Old Optimizations

• Detect chickens on hoppers and disable constant falling
• Entity: this.onGround = this.C && d8 < 0.0D; // kade edit this is shit
• Skip BoundingBox checks with lastInLavaResult && !blockPositionChanged
• Skip BoundingBox checks with lastInBlockResult blockPositionChanged
• EntityCreature - lastFindPath AI stuff
• EntityEnderman - antiBunker code + PathfinderGoalHurtByTarget - buker code public void e() {
  
• EntityExperienceOrb - disable Mending enchantment
• lastClimableBlockResult
• lastFrictionFactor, blockPositionChanged
• lastList, lastCollided
• Entityplayer - tick container Update Delay / this.activeContainer.b();
• EntityTrackerEntry - track - velocityChanged ( rocketboots mass spam fix)

            if (!cancelled) { // todo1.13
	            if (this.tracker instanceof EntityPlayer) { // kade edit rocketboots mass-spam fix
	                Player player = (Player) this.tracker.getBukkitEntity();
	                org.bukkit.inventory.ItemStack boots = player.getInventory().getBoots();
	                if(boots != null && boots.getType() == org.bukkit.Material.GOLDEN_BOOTS){
	                    if (this.tracker instanceof EntityPlayer) {
	                        ((EntityPlayer) this.tracker).playerConnection.sendPacket(new PacketPlayOutEntityVelocity(this.tracker));
	                    }
	                    cancelled = true; // fake cancelled to not broadcast two lines below
	                }
	            }
            }
            
            if (!cancelled) { 
                this.broadcastIncludingSelf(new PacketPlayOutEntityVelocity(this.tracker));
            }

• ItemSkullPlayer fixMobHeadTag
  // Mob-Head-Tag-Fixer kade, allow stacking and remove unneeded signature
  if(fixMobHeadTag(nbttagcompound)) return true; //kade
• Packet Spamming
  

  NetworkManager -  protected void a(ChannelHandlerContext channelhandlercontext, Packet<?> packet) throws Exception {
  
  
  	// kade edit: This prevents packet-spamming to lag the server todo1.13	
      public int lastPacketPlayInBlockPlace = 0; //kade 
      private long packetCount = 0;
      private long lastPacketTick = MinecraftServer.currentTick;
      protected void a(ChannelHandlerContext channelhandlercontext, Packet<?> packet) throws Exception {
  		ServerConnection.packetCount++; // kade
  		packetCount++; //kade
  
      	if(MinecraftServer.currentTick > lastPacketTick  + 40){ //kade
      		lastPacketTick = MinecraftServer.currentTick;
      		packetCount = 0;
      	}
      	
  
  //    	if(packet instanceof PacketPlayInCustomPayload) {
  //    		PacketPlayInCustomPayload pp = (PacketPlayInCustomPayload) packet;
  //    		System.out.println(pp);
  //    		System.out.println(pp.a());
  //    	}
      	
  		if (packetCount > 1000){ //kade
  			close(new ChatMessage("disconnect.spam", new Object[0]));
  			OutputHelper.error("Kicking player for packetSpam");
  			return;
  		}
  		
  		if (packet instanceof PacketPlayInBlockPlace) { // kade
  			lastPacketPlayInBlockPlace = 40;
  		}
  		if (lastPacketPlayInBlockPlace > 0) lastPacketPlayInBlockPlace--; // kade
  
          if (this.channel.isOpen()) {
              try {
                  a(packet, this.m);
              } catch (CancelledPacketHandleException cancelledpackethandleexception) {
                  ;
              }
  
              ++this.q;
          }
  
      }

• PlayerConnection - horse running
  

                  double movedWronglyThreshold = org.spigotmc.SpigotConfig.movedWronglyThreshold; //kade
                  if(!(entity instanceof EntityPlayer)){ //kade edit fixes buggy stairs-running with horses
                  	movedWronglyThreshold *= 1.5f;
                  }
                  
                  if (d10 > movedWronglyThreshold) { // Spigot
                      flag1 = true;
                      PlayerConnection.LOGGER.warn("{} moved wrongly!", entity.getDisplayName().getString());
                  }

• Limit Elytra speed to prevent mass chunk loading
  // if(distance > 1.30d){
  // this.player.motX *= 0.75d;
• Possibly limit enchantment levels again if bugged as in 1.9
  int level = getEnchantmentLevel(Enchantments.LURE, itemstack);
  if(level > 3) level = 3; // kade fix max fortune, luck, loot bonus 3 // 1.9
• Limit PathfinderGoalMeleeAttack lookups lastLocalPathEntityLookup (zombie hordes lag / villager targeting farm lag)