C++ AInventory类代码示例

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;
	}
}

AInventory *AAmmo::CreateCopy (AActor *other)
{
	AInventory *copy;
	int amount = Amount;

	// extra ammo in baby mode and nightmare mode
	if (!(ItemFlags&IF_IGNORESKILL))
	{
		amount = FixedMul(amount, G_SkillProperty(SKILLP_AmmoFactor));
	}

	if (GetClass()->ParentClass != RUNTIME_CLASS(AAmmo) && GetClass() != RUNTIME_CLASS(AAmmo))
	{
		const PClass *type = GetParentAmmo();
		assert (type->ActorInfo != NULL);
		if (!GoAway ())
		{
			Destroy ();
		}

		copy = static_cast<AInventory *>(Spawn (type, 0, 0, 0, NO_REPLACE));
		copy->Amount = amount;
		copy->BecomeItem ();
	}
	else
	{
		copy = Super::CreateCopy (other);
		copy->Amount = amount;
	}
	if (copy->Amount > copy->MaxAmount)
	{ // Don't pick up more ammo than you're supposed to be able to carry.
		copy->Amount = copy->MaxAmount;
	}
	return copy;
}

void G_StartTravel ()
{
	if (deathmatch)
		return;

	for (int i = 0; i < MAXPLAYERS; ++i)
	{
		if (playeringame[i])
		{
			AActor *pawn = players[i].mo;
			AInventory *inv;
			players[i].camera = NULL;

			// Only living players travel. Dead ones get a new body on the new level.
			if (players[i].health > 0)
			{
				pawn->UnlinkFromWorld ();
				P_DelSector_List ();
				int tid = pawn->tid;	// Save TID
				pawn->RemoveFromHash ();
				pawn->tid = tid;		// Restore TID (but no longer linked into the hash chain)
				pawn->ChangeStatNum (STAT_TRAVELLING);

				for (inv = pawn->Inventory; inv != NULL; inv = inv->Inventory)
				{
					inv->ChangeStatNum (STAT_TRAVELLING);
					inv->UnlinkFromWorld ();
					P_DelSector_List ();
				}
			}
		}
	}
}

static void DrawWeapons(player_t *CPlayer, int x, int y)
{
	int k,j;
	AInventory *inv;

	// First draw all weapons in the inventory that are not assigned to a weapon slot
	for(inv = CPlayer->mo->Inventory; inv; inv = inv->Inventory)
	{
		if (inv->IsKindOf(RUNTIME_CLASS(AWeapon)) && 
			!CPlayer->weapons.LocateWeapon(static_cast<AWeapon*>(inv)->GetClass(), NULL, NULL))
		{
			DrawOneWeapon(CPlayer, x, y, static_cast<AWeapon*>(inv));
		}
	}

	// And now everything in the weapon slots back to front
	for (k = NUM_WEAPON_SLOTS - 1; k >= 0; k--) for(j = CPlayer->weapons.Slots[k].Size() - 1; j >= 0; j--)
	{
		PClassActor *weap = CPlayer->weapons.Slots[k].GetWeapon(j);
		if (weap) 
		{
			inv=CPlayer->mo->FindInventory(weap);
			if (inv) 
			{
				DrawOneWeapon(CPlayer, x, y, static_cast<AWeapon*>(inv));
			}
		}
	}
}

void C_PrintInv(AActor *target)
{
	AInventory *item;
	int count = 0;

	if (target == NULL)
	{
		Printf("No target found!\n");
		return;
	}

	if (target->player)
		Printf("Inventory for Player '%s':\n", target->player->userinfo.GetName());
	else
		Printf("Inventory for Target '%s':\n", target->GetClass()->TypeName.GetChars());

	for (item = target->Inventory; item != NULL; item = item->Inventory)
	{
		Printf ("    %s #%u (%d/%d)\n", item->GetClass()->TypeName.GetChars(),
			item->InventoryID,
			item->Amount, item->MaxAmount);
		count++;
	}
	Printf ("  List count: %d\n", count);
}

static void TakeStrifeItem (const TypeInfo *itemtype, int amount)
{
	if (itemtype == NULL || amount == 0)
		return;

	// Don't take quest items.
	if (itemtype->IsDescendantOf (RUNTIME_CLASS(AQuestItem)))
		return;

	// Don't take keys
	if (itemtype->IsDescendantOf (RUNTIME_CLASS(AKey)))
		return;

	// Don't take the sigil
	if (itemtype == RUNTIME_CLASS(ASigil))
		return;

	AInventory *item = ConversationPC->FindInventory (itemtype);
	if (item != NULL)
	{
		item->Amount -= amount;
		if (item->Amount <= 0)
		{
			item->Destroy ();
		}
	}
}

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);
	}
}

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);
	}
}

	bool check(AActor *owner)
	{
		if (owner->IsKindOf(RUNTIME_CLASS(AKey)))
		{
			// P_GetMapColorForKey() checks the key directly
			return owner->IsA(key) || owner->GetSpecies() == key->TypeName;
		}
		else 
		{
			// Other calls check an actor that may have a key in its inventory.
			AInventory *item;

			for (item = owner->Inventory; item != NULL; item = item->Inventory)
			{
				if (item->IsA(key))
				{
					return true;
				}
				else if (item->GetSpecies() == key->TypeName)
				{
					return true;
				}
			}
			return false;
		}
	}

static void TakeStrifeItem (player_t *player, const PClass *itemtype, int amount)
{
	if (itemtype == NULL || amount == 0)
		return;

