added a mv grinder

technic/machines/mv/grinder.lua

@@ -0,0 +1,292 @@
+-- MV grinder
+
+minetest.register_craft({
+	output = 'technic:mv_grinder',
+	recipe = {
+		{'technic:stainless_steel_ingot', 'technic:grinder', 'technic:stainless_steel_ingot'},
+		{'pipeworks:tube_000000', 'technic:mv_transformer', 'pipeworks:tube_000000'},
+		{'technic:stainless_steel_ingot', 'technic:mv_cable', 'technic:stainless_steel_ingot'},
+	}
+})
+minetest.register_craftitem("technic:mv_grinder", {
+	description = "MV Grinder",
+	stack_max = 99,
+})
+
+local mv_grinder_formspec =
+   "invsize[8,10;]"..
+   "list[current_name;src;3,1;1,1;]"..
+   "list[current_name;dst;5,1;2,2;]"..
+   "list[current_player;main;0,6;8,4;]"..
+   "label[0,0;MV Grinder]"..
+   "list[current_name;upgrade1;1,4;1,1;]"..
+   "list[current_name;upgrade2;2,4;1,1;]"..
+   "label[1,5;Upgrade Slots]"
+
+minetest.register_node(
+"technic:mv_grinder",
+{
+	description = "MV Grinder",
+	tiles = {"technic_mv_grinder_top.png", "technic_mv_grinder_bottom.png", "technic_mv_grinder_side.png",
+			"technic_mv_grinder_side.png", "technic_mv_grinder_side.png", "technic_mv_grinder_front.png"},
+	paramtype2 = "facedir",
+	groups = {cracky=2, tubedevice=1,tubedevice_receiver=1,},
+	tube={insert_object=function(pos,node,stack,direction)
+			local meta=minetest.env:get_meta(pos)
+			local inv=meta:get_inventory()
+			return inv:add_item("src",stack)
+		end,
+		can_insert=function(pos,node,stack,direction)
+			local meta=minetest.env:get_meta(pos)
+			local inv=meta:get_inventory()
+			return inv:room_for_item("src",stack)
+		end,
+	},
+	legacy_facedir_simple = true,
+	sounds = default.node_sound_wood_defaults(),
+	on_construct = function(pos)
+		local meta = minetest.env:get_meta(pos)
+		meta:set_string("infotext", "MV Grinder")
+		meta:set_float("technic_mv_power_machine", 1)
+		meta:set_int("tube_time",  0)
+		meta:set_string("formspec", mv_grinder_formspec)
+		local inv = meta:get_inventory()
+		inv:set_size("src", 1)
+		inv:set_size("dst", 4)
+		inv:set_size("upgrade1", 1)
+		inv:set_size("upgrade2", 1)
+	end,
+	can_dig = function(pos,player)
+		local meta = minetest.env:get_meta(pos);
+		local inv = meta:get_inventory()
+		if not inv:is_empty("src") or not inv:is_empty("dst") or not inv:is_empty("upgrade1") or not inv:is_empty("upgrade2") then
+			minetest.chat_send_player(player:get_player_name(), "Machine cannot be removed because it is not empty");
+			return false
+		else
+			return true
+		end
+	end,
+})
+
+minetest.register_node(
+	"technic:mv_grinder_active",
+	{
+		description = "Grinder",
+		tiles = {"technic_mv_grinder_top.png", "technic_mv_grinder_bottom.png", "technic_mv_grinder_side.png",
+			"technic_mv_grinder_side.png", "technic_mv_grinder_side.png", "technic_mv_grinder_front_active.png"},
+		paramtype2 = "facedir",
+		groups = {cracky=2,tubedevice=1,tubedevice_receiver=1,not_in_creative_inventory=1},
+		tube={	insert_object=function(pos,node,stack,direction)
+				local meta=minetest.env:get_meta(pos)
+				local inv=meta:get_inventory()
+				return inv:add_item("src",stack)
+			end,
+			can_insert=function(pos,node,stack,direction)
+				local meta=minetest.env:get_meta(pos)
+				local inv=meta:get_inventory()
+				return inv:room_for_item("src",stack)
+			end,
+		},
+		legacy_facedir_simple = true,
+		sounds = default.node_sound_wood_defaults(),
+		can_dig = function(pos,player)
+			local meta = minetest.env:get_meta(pos);
+			local inv = meta:get_inventory()
+			if not inv:is_empty("src") or not inv:is_empty("dst") or not inv:is_empty("upgrade1") or not inv:is_empty("upgrade2") then
+				minetest.chat_send_player(player:get_player_name(), "Machine cannot be removed because it is not empty");
