From: Zefram <zefram@fysh.org>
Date: Tue, 22 Jul 2014 14:33:16 +0000 (+0100)
Subject: Refactor deployer and dispenser
X-Git-Url: http://81.2.79.47:8989/gitweb/?a=commitdiff_plain;h=46d44eebcf9bb148cea505fcb4f25a97efcd6368;p=zefram%2Fminetest%2Fpipeworks.git

Refactor deployer and dispenser

Merge implementations into a single "wielder" mechanism.  Clean up the
code a bit.  Fix get_player_control_bits for the dispenser (it wasn't
indicating the sneak setting).  Fix drops for dispenser (dispenser_on was
dropping as itself).  Show item image, as well as name, at head of form.
---

diff --git a/deployer.lua b/deployer.lua
deleted file mode 100644
index 360a0c5..0000000
--- a/deployer.lua
+++ /dev/null
@@ -1,289 +0,0 @@
-
---register aliases for when someone had technic installed, but then uninstalled it but not pipeworks
-minetest.register_alias("technic:deployer_off", "pipeworks:deployer_off")
-minetest.register_alias("technic:deployer_on", "pipeworks:deployer_on")
-
-minetest.register_craft({
-	output = 'pipeworks:deployer_off 1',
-	recipe = {
-		{'group:wood', 'default:chest','group:wood'},
-		{'default:stone', 'mesecons:piston','default:stone'},
-		{'default:stone', 'mesecons:mesecon','default:stone'},
-	}
-})
-
-local function swap_node(pos, name)
-    local node = minetest.get_node(pos)
-    if node.name == name then
-        return
-    end
-    node.name = name
-    minetest.swap_node(pos, node)
-end
-
-local function delay(x)
-	return (function() return x end)
-end
-
-local function deployer_on(pos, node)
-	if node.name ~= "pipeworks:deployer_off" then
-		return
-	end
-	
-	--locate the above and under positions
-	local dir = minetest.facedir_to_dir(node.param2)
-	local pos_under, pos_above = {x = pos.x - dir.x, y = pos.y - dir.y, z = pos.z - dir.z}, {x = pos.x - 2*dir.x, y = pos.y - 2*dir.y, z = pos.z - 2*dir.z}
-	
-	swap_node(pos, "pipeworks:deployer_on")
-	nodeupdate(pos)
-	
-	local meta = minetest.get_meta(pos)
-	local inv = meta:get_inventory()
-	local invlist = inv:get_list("main")
-	for i, stack in ipairs(invlist) do
-		if stack:get_name() ~= nil and stack:get_name() ~= "" then--and minetest.get_node(pos_under).name == "air" then --obtain the first non-empty item slot
-			local pitch
-			local yaw
-			if dir.z < 0 then
-				yaw = 0
-				pitch = 0
-			elseif dir.z > 0 then
-				yaw = math.pi
-				pitch = 0
-			elseif dir.x < 0 then
-				yaw = 3*math.pi/2
-				pitch = 0
-			elseif dir.x > 0 then
-				yaw = math.pi/2
-				pitch = 0
-			elseif dir.y > 0 then
-				yaw = 0
-				pitch = -math.pi/2
-			else
-				yaw = 0
-				pitch = math.pi/2
-			end
-			local placer = {
-				get_inventory_formspec = delay(meta:get_string("formspec")),
-				get_look_dir = delay({x = -dir.x, y = -dir.y, z = -dir.z}),
-				get_look_pitch = delay(pitch),
-				get_look_yaw = delay(yaw),
-				get_player_control = delay({jump=false, right=false, left=false, LMB=false, RMB=false, sneak=false, aux1=false, down=false, up=false}),
-				get_player_control_bits = delay(0),
-				get_player_name = delay(meta:get_string("owner")),
-				is_player = delay(true),
-				is_fake_player = true,
-				set_inventory_formspec = delay(),
-				getpos = delay({x = pos.x, y = pos.y - 1.5, z = pos.z}), -- Player height
-				get_hp = delay(20),
-				get_inventory = delay(inv),
-				get_wielded_item = delay(stack),
-				get_wield_index = delay(i),
-				get_wield_list = delay("main"),
-				moveto = delay(),
-				punch = delay(),
-				remove = delay(),
-				right_click = delay(),
-				setpos = delay(),
-				set_hp = delay(),
-				set_properties = delay(),
-				set_wielded_item = function(self, item) inv:set_stack("main", i, item) end,
-				set_animation = delay(),
-				set_attach = delay(),
-				set_detach = delay(),
-				set_bone_position = delay(),
-			}
-			local pointed_thing = {type="node", under=pos_under, above=pos_above}
-			local stack2
-			if minetest.registered_items[stack:get_name()] then
-				stack2 = minetest.registered_items[stack:get_name()].on_place(stack, placer, pointed_thing) or stack
-			end
-			--if minetest.setting_getbool("creative_mode") and not minetest.get_modpath("unified_inventory") then --infinite stacks ahoy!
