added support for mirrored and rotated build

This commit is contained in:
Alexander Weber 2017-07-27 14:36:45 +02:00
parent 30db22827c
commit edcb6a38d9
4 changed files with 320 additions and 121 deletions

View File

@ -67,6 +67,8 @@ License: LGPLv2
- plan_obj.data.groundnode_count - count of nodes found for ground_y determination (internal)
- plan_obj.data.min_pos - minimal {x,y,z} vector
- plan_obj.data.max_pos - maximal {x,y,z} vector
- plan_obj.facedir - Plan rotation - x+ axis supported only (values 0-3)
- plan_obj.mirrored - (bool) Mirrored build - mirror to z-axis. Note: if you need x-axis mirror - just rotate the building by 2 in addition
## Node object
### class-methods
@ -83,6 +85,7 @@ License: LGPLv2
- node_obj:remove_from_plan() - remove this node from plan
- node_obj:get_under() - returns the node under this one if exists in plan
- node_obj:get_above() - returns the node above this one if exists in plan
- node_obj:rotate_facedir(facedir) - rotate the node - is internally used for plan rotation in get_mapped() - supported 0-3 (x+ axis) only
### object-attributes
- node_obj.name - original node name without mapping

View File

@ -8,114 +8,144 @@ local mapping = {}
mapping.c_free_item = "default:cloud"
-----------------------------------------------
-- door compatibility. Seems the old doors was facedir and now the wallmounted values should be used
-- door compatibility. Seems the old doors was facedir and now the wallmounted values should be used (custom_function)
-----------------------------------------------
local function __param2_wallmounted_to_facedir(nodeinfo, pos, wpos)
if nodeinfo.param2 == 0 then -- +y?
nodeinfo.param2 = 0
elseif nodeinfo.param2 == 1 then -- -y?
nodeinfo.param2 = 1
elseif nodeinfo.param2 == 2 then --unsure
nodeinfo.param2 = 3
elseif nodeinfo.param2 == 3 then --unsure
nodeinfo.param2 = 1
elseif nodeinfo.param2 == 4 then --unsure
nodeinfo.param2 = 2
elseif nodeinfo.param2 == 5 then --unsure
nodeinfo.param2 = 0
local function __param2_wallmounted_to_facedir(mapped, node)
if mapped.param2 == 0 then -- +y?
mapped.param2 = 0
elseif mapped.param2 == 1 then -- -y?
mapped.param2 = 1
elseif mapped.param2 == 2 then --unsure
mapped.param2 = 3
elseif mapped.param2 == 3 then --unsure
mapped.param2 = 1
elseif mapped.param2 == 4 then --unsure
mapped.param2 = 2
elseif mapped.param2 == 5 then --unsure
mapped.param2 = 0
end
end
local function __torches_compat(nodeinfo, pos, wpos)
-----------------------------------------------
-- Torches compatibility (custom_function)
-----------------------------------------------
local function __torches_compat(mapped, node)
-- from default:3dtorch-lbm
if nodeinfo.param2 == 0 then
nodeinfo.name = "default:torch_ceiling"
elseif nodeinfo.param2 == 1 then
nodeinfo.name = "default:torch"
if mapped.param2 == 0 then
mapped.name = "default:torch_ceiling"
elseif mapped.param2 == 1 then
mapped.name = "default:torch"
else
nodeinfo.name = "default:torch_wall"
mapped.name = "default:torch_wall"
end
end
local u = {}
local unknown_nodes_data = u
-- Fallback nodes replacement of unknown nodes
-- Maybe it is beter to use aliases for unknown notes. But anyway
u["xpanes:pane_glass_10"] = { name = "xpanes:pane_10" }
u["xpanes:pane_glass_5"] = { name = "xpanes:pane_5" }
u["beds:bed_top_blue"] = { name = "beds:bed_top" }
u["beds:bed_bottom_blue"] = { name = "beds:bed_bottom" }
u["homedecor:table_lamp_max"] = { name = "homedecor:table_lamp_white_max" }
u["homedecor:refrigerator"] = { name = "homedecor:refrigerator_steel" }
-----------------------------------------------
-- Unknown nodes mapping
-----------------------------------------------
local unknown_nodes_data = {
