Dig upwards for papyrus and cactus

mods/default/functions.lua

@@ -266,6 +266,19 @@ minetest.register_abm({
 	end,
 })
 
+--
+-- dig upwards
+--
+
+function default.dig_up(pos, node, digger)
+	if digger == nil then return end
+	local np = {x = pos.x, y = pos.y + 1, z = pos.z}
+	local nn = minetest.get_node(np)
+	if nn.name == node.name then
+		minetest.node_dig(np, nn, digger)
+	end
+end
+
 --
 -- Leafdecay
 --