translate moreblock node names back into stairs: nodenames for more portability between worlds

analyze_file.lua

@@ -233,5 +233,13 @@ handle_schematics.analyze_file = function( file_name, origin_offset, store_as_mt
 		end
 	end
 
+	-- some node names need to be replaced right here after reading the file
+	-- because further replacement functions rely on consistant node names
+	for i, name in ipairs(nodenames) do
+		if( replacements_group["after_read_file"][ name ]) then
+			nodenames[ i ] = replacements_group["after_read_file"][ name ]
+		end
+	end
+
 	return res;
 end

init.lua

@@ -84,9 +84,20 @@ dofile(handle_schematics.modpath.."/handle_schematics_meta.lua");
 -- these functions are responsible for the optional dependencies; they check
 -- which nodes are available and may be offered as possible replacements
 replacements_group = {};
+
+-- these replacements need to be applied immediately after a file is read
+-- (because else the node names would be incompatible for the other possible replacements)
+dofile(handle_schematics.modpath.."/replacements_after_read_file.lua")
+
 -- the replacement groups do add some non-ground nodes; needed by mg_villages
 replacements_group.node_is_ground = {}
 dofile(handle_schematics.modpath.."/replacements_discontinued_nodes.lua")
+
+-- moreblocks registers so many aliasses that it is a pain to move from a moreblocks world to one without;
+-- also, replacement functions expect stairs:stair_* and not moreblock names;
+-- therefore, repalce moreblock names with stairs:* names after reading the file
+dofile(handle_schematics.modpath.."/replacements_moreblocks.lua")
+
 dofile(handle_schematics.modpath.."/replacements_wood.lua")
 dofile(handle_schematics.modpath.."/replacements_realtest.lua")
 dofile(handle_schematics.modpath.."/replacements_mineclone2.lua")

replacements_after_read_file.lua

@@ -0,0 +1,16 @@
+
+replacements_group["after_read_file"] = {}
+
+-- Some mods (like i.e. moreblocks) define aliasses for nodes.
+-- Schematics are saved with those aliassed names. When we want to restore such a
+-- schematic, it has "wrong" node names (alias_name) stored ("wrong" in the sense
+-- of "mod not installed in this world" or "replacements expect other name").
+--
+-- The replacements here are applied directly in handle_schematics.analyze_file(..)
+-- and do not have to be applied manually.
+--
+handle_schematics.replacements_revert_alias = function( orig_node_name, alias_name )
+	-- no problem if older definitions are overwritten
+	-- (lets just hope the most recent one is the best one)
+	replacements_group["after_read_file"][ alias_name ] = orig_node_name
+end

replacements_moreblocks.lua

@@ -0,0 +1,89 @@
+--
+-- this is taken from Calinous moreblocks mod with his permission.
+-- See original file here:
+-- https://github.com/minetest-mods/moreblocks/blob/master/stairsplus/registrations.lua
+--
+-- We do need to revert the aliases defined there in moreblocks stairplus mod
+-- because a) moreblocks might not be installed and b) replacement functions
+-- expect node names in the stairs:* naming space.
+
+
+-- default registrations
+local default_nodes = { -- Default stairs/slabs/panels/microblocks:
+	"stone",
+	"stone_block",
+	"cobble",
+	"mossycobble",
+	"brick",
+	"sandstone",
+	"steelblock",
+	"goldblock",
+	"copperblock",
+	"bronzeblock",
+	"diamondblock",
+	"tinblock",
+	"desert_stone",
+	"desert_stone_block",
+	"desert_cobble",
+	"meselamp",
+	"glass",
+	"tree",
+	"wood",
+	"jungletree",
+	"junglewood",
+	"pine_tree",
+	"pine_wood",
+	"acacia_tree",
+	"acacia_wood",
+	"aspen_tree",
+	"aspen_wood",
+	"obsidian",
+	"obsidian_block",
+	"obsidianbrick",
+	"obsidian_glass",
+	"stonebrick",
+	"desert_stonebrick",
+	"sandstonebrick",
+	"silver_sandstone",
+	"silver_sandstone_brick",
+	"silver_sandstone_block",
+	"desert_sandstone",
+	"desert_sandstone_brick",
+	"desert_sandstone_block",
+	"sandstone_block",
+	"coral_skeleton",
+	"ice",
+}
+
+for _, name in pairs(default_nodes) do
+	local mod = "default"
+	local nodename = mod .. ":" .. name
+	mod = "moreblocks"
+	handle_schematics.replacements_revert_alias("stairs:stair_" .. name, mod .. ":stair_" .. name)
+	handle_schematics.replacements_revert_alias("stairs:stair_outer_" .. name, mod .. ":stair_" .. name .. "_outer")
+	handle_schematics.replacements_revert_alias("stairs:stair_inner_" .. name, mod .. ":stair_" .. name .. "_inner")
+	handle_schematics.replacements_revert_alias("stairs:slab_"  .. name, mod .. ":slab_"  .. name)
+end
+
+-- farming registrations
+if minetest.get_modpath("farming") then
+	local farming_nodes = {"straw"}
+	for _, name in pairs(farming_nodes) do
+		local mod = "farming"
+		local nodename = mod .. ":" .. name
+
+		mod = "moreblocks"
+		handle_schematics.replacements_revert_alias("stairs:stair_" .. name, mod .. ":stair_" .. name)
+		handle_schematics.replacements_revert_alias("stairs:stair_outer_" .. name, mod .. ":stair_" .. name .. "_outer")
+		handle_schematics.replacements_revert_alias("stairs:stair_inner_" .. name, mod .. ":stair_" .. name .. "_inner")
+		handle_schematics.replacements_revert_alias("stairs:slab_"  .. name, mod .. ":slab_"  .. name)
+	end
+end
+
+-- basic_materials, keeping the original other-mod-oriented names
+-- for backwards compatibility
+
+if minetest.get_modpath("basic_materials") then
+	handle_schematics.replacements_revert_alias("prefab:concrete_stair","technic:stair_concrete")
+	handle_schematics.replacements_revert_alias("prefab:concrete_slab","technic:slab_concrete")
+end