Merge pull request #38 from kpoppel/master

kpoppel

2013-07-02 053fa59739f4b772174bf0a090969b3395ab3f98

 technic/generator.lua

New file
@@ -0,0 +1,147 @@
-- Th coal driven EU generator.
-- A simple device to get started on the electric machines.
-- Inefficient and expensive in coal (200EU 16 ticks)
-- Also only allows for LV machinery to run.
minetest.register_alias("generator", "technic:generator")
minetest.register_alias("generator", "technic:generator_active")

minetest.register_craft({
   output = 'technic:generator',
   recipe = {
      {'default:stone', 'default:stone', 'default:stone'},
      {'default:stone', '', 'default:stone'},
      {'default:stone', 'moreores:copper_ingot', 'default:stone'},
   }
})

minetest.register_craftitem("technic:generator", {
   description = "Coal Driven Generator",
   stack_max = 99,
}) 

local generator_formspec =
   "invsize[8,9;]"..
   "image[0,0;5,5;technic_generator_menu.png]"..
   "image[1,1;1,2;technic_power_meter_bg.png]"..
--   "label[0,0;Generator]"..
   "label[1,3;Power level]"..
   "list[current_name;src;3,1;1,1;]"..
   "image[4,1;1,1;default_furnace_fire_bg.png]"..
   "list[current_player;main;0,5;8,4;]"
	

minetest.register_node(
   "technic:generator",
   {
      description = "Coal Driven Generator",
      tiles = {"technic_generator_top.png", "technic_machine_bottom.png", "technic_generator_side.png",
          "technic_generator_side.png", "technic_generator_side.png", "technic_generator_front.png"},
      paramtype2 = "facedir",
      groups = {snappy=2,choppy=2,oddly_breakable_by_hand=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", "Coal Electric Generator")
         meta:set_float("technic_power_machine", 1)
         meta:set_int("LV_EU_supply", 0)
         meta:set_int("LV_EU_from_fuel", 1) -- Signal to the switching station that this device burns some sort of fuel and needs special handling
         meta:set_int("burn_time", 0)
         meta:set_string("formspec", generator_formspec)
         local inv = meta:get_inventory()
         inv:set_size("src", 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") 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:generator_active",
   {
      description = "Coal Driven Generator",
      tiles = {"technic_generator_top.png", "technic_machine_bottom.png", "technic_generator_side.png",
          "technic_generator_side.png", "technic_generator_side.png", "technic_generator_front_active.png"},
      paramtype2 = "facedir",
      groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2,not_in_creative_inventory=1},
      legacy_facedir_simple = true,
      sounds = default.node_sound_wood_defaults(),
      drop="technic:generator",
      can_dig = function(pos,player)
         local meta = minetest.env:get_meta(pos);
         local inv = meta:get_inventory()
         if not inv:is_empty("src") 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:generator","technic:generator_active"},
      interval = 1,
      chance   = 1,
      action = function(pos, node, active_object_count, active_object_count_wider)
        local meta = minetest.env:get_meta(pos)
        local burn_time= meta:get_int("burn_time")

        -- If more to burn and the energy produced was used: produce some more
        if burn_time>0 then
           if meta:get_int("LV_EU_supply") == 0 then
         -- We did not use the power
         meta:set_int("LV_EU_supply", 200) -- Give 200EUs
           else
         burn_time = burn_time - 1
         meta:set_int("burn_time",burn_time)
           end
        end

        -- Burn another piece of coal
        if burn_time==0 then
           local inv = meta:get_inventory()
           if inv:is_empty("src") == false  then 
         local srcstack = inv:get_stack("src", 1)
         src_item=srcstack:to_table()
         if src_item["name"] == "default:coal_lump" then
            srcstack:take_item()
            inv:set_stack("src", 1, srcstack)
            burn_time=16
            meta:set_int("burn_time",burn_time)
            hacky_swap_node (pos,"technic:generator_active") 
            meta:set_int("LV_EU_supply", 200) -- Give 200EUs
         end
           end
        end

        local load = 8 -- math.floor((charge/max_charge)*100)
        local percent = math.floor((burn_time/16)*100)
        meta:set_string("formspec",
              "invsize[8,9;]"..
                 "image[1,1;1,2;technic_power_meter_bg.png^[lowpart:"..
                 (load)..":technic_power_meter_fg.png]"..
              "label[0,0;Generator]"..
              "label[1,3;Power level]"..
              "list[current_name;src;3,1;1,1;]"..
              "image[4,1;1,1;default_furnace_fire_bg.png^[lowpart:"..
              (percent)..":default_furnace_fire_fg.png]"..
                "list[current_player;main;0,5;8,4;]"
          )

        if burn_time==0 then
           hacky_swap_node (pos,"technic:generator")
        end
          end
   })

technic.register_LV_machine ("technic:generator","PR")
technic.register_LV_machine ("technic:generator_active","PR")