commit e0b1d39d78acee1730104e61796ee07d068af3ea
Author: Dominika <ja@sdomi.pl>
Date:   Wed Feb 9 03:58:56 2022 +0100

    + work so far

diff --git a/icon.png b/icon.png
new file mode 100644
index 0000000..4f8486a
Binary files /dev/null and b/icon.png differ
diff --git a/mc.sh b/mc.sh
new file mode 100755
index 0000000..7ccf544
--- /dev/null
+++ b/mc.sh
@@ -0,0 +1,241 @@
+#!/bin/bash
+state=''
+dyed=0
+keepalive=0
+pos=(0 0 0)
+players=()
+TEMP=/dev/shm/witchcraft/
+mkdir -p $TEMP $TEMP/players $TEMP/world
+
+source src/log.sh
+source src/int.sh
+source src/packet.sh
+source src/hooks.sh
+
+function keep_alive() {
+	while true; do
+		sleep 5
+		log "sending keepalive"
+		echo '092100000000000000ff' | xxd -p -r
+	done
+}
+
+function position_delta() {
+	local deltaX
+	local deltaY
+	local deltaZ
+
+#	pos[0]=0
+#	pos[1]=0
+#	pos[2]=0
+	pos_old[0]=0
+	pos_old[1]=0
+	pos_old[2]=0
+
+	while true; do
+		sleep 0.1
+		for i in $(ls "$TEMP/players/"); do
+			if [[ "$i" != "$nick" ]]; then
+				pos[0]=$(cat $TEMP/players/$i/position | awk -F, '{print($1)}') # idk, floating point broke
+				pos[1]=$(cat $TEMP/players/$i/position | awk -F, '{print($2)}')
+				pos[2]=$(cat $TEMP/players/$i/position | awk -F, '{print($3)}')
+				log "posX: ${pos[0]}"
+				deltaX=$((((${pos[0]}*32) - (${pos_old[0]}*32)) * 128))
+				deltaY=$(((${pos[1]}*32 - ${pos_old[1]}*32) * 128))
+				deltaZ=$(((${pos[2]}*32 - ${pos_old[2]}*32) * 128))
+
+				
+				if [[ $deltaX != 0 || $deltaY != 0 || $deltaZ != 0 ]]; then
+					pkt_position $deltaX $deltaY $deltaZ $(cat $TEMP/players/$i/eid)
+				fi
+				pos_old=("${pos[@]}")
+			fi
+		done
+	done
+}
+
+function handle_broadcast() {
+	while true; do
+		for i in $(ls "$TEMP/players/"); do
+			if [[ "$i" != "$nick" ]]; then
+				if [[ -f $TEMP/players/$i/broadcast ]]; then
+					packet="$(cat $TEMP/players/$i/broadcast)"
+					if [[ "$last" != "$packet" ]]; then
+						cat $TEMP/players/$i/broadcast
+						last="$packet"
+					fi
+				else
+					last=''
+				fi
+			fi
+		done
+		sleep 1
+	done
+}
+
+function spawn_players() {
+	for i in $(ls "$TEMP/players/"); do # fite me
+		if [[ $i != $nick && ${players[@]} != *"$i"* ]]; then
+			log "name: $i EID: $eid"
+			pkt_playerinfo_add $i $(cat $TEMP/players/$i/eid)
+			pkt_spawnplayer $(cat $TEMP/players/$i/eid)
+			players+=("$nick")
+		fi
+	done
+}
+
+while true; do
+	len=$(varint2int)
+	
+	a=$(dd count=$len bs=1 status=none | xxd -p)
+	if [[ "$a" == '' ]]; then
+		log "connection dyed"
+		pkill -P $$
+		pkt_chatmessage "- $nick" "00000000000000000000000000000000" > $TEMP/players/$nick/broadcast
+		sleep 1
+		rm -R "$TEMP/players/$nick"
+		exit
+	fi
+
+	if [[ -f /tmp/block ]]; then
+		res="$(encode_position 10 -10 10)"
+		res+="01"
+
+		log "$res"
+		echo -n "$(hexpacket_len "$res")0c$res" | xxd -p -r
+		rm -R /tmp/block
+	fi
+
+	if [[ -f /tmp/spawn ]]; then
+		spawn_players
+		rm /tmp/spawn
+	fi
+
+	if [[ $a == "00"* ]]; then
+		log "responding to 00; state: $state"
+
+		if [[ "$state" == '01' ]]; then
+			log "status response"
+
+			#json='{"version":{"name":"1.18.1","protocol":757},"players":{"max":100,"online":5,"sample":[{"name":"uwu","id":"4566e69f-c907-48ee-8d71-d7ba5aa00d20"}]},"description":{"text":"Hello world"}}'