-			--	stack2:take_item()
-			--end
-			inv:set_stack("main", i, stack2)
-			return
-		end
-	end
-end
-
-local deployer_off = function(pos, node)
-	if node.name == "pipeworks:deployer_on" then
-		swap_node(pos, "pipeworks:deployer_off")
-		nodeupdate(pos)
-	end
-end
-
-minetest.register_node("pipeworks:deployer_off", {
-	description = "Deployer",
-	tile_images = {"pipeworks_deployer_top.png","pipeworks_deployer_bottom.png","pipeworks_deployer_side2.png","pipeworks_deployer_side1.png",
-			"pipeworks_deployer_back.png","pipeworks_deployer_front_off.png"},
-	mesecons = {effector={rules=pipeworks.rules_all,action_on=deployer_on,action_off=deployer_off}},
-	tube={insert_object=function(pos,node,stack,direction)
-			local meta=minetest.get_meta(pos)
-			local inv=meta:get_inventory()
-			return inv:add_item("main",stack)
-		end,
-		can_insert=function(pos,node,stack,direction)
-			local meta=minetest.get_meta(pos)
-			local inv=meta:get_inventory()
-			return inv:room_for_item("main",stack)
-		end,
-		input_inventory="main",
-		connect_sides={back=1},
-		can_remove = function(pos, node, stack, dir)
-			return stack:get_count()
-		end},
-	is_ground_content = true,
-	paramtype2 = "facedir",
-	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2, mesecon = 2,tubedevice=1, tubedevice_receiver=1},
-	sounds = default.node_sound_stone_defaults(),
-	on_construct = function(pos)
-		local meta = minetest.get_meta(pos)
-		meta:set_string("formspec",
-				"invsize[8,9;]"..
-				"label[0,0;Deployer]"..
-				"list[current_name;main;4,1;3,3;]"..
-				"list[current_player;main;0,5;8,4;]")
-		meta:set_string("infotext", "Deployer")
-		local inv = meta:get_inventory()
-		inv:set_size("main", 3*3)
-	end,
-	can_dig = function(pos,player)
-		local meta = minetest.get_meta(pos);
-		local inv = meta:get_inventory()
-		return inv:is_empty("main")
-	end,
-	after_place_node = function (pos, placer)
-		pipeworks.scan_for_tube_objects(pos, placer)
-		local placer_pos = placer:getpos()
-		
-		--correct for the player's height
-		if placer:is_player() then placer_pos.y = placer_pos.y + 1.5 end
-		
-		--correct for 6d facedir
-		if placer_pos then
-			local dir = {
-				x = pos.x - placer_pos.x,
-				y = pos.y - placer_pos.y,
-				z = pos.z - placer_pos.z
-			}
-			local node = minetest.get_node(pos)
-			node.param2 = minetest.dir_to_facedir(dir, true)
-			minetest.set_node(pos, node)
-			minetest.log("action", "real (6d) facedir: " .. node.param2)
-		end
-		
-		minetest.get_meta(pos):set_string("owner", placer:get_player_name())
-	end,
-	after_dig_node = pipeworks.scan_for_tube_objects,
-	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
-		local meta = minetest.get_meta(pos)
-		if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
-			return 0
-		end
-		return count
-	end,
-	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
-		local meta = minetest.get_meta(pos)
-		if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
-			return 0
-		end
-		return stack:get_count()
-	end,
-	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
-		local meta = minetest.get_meta(pos)
-		if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
-			return 0
-		end
-		return stack:get_count()
-	end
-})
-
-minetest.register_node("pipeworks:deployer_on", {
-	description = "Deployer",
-	tile_images = {"pipeworks_deployer_top.png","pipeworks_deployer_bottom.png","pipeworks_deployer_side2.png","pipeworks_deployer_side1.png",
-			"pipeworks_deployer_back.png","pipeworks_deployer_front_on.png"},
-	mesecons = {effector={rules=pipeworks.rules_all,action_on=deployer_on,action_off=deployer_off}},
