Updated to work with Minetest 5.2

Made some minor updates to the orginal archived code so it will now work with minetest_game included with Minetest engine 5.2.

Changes
added farming as a dependancy
added snowblock
added iceblock
adjusted a few lines of code to allow comboblock to work with the current version of the stairs mod.

depends.txt

@@ -1 +1,2 @@
 stairs
+farming

init.lua

@@ -1,4 +1,13 @@
-comboblock = {index = {
+--    _________               ___.         __________.__                 __        --
+--    \_   ___ \  ____   _____\_ |__   ____\______   \  |   ____   ____ |  | __    --
+--    /    \  \/ /  _ \ /     \| __ \ /  _ \|    |  _/  |  /  _ \_/ ___\|  |/ /    --
+--    \     \___(  <_> )  Y Y  \ \_\ (  <_> )    |   \  |_(  <_> )  \___|    <     --
+--     \______  /\____/|__|_|  /___  /\____/|______  /____/\____/ \___  >__|_ \    --
+--            \/             \/    \/              \/                 \/     \/    --
+
+                      --Orginally written/created by Pithydon/Pithy
+
+comboblock = {index = {                                         --List of slab files to allow to combo
 	["default:wood"] = "stairs:slab_wood",
 	["default:junglewood"] = "stairs:slab_junglewood",
 	["default:pine_wood"] = "stairs:slab_pine_wood",
@@ -15,22 +24,31 @@ comboblock = {index = {
 	["default:obsidian"] = "stairs:slab_obsidian",
 	["default:obsidianbrick"] = "stairs:slab_obsidianbrick",
 	["default:brick"] = "stairs:slab_brick",
-	["farming:straw"] = "stairs:slab_straw",
 	["default:steelblock"] = "stairs:slab_steelblock",
 	["default:copperblock"] = "stairs:slab_copperblock",
 	["default:bronzeblock"] = "stairs:slab_bronzeblock",
-	["default:goldblock"] = "stairs:slab_goldblock"
+	["default:goldblock"] = "stairs:slab_goldblock",
+	["default:ice"] = "stairs:slab_ice",
+	["default:snowblock"] = "stairs:slab_snowblock",
+	["farming:straw"] = "stairs:slab_straw"
 }}
 local creative = minetest.setting_getbool("creative_mode")
 for k,v1 in pairs(comboblock.index) do
-	local v1_def = minetest.registered_nodes[v1]
-	local v1_groups = table.copy(v1_def.groups)
+	local v1_def = minetest.registered_nodes[v1]                 -- Makes a copy of the relevant node settings
+	local v1_groups = table.copy(v1_def.groups)                  -- Takes the above and places the groups into its own seperate copy
 	v1_groups.not_in_creative_inventory = 1
-	local v1_tiles = table.copy(v1_def.tiles)
-	if not v1_tiles[2] then
-		v1_tiles[2] = v1_tiles[1]
-	end
-	if not v1_tiles[3] then
+	local v1_tiles = table.copy(v1_def.tiles)                    -- The first group of tiles ie v1
+			--[[for k,v in pairs(v1_tiles) do                    -- Bunch of debug I(S01) added to get my head around data structure.
+				minetest.debug("k",tostring(k)," v", tostring(v))
+				minetest.debug ("direct:",v1_tiles[k].name)					
+				for k2, v2 in pairs(v) do
+					minetest.debug("k2",tostring(k2),"v2",tostring(v2))
+				end	
+			end	]]--
+	if not v1_tiles[2] then                                     -- This bit checks if we have an image name 
+		v1_tiles[2] = v1_tiles[1]                               -- for each side of the node, if it dosen't it 
+	end                                                         -- copies the previous one in
+	if not v1_tiles[3] then                                     -- 1 = Top, 2 = Bottom, 3-6 = Sides
 		v1_tiles[3] = v1_tiles[2]
 	end
 	if not v1_tiles[4] then
@@ -43,7 +61,7 @@ for k,v1 in pairs(comboblock.index) do
 		v1_tiles[6] = v1_tiles[5]
 	end
 	for _,v2 in pairs(comboblock.index) do
-		if v1 ~= v2 then
+		if v1 ~= v2 then                                  -- this creates a second copy of all slabs and is identical to v1
 			local v2_def = minetest.registered_nodes[v2]
 			local v2_tiles = table.copy(v2_def.tiles)
 			if not v2_tiles[2] then
@@ -61,13 +79,15 @@ for k,v1 in pairs(comboblock.index) do
 			if not v2_tiles[6] then
 				v2_tiles[6] = v2_tiles[5]
 			end
-			minetest.register_node("comboblock:"..v1:split(":")[2].."_onc_"..v2:split(":")[2], {
+
+			minetest.register_node("comboblock:"..v1:split(":")[2].."_onc_"..v2:split(":")[2], {  -- registering the new combo nodes
 				description = v1_def.description.." on "..v2_def.description,
-				tiles = {v1_tiles[1], v2_tiles[2],
-						v1_tiles[3].."^[lowpart:50:"..v2_tiles[3],
-						v1_tiles[4].."^[lowpart:50:"..v2_tiles[4],
-						v1_tiles[5].."^[lowpart:50:"..v2_tiles[5],
-						v1_tiles[6].."^[lowpart:50:"..v2_tiles[6]},
+				tiles = {v1_tiles[1].name, v2_tiles[2].name,
+						v1_tiles[3].name.."^[lowpart:50:"..v2_tiles[3].name,                      -- Stairs registers it's tiles slightly differently now
+						v1_tiles[4].name.."^[lowpart:50:"..v2_tiles[4].name,                      -- in a nested table structure and now makes use of 
+						v1_tiles[5].name.."^[lowpart:50:"..v2_tiles[5].name,                      -- align_style = "world" for most slabs....I think
+						v1_tiles[6].name.."^[lowpart:50:"..v2_tiles[6].name
+						},
 				paramtype = "light",
 				paramtype2 = "facedir",
 				drawtype = "normal",