	// Don't take quest items.
	if (itemtype->IsDescendantOf (PClass::FindClass(NAME_QuestItem)))
		return;

	// Don't take keys.
	if (itemtype->IsDescendantOf (RUNTIME_CLASS(AKey)))
		return;

	// Don't take the sigil.
	if (itemtype == RUNTIME_CLASS(ASigil))
		return;

	AInventory *item = player->mo->FindInventory (itemtype);
	if (item != NULL)
	{
		item->Amount -= amount;
		if (item->Amount <= 0)
		{
			item->Destroy ();
		}
	}
}

void P_PlayerOnSpecialFlat (player_t *player, int floorType)
{
	if (Terrains[floorType].DamageAmount &&
		!(level.time & Terrains[floorType].DamageTimeMask))
	{
		AInventory *ironfeet = NULL;

		if (Terrains[floorType].AllowProtection)
		{
			for (ironfeet = player->mo->Inventory; ironfeet != NULL; ironfeet = ironfeet->Inventory)
			{
				if (ironfeet->IsKindOf (RUNTIME_CLASS(APowerIronFeet)))
					break;
			}
		}

		int damage = 0;
		if (ironfeet == NULL)
		{
			damage = P_DamageMobj (player->mo, NULL, NULL, Terrains[floorType].DamageAmount,
				Terrains[floorType].DamageMOD);
		}
		if (damage > 0 && Terrains[floorType].Splash != -1)
		{
			S_Sound (player->mo, CHAN_AUTO,
				Splashes[Terrains[floorType].Splash].NormalSplashSound, 1,
				ATTN_IDLE);
		}
	}
}

AInventory *AAmmo::CreateCopy (AActor *other)
{
	AInventory *copy;

	if (GetClass()->ParentType != RUNTIME_CLASS(AAmmo))
	{
		const TypeInfo *type = GetParentAmmo();
		if (!GoAway ())
		{
			Destroy ();
		}
		copy = static_cast<AInventory *>(Spawn (type, 0, 0, 0));
		copy->Amount = Amount;
		copy->BecomeItem ();
	}
	else
	{
		copy = Super::CreateCopy (other);
	}
	if (copy->Amount > copy->MaxAmount)
	{ // Don't pick up more ammo than you're supposed to be able to carry.
		copy->Amount = copy->MaxAmount;
	}
	return copy;
}

bool ABackpackItem::HandlePickup (AInventory *item)
{
    // Since you already have a backpack, that means you already have every
    // kind of ammo in your inventory, so we don't need to look at the
    // entire PClass list to discover what kinds of ammo exist, and we don't
    // have to alter the MaxAmount either.
    if (item->IsKindOf (RUNTIME_CLASS(ABackpackItem)))
    {
        for (AInventory *probe = Owner->Inventory; probe != NULL; probe = probe->Inventory)
        {
            if (probe->GetClass()->ParentClass == RUNTIME_CLASS(AAmmo))
            {
                if (probe->Amount < probe->MaxAmount || sv_unlimited_pickup)
                {
                    int amount = static_cast<AAmmo*>(probe->GetDefault())->BackpackAmount;
                    // extra ammo in baby mode and nightmare mode
                    if (!(item->ItemFlags&IF_IGNORESKILL))
                    {
                        amount = int(amount * G_SkillProperty(SKILLP_AmmoFactor));
                    }
                    probe->Amount += amount;
                    if (probe->Amount > probe->MaxAmount && !sv_unlimited_pickup)
                    {
                        probe->Amount = probe->MaxAmount;
                    }
                }
            }
        }
        // The pickup always succeeds, even if you didn't get anything
        item->ItemFlags |= IF_PICKUPGOOD;
        return true;
    }
    return false;
}

void AMinotaurFriend::Die (AActor *source, AActor *inflictor, int dmgflags)
{
    Super::Die (source, inflictor, dmgflags);

    if (tracer && tracer->health > 0 && tracer->player)
    {
        // Search thinker list for minotaur
        TThinkerIterator<AMinotaurFriend> iterator;
        AMinotaurFriend *mo;

        while ((mo = iterator.Next()) != NULL)
        {
            if (mo->health <= 0) continue;
            // [RH] Minotaurs can't be morphed, so this isn't needed
            //if (!(mo->flags&MF_COUNTKILL)) continue;		// for morphed minotaurs
            if (mo->flags&MF_CORPSE) continue;
            if (mo->StartTime >= 0 && (level.maptime - StartTime) >= MAULATORTICS) continue;
            if (mo->tracer != NULL && mo->tracer->player == tracer->player) break;
        }

        if (mo == NULL)
        {
            AInventory *power = tracer->FindInventory(PClass::FindActor("PowerMinotaur"));
            if (power != NULL)
            {
                power->Destroy ();
            }
        }
    }
}

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( ));
		}
	}
}