+			json='{"version":{"name":"§a§kaaa§aUwU§kaaa","protocol":756},"players":{"max":1,"online":0,"sample":[]},"description":{"text":"§aUwU"},"favicon":"data:image/png;base64,'"$(base64 -w0 icon.png)"'"}'
+			res="$(str_len "$json")$(echo -n "$json" | xxd -p)"
+			echo "$(hexpacket_len "$res")00$res" | xxd -p -r
+
+			state=''
+		elif [[ "$state" == '02' ]]; then
+			nick=$(cut -c 5- <<< "$a" | xxd -p -r | grep -Poh '[A-Za-z0-9_-]*')
+			eid=$(printf "%02x" $RANDOM)
+			mkdir -p $TEMP/players/$nick
+			echo -n $eid > $TEMP/players/$nick/eid
+			pkt_chatmessage "+ $nick" "00000000000000000000000000000000" > $TEMP/players/$nick/broadcast
+			log "login response"
+			if [[ $keepalive == 0 ]]; then
+				hook_keepalive
+				keepalive=1
+			fi
+
+				# random uuid						string len		string (nick)
+			res="0000000000000000000000000000$eid$(str_len "$nick")$(echo -n "$nick" | xxd -p)"
+			log "$(hexpacket_len "$res")02$res"
+			echo -n "$(hexpacket_len "$res")02$res" | xxd -p -r
+
+			
+			res="$(encode_position 0 0 0)"
+			res+="00000000" # angle as float
+
+			echo -n "$(hexpacket_len "$res")4B$res" | xxd -p -r
+			log "sent spawn position"
+
+			#res="00000000" 			# entity id (0 or -2147483648, idk)
+			#res+="00" 				# not hardcore
+			#res+="00" 				# survival mode
+			#res+="01" 				# ... as previously seen on Creative Mode (ignored)
+			#res+="01" 				# one dimension
+			#res+="13$(echo -n "minecraft:overworld" | xxd -p)"
+			#res+="0a000000"				# dimension codec
+			#res+="0a000000"				# dimension
+			#res+="13$(echo -n "minecraft:overworld" | xxd -p)"	# dimension being spawned into
+			#res+="0000000000000000"	# beginning of sha256 of seed
+			#res+="0f"				# max players (ignored)
+			#res+="02"				# view distance (min 2 chunks)
+			#res+="02"				# simulation distance
+			#res+="00"				# reduced debug info? (false)
+			#res+="00"				# enable respawn screen
+			#res+="00"				# is debug (surprisingly, no)
+			#res+="01"				# is flat (yeah, sure)
+
+			#rhexlog "$(hexpacket_len "$res")26$res"
+			#echo -n "$(hexpacket_len "$res")26$res" | xxd -p -r
+			#log "sent join game"
+
+			cat nbt_
+			log "sent (hardcoded) join game"
+			
+			# send inventory (0x14)
+			res="00" # inventory id
+			res+="00" # state
+			res+="09" # item count
+			for i in {1..9}; do
+				res+="01 0$i 7f 00" # stone block
+			done
+			res+="01 00 01 00" # again, for held
+
+			echo -n "$(hexpacket_len "$res")14$res" | xxd -p -r
+			log "sent inventory"
+
+			pkt_pos
+
+			source src/palette.sh
+			
+			hook_chunks
+
+			spawn_players
+			
+			state=''
+		else
+			if [[ $a == *"01" ]]; then # 01 - next state: status
+				log 'set status'
+				state='01'
+			else # 02 - next state: login
+				log 'set login'
+				state='02'
+			fi
+		fi
+	elif [[ $a == "01"* ]]; then
+		log "responding to 01"
+		echo "$len$a" | xxd -p -r
+		log "bye"
+		exit
+	elif [[ $a == "0f"* ]]; then
+		log "received keepalive"
+		date "+%s" > $TEMP/players/$nick/ping
+	elif [[ $a == "11"* ]]; then
+		pos[0]=$(from_ieee754 $(cut -c 3-18 <<< "$a"))
+		pos[1]=$(from_ieee754 $(cut -c 19-34 <<< "$a"))
+		pos[2]=$(from_ieee754 $(cut -c 35-50 <<< "$a"))
+		echo "${pos[0]},${pos[1]},${pos[2]}" > $TEMP/players/$nick/position
+		hook_move
