fix some bugs, starting to track down all the compatability issues

stairsplus/compat/init.lua

@@ -1,4 +1,12 @@
-stairsplus.compat = {}
+stairsplus.compat = {
+	is_legacy_drawtype = function(node)
+		local def = minetest.registered_nodes[node]
+		return (
+			def.drawtype == "mesh" or
+			def.drawtype == "plantlike"
+		)
+	end
+}
 
 stairsplus.dofile("compat", "stairs")
 stairsplus.dofile("compat", "legacy")

stairsplus/compat/legacy.lua

@@ -3,13 +3,19 @@
 -- existing servers
 local api = stairsplus.api
 
+local is_legacy_drawtype = stairsplus.compat.is_legacy_drawtype
 local legacy_mode = stairsplus.settings.legacy_mode
 
 function stairsplus:register_all(modname, subname, recipeitem, fields)
+	local meta = {}
+	if is_legacy_drawtype(recipeitem) then
+		meta.ignore_drawtype = true
+	end
+
 	if legacy_mode then
-		api.register_group(recipeitem, "legacy", fields)
+		api.register_group(recipeitem, "legacy", fields, meta)
 	else
-		api.register_group(recipeitem, "common", fields)
+		api.register_group(recipeitem, "common", fields, meta)
 	end
 
 	local old_name = ("%s:%s"):format(modname, subname)

stairsplus/compat/stairs.lua

@@ -7,57 +7,78 @@ local api = stairsplus.api
 local S = stairsplus.S
 
 local default_align_style = stairsplus.settings.default_align_style
+local is_legacy_drawtype = stairsplus.compat.is_legacy_drawtype
 
 -- stairs compat: override what stairs does, and "fix" any stairs which were already registered...
 
 function stairs.register_stair(subname, node, groups, tiles, description, sounds, worldaligntex)
+	local meta = {
+		align_style = worldaligntex and "world" or default_align_style
+	}
+	if is_legacy_drawtype(node) then
+		meta.ignore_drawtype = true
+	end
+
 	api.register_single(node, "stair", {
 		groups = groups,
 		tiles = tiles,
 		description = description,
 		sounds = sounds,
-	}, {
-		align_style = worldaligntex and "world" or default_align_style
-	})
+	}, meta)
 
 	minetest.register_alias(("stairs:stair_%s"):format(subname), api.format_name(node, "stair"))
 end
 
 function stairs.register_slab(subname, node, groups, images, description, sounds, worldaligntex)
+	local meta = {
+		align_style = worldaligntex and "world" or default_align_style
+	}
+	if is_legacy_drawtype(node) then
+		meta.ignore_drawtype = true
+	end
+
 	api.register_single(node, "slab_8", {
 		groups = groups,
 		tiles = images,
 		description = description,
 		sounds = sounds,
-	}, {
-		align_style = worldaligntex and "world" or default_align_style
-	})
+	}, meta)
 
 	minetest.register_alias(("stairs:slab_%s"):format(subname), api.format_name(node, "slab_8"))
 end
 
 function stairs.register_stair_inner(subname, node, groups, tiles, description, sounds, worldaligntex, full_description)
+	local meta = {
+		align_style = worldaligntex and "world" or default_align_style
+	}
+	if is_legacy_drawtype(node) then
+		meta.ignore_drawtype = true
+	end
+
 	api.register_single(node, "stair_inner", {
 		groups = groups,
 		tiles = tiles,
 		description = full_description or S("Inner @1", description),
 		sounds = sounds,
-	}, {
-		align_style = worldaligntex and "world" or default_align_style
-	})
+	}, meta)
 
 	minetest.register_alias(("stairs:stair_inner_%s"):format(subname), api.format_name(node, "stair_inner"))
 end
 
 function stairs.register_stair_outer(subname, node, groups, tiles, description, sounds, worldaligntex, full_description)
+	local meta = {
+		align_style = worldaligntex and "world" or default_align_style
+	}
+	if is_legacy_drawtype(node) then
+		meta.ignore_drawtype = true
+	end
+
 	api.register_single(node, "stair_outer", {
 		groups = groups,
 		tiles = tiles,
 		description = full_description or S("Inner @1", description),
 		sounds = sounds,
-	}, {
-		align_style = worldaligntex and "world" or default_align_style
-	})
+	}, meta)
 
 	minetest.register_alias(("stairs:stair_outer_%s"):format(subname), api.format_name(node, "stair_outer"))
 end