-	tube={insert_object=function(pos,node,stack,direction)
-			local meta=minetest.get_meta(pos)
-			local inv=meta:get_inventory()
-			return inv:add_item("main",stack)
-		end,
-		can_insert=function(pos,node,stack,direction)
-			local meta=minetest.get_meta(pos)
-			local inv=meta:get_inventory()
-			return inv:room_for_item("main",stack)
-		end,
-		input_inventory="main",
-		connect_sides={back=1},
-		can_remove = function(pos, node, stack, dir)
-			return stack:get_count()
-		end},
-	is_ground_content = true,
-	paramtype2 = "facedir",
-	tubelike=1,
-	drop = "pipeworks:deployer_off",
-	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2, mesecon = 2,tubedevice=1, tubedevice_receiver=1,not_in_creative_inventory=1},
-	sounds = default.node_sound_stone_defaults(),
-	on_construct = function(pos)
-		local meta = minetest.get_meta(pos)
-		meta:set_string("formspec",
-				"invsize[8,9;]"..
-				"label[0,0;Deployer]"..
-				"list[current_name;main;4,1;3,3;]"..
-				"list[current_player;main;0,5;8,4;]")
-		meta:set_string("infotext", "Deployer")
-		local inv = meta:get_inventory()
-		inv:set_size("main", 3*3)
-	end,
-	can_dig = function(pos,player)
-		local meta = minetest.get_meta(pos);
-		local inv = meta:get_inventory()
-		return inv:is_empty("main")
-	end,
-	after_place_node = function (pos, placer)
-		pipeworks.scan_for_tube_objects(pos, placer)
-		local placer_pos = placer:getpos()
-		
-		--correct for the player's height
-		if placer:is_player() then placer_pos.y = placer_pos.y + 1.5 end
-		
-		--correct for 6d facedir
-		if placer_pos then
-			local dir = {
-				x = pos.x - placer_pos.x,
-				y = pos.y - placer_pos.y,
-				z = pos.z - placer_pos.z
-			}
-			local node = minetest.get_node(pos)
-			node.param2 = minetest.dir_to_facedir(dir, true)
-			minetest.set_node(pos, node)
-			minetest.log("action", "real (6d) facedir: " .. node.param2)
-		end
-		
-		minetest.get_meta(pos):set_string("owner", placer:get_player_name())
-	end,
-	after_dig_node = pipeworks.scan_for_tube_objects,
-	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
-		local meta = minetest.get_meta(pos)
-		if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
-			return 0
-		end
-		return count
-	end,
-	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
-		local meta = minetest.get_meta(pos)
-		if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
-			return 0
-		end
-		return stack:get_count()
-	end,
-	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
-		local meta = minetest.get_meta(pos)
-		if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
-			return 0
-		end
-		return stack:get_count()
-	end
-})
diff --git a/dispenser.lua b/dispenser.lua
deleted file mode 100644
index de78348..0000000
--- a/dispenser.lua
+++ /dev/null
@@ -1,200 +0,0 @@
-minetest.register_craft({
-	output = "pipeworks:dispenser_off",
-	recipe = {
-		{ "default:desert_sand", "default:chest",    "default:desert_sand" },
-		{ "default:stone",       "mesecons:piston",  "default:stone"       },
-		{ "default:stone",       "mesecons:mesecon", "default:stone"       },
-	}
-})
-
-local function delay(x)
-	return (function() return x end)
-end
-
-local function dispenser_on(pos, node)
-	if node.name ~= "pipeworks:dispenser_off" then
-		return
-	end
-
-	node.name = "pipeworks:dispenser_on"
-	minetest.swap_node(pos, node)
-	nodeupdate(pos)
-
-	local meta = minetest.get_meta(pos)
-	local inv = meta:get_inventory()
-	local invlist = inv:get_list("main")
-	for i, stack in ipairs(invlist) do
-		if stack:get_name() ~= nil and stack:get_name() ~= "" then
