minetest/data/builtin.lua

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--
-- This file contains built-in stuff in Minetest implemented in Lua.
--
-- It is always loaded and executed after registration of the C API,
-- before loading and running any mods.
--
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function basic_dump2(o)
if type(o) == "number" then
return tostring(o)
elseif type(o) == "string" then
return string.format("%q", o)
elseif type(o) == "boolean" then
return tostring(o)
elseif type(o) == "function" then
return "<function>"
elseif type(o) == "userdata" then
return "<userdata>"
elseif type(o) == "nil" then
return "nil"
else
error("cannot dump a " .. type(o))
return nil
end
end
function dump2(o, name, dumped)
name = name or "_"
dumped = dumped or {}
io.write(name, " = ")
if type(o) == "number" or type(o) == "string" or type(o) == "boolean"
or type(o) == "function" or type(o) == "nil"
or type(o) == "userdata" then
io.write(basic_dump2(o), "\n")
elseif type(o) == "table" then
if dumped[o] then
io.write(dumped[o], "\n")
else
dumped[o] = name
io.write("{}\n") -- new table
for k,v in pairs(o) do
local fieldname = string.format("%s[%s]", name, basic_dump2(k))
dump2(v, fieldname, dumped)
end
end
else
error("cannot dump a " .. type(o))
return nil
end
end
function dump(o, dumped)
dumped = dumped or {}
if type(o) == "number" then
return tostring(o)
elseif type(o) == "string" then
return string.format("%q", o)
elseif type(o) == "table" then
if dumped[o] then
return "<circular reference>"
end
dumped[o] = true
local t = {}
for k,v in pairs(o) do
t[#t+1] = "" .. k .. " = " .. dump(v, dumped)
end
return "{" .. table.concat(t, ", ") .. "}"
elseif type(o) == "boolean" then
return tostring(o)
elseif type(o) == "function" then
return "<function>"
elseif type(o) == "userdata" then
return "<userdata>"
elseif type(o) == "nil" then
return "nil"
else
error("cannot dump a " .. type(o))
return nil
end
end
--
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-- Built-in node definitions. Also defined in C.
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--
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minetest.register_nodedef_defaults({
-- name intentionally not defined here
drawtype = "normal",
visual_scale = 1.0,
tile_images = {"unknown_block.png"},
inventory_image = "unknown_block.png",
special_materials = {
{image="", backface_culling=true},
{image="", backface_culling=true},
},
alpha = 255,
post_effect_color = {a=0, r=0, g=0, b=0},
paramtype = "none",
is_ground_content = false,
light_propagates = false,
sunlight_propagates = false,
walkable = true,
pointable = true,
diggable = true,
climbable = false,
buildable_to = false,
wall_mounted = false,
often_contains_mineral = false,
dug_item = "",
extra_dug_item = "",
extra_dug_item_rarity = 2,
metadata_name = "",
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liquidtype = "none",
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liquid_alternative_flowing = "",
liquid_alternative_source = "",
liquid_viscosity = 0,
light_source = 0,
damage_per_second = 0,
selection_box = {type="regular"},
material = {
diggablity = "normal",
weight = 0,
crackiness = 0,
crumbliness = 0,
cuttability = 0,
flammability = 0,
},
cookresult_item = "", -- Cannot be cooked
furnace_cooktime = 3.0,
furnace_burntime = -1, -- Cannot be used as fuel
})
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minetest.register_node("air", {
drawtype = "airlike",
paramtype = "light",
light_propagates = true,
sunlight_propagates = true,
walkable = false,
pointable = false,
diggable = false,
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buildable_to = true,
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air_equivalent = true,
})
minetest.register_node("ignore", {
drawtype = "airlike",
paramtype = "none",
light_propagates = false,
sunlight_propagates = false,
walkable = false,
pointable = false,
diggable = false,
buildable_to = true, -- A way to remove accidentally placed ignores
air_equivalent = true,
})
--
-- stackstring manipulation functions
-- example stackstring: 'craft "apple" 4'
-- example item: {type="craft", name="apple"}
-- example item: {type="tool", name="SteelPick", wear="23272"}
--
function stackstring_take_item(stackstring)
if stackstring == nil then
return '', nil
end
local stacktype = nil
stacktype = string.match(stackstring,
'([%a%d]+)')
if stacktype == "node" or stacktype == "craft" then
local itemtype = nil
local itemname = nil
local itemcount = nil
itemtype, itemname, itemcount = string.match(stackstring,
'([%a%d]+) "([^"]*)" (%d+)')
itemcount = tonumber(itemcount)
if itemcount == 0 then
return '', nil
elseif itemcount == 1 then
return '', {type=itemtype, name=itemname}
else
