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homedecor_modpack/itemframes/init.lua
Foz 39984c356b Resolve itemframe entity duplication Fixes #405.
The ABM that replaces deleted entities in itemframes and pedestals can sometimes add multiple copies of each entity due to a race condition in which the ABM runs either before the server loads the entities or after they have been removed due to the map block being unloaded.  Due to limitations in determining when all entities have been loaded, this race condition cannot be fully avoided.  This commit converts the ABM, which ran every fifteen seconds, into and LBM that runs on every load and adds a check to the entities when they are loaded such that only the first loaded entity will be kept and any additional copies delete themselves during the loading process.
2018-05-13 09:34:18 -04:00

302 lines
9.0 KiB
Lua

local S = homedecor_i18n.gettext
local tmp = {}
screwdriver = screwdriver or {}
minetest.register_entity("itemframes:item",{
hp_max = 1,
visual="wielditem",
visual_size={x = 0.33, y = 0.33},
collisionbox = {0, 0, 0, 0, 0, 0},
physical = false,
textures = {"air"},
on_activate = function(self, staticdata)
if tmp.nodename ~= nil and tmp.texture ~= nil then
self.nodename = tmp.nodename
tmp.nodename = nil
self.texture = tmp.texture
tmp.texture = nil
else
if staticdata ~= nil and staticdata ~= "" then
local data = staticdata:split(';')
if data and data[1] and data[2] then
self.nodename = data[1]
self.texture = data[2]
end
end
end
if self.texture ~= nil then
self.object:set_properties({textures = {self.texture}})
end
if self.nodename == "itemframes:pedestal" then
self.object:set_properties({automatic_rotate = 1})
end
if self.texture ~= nil and self.nodename ~= nil then
local entity_pos = vector.round(self.object:get_pos())
local objs = minetest.get_objects_inside_radius(entity_pos, 0.5)
for _, obj in ipairs(objs) do
if obj ~= self.object and
obj:get_luaentity() and
obj:get_luaentity().name == "itemframes:item" and
obj:get_luaentity().nodename == self.nodename and
obj:get_properties() and
obj:get_properties().textures and
obj:get_properties().textures[1] == self.texture then
minetest.log("action","[itemframes] Removing extra " ..
self.texture .. " found in " .. self.nodename .. " at " ..
minetest.pos_to_string(entity_pos))
self.object:remove()
break
end
end
end
end,
get_staticdata = function(self)
if self.nodename ~= nil and self.texture ~= nil then
return self.nodename .. ';' .. self.texture
end
return ""
end,
})
local facedir = {}
facedir[0] = {x = 0, y = 0, z = 1}
facedir[1] = {x = 1, y = 0, z = 0}
facedir[2] = {x = 0, y = 0, z = -1}
facedir[3] = {x = -1, y = 0, z = 0}
local remove_item = function(pos, node)
local objs = nil
if node.name == "itemframes:frame" then
objs = minetest.get_objects_inside_radius(pos, .5)
elseif node.name == "itemframes:pedestal" then
objs = minetest.get_objects_inside_radius({x=pos.x,y=pos.y+1,z=pos.z}, .5)
end
if objs then
for _, obj in ipairs(objs) do
if obj and obj:get_luaentity() and obj:get_luaentity().name == "itemframes:item" then
obj:remove()
end
end
end
end
local update_item = function(pos, node)
remove_item(pos, node)
local meta = minetest.get_meta(pos)
if meta:get_string("item") ~= "" then
if node.name == "itemframes:frame" then
local posad = facedir[node.param2]
if not posad then return end
pos.x = pos.x + posad.x * 6.5 / 16
pos.y = pos.y + posad.y * 6.5 / 16
pos.z = pos.z + posad.z * 6.5 / 16
elseif node.name == "itemframes:pedestal" then
pos.y = pos.y + 12 / 16 + 0.33
end
tmp.nodename = node.name
tmp.texture = ItemStack(meta:get_string("item")):get_name()
local e = minetest.add_entity(pos,"itemframes:item")
if node.name == "itemframes:frame" then
local yaw = math.pi * 2 - node.param2 * math.pi / 2
e:setyaw(yaw)
end
end
end
local drop_item = function(pos, node)
local meta = minetest.get_meta(pos)
if meta:get_string("item") ~= "" then
if node.name == "itemframes:frame" then
minetest.add_item(pos, meta:get_string("item"))
elseif node.name == "itemframes:pedestal" then
minetest.add_item({x=pos.x,y=pos.y+1,z=pos.z}, meta:get_string("item"))
end
meta:set_string("item","")
end
remove_item(pos, node)
end
minetest.register_node("itemframes:frame",{
description = S("Item frame"),
drawtype = "nodebox",
node_box = {
type = "fixed",
fixed = {-0.5, -0.5, 7/16, 0.5, 0.5, 0.5}
},
selection_box = {
type = "fixed",
fixed = {-0.5, -0.5, 7/16, 0.5, 0.5, 0.5}
},
tiles = {"itemframes_frame.png"},
inventory_image = "itemframes_frame.png",
wield_image = "itemframes_frame.png",
paramtype = "light",
paramtype2 = "facedir",
sunlight_propagates = true,
groups = {choppy = 2, dig_immediate = 2},
legacy_wallmounted = true,
sounds = default.node_sound_wood_defaults(),
on_rotate = screwdriver.disallow,
