Merge pull request #38 from kpoppel/master

kpoppel

2013-07-02 053fa59739f4b772174bf0a090969b3395ab3f98

 technic/water_mill.lua

New file
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-- A water mill produces LV EUs by exploiting flowing water across it
-- It is a LV EU supplyer and fairly low yield (max 120EUs)
-- It is a little under half as good as the thermal generator.
minetest.register_alias("water_mill", "technic:water_mill")

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

minetest.register_craftitem("technic:water_mill", {
   description = "Water Mill",
   stack_max = 99,
}) 

local water_mill_formspec =
   "invsize[8,4;]"..
   "image[1,1;1,2;technic_power_meter_bg.png]"..
   "label[0,0;Water Mill]"..
   "label[1,3;Power level]"..
   "list[current_player;main;0,5;8,4;]"
	

minetest.register_node(
   "technic:water_mill",
   {
      description = "Water Mill",
      tiles = {"technic_water_mill_top.png", "technic_machine_bottom.png", "technic_water_mill_side.png",
          "technic_water_mill_side.png", "technic_water_mill_side.png", "technic_water_mill_side.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", "Water Mill")
         meta:set_float("technic_power_machine", 1)
         meta:set_int("LV_EU_supply", 0)
         meta:set_string("formspec", water_mill_formspec)	
           end,	
   })

minetest.register_node(
   "technic:water_mill_active",
   {
      description = "Water Mill",
      tiles = {"technic_water_mill_top_active.png", "technic_machine_bottom.png", "technic_water_mill_side.png",
          "technic_water_mill_side.png", "technic_water_mill_side.png", "technic_water_mill_side.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:water_mill",
})

local check_node_around_mill = function(pos)
              local node=minetest.env:get_node(pos)
              if node.name=="default:water_flowing" then return 1 end
              return 0
                end

minetest.register_abm(
   {
      nodenames = {"technic:water_mill","technic:water_mill_active"},
      interval = 1,
      chance   = 1,
      action = function(pos, node, active_object_count, active_object_count_wider)
        local meta             = minetest.env:get_meta(pos)
        local water_nodes      = 0
        local lava_nodes       = 0
        local production_level = 0
        local eu_supply        = 0

        pos.x=pos.x+1
        local check=check_node_around_mill (pos)
        if check==1 then water_nodes=water_nodes+1 end
        pos.x=pos.x-2
        check=check_node_around_mill (pos)
        if check==1 then water_nodes=water_nodes+1 end
        pos.x=pos.x+1
        pos.z=pos.z+1
        check=check_node_around_mill (pos)
        if check==1 then water_nodes=water_nodes+1 end
        pos.z=pos.z-2
        check=check_node_around_mill (pos)
        if check==1 then water_nodes=water_nodes+1 end
        pos.z=pos.z+1
	
        if water_nodes==1 then production_level =  25; eu_supply =  30 end
        if water_nodes==2 then production_level =  50; eu_supply =  60 end
        if water_nodes==3 then production_level =  75; eu_supply =  90 end
        if water_nodes==4 then production_level = 100; eu_supply = 120 end

        if production_level>0 then
           meta:set_int("LV_EU_supply", eu_supply)
        end

        local load = 1 -- math.floor((charge/max_charge)*100)
        meta:set_string("formspec",
              "invsize[8,4;]"..
                 "image[1,1;1,2;technic_power_meter_bg.png^[lowpart:"..
                 (load)..":technic_power_meter_fg.png]"..
              "label[0,0;Water Mill]"..
              "label[1,3;Power level]"..
              "label[4,0;Production at "..tostring(production_level).."%]"
             )
				
        if production_level>0 and minetest.env:get_node(pos).name=="technic:water_mill" then
           hacky_swap_node (pos,"technic:water_mill_active")
           meta:set_int("LV_EU_supply", 0)
           return
        end
        if production_level==0 then hacky_swap_node (pos,"technic:water_mill") end
          end
   }) 

technic.register_LV_machine ("technic:water_mill","PR")
technic.register_LV_machine ("technic:water_mill_active","PR")