return itemtype.." \""..itemname.."\" "..(itemcount-1),
{type=itemtype, name=itemname}
end
elseif stacktype == "tool" then
local itemtype = nil
local itemname = nil
local itemwear = nil
itemtype, itemname, itemwear = string.match(stackstring,
'([%a%d]+) "([^"]*)" (%d+)')
itemwear = tonumber(itemwear)
return '', {type=itemtype, name=itemname, wear=itemwear}
end
end
function stackstring_put_item(stackstring, item)
if item == nil then
return stackstring, false
end
stackstring = stackstring or ''
local stacktype = nil
stacktype = string.match(stackstring,
'([%a%d]+)')
stacktype = stacktype or ''
if stacktype ~= '' and stacktype ~= item.type then
return stackstring, false
end
if item.type == "node" or item.type == "craft" then
local itemtype = nil
local itemname = nil
local itemcount = nil
itemtype, itemname, itemcount = string.match(stackstring,
'([%a%d]+) "([^"]*)" (%d+)')
itemtype = itemtype or item.type
itemname = itemname or item.name
if itemcount == nil then
itemcount = 0
end
itemcount = itemcount + 1
return itemtype.." \""..itemname.."\" "..itemcount, true
elseif item.type == "tool" then
if stacktype ~= nil then
return stackstring, false
end
local itemtype = nil
local itemname = nil
local itemwear = nil
itemtype, itemname, itemwear = string.match(stackstring,
'([%a%d]+) "([^"]*)" (%d+)')
itemwear = tonumber(itemwear)
return itemtype.." \""..itemname.."\" "..itemwear, true
end
return stackstring, false
end
function stackstring_put_stackstring(stackstring, src)
while src ~= '' do
--print("src="..dump(src))
src, item = stackstring_take_item(src)
--print("src="..dump(src).." item="..dump(item))
local success
stackstring, success = stackstring_put_item(stackstring, item)
if not success then
return stackstring, false
end
end
return stackstring, true
end
function test_stackstring()
local stack
local item
local success
stack, item = stackstring_take_item('node "TNT" 3')
assert(stack == 'node "TNT" 2')
assert(item.type == 'node')
assert(item.name == 'TNT')
stack, item = stackstring_take_item('craft "with spaces" 2')
assert(stack == 'craft "with spaces" 1')
assert(item.type == 'craft')
assert(item.name == 'with spaces')
stack, item = stackstring_take_item('craft "with spaces" 1')
assert(stack == '')
assert(item.type == 'craft')
assert(item.name == 'with spaces')
stack, item = stackstring_take_item('craft "s8df2kj3" 0')
assert(stack == '')
assert(item == nil)
stack, item = stackstring_take_item('tool "With Spaces" 32487')
assert(stack == '')
assert(item.type == 'tool')
assert(item.name == 'With Spaces')
assert(item.wear == 32487)
stack, success = stackstring_put_item('node "With Spaces" 40',
{type='node', name='With Spaces'})
assert(stack == 'node "With Spaces" 41')
assert(success == true)
stack, success = stackstring_put_item('craft "With Spaces" 40',
{type='craft', name='With Spaces'})
assert(stack == 'craft "With Spaces" 41')
assert(success == true)
stack, success = stackstring_put_item('tool "With Spaces" 32487',
{type='tool', name='With Spaces'})
assert(stack == 'tool "With Spaces" 32487')
assert(success == false)
stack, success = stackstring_put_item('node "With Spaces" 40',
{type='tool', name='With Spaces'})
assert(stack == 'node "With Spaces" 40')
assert(success == false)
assert(stackstring_put_stackstring('node "With Spaces" 2',
'node "With Spaces" 1') == 'node "With Spaces" 3')
end
test_stackstring()
--
-- craftitem helpers
--
minetest.craftitem_place_item = function(item, placer, pos)
--print("craftitem_place_item")
--print("item: " .. dump(item))
--print("placer: " .. dump(placer))
--print("pos: " .. dump(pos))
minetest.env:add_item(pos, 'craft "' .. item .. '" 1')
return true
end
minetest.craftitem_eat = function(hp_change)
return function(item, user, pointed_thing) -- closure
--print("craftitem_eat(" .. hp_change .. ")")
--print("item: " .. dump(item))
--print("user: " .. dump(user))
--print("pointed_thing: " .. dump(pointed_thing))
user:set_hp(user:get_hp() + hp_change)
return true
end
end
--
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-- Callback registration
--
function make_registration()
local t = {}
local registerfunc = function(func) table.insert(t, func) end
return t, registerfunc
end
minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
minetest.registered_on_placenodes, minetest.register_on_placenode = make_registration()
minetest.registered_on_dignodes, minetest.register_on_dignode = make_registration()
minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()
minetest.registered_on_generateds, minetest.register_on_generated = make_registration()
minetest.registered_on_newplayers, minetest.register_on_newplayer = make_registration()
minetest.registered_on_respawnplayers, minetest.register_on_respawnplayer = make_registration()
-- END