{
excess = Math.Min(item.Available, item.Required) - feedToOverSatisfy;
if (feedToOverSatisfy > feedToSatisfy)
{
overfeedProportion = 1;
}
}
else if (feedToOverSatisfy > feedToSatisfy && Math.Min(item.Available, item.Required) > feedToSatisfy)
{
overfeedProportion = (Math.Min(item.Available, item.Required) - feedToSatisfy) / (feedToOverSatisfy - feedToSatisfy);
}
if (excess > 0)
{
ResourceRequest excessRequest = new ResourceRequest()
{
AllowTransmutation = false,
Required = excess,
Available = excess,
ResourceType = typeof(AnimalFoodStore),
ResourceTypeName = item.ResourceTypeName,
ActivityModel = this,
Category = "Overfed wastage",
RelatesToResource = this.PredictedHerdName
};
ResourceRequestList.Insert(0, excessRequest);
item.Required -= excess;
item.Available -= excess;
}
}
return;
}