-- Fallback / Compatibility nodes replacement for ingame unknown nodes
["xpanes:pane_glass_10"] = { name = "xpanes:pane_10" },
["xpanes:pane_glass_5"] = { name = "xpanes:pane_5" },
["beds:bed_top_blue"] = { name = "beds:bed_top" },
["beds:bed_bottom_blue"] = { name = "beds:bed_bottom" },
u["ethereal:green_dirt"] = { name = "default:dirt_with_grass" }
["homedecor:table_lamp_max"] = { name = "homedecor:table_lamp_white_max" },
["homedecor:refrigerator"] = { name = "homedecor:refrigerator_steel" },
u["doors:door_wood_b_c"] = {name = "doors:door_wood_a", {["meta"] = {["fields"] = {["state"] = "1"}}}, custom_function = __param2_wallmounted_to_facedir } --closed
u["doors:door_wood_b_o"] = {name = "doors:door_wood_b", {["meta"] = {["fields"] = {["state"] = "3"}}}, custom_function = __param2_wallmounted_to_facedir } --open
u["doors:door_wood_b_1"] = {name = "doors:door_wood_a", {["meta"] = {["fields"] = {["state"] = "0"}}}} --Left door closed
u["doors:door_wood_b_2"] = {name = "doors:door_wood_b", {["meta"] = {["fields"] = {["state"] = "2"}}}} --right door closed
u["doors:door_wood_a_c"] = {name = "doors:hidden" }
u["doors:door_wood_a_o"] = {name = "doors:hidden" }
u["doors:door_wood_t_1"] = {name = "doors:hidden" }
u["doors:door_wood_t_2"] = {name = "doors:hidden" }
["ethereal:green_dirt"] = { name = "default:dirt_with_grass" },
u["doors:door_glass_b_c"] = {name = "doors:door_glass_a", {["meta"] = {["fields"] = {["state"] = "1"}}}, custom_function = __param2_wallmounted_to_facedir } --closed
u["doors:door_glass_b_o"] = {name = "doors:door_glass_b", {["meta"] = {["fields"] = {["state"] = "3"}}}, custom_function = __param2_wallmounted_to_facedir } --open
u["doors:door_glass_b_1"] = {name = "doors:door_glass_a", {["meta"] = {["fields"] = {["state"] = "0"}}}} --Left door closed
u["doors:door_glass_b_2"] = {name = "doors:door_glass_b", {["meta"] = {["fields"] = {["state"] = "2"}}}} --right door closed
u["doors:door_glass_a_c"] = {name = "doors:hidden" }
u["doors:door_glass_a_o"] = {name = "doors:hidden" }
u["doors:door_glass_t_1"] = {name = "doors:hidden" }
u["doors:door_glass_t_2"] = {name = "doors:hidden" }
["doors:door_wood_b_c"] = {name = "doors:door_wood_a", meta = {fields = {state = 1}}, custom_function = __param2_wallmounted_to_facedir }, --closed
["doors:door_wood_b_o"] = {name = "doors:door_wood_b", meta = {fields = {state = 3}}, custom_function = __param2_wallmounted_to_facedir }, --open
["doors:door_wood_b_1"] = {name = "doors:door_wood_a", meta = {fields = {state = 0}}}, --Left door closed
["doors:door_wood_b_2"] = {name = "doors:door_wood_b", meta = {fields = {state = 2}}}, --right door closed
["doors:door_wood_a_c"] = {name = "doors:hidden" },
["doors:door_wood_a_o"] = {name = "doors:hidden" },
["doors:door_wood_t_1"] = {name = "doors:hidden" },
["doors:door_wood_t_2"] = {name = "doors:hidden" },
u["doors:door_steel_b_c"] = {name = "doors:door_steel_a", {["meta"] = {["fields"] = {["state"] = "1"}}}, custom_function = __param2_wallmounted_to_facedir } --closed
u["doors:door_steel_b_o"] = {name = "doors:door_steel_b", {["meta"] = {["fields"] = {["state"] = "3"}}}, custom_function = __param2_wallmounted_to_facedir } --open
u["doors:door_steel_b_1"] = {name = "doors:door_steel_a", {["meta"] = {["fields"] = {["state"] = "0"}}}} --Left door closed
u["doors:door_steel_b_2"] = {name = "doors:door_steel_b", {["meta"] = {["fields"] = {["state"] = "2"}}}} --right door closed
u["doors:door_steel_a_c"] = {name = "doors:hidden" }
u["doors:door_steel_a_o"] = {name = "doors:hidden" }
u["doors:door_steel_t_1"] = {name = "doors:hidden" }
u["doors:door_steel_t_2"] = {name = "doors:hidden" }
