technic/wrench/init.lua

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--[[
Wrench mod
Adds a wrench that allows the player to pickup nodes that contain an inventory
with items or metadata that needs perserving.
The wrench has the same tool capability as the normal hand.
To pickup a node simply right click on it. If the node contains a formspec,
you will need to shift+right click instead.
Because it enables arbitrary nesting of chests, and so allows the player
to carry an unlimited amount of material at once, this wrench is not
available to survival-mode players.
--]]
local LATEST_SERIALIZATION_VERSION = 1
wrench = {}
local modpath = minetest.get_modpath(minetest.get_current_modname())
dofile(modpath.."/support.lua")
dofile(modpath.."/technic.lua")
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-- Boilerplate to support localized strings if intllib mod is installed.
local S
if intllib then
S = intllib.Getter()
else
S = function(s) return s end
end
local function get_meta_type(name, metaname)
local def = wrench.registered_nodes[name]
if not def or not def.metas or not def.metas[metaname] then
return nil
end
return def.metas[metaname]
end
local function get_pickup_name(name)
return "wrench:picked_up_"..(name:gsub(":", "_"))
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end
local function restore(pos, placer, itemstack)
local name = itemstack:get_name()
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
local data = minetest.deserialize(itemstack:get_metadata())
minetest.set_node(pos, {name = data.name})
local lists = data.lists
for listname, list in pairs(lists) do
inv:set_list(listname, list)
end
for name, value in pairs(data.metas) do
local meta_type = get_meta_type(data.name, name)
if meta_type == wrench.META_TYPE_INT then
meta:set_int(name, value)
elseif meta_type == wrench.META_TYPE_FLOAT then
meta:set_float(name, value)
elseif meta_type == wrench.META_TYPE_STRING then
meta:set_string(name, value)
end
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end
itemstack:take_item()
return itemstack
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end
for name, info in pairs(wrench.registered_nodes) do
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local olddef = minetest.registered_nodes[name]
if olddef then
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local newdef = {}
for key, value in pairs(olddef) do
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newdef[key] = value
end
newdef.stack_max = 1
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newdef.description = S("%s with items"):format(newdef.description)
newdef.groups = {}
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newdef.groups.not_in_creative_inventory = 1
newdef.on_construct = nil
newdef.on_destruct = nil
newdef.after_place_node = restore
minetest.register_node(":"..get_pickup_name(name), newdef)
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end
end
minetest.register_tool("wrench:wrench", {
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description = S("Wrench"),
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inventory_image = "technic_wrench.png",
tool_capabilities = {
full_punch_interval = 0.9,
max_drop_level = 0,
groupcaps = {
crumbly = {times={[2]=3.00, [3]=0.70}, uses=0, maxlevel=1},
snappy = {times={[3]=0.40}, uses=0, maxlevel=1},
oddly_breakable_by_hand = {times={[1]=7.00,[2]=4.00,[3]=1.40},
uses=0, maxlevel=3}
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},
damage_groups = {fleshy=1},
},
on_place = function(itemstack, placer, pointed_thing)
local pos = pointed_thing.under
if not placer or not pos then
return
end
if minetest.is_protected(pos, placer:get_player_name()) then
minetest.record_protection_violation(pos, placer:get_player_name())
return
end
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local name = minetest.get_node(pos).name
local def = wrench.registered_nodes[name]
if not def then
return
end
local stack = ItemStack(get_pickup_name(name))
local player_inv = placer:get_inventory()
if not player_inv:room_for_item("main", stack) then
return
end
local meta = minetest.get_meta(pos)
if def.owned then
local owner = meta:get_string("owner")
if owner and owner ~= placer:get_player_name() then
minetest.log("action", placer:get_player_name()..
" tried to pick up a owned node belonging to "..
owner.." at "..
minetest.pos_to_string(pos))
return
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end
end
local metadata = {}
metadata.name = name
metadata.version = LATEST_SERIALIZATION_VERSION
local inv = meta:get_inventory()
local lists = {}
for _, listname in pairs(def.lists or {}) do
if not inv:is_empty(listname) then
empty = false
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end
local list = inv:get_list(listname)
for i, stack in pairs(list) do
list[i] = stack:to_string()
end
lists[listname] = list
end
metadata.lists = lists
local metas = {}
for name, meta_type in pairs(def.metas or {}) do
if meta_type == wrench.META_TYPE_INT then
metas[name] = meta:get_int(name)
elseif meta_type == wrench.META_TYPE_FLOAT then
metas[name] = meta:get_float(name)
elseif meta_type == wrench.META_TYPE_STRING then
metas[name] = meta:get_string(name)
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end
end
metadata.metas = metas
stack:set_metadata(minetest.serialize(metadata))
minetest.remove_node(pos)
itemstack:add_wear(65535 / 20)
player_inv:add_item("main", stack)
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return itemstack
end,
})