Add extractor.

Add extractor for make more rubber from latex. Moved make dyes from
grinder to extractor.

technic/extractor.lua

@@ -0,0 +1,212 @@
+technic.extractor_recipes ={}
+
+technic.register_extractor_recipe = function(src, dst)
+				   technic.extractor_recipes[src] = dst
+				   if unified_inventory then
+				      unified_inventory.register_craft(
+					 {
+					    type = "extracting",
+					    output = dst,
+					    items = {src},
+					    width = 0,
+					 })
+				   end
+				end
+
+-- Receive an ItemStack of result by an ItemStack input
+technic.get_extractor_recipe = function(itemstack)
+				local src_item  = itemstack:to_table()
+				if src_item == nil then
+				   return nil
+				end
+				local item_name = src_item["name"]
+				if technic.extractor_recipes[item_name] then
+				   return ItemStack(technic.extractor_recipes[item_name])
+				else
+				   return nil
+				end
+			     end
+
+
+
+technic.register_extractor_recipe("technic:coal_dust","dye:black 2")
+technic.register_extractor_recipe("default:cactus","dye:green 2")
+technic.register_extractor_recipe("default:dry_shrub","dye:brown 2")
+technic.register_extractor_recipe("flowers:geranium","dye:blue 2")
+technic.register_extractor_recipe("flowers:dandelion_white","dye:white 2")
+technic.register_extractor_recipe("flowers:dandelion_yellow","dye:yellow 2")
+technic.register_extractor_recipe("flowers:tulip","dye:orange 2")
+technic.register_extractor_recipe("flowers:rose","dye:red 2")
+technic.register_extractor_recipe("flowers:viola","dye:violet 2")
+technic.register_extractor_recipe("technic:raw_latex","technic:rubber 3")
+technic.register_extractor_recipe("moretrees:rubber_tree_trunk_empty","technic:rubber 1")
+technic.register_extractor_recipe("moretrees:rubber_tree_trunk","technic:rubber 1")
+
+minetest.register_alias("extractor", "technic:extractor")
+minetest.register_craft({
+			   output = 'technic:extractor',
+			   recipe = {
+			      {'technic:treetap', 'technic:motor', 'technic:treetap'},
+			      {'technic:treetap', 'technic:lv_cable', 'technic:treetap'},
+			      {'','',''},
+			   }
+			})
+
+minetest.register_craftitem("technic:extractor", {
+			       description = "Extractor",
+			       stack_max = 99,
+			    })
+
+local extractor_formspec =
+   "invsize[8,9;]"..
+   "label[0,0;Extractor]"..
+   "list[current_name;src;3,1;1,1;]"..
+   "list[current_name;dst;5,1;2,2;]"..
+   "list[current_player;main;0,5;8,4;]"
+
+minetest.register_node(
+   "technic:extractor",
+   {
+      description = "Extractor",
+      tiles = {"technic_lv_grinder_top.png", "technic_lv_grinder_bottom.png", "technic_lv_grinder_side.png",
+	       "technic_lv_grinder_side.png", "technic_lv_grinder_side.png", "technic_lv_grinder_front.png"},
+      paramtype2 = "facedir",
+      groups = {cracky=2},
+      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", "Extractor")
+			meta:set_float("technic_power_machine", 1)
+			meta:set_string("formspec", extractor_formspec)
+			local inv = meta:get_inventory()
+			inv:set_size("src", 1)
+			inv:set_size("dst", 4)
+		     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") 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:extractor_active",
+   {
+      description = "Extractor",
+      tiles = {"technic_lv_grinder_top.png", "technic_lv_grinder_bottom.png", "technic_lv_grinder_side.png",
+	       "technic_lv_grinder_side.png", "technic_lv_grinder_side.png", "technic_lv_grinder_front_active.png"},
+      paramtype2 = "facedir",
+      groups = {cracky=2,not_in_creative_inventory=1},
+      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") 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_abm(
+   { nodenames = {"technic:extractor","technic:extractor_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("LV_EU_input")
+		 local state        = meta:get_int("state")
+		 local next_state   = state
+
+		 -- Machine information
+		 local machine_name         = "Extractor"
+		 local machine_node         = "technic:extractor"
+		 local machine_state_demand = { 50, 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("LV_EU_demand", machine_state_demand[1])
+		    meta:set_int("LV_EU_input", 0)
+		    return
+		 end
+			 
+		 -- Power off automatically if no longer connected to a switching station
+		 technic.switching_station_timeout_count(pos, "LV")
+			 
+		 -- 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")
+
+		    if state == 1 then
+		       hacky_swap_node(pos, machine_node)
+		       meta:set_string("infotext", machine_name.." Idle")
+
+		       local result = technic.get_extractor_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
+		       end
+
+		    elseif state == 2 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_extractor_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("LV_EU_demand", machine_state_demand[next_state])
+		    meta:set_int("state", next_state)
+		 end
+	      end
+  })
+
+technic.register_LV_machine ("technic:extractor","RE")
+technic.register_LV_machine ("technic:extractor_active","RE")
+

technic/grinder.lua

@@ -53,15 +53,6 @@ technic.register_grinder_recipe("technic:stainless_steel_ingot","stainless_steel
 technic.register_grinder_recipe("technic:brass_ingot","technic:brass_dust 1")
 technic.register_grinder_recipe("technic:zinc_lump","technic:zinc_dust 2")
 technic.register_grinder_recipe("technic:zinc_ingot","technic:zinc_dust 1")
-technic.register_grinder_recipe("technic:coal_dust","dye:black 2")
-technic.register_grinder_recipe("default:cactus","dye:green 2")
-technic.register_grinder_recipe("default:dry_shrub","dye:brown 2")
-technic.register_grinder_recipe("flowers:flower_geranium","dye:blue 2")
-technic.register_grinder_recipe("flowers:flower_dandelion_white","dye:white 2")
-technic.register_grinder_recipe("flowers:flower_dandelion_yellow","dye:yellow 2")
-technic.register_grinder_recipe("flowers:flower_tulip","dye:orange 2")
-technic.register_grinder_recipe("flowers:flower_rose","dye:red 2")
-technic.register_grinder_recipe("flowers:flower_viola","dye:violet 2")
 
 minetest.register_craftitem( "technic:coal_dust", {
 				description = "Coal Dust",

technic/init.lua

@@ -44,6 +44,7 @@ dofile(modpath.."/grinder.lua")
 dofile(modpath.."/cnc.lua")
 dofile(modpath.."/cnc_api.lua")
 dofile(modpath.."/cnc_nodes.lua")
+dofile(modpath.."/extractor.lua")
 
 --MV machines
 dofile(modpath.."/wires_mv.lua")

unified_inventory/api.lua

@@ -231,6 +231,9 @@ unified_inventory.get_formspec = function(player,page)
 				if craft.type == "alloy" then
 				method="Alloy cooking"
 				end
+				if craft.type == "extracting" then
+				method="Extracting"
+				end		
 				formspec = formspec.."label[6,3;"..method.."]"
 			end
 			
@@ -558,7 +561,7 @@ unified_inventory.update_recipe = function(player, stack_name, alternate)
 	inv:set_stack("output", 1, craft.output)
 	local items=craft.items
 	-- cook, fuel, grinding recipes
-	if craft.type == "cooking" or craft.type == "fuel" or craft.type == "grinding" then
+	if craft.type == "cooking" or craft.type == "fuel" or craft.type == "grinding" or craft.type == "extracting" then
 		def=unified_inventory.find_item_def(craft["items"][1])
 		if def then
 			inv:set_stack("build", 1, def)