mods/bucket/init.lua

   1 -- Minetest 0.4 mod: bucket
   2 -- See README.txt for licensing and other information.
   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 local function check_protection(pos, name, text)
  20         if minetest.is_protected(pos, name) then
  21                 minetest.log("action", (name ~= "" and name or "A mod")
  22                         .. " tried to " .. text
  23                         .. " at protected position "
  24                         .. minetest.pos_to_string(pos)
  25                         .. " with a bucket")
  26                 minetest.record_protection_violation(pos, name)
  27                 return true
  28         end
  29         return false
  30 end
  31
  32 -- Register a new liquid
  33 --    source = name of the source node
  34 --    flowing = name of the flowing node
  35 --    itemname = name of the new bucket item (or nil if liquid is not takeable)
  36 --    inventory_image = texture of the new bucket item (ignored if itemname == nil)
  37 --    name = text description of the bucket item
  38 --    groups = (optional) groups of the bucket item, for example {water_bucket = 1}
  39 --    force_renew = (optional) bool. Force the liquid source to renew if it has a
  40 --                  source neighbour, even if defined as 'liquid_renewable = false'.
  41 --                  Needed to avoid creating holes in sloping rivers.
  42 -- This function can be called from any mod (that depends on bucket).
  43 function bucket.register_liquid(source, flowing, itemname, inventory_image, name,
  44                 groups, force_renew)
  45         bucket.liquids[source] = {
  46                 source = source,
  47                 flowing = flowing,
  48                 itemname = itemname,
  49                 force_renew = force_renew,
  50         }
  51         bucket.liquids[flowing] = bucket.liquids[source]
  52
  53         if itemname ~= nil then
  54                 minetest.register_craftitem(itemname, {
  55                         description = name,
  56                         inventory_image = inventory_image,
  57                         stack_max = 1,
  58                         liquids_pointable = true,
  59                         groups = groups,
  60
  61                         on_place = function(itemstack, user, pointed_thing)
  62                                 -- Must be pointing to node
  63                                 if pointed_thing.type ~= "node" then
  64                                         return
  65                                 end
  66
  67                                 local node = minetest.get_node_or_nil(pointed_thing.under)
  68                                 local ndef = node and minetest.registered_nodes[node.name]
  69
  70                                 -- Call on_rightclick if the pointed node defines it
  71                                 if ndef and ndef.on_rightclick and
  72                                    user and not user:get_player_control().sneak then
  73                                         return ndef.on_rightclick(
  74                                                 pointed_thing.under,
  75                                                 node, user,
  76                                                 itemstack)
  77                                 end
  78
  79                                 local lpos
  80
  81                                 -- Check if pointing to a buildable node
  82                                 if ndef and ndef.buildable_to then
  83                                         -- buildable; replace the node
  84                                         lpos = pointed_thing.under
  85                                 else
  86                                         -- not buildable to; place the liquid above
  87                                         -- check if the node above can be replaced
  88
  89                                         lpos = pointed_thing.above
  90                                         node = minetest.get_node_or_nil(lpos)
  91                                         local above_ndef = node and minetest.registered_nodes[node.name]
  92
  93                                         if not above_ndef or not above_ndef.buildable_to then
  94                                                 -- do not remove the bucket with the liquid
  95                                                 return itemstack
  96                                         end
  97                                 end
  98
  99                                 if check_protection(lpos, user
 100                                                 and user:get_player_name()
 101                                                 or "", "place "..source) then
 102                                         return
 103                                 end
 104
 105                                 minetest.set_node(lpos, {name = source})
 106                                 return ItemStack("bucket:bucket_empty")
 107                         end
 108                 })
 109         end
 110 end
 111
 112 minetest.register_craftitem("bucket:bucket_empty", {
 113         description = "Empty Bucket",
 114         inventory_image = "bucket.png",
 115         stack_max = 99,
 116         liquids_pointable = true,
 117         on_use = function(itemstack, user, pointed_thing)
 118                 if pointed_thing.type == "object" then
 119                         pointed_thing.ref:punch(user, 1.0, { full_punch_interval=1.0 }, nil)
 120                         return user:get_wielded_item()
 121                 elseif pointed_thing.type ~= "node" then
 122                         -- do nothing if it's neither object nor node
 123                         return
 124                 end
 125                 -- Check if pointing to a liquid source
 126                 local node = minetest.get_node(pointed_thing.under)
 127                 local liquiddef = bucket.liquids[node.name]
 128                 local item_count = user:get_wielded_item():get_count()
 129
 130                 if liquiddef ~= nil
 131                 and liquiddef.itemname ~= nil
 132                 and node.name == liquiddef.source then
 133                         if check_protection(pointed_thing.under,
 134                                         user:get_player_name(),
 135                                         "take ".. node.name) then
 136                                 return
 137                         end
 138
 139                         -- default set to return filled bucket
 140                         local giving_back = liquiddef.itemname
 141
 142                         -- check if holding more than 1 empty bucket
 143                         if item_count > 1 then
 144
 145                                 -- if space in inventory add filled bucked, otherwise drop as item
 146                                 local inv = user:get_inventory()
 147                                 if inv:room_for_item("main", {name=liquiddef.itemname}) then
 148                                         inv:add_item("main", liquiddef.itemname)
 149                                 else
 150                                         local pos = user:getpos()
 151                                         pos.y = math.floor(pos.y + 0.5)
 152                                         minetest.add_item(pos, liquiddef.itemname)
 153                                 end
 154
 155                                 -- set to return empty buckets minus 1
 156                                 giving_back = "bucket:bucket_empty "..tostring(item_count-1)
 157
 158                         end
 159
 160                         -- force_renew requires a source neighbour
 161                         local source_neighbor = false
 162                         if liquiddef.force_renew then
 163                                 source_neighbor =
 164                                         minetest.find_node_near(pointed_thing.under, 1, liquiddef.source)
 165                         end
 166                         if not (source_neighbor and liquiddef.force_renew) then
 167                                 minetest.add_node(pointed_thing.under, {name = "air"})
 168                         end
 169
 170                         return ItemStack(giving_back)
 171                 else
 172                         -- non-liquid nodes will have their on_punch triggered
 173                         local node_def = minetest.registered_nodes[node.name]
 174                         if node_def then
 175                                 node_def.on_punch(pointed_thing.under, node, user, pointed_thing)
 176                         end
 177                         return user:get_wielded_item()
 178                 end
 179         end,
 180 })
 181
 182 bucket.register_liquid(
 183         "default:water_source",
 184         "default:water_flowing",
 185         "bucket:bucket_water",
 186         "bucket_water.png",
 187         "Water Bucket",
 188         {water_bucket = 1}
 189 )
 190
 191 bucket.register_liquid(
 192         "default:river_water_source",
 193         "default:river_water_flowing",
 194         "bucket:bucket_river_water",
 195         "bucket_river_water.png",
 196         "River Water Bucket",
 197         {water_bucket = 1},
 198         true
 199 )
 200
 201 bucket.register_liquid(
 202         "default:lava_source",
 203         "default:lava_flowing",
 204         "bucket:bucket_lava",
 205         "bucket_lava.png",
 206         "Lava Bucket"
 207 )
 208
 209 minetest.register_craft({
 210         type = "fuel",
 211         recipe = "bucket:bucket_lava",
 212         burntime = 60,
 213         replacements = {{"bucket:bucket_lava", "bucket:bucket_empty"}},
 214 })
 215