techage_modpack_ru_upd/minecart/hopperlib.lua

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--[[
Minecart
========
Copyright (C) 2019-2020 Joachim Stolberg
MIT
See license.txt for more information
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]]--
-- for lazy programmers
local M = minetest.get_meta
local RegisteredInventories = {}
-- Take the given number of items from the inv.
-- Returns nil if ItemList is empty.
function minecart.inv_take_items(inv, listname, num)
if inv:is_empty(listname) then
return nil
end
local size = inv:get_size(listname)
for idx = 1, size do
local items = inv:get_stack(listname, idx)
if items:get_count() > 0 then
local taken = items:take_item(num)
inv:set_stack(listname, idx, items)
return taken
end
end
return nil
end
function minecart.take_items(pos, param2, num)
local npos, node
if param2 then
npos, node = minecart.get_next_node(pos, (param2 + 2) % 4)
else
npos, node = pos, minetest.get_node(pos)
end
local def = RegisteredInventories[node.name]
local owner = M(pos):get_string("owner")
local inv = minetest.get_inventory({type="node", pos=npos})
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if def and inv and def.take_listname and (not def.allow_take or def.allow_take(npos, nil, owner)) then
return minecart.inv_take_items(inv, def.take_listname, num)
elseif def and def.take_item then
return def.take_item(npos, num, owner)
else
local ndef = minetest.registered_nodes[node.name]
if ndef and ndef.minecart_hopper_takeitem then
return ndef.minecart_hopper_takeitem(npos, num)
end
end
end
function minecart.put_items(pos, param2, stack)
local npos, node = minecart.get_next_node(pos, param2)
local def = RegisteredInventories[node.name]
local owner = M(pos):get_string("owner")
local inv = minetest.get_inventory({type="node", pos=npos})
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if def and inv and def.put_listname and (not def.allow_put or def.allow_put(npos, stack, owner)) then
local leftover = inv:add_item(def.put_listname, stack)
if leftover:get_count() > 0 then
return leftover
end
elseif def and def.put_item then
return def.put_item(npos, stack, owner)
elseif minecart.is_air_like(node.name) or minecart.is_nodecart_available(npos) then
minetest.add_item(npos, stack)
else
local ndef = minetest.registered_nodes[node.name]
if ndef and ndef.minecart_hopper_additem then
local leftover = ndef.minecart_hopper_additem(npos, stack)
if leftover:get_count() > 0 then
return leftover
end
else
return stack
end
end
end
function minecart.untake_items(pos, param2, stack)
local npos, node
if param2 then
npos, node = minecart.get_next_node(pos, (param2 + 2) % 4)
else
npos, node = pos, minetest.get_node(pos)
end
local def = RegisteredInventories[node.name]
local inv = minetest.get_inventory({type="node", pos=npos})
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if def and inv and def.take_listname then
return inv:add_item(def.take_listname, stack)
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elseif def and def.untake_item then
return def.untake_item(npos, stack)
else
local ndef = minetest.registered_nodes[node.name]
if ndef and ndef.minecart_hopper_untakeitem then
return ndef.minecart_hopper_untakeitem(npos, stack)
end
end
end
-- Register inventory node for hopper access
-- (for example, see below)
function minecart.register_inventory(node_names, def)
for _, name in ipairs(node_names) do
RegisteredInventories[name] = {
allow_put = def.put and def.put.allow_inventory_put,
put_listname = def.put and def.put.listname,
allow_take = def.take and def.take.allow_inventory_take,
take_listname = def.take and def.take.listname,
put_item = def.put and def.put.put_item,
take_item = def.take and def.take.take_item,
untake_item = def.take and def.take.untake_item,
}
end
end
-- Allow the hopper the access to itself
minecart.register_inventory({"minecart:hopper"}, {
put = {
allow_inventory_put = function(pos, stack, player_name)
local owner = M(pos):get_string("owner")
return owner == player_name
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end,
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listname = "main",
},
take = {
allow_inventory_take = function(pos, stack, player_name)
local owner = M(pos):get_string("owner")
return owner == player_name
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end,
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listname = "main",
},
})