["doors:door_glass_b_c"] = {name = "doors:door_glass_a", meta = {fields = {state = 1}}, custom_function = __param2_wallmounted_to_facedir }, --closed
["doors:door_glass_b_o"] = {name = "doors:door_glass_b", meta = {fields = {state = 3}}, custom_function = __param2_wallmounted_to_facedir }, --open
["doors:door_glass_b_1"] = {name = "doors:door_glass_a", meta = {fields = {state = 0}}}, --Left door closed
["doors:door_glass_b_2"] = {name = "doors:door_glass_b", meta = {fields = {state = 2}}}, --right door closed
["doors:door_glass_a_c"] = {name = "doors:hidden" },
["doors:door_glass_a_o"] = {name = "doors:hidden" },
["doors:door_glass_t_1"] = {name = "doors:hidden" },
["doors:door_glass_t_2"] = {name = "doors:hidden" },
u["fallback"] = {name = "air" }
["doors:door_steel_b_c"] = {name = "doors:door_steel_a", meta = {fields = {state = 1}}, custom_function = __param2_wallmounted_to_facedir }, --closed
["doors:door_steel_b_o"] = {name = "doors:door_steel_b", meta = {fields = {state = 3}}, custom_function = __param2_wallmounted_to_facedir }, --open
["doors:door_steel_b_1"] = {name = "doors:door_steel_a", meta = {fields = {state = 0}}}, --Left door closed
["doors:door_steel_b_2"] = {name = "doors:door_steel_b", meta = {fields = {state = 2}}}, --right door closed
["doors:door_steel_a_c"] = {name = "doors:hidden" },
["doors:door_steel_a_o"] = {name = "doors:hidden" },
["doors:door_steel_t_1"] = {name = "doors:hidden" },
["doors:door_steel_t_2"] = {name = "doors:hidden" },
local c = {}
local default_replacements = c
["fallback"] = {name = "air" },
}
-----------------------------------------------
-- Default Replacements and adjustments
-----------------------------------------------
local default_replacements = {
-- "name" and "cost_item" are optional.
-- if name is missed it will not be changed
-- if cost_item is missed it will be determinated as usual (from changed name)
-- if cost_item is missed it will be determinated as usual (name or drop)
-- a crazy sample is: instead of cobble place goldblock, use wood as payment
-- c["default:cobble"] = { name = "default:goldblock", cost_item = "default:wood" }
c["beds:bed_top"] = { cost_item = mapping.c_free_item } -- the bottom of the bed is payed, so buld the top for free
["beds:bed_top"] = { cost_item = mapping.c_free_item }, -- the bottom of the bed is payed, so buld the top for free
-- it is hard to get a source in survival, so we use buckets. Note, the bucket is lost after usage by NPC
c["default:lava_source"] = { cost_item = "bucket:bucket_lava" }
c["default:river_water_source"] = { cost_item = "bucket:bucket_river_water" }
c["default:water_source"] = { cost_item = "bucket:bucket_water" }
-- it is hard to get a source in survival, so we use buckets. Note, the bucket is lost after usage by NPC
["default:lava_source"] = { cost_item = "bucket:bucket_lava" },
["default:river_water_source"] = { cost_item = "bucket:bucket_river_water" },
["default:water_source"] = { cost_item = "bucket:bucket_water" },
-- does not sense to set flowing water because it flow away without the source (and will be generated trough source)
c["default:water_flowing"] = { name = "air" }
c["default:lava_flowing"] = { name = "air" }
c["default:river_water_flowing"] = { name = "air" }
-- does not sense to set flowing water because it flow away without the source (and will be generated trough source)
["default:water_flowing"] = { name = "air" },
["default:lava_flowing"] = { name = "air" },
["default:river_water_flowing"] = { name = "air" },
-- pay different dirt types by the sane dirt
c["default:dirt_with_dry_grass"] = { cost_item = "default:dirt" }
c["default:dirt_with_grass"] = { cost_item = "default:dirt" }
c["default:dirt_with_snow"] = { cost_item = "default:dirt" }