+				return false
+			else
+				return true
+			end
+		end,
+		-- These three makes sure upgrades are not moved in or out while the grinder is active.
+		allow_metadata_inventory_put = function(pos, listname, index, stack, player)
+			if listname == "src" or listname == "dst" then
+				return 99
+			else
+				return 0 -- Disallow the move
+			end
+		end,
+		allow_metadata_inventory_take = function(pos, listname, index, stack, player)
+			if listname == "src" or listname == "dst" then
+				return 99
+			else
+				return 0 -- Disallow the move
+			end
+		end,
+		allow_metadata_inventory_move = function(pos, from_list, to_list, to_list, to_index, count, player)
+			return 0
+		end,
+	})
+
+local send_grinded_items = function(pos,x_velocity,z_velocity)
+	-- Send items on their way in the pipe system.
+	local meta=minetest.env:get_meta(pos) 
+	local inv = meta:get_inventory()
+	local i=0
+	for _,stack in ipairs(inv:get_list("dst")) do
+		i=i+1
+		if stack then
+			local item0=stack:to_table()
+			if item0 then 
+				item0["count"]="1"
+				local item1=tube_item({x=pos.x,y=pos.y,z=pos.z},item0)
+				item1:get_luaentity().start_pos = {x=pos.x,y=pos.y,z=pos.z}
+				item1:setvelocity({x=x_velocity, y=0, z=z_velocity})
+				item1:setacceleration({x=0, y=0, z=0})
+				stack:take_item(1);
+				inv:set_stack("dst", i, stack)
+				return
+			end
+		end
+	end
+end
+
+minetest.register_abm(
+	{ nodenames = {"technic:mv_grinder","technic:mv_grinder_active"},
+	interval = 1,
+	chance   = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		-- Run a machine through its states. Takes the same arguments as the ABM action
+		-- and adds the machine's states and any extra data which is needed by the machine.
+		-- A machine is characterized by running through a set number of states (usually 2:
+		-- Idle and active) in some order. A state decides when to move to the next one
+		-- and the machine only changes state if it is powered correctly.
+		-- The machine will automatically shut down if disconnected from power in some fashion.
+		local meta         = minetest.env:get_meta(pos)
+		local eu_input     = meta:get_int("MV_EU_input")
+		local state        = meta:get_int("state")
+		local next_state   = state
+
+		-- Machine information
+		local machine_name         = "MV Grinder"
+		local machine_node         = "technic:mv_grinder"
+		local machine_state_demand = { 50, 600, 450, 300 }
+
+		-- Setup meta data if it does not exist. state is used as an indicator of this
+		if state == 0 then
+			meta:set_int("state", 1)
+			meta:set_int("MV_EU_demand", machine_state_demand[1])
+			meta:set_int("MV_EU_input", 0)
+			return
+		end
+
+		-- Power off automatically if no longer connected to a switching station
+		technic.switching_station_timeout_count(pos, "MV")
+
+		-- State machine
+		if eu_input == 0 then
+			-- unpowered - go idle
+			hacky_swap_node(pos, machine_node)
+			meta:set_string("infotext", machine_name.." Unpowered")
+			next_state = 1
+		elseif eu_input == machine_state_demand[state] then
+			-- Powered - do the state specific actions
+
+			local inv    = meta:get_inventory()
+			local empty  = inv:is_empty("src")
+
+			-- get the names of the upgrades
+			local upg_item1
+			local upg_item1_name=""
+			local upg_item2
+			local upg_item2_name=""
+			local srcstack = inv:get_stack("upgrade1", 1)
+			if  srcstack then upg_item1=srcstack:to_table() end
+			srcstack = inv:get_stack("upgrade2", 1)
+			if  srcstack then upg_item2=srcstack:to_table() end
+			if upg_item1 then upg_item1_name=upg_item1.name end
+			if upg_item2 then upg_item2_name=upg_item2.name end
+
+			-- Save some power by installing battery upgrades. Fully upgraded makes this
