Make doc (and progressive reveal) optional

.gitattributes

@@ -17,4 +17,5 @@ LICENSE     text
 *.xcf   binary
 
 .*           export-ignore
+*.cdb.json   export-ignore
 Screenshot.* export-ignore

init.lua

@@ -18,8 +18,14 @@ function sfcg.get_recipes(data, item)
 	return sfcg.recipes_cache[item]
 end
 
+-- Loading components
+
 dofile(modpath.."/craftguide.lua")
-dofile(modpath.."/reveal.lua")
+
+if (minetest.get_modpath("doc") and minetest.get_modpath("doc_items")) then
+	dofile(modpath.."/reveal.lua")
+end
+
 if (minetest.get_modpath("sfinv") and minetest.global_exists("sfinv")) and sfinv.enabled then
 	dofile(modpath.."/sfinv.lua")
 end

mod.conf

@@ -1,5 +1,5 @@
 name = sfcraftguide
-description = An augmented mtg_craftguide. Supports a progressive reveal system that can follow docs item help.
-depends = doc, doc_items
-optional_depends = sfinv
+description = An augmented mtg_craftguide. Supports a progressive reveal system that follows docs item help.
+depends = 
+optional_depends = sfinv, doc, doc_items
 min_minetest_version = 5.0

reveal.lua

@@ -55,11 +55,7 @@ local function revealed_show_recipe(recipe, playername)
 end
 
 
-local orig_execute_search = sfcg.execute_search
 local orig_get_usages = sfcg.get_usages
-local orig_get_recipes = sfcg.get_recipes
-local orig_mark_entry_as_revealed = doc.mark_entry_as_revealed
-
 function sfcg.get_usages(data, item)
   local recipes = orig_get_usages(data, item)
   if not recipes then
@@ -77,6 +73,8 @@ function sfcg.get_usages(data, item)
   end
 end
 
+
+local orig_get_recipes = sfcg.get_recipes
 function sfcg.get_recipes(data, item)
   local recipes = orig_get_recipes(data, item)
   if not recipes then
@@ -94,6 +92,8 @@ function sfcg.get_recipes(data, item)
   end
 end
 
+
+local orig_execute_search = sfcg.execute_search
 function sfcg.execute_search(data)
   -- Only needed if doc is an optional dependency
   --
@@ -125,6 +125,8 @@ local function async_update()
   end
 end
 
+
+local orig_mark_entry_as_revealed = doc.mark_entry_as_revealed
 function doc.mark_entry_as_revealed(playername, category_id, entry_id)
   -- Temp Fix: `doc.entry_revealed()` crashes on some items like farming:* because they're given the wrong category_id
   -- if not doc.entry_revealed(playername, category_id, entry_id) then