-- pay different dirt types by the sane dirt
["default:dirt_with_dry_grass"] = { cost_item = "default:dirt" },
["default:dirt_with_grass"] = { cost_item = "default:dirt" },
["default:dirt_with_snow"] = { cost_item = "default:dirt" },
-- Changed with MTG-0.4.16
c["xpanes:pane_5"] = { name = "xpanes:pane_flat", param2 = 0 } --unsure
c["xpanes:pane_10"] = { name = "xpanes:pane_flat", param2 = 1 } --unsure
-- Changed with MTG-0.4.16
["xpanes:pane_5"] = { name = "xpanes:pane_flat", param2 = 0 }, --unsure
["xpanes:pane_10"] = { name = "xpanes:pane_flat", param2 = 1 }, --unsure
c["default:torch"] = { custom_function = __torches_compat }
c["torches:wall"] = { name = "default:torch_wall" }
["default:torch"] = { custom_function = __torches_compat },
["torches:wall"] = { name = "default:torch_wall" },
}
-----------------------------------------------
-- copy table of mapping entry
-- Handle doors mirroring (_a vs _b)
-----------------------------------------------
function __mirror_doors(mr)
if not mr.node_def.door then
return
end
local node_name = mr.name
if node_name:sub(-1) == 'a' then
node_name = node_name:sub(1,-2)..'b'
else
node_name = node_name:sub(1,-2)..'a'
end
if minetest.registered_nodes[node_name] then
mr.node_def = minetest.registered_nodes[node_name]
mr.name = node_name
if mr.meta and mr.meta.fields and mr.meta.fields.state then
mr.meta.fields.state = (mr.meta.fields.state + 2) % 4
end
end
end
-----------------------------------------------
-- merge entry
-----------------------------------------------
local function merge_map_entry(entry1, entry2)
if entry2 then
@ -164,12 +194,11 @@ end
-----------------------------------------------
function mapping.map_unknown(name)
local map = unknown_nodes_data[name]
if not map or map.name == name then -- no fallback mapping. don't use the node
if not map or map.name == name or not minetest.registered_nodes[map.name] then
dprint("mapping failed:", name, dump(map))
print("unknown nodes in building", name)
return unknown_nodes_data["fallback"]
end
dprint("mapped", name, "to", map.name)
return merge_map_entry(map)
end
@ -177,35 +206,20 @@ end
-----------------------------------------------
-- Take filters and actions on nodes before building
-----------------------------------------------
function mapping.map(name)
function mapping.map(name, plan)
-- get mapped registred node name for further mappings
local mr = {name = name}
local node_chk = minetest.registered_nodes[name]
--do fallback mapping if not registred node
if not node_chk then
local fallback = mapping.map_unknown(name)
if fallback then
dprint("map fallback:", dump(fallback))
local fbmapped = mapping.map(fallback.name)
if fbmapped then
return merge_map_entry(fbmapped, fallback) --merge fallback values into the mapped node
end
end
dprint("unmapped node", name)
return
mr = merge_map_entry(mapping.map_unknown(name), mr)
end
-- get default replacement
local map = default_replacements[name]
local mr -- mapped return table
if not map then
mr = {}
mr.name = name
else
mr = merge_map_entry(map)
if mr.name == nil then
mr.name = name
end
if map then
mr = merge_map_entry(map, mr)
end
--disabled by mapping
@ -215,6 +229,11 @@ function mapping.map(name)
local node_def = minetest.registered_nodes[mr.name]
mr.node_def = node_def
if plan and plan.mirrored then
__mirror_doors(mr)
end
-- determine cost_item
if not mr.cost_item then
--Check for price or if it is free
@ -246,6 +265,7 @@ end
------------------------------------------
-- Cache some node content ID
------------------------------------------
mapping._protected_content_ids = {} -- this nodes detects other buildings
mapping._over_surface_content_ids = {} -- this nodes detects surface
