function removeItem(Inventory, Material, Amount)
    local Contents = Inventory:getContents()
	for i = 0, Contents.length do
		local Item = Contents[i]
		if Item and Item:getType():equals(Material) then
			local Remove = Item:getAmount() - Amount
			if Remove <= 0 then
				Contents[i] = nil
				Inventory:setContents(Contents)
				break
			else
				Item:setAmount(Remove)
				break
			end
		end
	end
end

function getPosition(Entity)
	local Location = Entity:getLocation()
	return Location:getX(), Location:getY(), Location:getZ()
end

events.add("projectileHit",
	function(Event)
		local Projectile = Event:getEntity()
		local World = Projectile:getWorld()
		local X, Y, Z = getPosition(Projectile)
		World:createExplosion(X, Y, Z, 0.5, false, false)
	end
)

events.add("playerInteract",
	function(Event)
		local Player = Event:getPlayer()
		local Inventory = Player:getInventory()

		if Player:getItemInHand():getType() == material.DIAMOND_HOE and Inventory:contains(material.SNOW_BALL) then
			Player:launchProjectile(luajava.bindClass("org.bukkit.entity.Snowball"))
			removeItem(Inventory, material.SNOW_BALL, 1)
			Player:updateInventory()
		end
	end
)