+			-- furnace use the same amount of power as the LV version
+			local EU_saving_upgrade = 0
+			if upg_item1_name=="technic:battery" then EU_saving_upgrade = EU_saving_upgrade + 1 end
+			if upg_item2_name=="technic:battery" then EU_saving_upgrade = EU_saving_upgrade + 1 end
+
+			-- Tube loading speed can be upgraded using control logic units
+			local tube_speed_upgrade = 0
+			if upg_item1_name=="technic:control_logic_unit" then tube_speed_upgrade = tube_speed_upgrade + 1 end
+			if upg_item2_name=="technic:control_logic_unit" then tube_speed_upgrade = tube_speed_upgrade + 1 end
+
+			-- Handle pipeworks (consumes tube_speed_upgrade)
+			local pos1={x=pos.x, y=pos.y, z=pos.z}
+			local x_velocity=0
+			local z_velocity=0
+
+			-- Output is on the left side of the furnace
+			if node.param2==3 then pos1.z=pos1.z-1 z_velocity =-1 end
+			if node.param2==2 then pos1.x=pos1.x-1 x_velocity =-1 end
+			if node.param2==1 then pos1.z=pos1.z+1 z_velocity = 1 end
+			if node.param2==0 then pos1.x=pos1.x+1 x_velocity = 1 end
+
+			local output_tube_connected = false
+			local meta1 = minetest.env:get_meta(pos1) 
+			if meta1:get_int("tubelike") == 1 then
+				output_tube_connected=true
+			end
+			tube_time = meta:get_int("tube_time")
+			tube_time = tube_time + tube_speed_upgrade
+			if tube_time > 3 then
+				tube_time = 0
+				if output_tube_connected then
+					send_grinded_items(pos,x_velocity,z_velocity)
+				end
+			end
+			meta:set_int("tube_time", tube_time)
+
+			-- The machine shuts down if we have nothing to grind and no tube is connected
+			-- or if we have nothing to send with a tube connected.
+			if    (not output_tube_connected and inv:is_empty("src"))
+			or (    output_tube_connected and inv:is_empty("dst")) then
+				next_state = 1
+			end
+
+			if state == 1 then
+				hacky_swap_node(pos, machine_node)
+				meta:set_string("infotext", machine_name.." Idle")
+
+				local result = technic.get_grinder_recipe(inv:get_stack("src", 1))
+				if not empty and result and inv:room_for_item("dst",result) then
+					meta:set_int("src_time", 0)
+					next_state = 2+EU_saving_upgrade
+				end
+
+			elseif state == 2 or state == 3 or state == 4 then
+				hacky_swap_node(pos, machine_node.."_active")
+				meta:set_string("infotext", machine_name.." Active")
+
+				if empty then
+					next_state = 1
+				else
+					meta:set_int("src_time", meta:get_int("src_time") + 1)
+					if meta:get_int("src_time") == 4 then -- 4 ticks per output
+						-- check if there's room for output in "dst" list
+						local result = technic.get_grinder_recipe(inv:get_stack("src", 1))
+
+						meta:set_int("src_time", 0)
+						if inv:room_for_item("dst",result) then
+							-- take stuff from "src" list
+							srcstack = inv:get_stack("src", 1)
+							srcstack:take_item()
+							inv:set_stack("src", 1, srcstack)
+							-- Put result in "dst" list
+							inv:add_item("dst", result)
+						else
+							-- all full: go idle
+							next_state = 1
+						end
+					end
+				end
+			end
+		end
+		-- Change state?
+		if next_state ~= state then
+			meta:set_int("MV_EU_demand", machine_state_demand[next_state])
+			meta:set_int("state", next_state)
+		end
+	end
+})
+
+technic.register_MV_machine ("technic:mv_grinder","RE")
+technic.register_MV_machine ("technic:mv_grinder_active","RE")

technic/machines/mv/init.lua

@@ -5,6 +5,7 @@ dofile(path.."/battery_box.lua")
 dofile(path.."/solar_array.lua")
 dofile(path.."/electric_furnace.lua")
 dofile(path.."/alloy_furnace.lua")
+dofile(path.."/grinder.lua")
 
 -- The power radiator supplies appliances with inductive coupled power:
 -- Lighting and associated textures is taken directly from VanessaE's homedecor and made electric.