Handle wood_tile replacement more carefully.

- An LBM is added to handle replacements of wood_tiles on the map while preserving there rotation about the +y (vertical) axis.  This will preserve existing floor patterns.  Unfortunately, due to the preexisting side tile orientations, preserving wall patterns is not possible while also reducing the wood_tiles down to just one node.

 - Deprecate the no longer used wood_tiles (wood_tile_right, wood_tile_left, wood_tile_down, and wood_tile_flipped), and add recipes to convert them.

 - Rename wood_tile_up to wood_tile_offset.

Closes #101

aliases.lua

@@ -37,7 +37,8 @@ minetest.register_alias("moreblocks:ironstone", "moreblocks:iron_stone")
 minetest.register_alias("moreblocks:woodtile", "moreblocks:wood_tile")
 minetest.register_alias("moreblocks:woodtile_full", "moreblocks:wood_tile_full")
 minetest.register_alias("moreblocks:woodtile_centered", "moreblocks:wood_tile_centered")
-minetest.register_alias("moreblocks:woodtile_up", "moreblocks:wood_tile_up")
+minetest.register_alias("moreblocks:woodtile_up", "moreblocks:wood_tile_offset")
+minetest.register_alias("moreblocks:wood_tile_up", "moreblocks:wood_tile_offset")
 minetest.register_alias("moreblocks:woodtile_down", "moreblocks:wood_tile_down")
 minetest.register_alias("moreblocks:woodtile_left", "moreblocks:wood_tile_left")
 minetest.register_alias("moreblocks:woodtile_right", "moreblocks:wood_tile_right")
@@ -56,10 +57,6 @@ minetest.register_alias("moreblocks:emptybookshelf", "moreblocks:empty_bookshelf
 minetest.register_alias("moreblocks:junglestick", "moreblocks:jungle_stick")
 minetest.register_alias("moreblocks:splitstonesquare","moreblocks:split_stone_tile")
 minetest.register_alias("moreblocks:allfacestree","moreblocks:all_faces_tree")
-minetest.register_alias("moreblocks:wood_tile_flipped","moreblocks:wood_tile")
-minetest.register_alias("moreblocks:wood_tile_down","moreblocks:wood_tile_up")
-minetest.register_alias("moreblocks:wood_tile_left","moreblocks:wood_tile_up")
-minetest.register_alias("moreblocks:wood_tile_right","moreblocks:wood_tile_up")
 minetest.register_alias("moreblocks:empty_bookshelf","moreblocks:empty_shelf")
 minetest.register_alias("moreblocks:split_stone_tile_alt","moreblocks:checker_stone_tile")
 
@@ -83,3 +80,26 @@ minetest.register_abm({
 		})
 	end,
 })
+
+minetest.register_lbm({
+	name = "moreblocks:reduce_wood_tile_redundancy",
+	nodenames = {
+		"moreblocks:wood_tile_left",
+		"moreblocks:wood_tile_down",
+		"moreblocks:wood_tile_right",
+		"moreblocks:wood_tile_flipped",
+	},
+	action = function(pos, node)
+		if node.name:find("left") then
+			minetest.set_node(pos, {name = "moreblocks:wood_tile_offset", param2=1})
+		elseif node.name:find("down") then
+			minetest.set_node(pos, {name = "moreblocks:wood_tile_offset", param2=2})
+		elseif node.name:find("right") then
+			minetest.set_node(pos, {name = "moreblocks:wood_tile_offset", param2=3})
+		else -- wood_tile_flipped
+			minetest.set_node(pos, {name = "moreblocks:wood_tile", param2=1})
+		end
+		minetest.log('action', "LBM replaced " .. node.name ..
+			" at " .. minetest.pos_to_string(pos))
+	end,
+})

crafting.lua

@@ -44,6 +44,12 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	type = "shapeless",
+	output = "moreblocks:wood_tile",
+	recipe = {"moreblocks:wood_tile_flipped"}
+})
+
 minetest.register_craft({
 	output = "moreblocks:wood_tile_center 9",
 	recipe = {
@@ -62,13 +68,31 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = "moreblocks:wood_tile_up",
+	output = "moreblocks:wood_tile_offset",
 	recipe = {
 		{"default:stick"},
 		{"moreblocks:wood_tile_center"},
 	}
 })
 
