net message 23

case 23:
                {
                    NPC nPC = Main.npc[number];
                    writer.Write((short)number);
                    writer.WriteVector2(nPC.position);
                    writer.WriteVector2(nPC.velocity);
                    writer.Write((ushort)nPC.target);
                    int num9 = nPC.life;
                    if (!nPC.active)
                    {
                        num9 = 0;
                    }
                    if (!nPC.active || nPC.life <= 0)
                    {
                        nPC.netSkip = 0;
                    }
                    short value2 = (short)nPC.netID;
                    bool[] array = new bool[4];
                    BitsByte bb13 = 0;
                    bb13[0] = (nPC.direction > 0);
                    bb13[1] = (nPC.directionY > 0);
                    bb13[2] = (array[0] = (nPC.ai[0] != 0f));
                    bb13[3] = (array[1] = (nPC.ai[1] != 0f));
                    bb13[4] = (array[2] = (nPC.ai[2] != 0f));
                    bb13[5] = (array[3] = (nPC.ai[3] != 0f));
                    bb13[6] = (nPC.spriteDirection > 0);
                    bb13[7] = (num9 == nPC.lifeMax);
                    writer.Write(bb13);
                    for (int num10 = 0; num10 < NPC.maxAI; num10++)
                    {
                        if (array[num10])
                        {
                            writer.Write(nPC.ai[num10]);
                        }
                    }
                    writer.Write(value2);
                    if (!bb13[7])
                    {
                        byte b3 = Main.npcLifeBytes[nPC.netID];
                        writer.Write(b3);
                        if (b3 == 2)
                        {
                            writer.Write((short)num9);
                        }
                        else if (b3 == 4)
                        {
                            writer.Write(num9);
                        }
                        else
                        {
                            writer.Write((sbyte)num9);
                        }
                    }
                    if (nPC.type >= 0 && nPC.type < 580 && Main.npcCatchable[nPC.type])
                    {
                        writer.Write((byte)nPC.releaseOwner);
                    }
                    break;
                }