+	elif [[ $a == "12"* ]]; then
+		hook_move
+	elif [[ $a == "13"* ]]; then
+		hook_move
+	elif [[ $a == "1a"* ]]; then
+		hook_dig
+	elif [[ $a == "2c"* ]]; then
+		hook_swing
+	elif [[ $a == "2e"* ]]; then
+		hook_block
+	elif [[ $a == "03"* ]]; then
+		if [[ $((0x$(cut -c 3-4 <<< "$a"))) -lt 127 ]]; then # lazy varint check
+			msg=$(cut -c 5- <<< "$a" | xxd -p -r)
+		else
+			msg=$(cut -c 3- <<< "$a" | xxd -p -r)
+		fi
+		hook_chat		
+	else
+		log "unknown data from client"
+		rhexlog "$a"
+	fi
+	
+done
diff --git a/nbt_ b/nbt_
new file mode 100644
index 0000000..87d7a55
Binary files /dev/null and b/nbt_ differ
diff --git a/src/hooks.sh b/src/hooks.sh
new file mode 100644
index 0000000..5e3b72a
--- /dev/null
+++ b/src/hooks.sh
@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+# hooks.sh - dummy hooks functions
+
+# on player dig
+function hook_dig() {
+	log "received Player Dig"
+	rhexlog $a
+}
+
+# on player arm swing
+function hook_swing() {
+	log "received Arm Swing"
+}
+
+# on player block placement
+function hook_block() {
+	log "received Player Block Placement"
+	rhexlog $a
+}
+
+# on chat message
+# msg available as $msg
+function hook_chat() {
+	chatlog "$nick: $msg"
+	pkt_chatmessage "$nick: $msg" "0000000000000000000000000000$eid"
+	pkt_chatmessage "$nick: $msg" "0000000000000000000000000000$eid" > $TEMP/players/$nick/broadcast
+}
+
+# on move/move+rotation/rotation
+# X/Y/Z available as ${pos[0]} through ${pos[2]}
+function hook_move() {
+	log "received Player Position"
+}
+
+# after login, join; intended for loading chunks
+function hook_chunks() {
+	pkt_chunk FFFFFFFF FFFFFFFF 
+	pkt_chunk FFFFFFFF 00000000
+	pkt_chunk FFFFFFFF 00000001
+	
+	pkt_chunk 00000000 FFFFFFFF
+	pkt_chunk 00000000 00000000
+	pkt_chunk 00000000 00000001
+	
+	pkt_chunk 00000001 FFFFFFFF
+	pkt_chunk 00000001 00000000
+	pkt_chunk 00000001 00000001
+	
+	pkt_chunk FFFFFFFF 00000002
+	pkt_chunk 00000000 00000002
+	pkt_chunk 00000001 00000002
+}
+
+# during login; useful for disabling all multiplayer functionality
+function hook_keepalive() {
+	keep_alive &
+	# sleep probably only needed for testing
+	sleep 1 && position_delta &
+	sleep 1 && handle_broadcast &
+}
diff --git a/src/int.sh b/src/int.sh
new file mode 100644
index 0000000..378bb52
--- /dev/null
+++ b/src/int.sh
@@ -0,0 +1,144 @@
+#!/usr/bin/env bash
+# int.sh - int conversion functions, and other numeric functions
+
+# int2varint(int)
+function int2varint() {
+	# very proud of my implementation; haven't seen anyone use a modulo for this ;p
+	local a
+	local b
+	local c
+	local out
+	out=$(printf '%02x' "$1")
+	if [[ $1 -lt 128 ]]; then
+		:
+	elif [[ $1 -lt 16384 ]]; then
+		a=$(($1%128))
+		b=$(($1/128))
+		out=$(printf "%02x" $((a+128)))$(printf "%02x" $b)
+	elif [[ $1 -lt $((128*128*128)) ]]; then
+		a=$(($1%128))
+		c=$((($1/128)%128))
+		b=$(($1/16384))
+		out=$(printf "%02x" $((a+128)))$(printf "%02x" $((c+128)))$(printf "%02x" $b)
+	fi
+	echo -n "$out"
+}
+
+# varint2int() <<< varint
+function varint2int() {
+	local x
+	local uwu
+	local out
+	out=""
+	x=1	
+	while true; do
+		uwu=$(dd count=1 bs=1 status=none | xxd -p)
+	
+		out=$((out+((0x$uwu&127)*x)))
+		x=$((x*128))
+		if [[ $((0x$uwu>>7)) == 0 ]]; then
+			break
+		fi
+	done