-			local dir = minetest.facedir_to_dir(node.param2)
-			local pitch
-			local yaw
-			if dir.z < 0 then
-				yaw = 0
-				pitch = 0
-			elseif dir.z > 0 then
-				yaw = math.pi
-				pitch = 0
-			elseif dir.x < 0 then
-				yaw = 3*math.pi/2
-				pitch = 0
-			elseif dir.x > 0 then
-				yaw = math.pi/2
-				pitch = 0
-			elseif dir.y > 0 then
-				yaw = 0
-				pitch = -math.pi/2
-			else
-				yaw = 0
-				pitch = math.pi/2
-			end
-			local dropper_pos = {x = pos.x, y = pos.y - 1.5, z = pos.z} -- Player height
-			local dropper = {
-				get_inventory_formspec = delay(meta:get_string("formspec")),
-				get_look_dir = delay({x = -dir.x, y = -dir.y, z = -dir.z}),
-				get_look_pitch = delay(pitch),
-				get_look_yaw = delay(yaw),
-				get_player_control = delay({jump=false, right=false, left=false, LMB=false, RMB=false, sneak=true, aux1=false, down=false, up=false}),
-				get_player_control_bits = delay(0),
-				get_player_name = delay(":pipeworks:"..minetest.pos_to_string(pos)),
-				is_player = delay(true),
-				is_fake_player = true,
-				set_inventory_formspec = delay(),
-				getpos = delay(dropper_pos),
-				get_hp = delay(20),
-				get_inventory = delay(inv),
-				get_wielded_item = delay(stack),
-				get_wield_index = delay(i),
-				get_wield_list = delay("main"),
-				moveto = delay(),
-				punch = delay(),
-				remove = delay(),
-				right_click = delay(),
-				setpos = delay(),
-				set_hp = delay(),
-				set_properties = delay(),
-				set_wielded_item = function(self, item) inv:set_stack("main", i, item) end,
-				set_animation = delay(),
-				set_attach = delay(),
-				set_detach = delay(),
-				set_bone_position = delay(),
-			}
-			local stack2
-			if minetest.registered_items[stack:get_name()] then
-				stack2 = minetest.registered_items[stack:get_name()].on_drop(stack, dropper, dropper_pos) or stack
-			end
-			inv:set_stack("main", i, stack2)
-			return
-		end
-	end
-end
-
-local dispenser_off = function(pos, node)
-	if node.name == "pipeworks:dispenser_on" then
-		node.name = "pipeworks:dispenser_off"
-		minetest.swap_node(pos, node)
-		nodeupdate(pos)
-	end
-end
-
-for _, state in ipairs({ "off", "on" }) do
-	local grps = { snappy=2, choppy=2, oddly_breakable_by_hand=2, mesecon=2, tubedevice=1, tubedevice_receiver=1 }
-	if state == "on" then grps.not_in_creative_inventory = 1 end
-	minetest.register_node("pipeworks:dispenser_"..state, {
-		description = "Dispenser",
-		tile_images = {
-			"pipeworks_dispenser_top.png",
-			"pipeworks_dispenser_bottom.png",
-			"pipeworks_dispenser_side2.png",
-			"pipeworks_dispenser_side1.png",
-			"pipeworks_dispenser_back.png",
-			"pipeworks_dispenser_front_"..state..".png",
-		},
-		mesecons = {
-			effector = {
-				rules = pipeworks.rules_all,
-				action_on = dispenser_on,
-				action_off = dispenser_off,
-			},
-		},
-		tube={insert_object=function(pos,node,stack,direction)
-				local meta=minetest.get_meta(pos)
-				local inv=meta:get_inventory()
-				return inv:add_item("main",stack)
-			end,
-			can_insert=function(pos,node,stack,direction)
-				local meta=minetest.get_meta(pos)
-				local inv=meta:get_inventory()
-				return inv:room_for_item("main",stack)
-			end,
-			input_inventory="main",
-			connect_sides={back=1},
-			can_remove = function(pos, node, stack, dir)
-				return stack:get_count()
-			end},
-		is_ground_content = true,
-		paramtype2 = "facedir",
-		tubelike = 1,
-		groups = grps,
-		sounds = default.node_sound_stone_defaults(),
-		on_construct = function(pos)
-			local meta = minetest.get_meta(pos)
-			meta:set_string("formspec",
-					"invsize[8,9;]"..
