on jump:
	if {fall.%player%} is not set:
		set {fall.%player%} to 0
	{fall.%player%} is 0
	player has feather of Feather Falling named "&eダブルジャンプ" with lore "&eインベントリに入れて&aSHIFT"
	block below location of player is air
	push player upwards at speed 1
	push player horizontally forwards at speed 0.75
	set {fall.%player%} to 1
	while block below location of player is air:
		wait 3 ticks
	set {fall.%player%} to 0

on damage:
	victim has feather of Feather Falling
	damage was caused by fall
	cancel event