games/minetest/mods/bucket/init.lua

   1 -- bucket (Minetest 0.4 mod)
   2 -- A bucket, which can pick up water and lava
   3
   4 minetest.register_alias("bucket", "bucket:bucket_empty")
   5 minetest.register_alias("bucket_water", "bucket:bucket_water")
   6 minetest.register_alias("bucket_lava", "bucket:bucket_lava")
   7
   8 minetest.register_craft({
   9         output = 'bucket:bucket_empty 1',
  10         recipe = {
  11                 {'default:steel_ingot', '', 'default:steel_ingot'},
  12                 {'', 'default:steel_ingot', ''},
  13         }
  14 })
  15
  16 bucket = {}
  17 bucket.liquids = {}
  18
  19 -- Register a new liquid
  20 --   source = name of the source node
  21 --   flowing = name of the flowing node
  22 --   itemname = name of the new bucket item (or nil if liquid is not takeable)
  23 --   inventory_image = texture of the new bucket item (ignored if itemname == nil)
  24 -- This function can be called from any mod (that depends on bucket).
  25 function bucket.register_liquid(source, flowing, itemname, inventory_image)
  26         bucket.liquids[source] = {
  27                 source = source,
  28                 flowing = flowing,
  29                 itemname = itemname,
  30         }
  31         bucket.liquids[flowing] = bucket.liquids[source]
  32
  33         if itemname ~= nil then
  34                 minetest.register_craftitem(itemname, {
  35                         inventory_image = inventory_image,
  36                         stack_max = 1,
  37                         liquids_pointable = true,
  38                         on_use = function(itemstack, user, pointed_thing)
  39                                 -- Must be pointing to node
  40                                 if pointed_thing.type ~= "node" then
  41                                         return
  42                                 end
  43                                 -- Check if pointing to a liquid
  44                                 n = minetest.env:get_node(pointed_thing.under)
  45                                 if bucket.liquids[n.name] == nil then
  46                                         -- Not a liquid
  47                                         minetest.env:add_node(pointed_thing.above, {name=source})
  48                                 elseif n.name ~= source then
  49                                         -- It's a liquid
  50                                         minetest.env:add_node(pointed_thing.under, {name=source})
  51                                 end
  52                                 return {name="bucket:bucket_empty"}
  53                         end
  54                 })
  55         end
  56 end
  57
  58 minetest.register_craftitem("bucket:bucket_empty", {
  59         inventory_image = "bucket.png",
  60         stack_max = 1,
  61         liquids_pointable = true,
  62         on_use = function(itemstack, user, pointed_thing)
  63                 -- Must be pointing to node
  64                 if pointed_thing.type ~= "node" then
  65                         return
  66                 end
  67                 -- Check if pointing to a liquid source
  68                 n = minetest.env:get_node(pointed_thing.under)
  69                 liquiddef = bucket.liquids[n.name]
  70                 if liquiddef ~= nil and liquiddef.source == n.name and liquiddef.itemname ~= nil then
  71                         minetest.env:add_node(pointed_thing.under, {name="air"})
  72                         return {name=liquiddef.itemname}
  73                 end
  74         end,
  75 })
  76
  77 bucket.register_liquid(
  78         "default:water_source",
  79         "default:water_flowing",
  80         "bucket:bucket_water",
  81         "bucket_water.png"
  82 )
  83
  84 bucket.register_liquid(
  85         "default:lava_source",
  86         "default:lava_flowing",
  87         "bucket:bucket_lava",
  88         "bucket_lava.png"
  89 )
  90
  91 minetest.register_craft({
  92         type = "fuel",
  93         recipe = "default:bucket_lava",
  94         burntime = 60,
  95 })