+	echo -n "$out"
+}
+
+# parse_position(Position)
+# https://wiki.vg/Protocol#Position
+function parse_position() {
+	x=$((0x$1 >> 38))
+	y=$((0x$1 & 0xFFF))
+	z=$(((0x$1 >> 12) & 0x3FFFFFF))
+	
+	[[ $x -gt 33554431 ]] && x=$((x-67108864))
+	[[ $y -gt 2047 ]] && y=$((y-4095))
+	[[ $z -gt 33554431 ]] && z=$((z-67108864))
+}
+
+# encode_position(x, y, z)
+function encode_position() {
+	local x
+	local y
+	local z
+
+	x=$1
+	y=$2
+	z=$3
+
+	[[ $x -lt 33554433 ]] && x=$((x+67108864))
+	[[ $y -lt 2049 ]] && y=$((y+4095))
+	[[ $z -lt 33554433 ]] && z=$((z+67108864))
+	
+	printf "%016x" $((((x & 0x3FFFFFF)<<38) | ((z & 0x3FFFFFF)<<12) | (y & 0xFFF)))
+}
+
+# packet_len(packet)
+function packet_len() {
+	int2varint $((($(echo -n "$1" | wc -c)+1)))
+}
+
+# hexpacket_len(hexpacket)
+function hexpacket_len() {
+	int2varint $((($(echo -n "$1" | xxd -p -r | wc -c)+1)))
+}
+
+# str_len(string)
+function str_len() {
+	int2varint $(echo -n "$1" | wc -c)
+}
+
+# hexstrl_len(hexstring)
+function hexstr_len() {
+	int2varint $(echo -n "$1" | xxd -p -r | wc -c)
+}
+
+# hex2bin(hexstring)
+function hex2bin() {
+	# \o/
+	echo -n "$1" | sed -E 's/0/0000/g;s/1/0001/g;s/2/0010/g;s/3/0011/g;s/4/0100/g;s/5/0101/g;s/6/0110/g;s/7/0111/g;s/8/1000/g;s/9/1001/g;s/a/1010/g;s/b/1011/g;s/c/1100/g;s/d/1101/g;s/e/1110/g;s/f/1111/g'
+}
+
+# from_ieee754(hexstring)
+function from_ieee754() {
+	local sign
+	local exponent
+	local asdf
+	local exponent_
+	local val
+
+	val=$(hex2bin "$1")
+	sign=$(cut -c 1 <<< $val)
+	exponent=$(cut -c 2-12 <<< $val)
+	
+	asdf=$(cut -c 13- <<< $val | sed -E 's/./,&/g;s/,//' | tr -d '\n' | awk -F , \
+		'{
+			power_count=-1
+			x=0;
+			for(i=1; i<=NF; i++) {
+				x=(x + ($i * (2 ** power_count)))
+				power_count=power_count-1;
+			}
+			print(x+1)
+		}')
+
+	exponent_=$((2#$exponent))
+	
+	if [[ $sign == 0 ]]; then
+		echo "$asdf $exponent_" | awk '{print (int($1 * (2 ** ($2 - 1023))))}'
+	else
+		echo "$asdf $exponent_" | awk '{print -(int($1 * (2 ** ($2 - 1023))))}'
+	fi
+}
+
+# to_short(number) 
+function to_short() {
+	if [[ $1 -lt 0 && $1 -gt -32769 ]]; then
+		printf "%04x" $(($1+65536))
+	elif [[ $1 -lt 32768 && $1 -gt -1 ]]; then
+		printf "%04x" $1
+	elif [[ $1 -lt -32768 ]]; then
+		printf "8000"
+	elif [[ $1 -gt 32767 ]]; then
+		printf "7FFF"
+	fi
+}
diff --git a/src/log.sh b/src/log.sh
new file mode 100644
index 0000000..807c120
--- /dev/null
+++ b/src/log.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+# log.sh - logging functions
+
+function log() {
+	echo "[INFO] $@" >&2
+}
+function warn() {
+	echo "[WARN] $@" >&2	
+}
+function err() {
+	echo "[FAIL] $@" >&2		
+}
+function chatlog() {
+	echo "[CHAT] $@" >&2	
+}
+function hexlog() {
+	echo -n "$@" | xxd >&2	
+}
+function rhexlog() {
+	echo -n "$@" | xxd -p -r | xxd >&2		
+}
diff --git a/src/packet.sh b/src/packet.sh
new file mode 100644
index 0000000..6d2c0ce
--- /dev/null
+++ b/src/packet.sh
@@ -0,0 +1,189 @@
+#!/usr/bin/env bash
+# packet.sh - play state packets
+
+function pkt_pos() {
+		res="0000001000000000"	# X
+		res+="0000000000000000"	# Y
+		res+="0000000000000000"	# Z
+		res+="00000000"			# yaw
+		res+="00000000"			# pitch
+		res+="00"				# bit field; all absolute
+		res+="00"				# teleport id (?)
