changed configuration

api.lua

@@ -0,0 +1,3 @@
+farming.add_soil=function(soil2add)
+	table.insert(farming.change_soil,soil2add)
+end

config.lua

@@ -35,7 +35,7 @@ local test_soil = {"default:dirt","default:dirt_with_grass","default:dirt_with_d
 	"default:dirt_with_coniferous_litter","default:permafrost_with_moss"}
 for i,s in ipairs(test_soil) do
   if minetest.registered_nodes[s] ~= nil then
-    table.insert(farming.change_soil,s)
+	farming.add_soil(s)
   end
 end
 farming.change_soil_desert = {}

init.lua

@@ -13,6 +13,7 @@ minetest.log("action", "[MOD]"..minetest.get_current_modname().." -- start loadi
 -- Load files
 
 
+dofile(farming.path .. "/api.lua") -- several helping functions
 dofile(farming.path .. "/config.lua") -- configuration of mod
 
 dofile(farming.path .. "/actions_register.lua") -- several actions defined

nodes.lua

@@ -10,11 +10,6 @@ local add_soil = function(item,soil)
 	})
 end
 
--- override grass items
-if (farming.change_soil == nil) then
-  farming.change_soil = {"default:dirt","default:dirt_with_grass","default:dirt_with_dry_grass","default:dirt_with_rainforest_litter",
-	"default:dirt_with_coniferous_litter","default:permafrost_with_moss"}
-end
 for i,v in ipairs(farming.change_soil) do
 	add_soil(v,"farming:soil")
 end