C++ AInventory::FindState方法代码示例

bool ATeleporterBeacon::Use (bool pickup)
{
	AInventory *drop;

	// [BC] This is handled server-side.
	if (( NETWORK_GetState( ) == NETSTATE_CLIENT ) ||
		( CLIENTDEMO_IsPlaying( )))
	{
		return ( true );
	}

	// Increase the amount by one so that when DropInventory decrements it,
	// the actor will have the same number of beacons that he started with.
	// When we return to UseInventory, it will take care of decrementing
	// Amount again and disposing of this item if there are no more.
	Amount++;
	drop = Owner->DropInventory (this);
	if (drop == NULL)
	{
		Amount--;
		return false;
	}
	else
	{
		drop->SetState(drop->FindState(NAME_Drop));
		drop->target = Owner;
		return true;
	}
}

bool ATeleporterBeacon::Use (bool pickup)
{
	AInventory *drop;

	// Increase the amount by one so that when DropInventory decrements it,
	// the actor will have the same number of beacons that he started with.
	// When we return to UseInventory, it will take care of decrementing
	// Amount again and disposing of this item if there are no more.
	Amount++;
	drop = Owner->DropInventory (this);
	if (drop == NULL)
	{
		Amount--;
		return false;
	}
	else
	{
		drop->SetState(drop->FindState(NAME_Drop));
		drop->target = Owner;
		return true;
	}
}

bool AInventory::TryPickup (AActor *&toucher)
{
	AActor *newtoucher = toucher; // in case changed by the powerup

	// If HandlePickup() returns true, it will set the IF_PICKUPGOOD flag
	// to indicate that this item has been picked up. If the item cannot be
	// picked up, then it leaves the flag cleared.

	ItemFlags &= ~IF_PICKUPGOOD;
	if (toucher->Inventory != NULL && toucher->Inventory->HandlePickup (this))
	{
		// Let something else the player is holding intercept the pickup.
		if (!(ItemFlags & IF_PICKUPGOOD))
		{
			return false;
		}
		ItemFlags &= ~IF_PICKUPGOOD;
		GoAwayAndDie ();
	}
	else if (MaxAmount == 0 && !IsKindOf(RUNTIME_CLASS(AAmmo)))
	{
		// Special case: If an item's MaxAmount is 0, you can still pick it
		// up if it is autoactivate-able.
		if (!(ItemFlags & IF_AUTOACTIVATE))
		{
			return false;
		}
		// The item is placed in the inventory just long enough to be used.
		toucher->AddInventory (this);
		bool usegood = Use (true);
		toucher->RemoveInventory (this);

		if (usegood)
		{
			GoAwayAndDie ();
		}
		else
		{
			return false;
		}
	}
	else
	{
		// Add the item to the inventory. It is not already there, or HandlePickup
		// would have already taken care of it.
		AInventory *copy = CreateCopy (toucher);
		if (copy == NULL)
		{
			return false;
		}
		// Some powerups cannot activate absolutely, for
		// example, PowerMorph; fail the pickup if so.
		if (copy->ItemFlags & IF_INITEFFECTFAILED)
		{
			if (copy != this) copy->Destroy();
			else ItemFlags &= ~IF_INITEFFECTFAILED;
			return false;
		}
		// Handle owner-changing powerups
		if (copy->ItemFlags & IF_CREATECOPYMOVED)
		{
			newtoucher = copy->Owner;
			copy->Owner = NULL;
			copy->ItemFlags &= ~IF_CREATECOPYMOVED;
		}
		// Continue onwards with the rest
		copy->AttachToOwner (newtoucher);
		if (ItemFlags & IF_AUTOACTIVATE)
		{
			if (copy->Use (true))
			{
				if (--copy->Amount <= 0)
				{
					copy->flags &= ~MF_SPECIAL;
					copy->SetState (copy->FindState("HoldAndDestroy"));
				}
			}
		}
	}
	return true;
}