Rewrite lighting to use engine's 6d facedir prediction code

changed the names of a couple of internal functions to compensate.

this makes lib_6d.lua obsolete.

init.lua

@@ -59,8 +59,21 @@ function homedecor.table_copy(t)
     return nt
 end
 
+-- protection wrapper for 6d stuff
+
+function homedecor.protect_and_rotate(itemstack, placer, pointed_thing)
+	if not homedecor.node_is_owned(pointed_thing.under, placer) 
+	   and not homedecor.node_is_owned(pointed_thing.above, placer) then
+		local keys=placer:get_player_control()
+		minetest.rotate_and_place(itemstack, placer, pointed_thing,
+			homedecor.expect_infinite_stacks, {invert_wall = keys.sneak})
+	end
+	return itemstack
+end
+
+-- load various other components
+
 dofile(homedecor.modpath.."/ownership.lua")
-dofile(homedecor.modpath.."/lib_6d.lua")
 
 dofile(homedecor.modpath.."/misc_nodes.lua")					-- the catch-all for all misc nodes
 dofile(homedecor.modpath.."/tables.lua")

lib_6d.lua

@@ -1,52 +0,0 @@
--- Simplified 6d facedir rotation/prediction library
--- by VanessaE 
--- license: WTFPL
-
-lib_6d = {}
-
-local dirs1 = { 20, 23, 22, 21 }
-local dirs2 = { 9, 18, 7, 12 }
-
-function lib_6d:rotate_and_place(itemstack, placer, pointed_thing, infinitestacks)
-	local node = minetest.get_node(pointed_thing.under)
-	if not minetest.registered_nodes[node.name] or not minetest.registered_nodes[node.name].on_rightclick then
-
-		local above = pointed_thing.above
-		local under = pointed_thing.under
-		local pitch = placer:get_look_pitch()
-		local pname = minetest.get_node(under).name
-		local node = minetest.get_node(above)
-		local fdir = minetest.dir_to_facedir(placer:get_look_dir())
-		local wield_name = itemstack:get_name()
-
-		if not minetest.registered_nodes[pname]
-		    or not minetest.registered_nodes[pname].on_rightclick then
-
-			local iswall = (above.x ~= under.x) or (above.z ~= under.z)
-			local isceiling = (above.x == under.x) and (above.z == under.z) and (pitch > 0)
-			local pos1 = above
-
-			if minetest.registered_nodes[pname]["buildable_to"] then
-				pos1 = under
-				iswall = false
-			end
-
-			if not minetest.registered_nodes[minetest.get_node(pos1).name]["buildable_to"] then return end
-
-			if iswall then 
-				minetest.add_node(pos1, {name = wield_name, param2 = dirs2[fdir+1] }) -- place wall variant
-			elseif isceiling then
-				minetest.add_node(pos1, {name = wield_name, param2 = 20 }) -- place upside down variant
-			else
-				minetest.add_node(pos1, {name = wield_name, param2 = 0 }) -- place right side up
-			end
-
-			if not infinitestacks then
-				itemstack:take_item()
-				return itemstack
-			end
-		end
-	else
-		minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack)
-	end
-end

lighting.lua

@@ -87,14 +87,7 @@ minetest.register_node('homedecor:glowlight_half_yellow', {
 	groups = { snappy = 3 },
 	light_source = LIGHT_MAX,
 	sounds = default.node_sound_wood_defaults(),
-
-	on_place = function(itemstack, placer, pointed_thing)
-		if not homedecor:node_is_owned(pointed_thing.under, placer) 
-		   and not homedecor:node_is_owned(pointed_thing.above, placer) then
-			lib_6d:rotate_and_place(itemstack, placer, pointed_thing, homedecor.expect_infinite_stacks)
-		end
-		return itemstack
-	end
+	on_place = homedecor.protect_and_rotate
 })
 
