private void TryCompleteProjects(Rocket rocket)
{
numCompletedProjectsNextTurn = 0;
foreach (Project project in projects)
{
// Figure out what resources still need to be launched.
IEnumerable <ResourceDelta> remainingCosts = from cost in project.Cost
let remaining = cost.Amount - ResourcesStorage.NextAmount(cost.Type)
where remaining > 0
select new ResourceDelta(cost.Type, remaining);
// If the rocket doesn't have room for all this, we can't complete this project
if (!rocket.TryAddCargo(remainingCosts))
{
break;
}
// This project will be completed this tick.
numCompletedProjectsNextTurn++;
// Its resources will be included in the rocket's cargo
// TODO and hopefully there's space in space for all of it!
if (!ResourcesStorage.TryAddDeltas(remainingCosts))
{
throw new Exception();
}
// And they'll be deducted from the storage after that
ResourcesStorage.TryAddDeltas(project.Cost.Select(cost => new ResourceDelta(cost.Type, -cost.Amount)));
}
}
public void TryAddRejectsAllDeltas()
{
var storages = new ResourcesStorage();
storages.TryAddDeltas(new[]
{
new ResourceDelta(ResourceType.Air, 20), new ResourceDelta(ResourceType.Air, -30),
new ResourceDelta(ResourceType.Food, 20)
});
Assert.AreEqual(0, storages.NextAmount(ResourceType.Air));
Assert.AreEqual(0, storages.NextAmount(ResourceType.Food));
}