after_place_node = function(pos, placer, itemstack)
local meta = minetest.get_meta(pos)
meta:set_string("owner",placer:get_player_name())
meta:set_string("infotext", S("Item frame (owned by @1)", placer:get_player_name()))
end,
on_rightclick = function(pos, node, clicker, itemstack)
if not itemstack then return end
local meta = minetest.get_meta(pos)
local name = clicker and clicker:get_player_name()
if name == meta:get_string("owner") or
minetest.check_player_privs(name, "protection_bypass") then
drop_item(pos,node)
local s = itemstack:take_item()
meta:set_string("item",s:to_string())
update_item(pos,node)
end
return itemstack
end,
on_punch = function(pos,node,puncher)
local meta = minetest.get_meta(pos)
local name = puncher and puncher:get_player_name()
if name == meta:get_string("owner") or
minetest.check_player_privs(name, "protection_bypass") then
drop_item(pos, node)
end
end,
can_dig = function(pos,player)
if not player then return end
local name = player and player:get_player_name()
local meta = minetest.get_meta(pos)
return name == meta:get_string("owner") or
minetest.check_player_privs(name, "protection_bypass")
end,
on_destruct = function(pos)
local meta = minetest.get_meta(pos)
local node = minetest.get_node(pos)
if meta:get_string("item") ~= "" then
drop_item(pos, node)
end
end,
})
minetest.register_node("itemframes:pedestal",{
description = S("Pedestal"),
drawtype = "nodebox",
node_box = {
type = "fixed", fixed = {
{-7/16, -8/16, -7/16, 7/16, -7/16, 7/16}, -- bottom plate
{-6/16, -7/16, -6/16, 6/16, -6/16, 6/16}, -- bottom plate (upper)
{-0.25, -6/16, -0.25, 0.25, 11/16, 0.25}, -- pillar
{-7/16, 11/16, -7/16, 7/16, 12/16, 7/16}, -- top plate
}
},
--selection_box = {
-- type = "fixed",
-- fixed = {-7/16, -0.5, -7/16, 7/16, 12/16, 7/16}
--},
tiles = {"itemframes_pedestal.png"},
paramtype = "light",
groups = {cracky = 3},
sounds = default.node_sound_stone_defaults(),
on_rotate = screwdriver.disallow,
after_place_node = function(pos, placer, itemstack)
local meta = minetest.get_meta(pos)
meta:set_string("owner",placer:get_player_name())
meta:set_string("infotext", S("Pedestal (owned by @1)", placer:get_player_name()))
end,
on_rightclick = function(pos, node, clicker, itemstack)
if not itemstack then return end
local meta = minetest.get_meta(pos)
local name = clicker and clicker:get_player_name()
if name == meta:get_string("owner") or
minetest.check_player_privs(name, "protection_bypass") then
drop_item(pos,node)
local s = itemstack:take_item()
meta:set_string("item",s:to_string())
update_item(pos,node)
end
return itemstack
end,
on_punch = function(pos,node,puncher)
local meta = minetest.get_meta(pos)
local name = puncher and puncher:get_player_name()
if name == meta:get_string("owner") or
minetest.check_player_privs(name, "protection_bypass") then
drop_item(pos,node)
end
end,
can_dig = function(pos,player)
if not player then return end
local name = player and player:get_player_name()
local meta = minetest.get_meta(pos)
return name == meta:get_string("owner") or
minetest.check_player_privs(name, "protection_bypass")
end,
on_destruct = function(pos)
local meta = minetest.get_meta(pos)
local node = minetest.get_node(pos)
if meta:get_string("item") ~= "" then
drop_item(pos, node)
end
end,
})
-- automatically restore entities lost from frames/pedestals
-- due to /clearobjects or similar
minetest.register_lbm({
label = "Maintain itemframe and pedestal entities",
name = "itemframes:maintain_entities",
nodenames = {"itemframes:frame", "itemframes:pedestal"},
run_at_every_load = true,
action = function(pos, node)
minetest.after(0,
function(pos, node)
local meta = minetest.get_meta(pos)
local itemstring = meta:get_string("item")
if itemstring ~= "" then
local entity_pos = pos
if node.name == "itemframes:pedestal" then
entity_pos = {x=pos.x,y=pos.y+1,z=pos.z}
end
local objs = minetest.get_objects_inside_radius(entity_pos, 0.5)
if #objs == 0 then
minetest.log("action","[itemframes] Replacing missing " ..
itemstring .. " in " .. node.name .. " at " ..
minetest.pos_to_string(pos))
update_item(pos, node)
end
end
end,
pos, node)
end
})
-- crafts
minetest.register_craft({
output = 'itemframes:frame',
recipe = {
{'group:stick', 'group:stick', 'group:stick'},
{'group:stick', 'default:paper', 'default:stick'},
{'group:stick', 'group:stick', 'group:stick'},
}
})
minetest.register_craft({
output = 'itemframes:pedestal',
recipe = {
{'default:stone', 'default:stone', 'default:stone'},
{'', 'default:stone', ''},
{'default:stone', 'default:stone', 'default:stone'},
}
})
-- stop mesecon pistons from pushing itemframes and pedestals
if minetest.get_modpath("mesecons_mvps") then
mesecon.register_mvps_stopper("itemframes:frame")
mesecon.register_mvps_stopper("itemframes:pedestal")
end