Zapobieganie strzelaniu

Mam tu oto taki kod

on leftclick:	if player is holding wooden hoe named "&4&lBeretta &f&l<%{beretta.minamo.%player%}%:%{beretta.maxamo.%player%}%>":		if {beretta.cooldown.%player%} is true:			if {beretta.minamo.%player%} is smaller than or equal to 0:				if {beretta.maxamo.%player%} is smaller than or equal to 0:					stop			shoot snowball			remove 1 from {beretta.minamo.%player%}			set name of player's tool to "&4&lBeretta &f&l<%{beretta.minamo.%player%}%:%{beretta.maxamo.%player%}%>"			set {beretta.cooldown.%player%} to false			wait 0.5 seconds			set {beretta.cooldown.%player%} to true			if {beretta.minamo.%player%} is 0:				remove 15 from {beretta.maxamo.%player%}				clear {beretta.minamo.%player%}				set name of player's tool to "&4&lBeretta &f&l<%{beretta.minamo.%player%}%:%{beretta.maxamo.%player%}%>"

I jak zapobiec gdy {beretta.minamo.%player%} i {beretta.maxamo.%player%} będzie na 0 to żeby nie strzelało i żeby podczas reloadu nie można było strzelac?