Make default an optional dependency...

If default not available, "default:stick" is replaced with "rainbow_ore:rainbow_ore_ingot" in recipes.

README.md

@@ -17,10 +17,12 @@ Crafting:
 
 Smelt "Rainbow Ore Block" --> "Rainbow Ingots"
 
-Tools are crafted as always but with "Rainbow Ingots" as material instead.
+- Tools:
+	- crafted as always but with "Rainbow Ingots" as material instead.
+	- if default mod is not available, "default:stick" is replaced with "rainbow_ore:rainbow_ore_ingot".
+- Armor:
+	- crafted like Armor but with "Rainbow Ingots" as material instead.
+- Shield:
+	- crafted like a shield but with "Rainbow Ingots" as material instead.
 
-Armor is crafted like Armor but with "Rainbow Ingots" as material instead.
-
-Shield are crafted like a shield but with "Rainbow Ingots" as material instead.
-
-You can craft Nyancat_rainbow blocks like any other "solid" blocks but with "Rainbow Ingots" as material instead.
+You can craft Nyancat_rainbow blocks like any other "solid" blocks but with "Rainbow Ingots" as material instead.

init.lua

@@ -56,13 +56,18 @@ minetest.register_tool("rainbow_ore:rainbow_ore_pickaxe", {
 })
 
 
+local stick = "rainbow_ore:rainbow_ore_ingot"
+if minetest.registered_items["default:stick"] then
+	stick = "default:stick"
+end
+
 --Define Rainbow_Ore_Pickaxe crafting recipe
 minetest.register_craft({
 	output = "rainbow_ore:rainbow_ore_pickaxe",
 	recipe = {
 		{"rainbow_ore:rainbow_ore_ingot", "rainbow_ore:rainbow_ore_ingot", "rainbow_ore:rainbow_ore_ingot"},
-		{"", "default:stick", ""},
-		{"", "default:stick", ""}
+		{"", stick, ""},
+		{"", stick, ""}
 	}
 })
 
@@ -87,8 +92,8 @@ minetest.register_craft({
 	output = "rainbow_ore:rainbow_ore_axe",
 	recipe = {
 		{"rainbow_ore:rainbow_ore_ingot", "rainbow_ore:rainbow_ore_ingot", ""},
-		{"rainbow_ore:rainbow_ore_ingot", "default:stick", ""},
-		{"", "default:stick", ""}
+		{"rainbow_ore:rainbow_ore_ingot", stick, ""},
+		{"", stick, ""}
 	}
 })
 
@@ -96,8 +101,8 @@ minetest.register_craft({
 	output = "rainbow_ore:rainbow_ore_axe",
 	recipe = {
 		{"", "rainbow_ore:rainbow_ore_ingot", "rainbow_ore:rainbow_ore_ingot"},
-		{"", "default:stick", "rainbow_ore:rainbow_ore_ingot"},
-		{"", "default:stick", ""}
+		{"", stick, "rainbow_ore:rainbow_ore_ingot"},
+		{"", stick, ""}
 	}
 })
 
@@ -123,8 +128,8 @@ minetest.register_craft({
 	output = "rainbow_ore:rainbow_ore_shovel",
 	recipe = {
 		{"", "rainbow_ore:rainbow_ore_ingot", ""},
-		{"", "default:stick", ""},
-		{"", "default:stick", ""}
+		{"", stick, ""},
+		{"", stick, ""}
 	}
 })
 
@@ -150,7 +155,7 @@ minetest.register_craft({
 	recipe = {
 		{"", "rainbow_ore:rainbow_ore_ingot", ""},
 		{"", "rainbow_ore:rainbow_ore_ingot", ""},
-		{"", "default:stick", ""}
+		{"", stick, ""}
 	}
 })
 

mod.conf

@@ -4,5 +4,4 @@ description = Rainbow materials & equipment.
 author = Robin Kuhn (KingSmarty)
 license = LGPL
 min_minetest_version = 5.0
-depends = default
-optional_depends = 3d_armor, shields
+optional_depends = default, 3d_armor, shields