homedecor_modpack/homedecor/expansion.lua

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-- selects which node was pointed at based on it being known, and either clickable or buildable_to
local function select_node(pointed_thing)
local pos = pointed_thing.under
local def = minetest.registered_nodes[minetest.get_node(pos).name]
if not def or (not def.on_rightclick and not def.buildable_to) then
pos = pointed_thing.above
def = minetest.registered_nodes[minetest.get_node(pos).name]
end
return pos, def
end
-- abstract function checking if 2 given nodes can and may be build to a place
local function is_buildable_to(placer_name, pos, def, pos2)
local def = def or minetest.registered_nodes[minetest.get_node(pos).name]
local def2 = minetest.registered_nodes[minetest.get_node(pos2).name]
return def and def.buildable_to and def2 and def2.buildable_to
and not minetest.is_protected(pos, placer_name)
and not minetest.is_protected(pos2, placer_name)
end
-- place one or two nodes if and only if both can be placed
local function stack(itemstack, placer, fdir, pos, def, pos2, node1, node2)
local placer_name = placer:get_player_name() or ""
if is_buildable_to(placer_name, pos, def, pos2) then
local fdir = fdir or minetest.dir_to_facedir(placer:get_look_dir())
minetest.set_node(pos, { name = node1, param2 = fdir })
minetest.set_node(pos2, { name = node2 or "air", param2 = node2 and fdir or nil })
-- temporary check if this is a locked node to set its infotext
local nodename = itemstack:get_name()
if string.find(nodename, "_locked") then
local meta = minetest.get_meta(pos)
meta:set_string("owner", placer_name)
meta:set_string("infotext", S("Locked Refrigerator (owned by %s)"):format(placer_name))
end
if not homedecor.expect_infinite_stacks then
itemstack:take_item()
return itemstack
end
end
end
-- Stack one node above another
-- leave the last argument nil if it's one 2m high node
function homedecor.stack_vertically(itemstack, placer, pointed_thing, node1, node2)
local pos, def = select_node(pointed_thing)
if def.on_rightclick then
return def.on_rightclick(pointed_thing.under, minetest.get_node(pos), placer, itemstack)
end
local top_pos = { x=pos.x, y=pos.y+1, z=pos.z }
return stack(itemstack, placer, nil, pos, def, top_pos, node1, node2)
end
-- Place one node right of or behind another
homedecor.fdir_to_right = {
{ 1, 0 },
{ 0, -1 },
{ -1, 0 },
{ 0, 1 },
}
homedecor.fdir_to_fwd = {
{ 0, 1 },
{ 1, 0 },
{ 0, -1 },
{ -1, 0 },
}
function homedecor.stack_sideways(itemstack, placer, pointed_thing, node1, node2, dir)
local pos, def = select_node(pointed_thing)
if def.on_rightclick then
return def.on_rightclick(pointed_thing.under, minetest.get_node(pos), placer, itemstack)
end
local fdir = minetest.dir_to_facedir(placer:get_look_dir())
local fdir_transform = dir and homedecor.fdir_to_right or homedecor.fdir_to_fwd
local pos2 = { x = pos.x + fdir_transform[fdir+1][1], y=pos.y, z = pos.z + fdir_transform[fdir+1][2] }
return stack(itemstack, placer, fdir, pos, def, pos2, node1, node2)
end