チャット/通信機/拡声器

on chat:
	cancel event
	set {_chat} to the chat message

	if player has iron horse armor:
		set {tuusin::%player%} to true
	else:
		set {tuusin::%player%} to false

	if player is holding a hopper:
		broadcast "&c[拡声] &r<???> %{_chat}%"
		stop
	if player is holding a iron horse armor:
		send "&b[通信] &r<???> %{_chat}%"
		stop
	loop all players in radius 4 around player:
		send "<???> %{_chat}%" to loop-player