Java 类net.minecraftforge.fml.common.registry.IEntityAdditionalSpawnData 实例源码

@Override
void toBytes(ByteBuf buf)
{
    super.toBytes(buf);
    ByteBufUtils.writeUTF8String(buf, modId);
    buf.writeInt(modEntityTypeId);
    buf.writeLong(entity.getUniqueID().getMostSignificantBits());
    buf.writeLong(entity.getUniqueID().getLeastSignificantBits());
    // posX, posY, posZ
    buf.writeDouble(entity.posX);
    buf.writeDouble(entity.posY);
    buf.writeDouble(entity.posZ);
    // yaw, pitch
    buf.writeByte((byte)(entity.rotationYaw * 256.0F / 360.0F));
    buf.writeByte((byte) (entity.rotationPitch * 256.0F / 360.0F));
    // head yaw
    if (entity instanceof EntityLivingBase)
    {
        buf.writeByte((byte) (((EntityLivingBase)entity).rotationYawHead * 256.0F / 360.0F));
    }
    else
    {
        buf.writeByte(0);
    }
    ByteBuf tmpBuf = Unpooled.buffer();
    PacketBuffer pb = new PacketBuffer(tmpBuf);
    try
    {
        entity.getDataManager().writeEntries(pb);
    } catch (IOException e)
    {
        FMLLog.log(Level.FATAL,e,"Encountered fatal exception trying to send entity spawn data watchers");
        throw Throwables.propagate(e);
    }
    buf.writeBytes(tmpBuf);

    if (entity instanceof IThrowableEntity)
    {
        Entity owner = ((IThrowableEntity)entity).getThrower();
        buf.writeInt(owner == null ? entity.getEntityId() : owner.getEntityId());
        double maxVel = 3.9D;
        double mX = entity.motionX;
        double mY = entity.motionY;
        double mZ = entity.motionZ;
        if (mX < -maxVel) mX = -maxVel;
        if (mY < -maxVel) mY = -maxVel;
        if (mZ < -maxVel) mZ = -maxVel;
        if (mX >  maxVel) mX =  maxVel;
        if (mY >  maxVel) mY =  maxVel;
        if (mZ >  maxVel) mZ =  maxVel;
        buf.writeInt((int)(mX * 8000D));
        buf.writeInt((int)(mY * 8000D));
        buf.writeInt((int)(mZ * 8000D));
    }
    else
    {
        buf.writeInt(0);
    }
    if (entity instanceof IEntityAdditionalSpawnData)
    {
        tmpBuf = Unpooled.buffer();
        ((IEntityAdditionalSpawnData)entity).writeSpawnData(tmpBuf);
        buf.writeBytes(tmpBuf);
    }
}

private void spawnEntity(FMLMessage.EntitySpawnMessage spawnMsg)
{
    ModContainer mc = Loader.instance().getIndexedModList().get(spawnMsg.modId);
    EntityRegistration er = EntityRegistry.instance().lookupModSpawn(mc, spawnMsg.modEntityTypeId);
    if (er == null)
    {
        throw new RuntimeException( "Could not spawn mod entity ModID: " + spawnMsg.modId + " EntityID: " + spawnMsg.modEntityTypeId +
                " at ( " + spawnMsg.rawX + "," + spawnMsg.rawY + ", " + spawnMsg.rawZ + ") Please contact mod author or server admin.");
    }
    WorldClient wc = FMLClientHandler.instance().getWorldClient();
    Class<? extends Entity> cls = er.getEntityClass();
    try
    {
        Entity entity;
        if (er.hasCustomSpawning())
        {
            entity = er.doCustomSpawning(spawnMsg);
        } else
        {
            entity = cls.getConstructor(World.class).newInstance(wc);

            int offset = spawnMsg.entityId - entity.getEntityId();
            entity.setEntityId(spawnMsg.entityId);
            entity.setUniqueId(spawnMsg.entityUUID);
            entity.setLocationAndAngles(spawnMsg.rawX, spawnMsg.rawY, spawnMsg.rawZ, spawnMsg.scaledYaw, spawnMsg.scaledPitch);
            if (entity instanceof EntityLiving)
            {
                ((EntityLiving) entity).rotationYawHead = spawnMsg.scaledHeadYaw;
            }

            Entity parts[] = entity.getParts();
            if (parts != null)
            {
                for (int j = 0; j < parts.length; j++)
                {
                    parts[j].setEntityId(parts[j].getEntityId() + offset);
                }
            }
        }

        EntityTracker.updateServerPosition(entity, spawnMsg.rawX, spawnMsg.rawY, spawnMsg.rawZ);

        EntityPlayerSP clientPlayer = FMLClientHandler.instance().getClientPlayerEntity();
        if (entity instanceof IThrowableEntity)
        {
            Entity thrower = clientPlayer.getEntityId() == spawnMsg.throwerId ? clientPlayer : wc.getEntityByID(spawnMsg.throwerId);
            ((IThrowableEntity) entity).setThrower(thrower);
        }

        if (spawnMsg.dataWatcherList != null)
        {
            entity.getDataManager().setEntryValues(spawnMsg.dataWatcherList);
        }

        if (spawnMsg.throwerId > 0)
        {
            entity.setVelocity(spawnMsg.speedScaledX, spawnMsg.speedScaledY, spawnMsg.speedScaledZ);
        }

        if (entity instanceof IEntityAdditionalSpawnData)
        {
            ((IEntityAdditionalSpawnData) entity).readSpawnData(spawnMsg.dataStream);
        }
        wc.addEntityToWorld(spawnMsg.entityId, entity);
    } catch (Exception e)
    {
        FMLLog.log(Level.ERROR, e, "A severe problem occurred during the spawning of an entity at ( " + spawnMsg.rawX + "," + spawnMsg.rawY + ", " + spawnMsg.rawZ +")");
        throw Throwables.propagate(e);
    }
}