musttest_game/mods/scaffolding/functions.lua

local scaffolding_nodenames={"scaffolding:scaffolding","scaffolding:iron_scaffolding"}

minetest.register_on_dignode(function(pos, node)
	local i=1
	while scaffolding_nodenames[i]~=nil do
		if node.name==scaffolding_nodenames[i] then
			local np={x=pos.x, y=pos.y+1, z=pos.z}
			while minetest.env:get_node(np).name==scaffolding_nodenames[i] do
				minetest.env:remove_node(np)
				minetest.env:add_item(np, scaffolding_nodenames[i])
				np={x=np.x, y=np.y+1, z=np.z}
			end
		end
		i=i+1
	end
end)

local iron_scaffolding_nodenames={"scaffolding:platform","scaffolding:iron_platform"}

minetest.register_on_dignode(function(pos, node)
	local i=1
	while iron_scaffolding_nodenames[i]~=nil do
		if node.name==iron_scaffolding_nodenames[i] then
			local np={x=pos.x, y=pos.y, z=pos.z+1}
			while minetest.env:get_node(np).name==iron_scaffolding_nodenames[i] do
				minetest.env:remove_node(np)
				minetest.env:add_item(np, iron_scaffolding_nodenames[i])
				np={x=np.x, y=np.y, z=np.z+1}
			end
		end
		i=i+1
	end
end)

minetest.register_on_dignode(function(pos, node)
	local i=1
	while iron_scaffolding_nodenames[i]~=nil do
		if node.name==iron_scaffolding_nodenames[i] then
			local np={x=pos.x, y=pos.y, z=pos.z-1}
			while minetest.env:get_node(np).name==iron_scaffolding_nodenames[i] do
				minetest.env:remove_node(np)
				minetest.env:add_item(np, iron_scaffolding_nodenames[i])
				np={x=np.x, y=np.y, z=np.z-1}
			end
		end
		i=i-1
	end
end)

minetest.register_on_dignode(function(pos, node)
	local i=1
	while iron_scaffolding_nodenames[i]~=nil do
		if node.name==iron_scaffolding_nodenames[i] then
			local np={x=pos.x+1, y=pos.y, z=pos.z}
			while minetest.env:get_node(np).name==iron_scaffolding_nodenames[i] do
				minetest.env:remove_node(np)
				minetest.env:add_item(np, iron_scaffolding_nodenames[i])
				np={x=np.x+1, y=np.y, z=np.z}
			end
		end
		i=i+1
	end
end)

minetest.register_on_dignode(function(pos, node)
	local i=1
	while iron_scaffolding_nodenames[i]~=nil do
		if node.name==iron_scaffolding_nodenames[i] then
			local np={x=pos.x-1, y=pos.y, z=pos.z}
			while minetest.env:get_node(np).name==iron_scaffolding_nodenames[i] do
				minetest.env:remove_node(np)
				minetest.env:add_item(np, iron_scaffolding_nodenames[i])
				np={x=np.x-1, y=np.y, z=np.z}
			end
		end
		i=i-1
	end
end)

-- falling nodes go into pocket --

function scaffolding.dig_horx(pos, node, digger)
	if digger == nil then return end
		local np = {x = pos.x + 1, y = pos.y, z = pos.z,}
		local nn = minetest.get_node(np)
	if nn.name == node.name then
		minetest.node_dig(np, nn, digger)
	end
end

function scaffolding.dig_horx2(pos, node, digger)
	if digger == nil then return end
		local np = {x = pos.x - 1, y = pos.y, z = pos.z,}
		local nn = minetest.get_node(np)
	if nn.name == node.name then
		minetest.node_dig(np, nn, digger)
	end
end

function scaffolding.dig_horz(pos, node, digger)
	if digger == nil then return end
		local np = {x = pos.x, y = pos.y, z = pos.z + 1,}
		local nn = minetest.get_node(np)
	if nn.name == node.name then
		minetest.node_dig(np, nn, digger)
	end
end

function scaffolding.dig_horz2(pos, node, digger)
	if digger == nil then return end
		local np = {x = pos.x , y = pos.y, z = pos.z - 1,}
		local nn = minetest.get_node(np)
	if nn.name == node.name then
		minetest.node_dig(np, nn, digger)
	end
end