 minetest.register_node('homedecor:glowlight_quarter_yellow', {
@@ -124,17 +117,9 @@ minetest.register_node('homedecor:glowlight_quarter_yellow', {
 	groups = { snappy = 3 },
 	light_source = LIGHT_MAX-1,
 	sounds = default.node_sound_wood_defaults(),
-	on_place = function(itemstack, placer, pointed_thing)
-		if not homedecor:node_is_owned(pointed_thing.under, placer) 
-		   and not homedecor:node_is_owned(pointed_thing.above, placer) then
-			lib_6d:rotate_and_place(itemstack, placer, pointed_thing, homedecor.expect_infinite_stacks)
-		end
-		return itemstack
-	end
+	on_place = homedecor.protect_and_rotate
 })
 
-
-
 -- White
 
 minetest.register_node('homedecor:glowlight_half_white', {
@@ -164,13 +149,7 @@ minetest.register_node('homedecor:glowlight_half_white', {
 	groups = { snappy = 3 },
 	light_source = LIGHT_MAX,
 	sounds = default.node_sound_wood_defaults(),
-	on_place = function(itemstack, placer, pointed_thing)
-		if not homedecor:node_is_owned(pointed_thing.under, placer) 
-		   and not homedecor:node_is_owned(pointed_thing.above, placer) then
-			lib_6d:rotate_and_place(itemstack, placer, pointed_thing, homedecor.expect_infinite_stacks)
-		end
-		return itemstack
-	end
+	on_place = homedecor.protect_and_rotate
 })
 
 minetest.register_node('homedecor:glowlight_quarter_white', {
@@ -200,13 +179,7 @@ minetest.register_node('homedecor:glowlight_quarter_white', {
 	groups = { snappy = 3 },
 	light_source = LIGHT_MAX-1,
 	sounds = default.node_sound_wood_defaults(),
-	on_place = function(itemstack, placer, pointed_thing)
-		if not homedecor:node_is_owned(pointed_thing.under, placer) 
-		   and not homedecor:node_is_owned(pointed_thing.above, placer) then
-			lib_6d:rotate_and_place(itemstack, placer, pointed_thing, homedecor.expect_infinite_stacks)
-		end
-		return itemstack
-	end
+	on_place = homedecor.protect_and_rotate
 })
 
 -- Glowlight "cubes"
@@ -239,13 +212,7 @@ minetest.register_node('homedecor:glowlight_small_cube_yellow', {
 	light_source = LIGHT_MAX-1,
 	sounds = default.node_sound_wood_defaults(),
 
-	on_place = function(itemstack, placer, pointed_thing)
-		if not homedecor:node_is_owned(pointed_thing.under, placer) 
-		   and not homedecor:node_is_owned(pointed_thing.above, placer) then
-			lib_6d:rotate_and_place(itemstack, placer, pointed_thing, homedecor.expect_infinite_stacks)
-		end
-		return itemstack
-	end
+	on_place = homedecor.protect_and_rotate
 })
 
 minetest.register_node('homedecor:glowlight_small_cube_white', {
@@ -275,12 +242,6 @@ minetest.register_node('homedecor:glowlight_small_cube_white', {
 	groups = { snappy = 3 },
 	light_source = LIGHT_MAX-1,
 	sounds = default.node_sound_wood_defaults(),
-	on_place = function(itemstack, placer, pointed_thing)
-		if not homedecor:node_is_owned(pointed_thing.under, placer) 
-		   and not homedecor:node_is_owned(pointed_thing.above, placer) then
-			lib_6d:rotate_and_place(itemstack, placer, pointed_thing, homedecor.expect_infinite_stacks)
-		end
-		return itemstack
-	end
+	on_place = homedecor.protect_and_rotate
 })
 

ownership.lua

@@ -1,7 +1,7 @@
 
 local S = homedecor.gettext
 
-function homedecor:node_is_owned(pos, placer)
+function homedecor.node_is_owned(pos, placer)
 	local ownername = false
 	if type(IsPlayerNodeOwner) == "function" then					-- node_ownership mod
 		if HasOwner(pos, placer) then						-- returns true if the node is owned