-					"label[0,0;Dispenser]"..
-					"list[current_name;main;4,1;3,3;]"..
-					"list[current_player;main;0,5;8,4;]")
-			meta:set_string("infotext", "Dispenser")
-			local inv = meta:get_inventory()
-			inv:set_size("main", 3*3)
-		end,
-		can_dig = function(pos,player)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			return inv:is_empty("main")
-		end,
-		after_place_node = function (pos, placer)
-			pipeworks.scan_for_tube_objects(pos, placer)
-			local placer_pos = placer:getpos()
-
-			--correct for the player's height
-			if placer:is_player() then placer_pos.y = placer_pos.y + 1.5 end
-
-			--correct for 6d facedir
-			if placer_pos then
-				local dir = {
-					x = pos.x - placer_pos.x,
-					y = pos.y - placer_pos.y,
-					z = pos.z - placer_pos.z
-				}
-				local node = minetest.get_node(pos)
-				node.param2 = minetest.dir_to_facedir(dir, true)
-				minetest.set_node(pos, node)
-				minetest.log("action", "real (6d) facedir: " .. node.param2)
-			end
-
-			minetest.get_meta(pos):set_string("owner", placer:get_player_name())
-		end,
-		after_dig_node = pipeworks.scan_for_tube_objects,
-		allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
-			local meta = minetest.get_meta(pos)
-			if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
-				return 0
-			end
-			return count
-		end,
-		allow_metadata_inventory_put = function(pos, listname, index, stack, player)
-			local meta = minetest.get_meta(pos)
-			if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
-				return 0
-			end
-			return stack:get_count()
-		end,
-		allow_metadata_inventory_take = function(pos, listname, index, stack, player)
-			local meta = minetest.get_meta(pos)
-			if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
-				return 0
-			end
-			return stack:get_count()
-		end,
-	})
-end
diff --git a/init.lua b/init.lua
index 265ae1d..625a99c 100644
--- a/init.lua
+++ b/init.lua
@@ -114,14 +114,13 @@ dofile(pipeworks.modpath.."/flowing_logic.lua")
 dofile(pipeworks.modpath.."/crafts.lua")
 dofile(pipeworks.modpath.."/tubes.lua")
 dofile(pipeworks.modpath.."/trashcan.lua")
+dofile(pipeworks.modpath.."/wielder.lua")
 
 if pipeworks.enable_pipes then dofile(pipeworks.modpath.."/pipes.lua") end
 if pipeworks.enable_teleport_tube then dofile(pipeworks.modpath.."/teleport_tube.lua") end
 if pipeworks.enable_pipe_devices then dofile(pipeworks.modpath.."/devices.lua") end
 if pipeworks.enable_redefines then dofile(pipeworks.modpath.."/compat.lua") end
 if pipeworks.enable_autocrafter then dofile(pipeworks.modpath.."/autocrafter.lua") end
-if pipeworks.enable_deployer then dofile(pipeworks.modpath.."/deployer.lua") end
-if pipeworks.enable_dispenser then dofile(pipeworks.modpath.."/dispenser.lua") end
 
 if pipeworks.enable_node_breaker then
 	dofile(pipeworks.modpath.."/node_breaker.lua")
diff --git a/wielder.lua b/wielder.lua
new file mode 100644
index 0000000..8c4cff9
--- /dev/null
+++ b/wielder.lua
@@ -0,0 +1,238 @@
+local assumed_eye_pos = vector.new(0, 1.5, 0)
+
+local function delay(x)
+	return (function() return x end)
+end
+
+local function wielder_on(data, wielder_pos, wielder_node)
+	if wielder_node.name ~= data.name_base.."_off" then return end
+	wielder_node.name = data.name_base.."_on"
+	minetest.swap_node(wielder_pos, wielder_node)
+	nodeupdate(wielder_pos)
+	local wielder_meta = minetest.get_meta(wielder_pos)
+	local inv = wielder_meta:get_inventory()
+	local invlist = inv:get_list("main")
+	local wieldindex, wieldstack
+	for i, stack in ipairs(invlist) do
+		if not stack:is_empty() then
+			wieldindex = i
+			wieldstack = stack
+			break
+		end
+	end
+	if not wieldindex then return end
+	local dir = minetest.facedir_to_dir(wielder_node.param2)
+	local under_pos = vector.subtract(wielder_pos, dir)