+		res+="00"				# dismount vehicle?
+
+		echo -n "$(hexpacket_len "$res")38$res" | xxd -p -r
+		log "sent player look and position"
+}
+
+function pkt_chunk() {
+	# palettes are really cool once you figure them out :3
+	# https://wiki.vg/Protocol#Chunk_Data_And_Update_Light
+	
+	local chunk
+
+	res="$1" # chunk X
+	res+="$2" # chunk Z
+
+	# here goes the scary NBT field
+	#     nbt tag       MOTION_BLOCKING                 len       light data for a superflat map
+	res+="0a00000c000f  4d4f54494f4e5f424c4f434b494e47  00000025  010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804010080402010080401008040201008040100804020100804  0000000020100804 00"
+
+	chunk="ffff" # amount of blocks, doesnt matter
+	chunk+="08"   # palette - bits per block
+	chunk+="$(int2varint ${#palette[@]})" # palette - entries amount
+
+	chunk+="${palette[@]}"
+	#res+="0f af0b 01 00"
+
+	chunk+="8002" # len of next array
+	l=$(echo -n "8002" | xxd -p -r | varint2int)
+
+	for (( i=0; i<$((l*8)); i++ )); do
+		chunk+="01" # third entry of palette
+	done
+
+	chunk+="0001" # biome palette
+	for i in {1..26}; do
+		chunk+="0000000000000001" # set biome
+	done
+
+	res+="$(int2varint $(hexstr_len "$chunk"))" # Data len
+	res+="$chunk" # Chunk data itself
+
+	res+="00 01 00 00 00 00 00 00" # empty bitsets and light arrays
+
+	echo -n "$(hexpacket_len "$res")22$res" | xxd -p -r
+	
+	log "sending chunk data"
+}
+
+# pkt_effect(x, y, z, effect_id)
+function pkt_effect() {
+	res="$(printf '%08x' $4)"
+	res+="$(encode_position $1 $2 $3)"
+	res+="00000000"
+	res+="00"
+	echo -n "$(hexpacket_len "$res")23$res" | xxd -p -r
+	log "sending effect"
+}
+
+# pkt_playerinfo(name, eid)
+function pkt_playerinfo_add() {
+	res="00" # add player
+	res+="01" # total players
+	res+="0000000000000000000000000000$2" # random UUID
+
+	res+="$(str_len "$1")$(echo -n "$1" | xxd -p)"
+	
+	res+="00" # array len; can be zero, but no skins then
+
+	res+="01" # gamemode: creative
+	res+="01" # ping: 1ms
+	res+="00" # has display name: false
+
+	echo -n "$(hexpacket_len "$res")36$res" | xxd -p -r
+	
+	log "sent playerinfo"
+}
+
+# pkt_spawnplayer(eid)
+function pkt_spawnplayer() {
+	res="$(int2varint $((0x$1)))" # entity id
+	res+="0000000000000000000000000000$1" # a really badly made UUID
+	res+="00 00 00 00 00 00 00 00" # X
+	res+="00 00 00 00 00 00 00 00" # Y
+	res+="00 00 00 00 00 00 00 00" # Z
+
+	res+="00" # Angle (256 steps)
+	res+="00" # Pitch (...)
