VoxeLibre/mods/mcl_util/init.lua

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mcl_util = {}
-- Based on minetest.rotate_and_place
--[[
Attempt to predict the desired orientation of the pillar-like node
defined by `itemstack`, and place it accordingly in one of 3 possible
orientations (X, Y or Z).
Stacks are handled normally if the `infinitestacks`
field is false or omitted (else, the itemstack is not changed).
* `invert_wall`: if `true`, place wall-orientation on the ground and ground-
orientation on wall
This function is a simplified version of minetest.rotate_and_place.
The Minetest function is seen as inappropriate because this includes mirror
images of possible orientations, causing problems with pillar shadings.
]]
function mcl_util.rotate_axis_and_place(itemstack, placer, pointed_thing, infinitestacks, invert_wall)
local unode = minetest.get_node_or_nil(pointed_thing.under)
if not unode then
return
end
local undef = minetest.registered_nodes[unode.name]
if undef and undef.on_rightclick then
undef.on_rightclick(pointed_thing.under, unode, placer,
itemstack, pointed_thing)
return
end
local fdir = minetest.dir_to_facedir(placer:get_look_dir())
local wield_name = itemstack:get_name()
local above = pointed_thing.above
local under = pointed_thing.under
local is_x = (above.x ~= under.x)
local is_y = (above.y ~= under.y)
local is_z = (above.z ~= under.z)
local anode = minetest.get_node_or_nil(above)
if not anode then
return
end
local pos = pointed_thing.above
local node = anode
if undef and undef.buildable_to then
pos = pointed_thing.under
node = unode
end
if minetest.is_protected(pos, placer:get_player_name()) then
minetest.record_protection_violation(pos, placer:get_player_name())
return
end
local ndef = minetest.registered_nodes[node.name]
if not ndef or not ndef.buildable_to then
return
end
local p2
if is_y then
if invert_wall then
if fdir == 3 or fdir == 1 then
p2 = 12
else
p2 = 6
end
end
elseif is_x then
if invert_wall then
p2 = 0
else
p2 = 12
end
elseif is_z then
if invert_wall then
p2 = 0
else
p2 = 6
end
end
minetest.set_node(pos, {name = wield_name, param2 = p2})
if not infinitestacks then
itemstack:take_item()
return itemstack
end
end
-- Wrapper of above function for use as `on_place` callback (Recommended).
-- Similar to minetest.rotate_node.
function mcl_util.rotate_axis(itemstack, placer, pointed_thing)
mcl_util.rotate_axis_and_place(itemstack, placer, pointed_thing,
core.setting_getbool("creative_mode"),
placer:get_player_control().sneak)
return itemstack
end
-- Moves a single item from one inventory to another
-- Returns true on success and false on failure
function mcl_util.move_item(source_inventory, source_list, source_stack_id, destination_inventory, destination_list)
if not source_inventory:is_empty(source_list) then
local stack = source_inventory:get_stack(source_list, source_stack_id)
local item = stack:get_name()
if not stack:is_empty() then
if not destination_inventory:room_for_item(destination_list, item) then
return false
end
stack:take_item()
source_inventory:set_stack(source_list, source_stack_id, stack)
destination_inventory:add_item(destination_list, item)
return true
end
end
return false
end