C++ AInventory::CallTryPickup方法代码示例

DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_GiveQuestItem)
{
	ACTION_PARAM_START(1);
	ACTION_PARAM_INT(questitem, 0);

	// Give one of these quest items to every player in the game
	for (int i = 0; i < MAXPLAYERS; ++i)
	{
		if (playeringame[i])
		{
			AInventory *item = static_cast<AInventory *>(Spawn (QuestItemClasses[questitem-1], 0,0,0, NO_REPLACE));
			if (!item->CallTryPickup (players[i].mo))
			{
				item->Destroy ();
			}
		}
	}

	char messageid[64];

	mysnprintf(messageid, countof(messageid), "TXT_QUEST_%d", questitem);
	const char * name = GStrings[messageid];

	if (name != NULL)
	{
		C_MidPrint (SmallFont, name);
	}
}

DEFINE_ACTION_FUNCTION(AActor, A_Summon)
{
	AMinotaurFriend *mo;

	mo = Spawn<AMinotaurFriend> (self->Pos(), ALLOW_REPLACE);
	if (mo)
	{
		if (P_TestMobjLocation(mo) == false || !self->tracer)
		{ // Didn't fit - change back to artifact
			mo->Destroy ();
			AActor *arti = Spawn<AArtiDarkServant> (self->Pos(), ALLOW_REPLACE);
			if (arti) arti->flags |= MF_DROPPED;
			return;
		}

		mo->StartTime = level.maptime;
		if (self->tracer->flags & MF_CORPSE)
		{	// Master dead
			mo->tracer = NULL;		// No master
		}
		else
		{
			mo->tracer = self->tracer;		// Pointer to master
			AInventory *power = Spawn<APowerMinotaur> (0, 0, 0, NO_REPLACE);
			power->CallTryPickup (self->tracer);
			mo->SetFriendPlayer(self->tracer->player);
		}

		// Make smoke puff
		Spawn ("MinotaurSmoke", self->Pos(), ALLOW_REPLACE);
		S_Sound (self, CHAN_VOICE, mo->ActiveSound, 1, ATTN_NORM);
	}
}

void GiveSpawner (player_t *player, const PClass *type, int amount)
{
	if (player->mo == NULL || player->health <= 0)
	{
		return;
	}

	AInventory *item = static_cast<AInventory *>
		(Spawn (type, player->mo->x, player->mo->y, player->mo->z, NO_REPLACE));
	if (item != NULL)
	{
		if (amount > 0)
		{
			if (type->IsDescendantOf (RUNTIME_CLASS(ABasicArmorPickup)))
			{
				if (static_cast<ABasicArmorPickup*>(item)->SaveAmount != 0)
				{
					static_cast<ABasicArmorPickup*>(item)->SaveAmount *= amount;
				}
				else
				{
					static_cast<ABasicArmorPickup*>(item)->SaveAmount *= amount;
				}
			}
			else if (type->IsDescendantOf (RUNTIME_CLASS(ABasicArmorBonus)))
			{
				static_cast<ABasicArmorBonus*>(item)->SaveAmount *= amount;
				// [BB]
				static_cast<ABasicArmorBonus*>(item)->BonusCount *= amount;

			}
			else
			{
				item->Amount = MIN (amount, item->MaxAmount);
			}
		}
		if(item->flags & MF_COUNTITEM) // Given items shouldn't count against the map's total,
		{								// since they aren't added to the player's total.
			level.total_items--;
			item->flags &= ~MF_COUNTITEM;
		} 
		if (!item->CallTryPickup (player->mo))
		{
			item->Destroy ();
		}
		else
		{
			// [BB] This construction is more or less a hack, but at least the give cheats are now working.
			SERVER_GiveInventoryToPlayer( player, item );
			// [BC] Play the announcer sound.
			if ( players[consoleplayer].camera == players[consoleplayer].mo && cl_announcepickups )
				ANNOUNCER_PlayEntry( cl_announcer, item->PickupAnnouncerEntry( ));
		}
	}
}

bool AInventory::CallTryPickup (AActor *toucher, AActor **toucher_return)
{
	TObjPtr<AInventory> Invstack = Inventory; // A pointer of the inventories item stack.

	// unmorphed versions of a currently morphed actor cannot pick up anything. 
	if (toucher->flags & MF_UNMORPHED) return false;

	bool res;
	if (CanPickup(toucher))
		res = TryPickup(toucher);
	else if (!(ItemFlags & IF_RESTRICTABSOLUTELY))
		res = TryPickupRestricted(toucher);	// let an item decide for itself how it will handle this
	else
		return false;

	// Morph items can change the toucher so we need an option to return this info.
	if (toucher_return != NULL) *toucher_return = toucher;

	if (!res && (ItemFlags & IF_ALWAYSPICKUP) && !ShouldStay())
	{
		res = true;
		GoAwayAndDie();
	}

	if (res)
	{
		GiveQuest(toucher);

		// Transfer all inventory accross that the old object had, if requested.
		if ((ItemFlags & IF_TRANSFER))
		{
			while (Invstack)
			{
				AInventory* titem = Invstack;
				Invstack = titem->Inventory;
				if (titem->Owner == this)
				{
					if (!titem->CallTryPickup(toucher)) // The object no longer can exist
					{
						titem->Destroy();
					}
				}
			}
		}
	}
	return res;
}

bool AHealthTraining::TryPickup (AActor *&toucher)
{
    if (Super::TryPickup (toucher))
    {
        toucher->GiveInventoryType (PClass::FindActor("GunTraining"));
        AInventory *coin = Spawn<ACoin> ();
        if (coin != NULL)
        {
            coin->Amount = toucher->player->mo->accuracy*5 + 300;
            if (!coin->CallTryPickup (toucher))
            {
                coin->Destroy ();
            }
        }
        return true;
    }
    return false;
}

void GiveSpawner (player_t *player, PClassInventory *type, int amount)
{
	if (player->mo == NULL || player->health <= 0)
	{
		return;
	}

	AInventory *item = static_cast<AInventory *>
		(Spawn (type, player->mo->Pos(), NO_REPLACE));
	if (item != NULL)
	{
		if (amount > 0)
		{
			if (type->IsDescendantOf (RUNTIME_CLASS(ABasicArmorPickup)))
			{
				if (static_cast<ABasicArmorPickup*>(item)->SaveAmount != 0)
				{
					static_cast<ABasicArmorPickup*>(item)->SaveAmount *= amount;
				}
				else
				{
					static_cast<ABasicArmorPickup*>(item)->SaveAmount *= amount;
				}
			}
			else if (type->IsDescendantOf (RUNTIME_CLASS(ABasicArmorBonus)))
			{
				static_cast<ABasicArmorBonus*>(item)->SaveAmount *= amount;
			}
			else
			{
				item->Amount = MIN (amount, item->MaxAmount);
			}
		}
		item->ClearCounters();
		if (!item->CallTryPickup (player->mo))
		{
			item->Destroy ();
		}
	}
}