+	local above_pos = vector.subtract(under_pos, dir)
+	local pitch
+	local yaw
+	if dir.z < 0 then
+		yaw = 0
+		pitch = 0
+	elseif dir.z > 0 then
+		yaw = math.pi
+		pitch = 0
+	elseif dir.x < 0 then
+		yaw = 3*math.pi/2
+		pitch = 0
+	elseif dir.x > 0 then
+		yaw = math.pi/2
+		pitch = 0
+	elseif dir.y > 0 then
+		yaw = 0
+		pitch = -math.pi/2
+	else
+		yaw = 0
+		pitch = math.pi/2
+	end
+	local virtplayer = {
+		get_inventory_formspec = delay(wielder_meta:get_string("formspec")),
+		get_look_dir = delay(vector.multiply(dir, -1)),
+		get_look_pitch = delay(pitch),
+		get_look_yaw = delay(yaw),
+		get_player_control = delay({ jump=false, right=false, left=false, LMB=false, RMB=false, sneak=data.sneak, aux1=false, down=false, up=false }),
+		get_player_control_bits = delay(data.sneak and 64 or 0),
+		get_player_name = delay(data.masquerade_as_owner and wielder_meta:get_string("owner") or ":pipeworks:"..minetest.pos_to_string(wielder_pos)),
+		is_player = delay(true),
+		is_fake_player = true,
+		set_inventory_formspec = delay(),
+		getpos = delay(vector.subtract(wielder_pos, assumed_eye_pos)),
+		get_hp = delay(20),
+		get_inventory = delay(inv),
+		get_wielded_item = delay(wieldstack),
+		get_wield_index = delay(wieldindex),
+		get_wield_list = delay("main"),
+		moveto = delay(),
+		punch = delay(),
+		remove = delay(),
+		right_click = delay(),
+		setpos = delay(),
+		set_hp = delay(),
+		set_properties = delay(),
+		set_wielded_item = function(self, item) inv:set_stack("main", wieldindex, item) end,
+		set_animation = delay(),
+		set_attach = delay(),
+		set_detach = delay(),
+		set_bone_position = delay(),
+	}
+	local pointed_thing = { type="node", under=under_pos, above=above_pos }
+	virtplayer:set_wielded_item(data.on_act(virtplayer, pointed_thing) or wieldstack)
+end
+
+local function wielder_off(data, pos, node)
+	if node.name == data.name_base.."_on" then
+		node.name = data.name_base.."_off"
+		minetest.swap_node(pos, node)
+		nodeupdate(pos)
+	end
+end
+
+local function register_wielder(data)
+	for _, state in ipairs({ "off", "on" }) do
+		local groups = { snappy=2, choppy=2, oddly_breakable_by_hand=2, mesecon=2, tubedevice=1, tubedevice_receiver=1 }
+		if state == "on" then groups.not_in_creative_inventory = 1 end
+		local tile_images = {}
+		for _, face in ipairs({ "top", "bottom", "side2", "side1", "back", "front" }) do
+			table.insert(tile_images, data.texture_base.."_"..face..(data.texture_stateful[face] and "_"..state or "")..".png")
+		end
+		minetest.register_node(data.name_base.."_"..state, {
+			description = data.description,
+			tile_images = tile_images,
+			mesecons = {
+				effector = {
+					rules = pipeworks.rules_all,
+					action_on = function (pos, node)
+						wielder_on(data, pos, node)
+					end,
+					action_off = function (pos, node)
+						wielder_off(data, pos, node)
+					end,
+				},
+			},
+			tube = {
+				insert_object = function(pos,node,stack,direction)
+					local meta = minetest.get_meta(pos)
+					local inv = meta:get_inventory()
+					return inv:add_item("main",stack)
+				end,
+				can_insert = function(pos,node,stack,direction)
+					local meta = minetest.get_meta(pos)
+					local inv = meta:get_inventory()
+					return inv:room_for_item("main",stack)
+				end,
+				input_inventory = "main",
+				connect_sides = {back=1},
+				can_remove = function(pos, node, stack, dir)
+					return stack:get_count()
+				end,
+			},
+			is_ground_content = true,
+			paramtype2 = "facedir",
+			tubelike = 1,
+			groups = groups,
+			sounds = default.node_sound_stone_defaults(),
+			drop = data.name_base.."_off",
+			on_construct = function(pos)
+				local meta = minetest.get_meta(pos)
+				meta:set_string("formspec",
+						"invsize[8,9;]"..