+minetest.register_craft({
+	type = "shapeless",
+	output = "moreblocks:wood_tile_offset",
+	recipe = {"moreblocks:wood_tile_down"}
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "moreblocks:wood_tile_offset",
+	recipe = {"moreblocks:wood_tile_left"}
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "moreblocks:wood_tile_offset",
+	recipe = {"moreblocks:wood_tile_right"}
+})
+
 minetest.register_craft({
 	output = "moreblocks:circle_stone_bricks 8",
 	recipe = {

nodes.lua

@@ -22,6 +22,20 @@ local function tile_tiles(name)
 	return {tex, tex, tex, tex, tex.. "^[transformR90", tex.. "^[transformR90"}
 end
 
+local function wood_tile_replace(itemstack, placer, pointed_thing)
+	local substack
+	if itemstack:get_name() == "moreblocks:wood_tile_flipped" then
+		substack = ItemStack("moreblocks:wood_tile")
+	else -- right, left, and down variants
+		substack = ItemStack("moreblocks:wood_tile_offset")
+	end
+	local _, success = minetest.item_place(substack, placer, pointed_thing)
+	if success then
+		itemstack:take_item()
+	end
+	return itemstack
+end
+
 local nodes = {
 	["wood_tile"] = {
 		description = S("Wooden Tile"),
@@ -37,6 +51,17 @@ local nodes = {
 		"default_wood.png^moreblocks_wood_tile.png^[transformR90"},
 		sounds = sound_wood,
 	},
+	["wood_tile_flipped"] = {
+		description = S("Wooden Tile (Deprecated)"),
+		tiles = {"default_wood.png^moreblocks_wood_tile.png^[transformR90",
+		"default_wood.png^moreblocks_wood_tile.png^[transformR90",
+		"default_wood.png^moreblocks_wood_tile.png^[transformR90",
+		"default_wood.png^moreblocks_wood_tile.png^[transformR90",
+		"default_wood.png^moreblocks_wood_tile.png^[transformR180",
+		"default_wood.png^moreblocks_wood_tile.png^[transformR180"},
+		no_stairs = true,
+		on_place = wood_tile_replace
+	},
 	["wood_tile_center"] = {
 		description = S("Centered Wooden Tile"),
 		groups = {wood = 1, choppy = 2, oddly_breakable_by_hand = 2, flammable = 3},
@@ -51,16 +76,34 @@ local nodes = {
 		tiles = tile_tiles("wood_tile_full"),
 		sounds = sound_wood,
 	},
-	["wood_tile_up"] = {
+	["wood_tile_offset"] = {
-		description = S("Upwards Wooden Tile"),
+		description = S("Offset Wooden Tile"),
 		paramtype2 = "facedir",
 		place_param2 = 0,
 		groups = {wood = 1, choppy = 2, oddly_breakable_by_hand = 2, flammable = 3},
 		is_ground_content = false,
-		tiles = {"default_wood.png^moreblocks_wood_tile_up.png"},
+		tiles = {"default_wood.png^moreblocks_wood_tile_offset.png"},
 		sounds = sound_wood,
 		no_stairs = true,
 	},
+	["wood_tile_down"] = {
+		description = S("Downwards Wooden Tile (Deprecated)"),
+		tiles = {"default_wood.png^[transformR180^moreblocks_wood_tile_offset.png^[transformR180"},
+		no_stairs = true,
+		on_place = wood_tile_replace
+	},
+	["wood_tile_left"] = {
+		description = S("Leftwards Wooden Tile (Deprecated)"),
+		tiles = {"default_wood.png^[transformR270^moreblocks_wood_tile_offset.png^[transformR270"},
+		no_stairs = true,
+		on_place = wood_tile_replace
+	},
+	["wood_tile_right"] = {
+		description = S("Rightwards Wooden Tile (Deprecated)"),
+		tiles = {"default_wood.png^[transformR90^moreblocks_wood_tile_offset.png^[transformR90"},
+		no_stairs = true,
+		on_place = wood_tile_replace
+	},
 	["circle_stone_bricks"] = {
 		description = S("Circle Stone Bricks"),
 		groups = {stone = 1, cracky = 3},