mapping._volatile_contend_ids = {} -- this nodes will not be removed before placing new one

124
node.lua
View File

@ -43,6 +43,32 @@ function node_class:get_world_pos()
return self._world_pos
end
-------------------------------------
-- Handle rotation
--------------------------------------
function node_class:rotate_facedir(facedir)
-- rotate wallmounted
local mapped = self.mapped
if mapped.node_def.paramtype2 == "wallmounted" then
local param2_dir = mapped.param2 % 8
local param2_color = mapped.param2 - param2_dir
if self.plan.mirrored then
param2_dir = node.rotation_wallmounted_mirrored_map[param2_dir]
end
mapped.param2 = node.rotation_wallmounted_map[facedir][param2_dir] + param2_color
elseif mapped.node_def.paramtype2 == "facedir" then
-- rotate facedir
local param2_dir = mapped.param2 % 32
local param2_color = mapped.param2 - param2_dir
if self.plan.mirrored then
param2_dir = node.rotation_facedir_mirrored_map[param2_dir]
end
mapped.param2 = node.rotation_facedir_map[facedir][param2_dir] + param2_color
end
end
-------------------------------------
-- Get all information to build the node
--------------------------------------
@ -53,7 +79,7 @@ function node_class:get_mapped()
local mappedinfo = self.nodeinfo.mapped
if not mappedinfo then
mappedinfo = mapping.map(self.name)
mappedinfo = mapping.map(self.name, self.plan)
self.nodeinfo.mapped = mappedinfo
self.mapped = nil
end
@ -75,13 +101,15 @@ function node_class:get_mapped()
mapped.prob = mapped.prob or self.data.prob
if mapped.custom_function ~= nil then
mapped.custom_function(mapped, self._plan_pos, self:get_world_pos())
mapped.custom_function(mapped, self)
mapped.custom_function = nil
end
mapped.content_id = minetest.get_content_id(mapped.name)
self.mapped = mapped
self.cost_item = mapped.cost_item -- workaround / backwards compatibility to npcf_builder
self:rotate_facedir(self.plan.facedir)
return mapped
end
@ -125,5 +153,97 @@ function node_class:remove_from_plan()
self.plan:del_node(self._plan_pos)
end
--------------------------------------
-- Precalculated rotation mapping
--------------------------------------
node.rotation_wallmounted_map = {
[0] = {1,2,3,4,5,[0] = 0},
[1] = {1,5,4,2,3,[0] = 0},
[2] = {1,3,2,5,4,[0] = 0},
[3] = {1,4,5,3,2,[0] = 0},
}
node.rotation_wallmounted_mirrored_map = {1,3,2,4,5,[0] = 0}
node.rotation_facedir_map = {
[0] = { 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,[0] = 0},
[1] = { 2, 3, 0,13,14,15,12,17,18,19,16, 9,10,11, 8, 5, 6, 7, 4,23,20,21,22,[0] = 1},
[2] = { 3, 0, 1,10,11, 8, 9, 6, 7, 4, 5,18,19,16,17,14,15,12,13,22,23,20,21,[0] = 2},
[3] = { 0, 1, 2,19,16,17,18,15,12,13,14, 7, 4, 5, 6,11, 8, 9,10,21,22,23,20,[0] = 3},
}
node.rotation_facedir_mirrored_map = {3, 2, 1, 4, 7, 6, 5, 8, 11,10,9,16,19,18,17,12,15,14,13,20,23,22,21,[0] = 0}
--[[
--- Temporary code to calculate the wallmounted map
node.rotation_wallmounted_map = {}
for rotate = 0, 3 do -- facedir
node.rotation_wallmounted_cache[rotate] = {}
for wallmounted = 0, 5 do
local facedir, new_wallmounted
if wallmounted > 1 then
if wallmounted == 2 then
facedir = 1
elseif wallmounted == 3 then
facedir = 3
elseif wallmounted == 4 then
facedir = 0
elseif wallmounted == 5 then
facedir = 2
end
facedir = (facedir + rotate) % 4 --rotate
if facedir == 1 then
new_wallmounted = 2
elseif facedir == 3 then
new_wallmounted = 3
elseif facedir == 0 then
new_wallmounted = 4
elseif facedir == 2 then
new_wallmounted = 5
end
else
new_wallmounted = wallmounted
end
node.rotation_wallmounted_cache[rotate][wallmounted] = new_wallmounted
end
end
print(dump(node.rotation_wallmounted_cache))
]]
--[[
local direction_map = {1, 3, 2, 4}
local direction_map_mirror = {1, 4, 2, 3}