+						"item_image[0,0;1,1;"..data.name_base.."_off]"..
+						"label[1,0;"..minetest.formspec_escape(data.description).."]"..
+						"list[current_name;main;4,1;3,3;]"..
+						"list[current_player;main;0,5;8,4;]")
+				meta:set_string("infotext", data.description)
+				local inv = meta:get_inventory()
+				inv:set_size("main", 3*3)
+			end,
+			can_dig = function(pos,player)
+				local meta = minetest.get_meta(pos)
+				local inv = meta:get_inventory()
+				return inv:is_empty("main")
+			end,
+			after_place_node = function (pos, placer)
+				pipeworks.scan_for_tube_objects(pos, placer)
+				local placer_pos = placer:getpos()
+				if placer_pos and placer:is_player() then placer_pos = vector.add(placer_pos, assumed_eye_pos) end
+				if placer_pos then
+					local dir = vector.subtract(pos, placer_pos)
+					local node = minetest.get_node(pos)
+					node.param2 = minetest.dir_to_facedir(dir, true)
+					minetest.set_node(pos, node)
+					minetest.log("action", "real (6d) facedir: " .. node.param2)
+				end
+				minetest.get_meta(pos):set_string("owner", placer:get_player_name())
+			end,
+			after_dig_node = pipeworks.scan_for_tube_objects,
+			allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
+				local meta = minetest.get_meta(pos)
+				if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
+					return 0
+				end
+				return count
+			end,
+			allow_metadata_inventory_put = function(pos, listname, index, stack, player)
+				local meta = minetest.get_meta(pos)
+				if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
+					return 0
+				end
+				return stack:get_count()
+			end,
+			allow_metadata_inventory_take = function(pos, listname, index, stack, player)
+				local meta = minetest.get_meta(pos)
+				if player:get_player_name() ~= meta:get_string("owner") and meta:get_string("owner") ~= "" then
+					return 0
+				end
+				return stack:get_count()
+			end,
+		})
+	end
+end
+
+if pipeworks.enable_deployer then
+	register_wielder({
+		name_base = "pipeworks:deployer",
+		description = "Deployer",
+		texture_base = "pipeworks_deployer",
+		texture_stateful = { front = true },
+		masquerade_as_owner = true,
+		sneak = false,
+		on_act = function(virtplayer, pointed_thing)
+			local wieldstack = virtplayer:get_wielded_item()
+			return (minetest.registered_items[wieldstack:get_name()] or {on_place=minetest.item_place}).on_place(wieldstack, virtplayer, pointed_thing)
+		end,
+	})
+	minetest.register_craft({
+		output = "pipeworks:deployer_off",
+		recipe = {
+			{ "group:wood",    "default:chest",    "group:wood"    },
+			{ "default:stone", "mesecons:piston",  "default:stone" },
+			{ "default:stone", "mesecons:mesecon", "default:stone" },
+		}
+	})
+	-- aliases for when someone had technic installed, but then uninstalled it but not pipeworks
+	minetest.register_alias("technic:deployer_off", "pipeworks:deployer_off")
+	minetest.register_alias("technic:deployer_on", "pipeworks:deployer_on")
+end
+
+if pipeworks.enable_dispenser then
+	register_wielder({
+		name_base = "pipeworks:dispenser",
+		description = "Dispenser",
+		texture_base = "pipeworks_dispenser",
+		texture_stateful = { front = true },
+		masquerade_as_owner = false,
+		sneak = true,
+		on_act = function(virtplayer, pointed_thing)
+			local wieldstack = virtplayer:get_wielded_item()
+			return (minetest.registered_items[wieldstack:get_name()] or {on_drop=minetest.item_drop}).on_drop(wieldstack, virtplayer, virtplayer:getpos())
+		end,
+	})
+	minetest.register_craft({
+		output = "pipeworks:dispenser_off",
+		recipe = {
+			{ "default:desert_sand", "default:chest",    "default:desert_sand" },
+			{ "default:stone",       "mesecons:piston",  "default:stone"       },
+			{ "default:stone",       "mesecons:mesecon", "default:stone"       },
+		}
+	})
+end