private static void appendUpdateBlock(Player p, PacketBuilder updateBlock, bool forceAppearance) { int mask = 0x0; AppearanceUpdateFlags flags = p.getUpdateFlags(); if (flags.isChatTextUpdateRequired()) { mask |= 0x80; } if (flags.isHitUpdateRequired()) { mask |= 0x1; } if (flags.isEntityFocusUpdateRequired()) { mask |= 0x2; } if (flags.isAppearanceUpdateRequired() || forceAppearance) { mask |= 0x4; } if (flags.isAnimationUpdateRequired()) { mask |= 0x8; } if (flags.isForceTextUpdateRequired()) { mask |= 0x20; } if (flags.isFaceLocationUpdateRequired()) { mask |= 0x40; } if (flags.isGraphicsUpdateRequired()) { mask |= 0x100; } if (flags.isHit2UpdateRequired()) { mask |= 0x200; } if (flags.isForceMovementRequired()) { mask |= 0x400; //mask |= 0x800; } if (mask >= 0x100) //0x100=256 [full byte], so use two bytes. { mask |= 0x10; updateBlock.addLEShort(mask); //updateBlock.addByte((byte)(mask & 0xFF)); //updateBlock.addByte((byte)(mask >> 8)); } else { updateBlock.addByte((byte)(mask & 0xFF)); } if (flags.isChatTextUpdateRequired()) { appendChatTextUpdate(p, updateBlock); } if (flags.isHitUpdateRequired()) { appendHitUpdate(p, updateBlock); } if (flags.isAnimationUpdateRequired()) { appendAnimationUpdate(p, updateBlock); } if (flags.isAppearanceUpdateRequired() || forceAppearance) { appendAppearanceUpdate(p, updateBlock); } if (flags.isEntityFocusUpdateRequired()) { appendFaceEntityUpdate(p, updateBlock); } if (flags.isForceMovementRequired()) { appendForceMovement(p, updateBlock); } if (flags.isForceTextUpdateRequired()) { appendForceTextUpdate(p, updateBlock); } if (flags.isHit2UpdateRequired()) { appendHit2Update(p, updateBlock); } if (flags.isGraphicsUpdateRequired()) { appendGraphicsUpdate(p, updateBlock); } if (flags.isFaceLocationUpdateRequired()) { appendFaceLocationUpdate(p, updateBlock); } }