public static Task PurchaseAnimal(
[HttpTrigger(AuthorizationLevel.Anonymous, "POST", Route = "game/{gameName}/purchase-animal")] PurchaseAnimalCommand command,
[DurableClient] IDurableEntityClient client,
string gameName)
{
var transfer = new AnimalPurchase
{
AnimalName = command.AnimalName,
NewOwnerName = command.OwnerName
};
var entityId = new EntityId(nameof(GameSession), gameName);
return(client.SignalEntityAsync <IGameSession>(entityId, proxy => proxy.PurchaseAnimalAsync(transfer)));
}
public async Task PurchaseAnimalAsync(AnimalPurchase purchase)
{
var owner = PlayerStates[purchase.NewOwnerName];
var animal = AnimalStates[purchase.AnimalName];
if (animal?.OwnerName == null && animal?.Price <= owner?.Credits)
{
owner.Credits -= animal.Price;
animal.OwnerName = owner.Name;
await PublishEventAsync(new AnimalPurchasedEvent
{
AnimalName = purchase.AnimalName,
OwnerName = purchase.NewOwnerName
});
await PublishEventAsync(new CreditsChangedEvent
{
PlayerName = owner.Name,
Credits = owner.Credits
});
// Key of the animal behavior entity is:
// <GameName>:<AnimalName>:<OwnerName>
var entityKey = $"{Entity.Current.EntityKey}:{purchase.AnimalName}:{purchase.NewOwnerName}";
var entityId = new EntityId(nameof(AnimalBehavior), entityKey);
Entity.Current.SignalEntity <IAnimalBehavior>(entityId, proxy => proxy.Start());
}
else
{
await PublishEventAsync(new AnimalPurchaseFailedEvent
{
AnimalName = purchase.AnimalName,
OwnerName = purchase.NewOwnerName
});
}
}