for rotate = 0, 3 do
node.rotation_facedir_map[rotate] = {}
for wal_direction = 0, 5 do
for wal_rotate = 0, 3 do
local oldwal = wal_direction*4+wal_rotate
if wal_direction == 0 then -- y+
new_wal_direction = 0
new_wal_rotate = (wal_rotate + rotate) % 4
elseif wal_direction == 5 then -- y-
new_wal_direction = 5
new_wal_rotate = (4+wal_rotate - rotate) % 4
else
new_wal_direction = direction_map[(direction_map[wal_direction] + rotate-1)%4+1]
new_wal_rotate = (wal_rotate + rotate) % 4
if rotate == 0 then
local new_wal_rotate_mirror = new_wal_rotate
if new_wal_rotate_mirror == 1 then
new_wal_rotate_mirror = 3
elseif new_wal_rotate_mirror == 3 then
new_wal_rotate_mirror = 1
end
local new_wal_direction_mirror = direction_map_mirror[(direction_map[wal_direction] + rotate-1)%4+1]
print(rotate, oldwal, (new_wal_direction_mirror*4+new_wal_rotate_mirror))
end
end
node.rotation_facedir_map[rotate][oldwal] = new_wal_direction*4 + new_wal_rotate
end
end
end
print(dump(node.rotation_facedir_map))
-- ]]
-------------------
return node

View File

@ -26,14 +26,17 @@ function plan.new(plan_id , anchor_pos)
self.__index = plan_class
self.plan_id = plan_id
self.anchor_pos = anchor_pos
self.data = {}
self.data.min_pos = {}
self.data.max_pos = {}
self.data.groundnode_count = 0
self.data.ground_y = -1 --if nothing defined, it is under the building
self.data.scm_data_cache = {}
self.data.nodeinfos = {}
self.data.nodecount = 0
self.facedir = 0
self.mirrored = false
self.data = {
min_pos = {},
max_pos = {},
groundnode_count = 0,
ground_y = -1, --if nothing defined, it is under the building
scm_data_cache = {},
nodeinfos = {},
nodecount = 0,
}
self.status = "new"
return self -- the plan object
end
@ -220,12 +223,40 @@ end
--------------------------------------
--Get world position relative to plan position
--------------------------------------
function plan_class:get_world_pos(pos, anchor_pos)
function plan_class:get_world_pos(plan_pos, anchor_pos)
local apos = anchor_pos or self.anchor_pos
return { x=pos.x+apos.x,
y=pos.y+apos.y - self.data.ground_y - 1,
z=pos.z+apos.z
}
local pos
if self.mirrored then
pos = table.copy(plan_pos)
pos.x = -pos.x
else
pos = plan_pos
end
local facedir_rotated = {
[0] = function(pos,apos) return {
x=pos.x+apos.x,
y=pos.y+apos.y,
z=pos.z+apos.z,
}end,
[1] = function(pos,apos) return {
x=pos.z+apos.x,
y=pos.y+apos.y,
z=-pos.x+apos.z,
} end,
[2] = function(pos,apos) return {
x=-pos.x+apos.x,
y=pos.y+apos.y,
z=-pos.z+apos.z,
} end,
[3] = function(pos,apos) return {
x=-pos.z+apos.x,
y=pos.y+apos.y,
z=pos.x+apos.z,
} end,
}
local ret = facedir_rotated[self.facedir](pos, apos)
ret.y = ret.y - self.data.ground_y - 1
return ret
end
--------------------------------------
@ -295,12 +326,37 @@ end
--------------------------------------
--Get plan position relative to world position
--------------------------------------
function plan_class:get_plan_pos(pos, anchor_pos)
function plan_class:get_plan_pos(world_pos, anchor_pos)
local apos = anchor_pos or self.anchor_pos
return { x=pos.x-apos.x,
y=pos.y-apos.y + self.data.ground_y + 1,
local facedir_rotated = {
[0] = function(pos,apos) return {
x=pos.x-apos.x,
y=pos.y-apos.y,
z=pos.z-apos.z
}
} end,
[1] = function(pos,apos) return {
x=-(pos.z-apos.z),
y=pos.y-apos.y,
z=(pos.x-apos.x),
} end,
[2] = function(pos,apos) return {
x=-(pos.x-apos.x),
y=pos.y-apos.y,
z=-(pos.z-apos.z),
} end,
[3] = function(pos,apos) return {
x=pos.z-apos.z,
y=pos.y-apos.y,
z=-(pos.x-apos.x),
} end,
}
local ret = facedir_rotated[self.facedir](world_pos, apos)
if self.mirrored then
ret.x = -ret.x
end
ret.y = ret.y + self.data.ground_y + 1
return ret
end
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