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Add entity inventories

light_dump
cora 2022-09-23 05:41:52 +02:00
parent 85cf7fa36e
commit c4bad91b8c
3 changed files with 101 additions and 0 deletions

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mcl_entity_invs
===============
Inventories for your entities. It's simple. Depend on mcl_entity_invs and register your entity like so:
* mcl_entity_invs.register_inv("entity:name","Title shown in formspec",inventory_size)
It works by setting up a detached inventory per entity which is accessed by an id/hash generated from the entities position at creation, the progressed gametime at creation and a random salt.

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mcl_entity_invs = {}
local function check_distance(inv,player,count)
for _,o in pairs(minetest.get_objects_inside_radius(player:get_pos(),5)) do
local l = o:get_luaentity()
if l and l._inv_id and inv:get_location().name == l._inv_id then return count end
end
return 0
end
local inv_callbacks = {
allow_take = function(inv, listname, index, stack, player)
return check_distance(inv,player,stack:get_count())
end,
allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
return check_distance(inv,player,count)
end,
allow_put = function(inv, listname, index, stack, player)
return check_distance(inv,player,stack:get_count())
end,
}
local function load_inv(ent,size)
if not ent._inv_id then return end
local inv = minetest.get_inventory({type="detached", name=ent._inv_id})
if not inv then
inv = minetest.create_detached_inventory(ent._inv_id, inv_callbacks)
inv:set_size("main", size)
if ent._items then
inv:set_list("main",ent._items)
end
end
return inv
end
local function show_form(ent,player,show_name)
if not ent._inv_id then return end
local playername = player:get_player_name()
local formspec = "size[9,8.75]"
.. "label[0,0;" .. minetest.formspec_escape(
minetest.colorize("#313131", show_name)) .. "]"
.. "list[detached:"..ent._inv_id..";main;0,0.5;9,3;]"
.. mcl_formspec.get_itemslot_bg(0,0.5,9,3)
.. "label[0,4.0;" .. minetest.formspec_escape(
minetest.colorize("#313131", "Inventory")) .. "]"
.. "list[current_player;main;0,4.5;9,3;9]"
.. mcl_formspec.get_itemslot_bg(0,4.5,9,3)
.. "list[current_player;main;0,7.74;9,1;]"
.. mcl_formspec.get_itemslot_bg(0,7.74,9,1)
.. "listring[detached:"..ent._inv_id..";main]"
.. "listring[current_player;main]"
minetest.show_formspec(playername,ent._inv_id,formspec)
end
function mcl_entity_invs.register_inv(entity_name,show_name,size)
local old_oa = minetest.registered_entities[entity_name].on_activate
minetest.registered_entities[entity_name].on_activate = function(self,staticdata,dtime_s)
local d = minetest.deserialize(staticdata)
if type(d) == "table" and d._inv_id then
self._inv_id = d._inv_id
self._items = d._items
else
self._inv_id="entity_inv_"..minetest.sha1(minetest.get_gametime()..minetest.pos_to_string(self.object:get_pos())..tostring(math.random()))
--gametime and position for collision safety and math.random salt to protect against position brute-force
end
if self._inv_id then
self._inv = load_inv(self,size)
end
if old_oa then return old_oa(self,clicker) end
end
local old_rc = minetest.registered_entities[entity_name].on_rightclick
minetest.registered_entities[entity_name].on_rightclick = function(self,clicker)
show_form(self,clicker,show_name)
if old_rc then return old_rc(self,clicker) end
end
local old_gsd = minetest.registered_entities[entity_name].get_staticdata
minetest.registered_entities[entity_name].get_staticdata = function(self)
local old_sd = old_gsd(self)
local d = minetest.deserialize(old_sd)
assert(type(d) == "table","Entyinvs currently only works with entities that return a (serialized) table in get_staticdata. "..tostring(self.name).." returned: "..tostring(old_sd))
d._inv_id = self._inv_id
d._items = {}
for i,it in pairs(self._inv:get_list("main")) do
d._items[i] = it:to_string()
end
return minetest.serialize(d)
end
end

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name = mcl_entity_invs
author = cora
depends = mcl_formspec