#made by Govindas @ limework.net

import:
	com.comphenix.protocol.wrappers.EnumWrappers$ScoreboardAction
	net.minecraft.server.v1_12_R1.IScoreboardCriteria$EnumScoreboardHealthDisplay
	
#cache packets / reflection, so we can run code much faster
on script load:
	#remove scoreboard objective packet
	
	set {-scoreboard_objective_remove_packet} to new play_server_scoreboard_objective packet
	set int field 0 of {-scoreboard_objective_remove_packet} to 1 #1 means remove
		
	#create scoreboard objective packet

	set {-scoreboard_objective_create_packet} to new play_server_scoreboard_objective packet
	set int field 0 of {-scoreboard_objective_create_packet} to 0 #0 means create
	set {-scoreboard_objective_create_packet}.getHandle().c to EnumScoreboardHealthDisplay.INTEGER
	
	#update scoreboard objective packet

	set {-scoreboard_objective_update_packet} to new play_server_scoreboard_objective packet
	set int field 0 of {-scoreboard_objective_update_packet} to 2 #2 means update
	
	#set objective display slot
	#2 = below name
	#0 = sidebar
	
	set {-belowname_display_packet} to new play_server_scoreboard_display_objective packet
	set int field 0 of {-belowname_display_packet} to 2
	
	#set the number displayed
	
	set {-scoreboard_score_packet} to new play_server_scoreboard_score packet
	set ScoreboardAction field 0 of {-scoreboard_score_packet} to ScoreboardAction.CHANGE

effect set below[ ]name of %player/string% for %player% to %number% named %string%:
	trigger:
	
		#register scoreboard objective 
		if {-hpbelowpacket::%expression 2%} is not set:
			set {_packet} to {-scoreboard_objective_create_packet}
			
			#random scoreboard name to support bungeecord
			

			set {_uuid} to first 16 characters of random uuid
			
			set string field 0 of {_packet} to {_uuid}
			set string field 1 of {_packet} to expression 4 #text that is displayed below name
			
			send packet {_packet} to expression 2
			set {-hpbelowpacket::%expression 2%} to expression 4

			set {-hpbelowpacketid::%expression 2%} to {_uuid}

			
			#below name display packet, MUST be sent only once
			set {_packet} to {-belowname_display_packet} 
			set string field 0 of {_packet} to {-hpbelowpacketid::%expression 2%}
			send packet {_packet} to expression 2
			
		#update the name if objective already present
		
		else if {-hpbelowpacket::%expression 2%} is not expression 4:
			
			set {_packet} to {-scoreboard_objective_update_packet}
			set string field 0 of {_packet} to {-hpbelowpacketid::%expression 2%}
			set string field 1 of {_packet} to expression 4 #new text displayed below name

			send packet {_packet} to expression 2
			set {-hpbelowpacket::%expression 2%} to expression 4
		
		#set the number displayed
		
		set {_packet} to {-scoreboard_score_packet}
		set int field 0 of {_packet} to expression 3 #number
		set string field 0 of {_packet} to "%expression 1%" #player name
		set string field 1 of {_packet} to {-hpbelowpacketid::%expression 2%}
		send packet {_packet} to expression 2
		
effect (remove|reset|delete) below[ ]name for %player%:
	trigger:
		#removed this condition... as it was sometimes preventing legitimate reset, maybe sometimes it just needs to do it twice?)
		#{-hpbelowpacketid::%expression 1%} is set:
		#needed to re-create the display, to reset it easier
		#somehow without re-setting it before removing, it bugs out and doesn't let to remove it anymore without relog sometimes
		set {_id} to "%{-hpbelowpacketid::%expression 1%}%"
		wait 2 ticks
		{_id} is "%{-hpbelowpacketid::%expression 1%}%"
		set belowname of expression 1 for expression 1 to 0 named "reset"
		set {_packet} to {-scoreboard_objective_remove_packet}
		set string field 0 of {_packet} to {-hpbelowpacketid::%expression 1%}
		send packet {_packet} to expression 1

		delete {-hpbelowpacketid::%expression 1%} and {-hpbelowpacket::%expression 1%}
on quit:
	remove belowname for player
on player world change:
	{-hpbelowpacketid::%player%} is set:
		remove belowname for player