on any movement:
	if {level::%player%} is not set:
		set {level::%player%} to 1
	if {exp::%player%} is not set:
		set {exp::%player%} to 0
	if {needexp::%player%} is not set:
		set {needexp::%player%} to 30
	if {exp::%player%} >= {needexp::%player%}:
		set {exp::%player%} to 0
		add 1 to {level::%player%}
		set {needexp::%player%} to round(({level::%player%} + 1) * 1.5 + ({needexp::%player%}) * 1.05)
		message "&e========================="
		message "&a&lLevel Up!!"
		message "&a現在の&eレベル&8: &c&l%{level::%player%}%"
		message "&e========================="
		play entity_firework_blast at player with volume 1 and pitch 1
		play entity_firework_twinkle at player with volume 1 and pitch 1

loop 1 tick:
	loop all players:
		if loop-player has 1 nether star:
			remove 1 nether star from loop-player
			add 1 to {exp::%player%}
			play entity_experience_orb_pickup at player with volume 1 and pitch 1

every 1 seconds:
	loop all players:
		set action bar of loop-player to "&d%loop-player% &cLv.%{level::%loop-player%}% &8[&a%{exp::%loop-player%}%&9/&b%{needexp::%loop-player%}%&8]"