+
+	echo -n "$(hexpacket_len "$res")04$res" | xxd -p -r
+	rhexlog "$(hexpacket_len "$res")04$res"
+	log "sent spawnplayer"
+}
+
+# pkt_position(deltaX, deltaY, deltaZ, eid)
+function pkt_position() {
+	local deltaX
+	local deltaY
+	local deltaZ
+	local stepX
+	local stepY
+	local stepZ
+	local n
+
+	deltaX=$1
+	deltaY=$2
+	deltaZ=$3
+	stepX=0
+	stepY=0
+	stepZ=0
+
+	while true; do
+		n=false
+		if [[ $deltaX -gt 32767 ]]; then
+			stepX=32767
+			deltaX=$((deltaX-32767))
+			n=true
+		fi
+		if [[ $deltaX -lt -32768 ]]; then
+			stepX=-32768
+			deltaX=$((deltaX+32768))
+			n=true
+		fi
+		if [[ $deltaY -gt 32767 ]]; then
+			stepY=32767
+			deltaY=$((deltaY-32767))
+			n=true			
+		fi
+		if [[ $deltaY -lt -32768 ]]; then
+			stepY=-32768
+			deltaY=$((deltaY+32768))
+			n=true
+		fi
+		if [[ $deltaZ -gt 32767 ]]; then
+			stepZ=32767
+			deltaX=$((deltaZ-32767))
+			n=true
+		fi
+		if [[ $deltaZ -lt -32768 ]]; then
+			stepZ=-32768
+			deltaZ=$((deltaZ+32768))
+			n=true
+		fi
+
+		[[ $n == false ]] && break
+
+		pkt_position $stepX $stepY $stepZ
+	done
+
+	res="$(int2varint $((0x$4)))" # entity ID
+	res+="$(to_short $deltaX)"
+	res+="$(to_short $deltaY)"
+	res+="$(to_short $deltaZ)" 
+	res+="00" # on ground
+	echo -n "$(hexpacket_len "$res")29$res" | xxd -p -r
+}
+
+# pkt_chatmessage(msg, sender_uuid)
+function pkt_chatmessage() {
+	local msg
+	local json
+	local res
+	
+	msg=$(sed -E 's/"//g;s@\\@@g' <<< "$1")
+	json='{"text":"'"$msg"'"}'
+	res="$(str_len "$json")$(echo -n "$json" | xxd -p)"
+	res+="00" # position: chat box
+	res+="$2"
+	
+	echo -n "$(hexpacket_len "$res")0F$res" | xxd -p -r	
+}
+
+# pkt_title(msg)
+function pkt_title() {
+	local txt
+	txt='{"text":"'"$1"'"}'
+	res="$(str_len "$txt")$(echo -n "$txt" | xxd -p)"
+	echo -n "$(hexpacket_len "$res")5a$res" | xxd -p -r
+}
diff --git a/src/palette.sh b/src/palette.sh
new file mode 100644
index 0000000..8826015
--- /dev/null
+++ b/src/palette.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+# palette.sh - up to 255 block definitions
+# maps first 32 IDs to pre-flattening IDs, just for fun; rest is rather random
+# empty blocks (00) is what I can't easily implement :(
+# https://minecraft.fandom.com/wiki/Java_Edition_data_values/Pre-flattening/Block_IDs
+
+palette=()
+
+palette+=("00") # air
+palette+=("01") # stone
+palette+=("09") # grass
+palette+=("0a") # dirt
+palette+=("0e") # cobblestone
+palette+=("0f") # planks
+palette+=("15") # sapling
+palette+=("21") # bedrock
+palette+=("00") #
+palette+=("31") # water
+palette+=("00") #
+palette+=("41") # lava
+palette+=("42") # sand
+palette+=("44") # gravel
+palette+=("45") # gold ore
+palette+=("47") # iron ore
+
+palette+=("49") # coal ore
+palette+=("4d") # wood
+palette+=("9401") # leaves
+palette+=("8402") # sponge
+palette+=("8602") # glass
+palette+=("8702") # lapis ore
+palette+=("8902")
+palette+=("00") #
+palette+=("9602") # sandstone
+palette+=("00") #
+palette+=("00") #
+palette+=("00") #
+palette+=("00") #
+palette+=("00") #
+palette+=("f60a") # grass