moreblocks/stairsplus/api/legacy.lua

110 lines
3.3 KiB
Lua
Raw Normal View History

2022-06-17 02:46:09 +02:00
local api = stairsplus.api
local legacy_mode = stairsplus.settings.legacy_mode
local legacy_place_mechanic = stairsplus.settings.legacy_place_mechanic
if legacy_place_mechanic then
local wall_right_dirmap = {9, 18, 7, 12}
local wall_left_dirmap = {11, 16, 5, 14}
local ceil_dirmap = {20, 23, 22, 21}
function api.on_place(itemstack, placer, pointed_thing)
if not minetest.is_player(placer) then
return minetest.item_place(itemstack, placer, pointed_thing)
end
local controls = placer:get_player_control()
local sneak = controls.sneak
local aux = controls.aux1
local shaped_node_name = itemstack:get_name()
local shape = api.get_shape_of_shaped_node(shaped_node_name)
local under = pointed_thing.under
local under_node = minetest.get_node(under)
local under_shape = api.get_shape_of_shaped_node(under_node.name)
local same_cat = shape == under_shape
-- standard (floor) facedir, also used for sneak placement against the lower half of the wall
local p2 = placer and minetest.dir_to_facedir(placer:get_look_dir()) or 0
-- check which face and which quadrant we are interested in
-- this is used both to check if we're handling parallel placement in the same-category case,
-- and in general for sneak placement
local face_pos = minetest.pointed_thing_to_face_pos(placer, pointed_thing)
local face_off = vector.subtract(face_pos, under)
-- we cannot trust face_off to tell us the correct directionif the
-- under node has a non-standard shape, so use the distance between under and above
local wallmounted = minetest.dir_to_wallmounted(vector.subtract(pointed_thing.above, under))
if same_cat and not aux then
p2 = under_node.param2
-- flip if placing above or below an upright or upside-down node
-- TODO should we also flip when placing next to a side-mounted node?
if wallmounted < 2 then
if p2 < 4 then
p2 = (p2 + 2) % 4
p2 = ceil_dirmap[p2 + 1]
elseif p2 > 19 then
p2 = ceil_dirmap[p2 - 19] - 20
p2 = (p2 + 2) % 4
end
end
else
-- for same-cat placement, aux is used to disable param2 copying
if same_cat then
aux = not aux
end
local remap = nil
-- standard placement against the wall
local use_wallmap = (wallmounted > 1 and not sneak) or (wallmounted < 2 and sneak)
-- standard placement against the ceiling, or sneak placement against the upper half of the wall
local use_ceilmap = wallmounted == 1 and not sneak
use_ceilmap = use_ceilmap or (wallmounted > 1 and sneak and face_off.y > 0)
if use_wallmap then
local left = (p2 == 0 and face_off.x < 0) or
(p2 == 1 and face_off.z > 0) or
(p2 == 2 and face_off.x > 0) or
(p2 == 3 and face_off.z < 0)
if aux then
left = not left
end
remap = left and wall_left_dirmap or wall_right_dirmap
elseif use_ceilmap then
remap = ceil_dirmap
end
if aux then
p2 = (p2 + 2) % 4
end
if remap then
p2 = remap[p2 + 1]
end
end
return minetest.item_place(itemstack, placer, pointed_thing, p2)
end
else
api.on_place = minetest.item_place
end
function api.scale_light(light_source, shape_def)
if not light_source or light_source == 0 then
return 0
elseif legacy_mode then
return light_source - 1
end
return math.max(1, math.min(math.round(light_source * shape_def.eighths / 4), light_source))
end