Make chests usable without moreores (& add soft dependency)

technic_chests/depends.txt

@@ -1,3 +1,4 @@
 default
+moreores?
 pipeworks
 intllib?

technic_chests/gold_chest.lua

@@ -1,21 +1,31 @@
 
-minetest.register_craft({
+local material_list
+if minetest.get_modpath("moreores") then
+	material_list = { 'silver' }
+else
+	-- Make the gold chest obtainable for mere mortals (the silver chest is not obtainable)
+	material_list = { 'copper', 'silver' }
+end
+
+for _, material in ipairs(material_list) do
+	minetest.register_craft({
 		output = 'technic:gold_chest',
 		recipe = {
 			{'default:gold_ingot','default:gold_ingot','default:gold_ingot'},
-		{'default:gold_ingot','technic:silver_chest','default:gold_ingot'},
+			{'default:gold_ingot',"technic:"..material.."_chest",'default:gold_ingot'},
 			{'default:gold_ingot','default:gold_ingot','default:gold_ingot'},
 		}
-})
+	})
 
-minetest.register_craft({
+	minetest.register_craft({
 		output = 'technic:gold_locked_chest',
 		recipe = {
 			{'default:gold_ingot','default:gold_ingot','default:gold_ingot'},
-		{'default:gold_ingot','technic:silver_locked_chest','default:gold_ingot'},
+			{'default:gold_ingot',"technic:"..material.."_locked_chest",'default:gold_ingot'},
 			{'default:gold_ingot','default:gold_ingot','default:gold_ingot'},
 		}
-})
+	})
+end
 
 minetest.register_craft({
 	output = 'technic:gold_locked_chest',

technic_chests/mithril_chest.lua

@@ -1,20 +1,22 @@
-minetest.register_craft({
+if minetest.get_modpath("moreores") then
+	minetest.register_craft({
 		output = 'technic:mithril_chest 1',
 		recipe = {
 			{'moreores:mithril_ingot','moreores:mithril_ingot','moreores:mithril_ingot'},
 			{'moreores:mithril_ingot','technic:gold_chest','moreores:mithril_ingot'},
 			{'moreores:mithril_ingot','moreores:mithril_ingot','moreores:mithril_ingot'},
 		}
-})
+	})
 
-minetest.register_craft({
+	minetest.register_craft({
 		output = 'technic:mithril_locked_chest 1',
 		recipe = {
 			{'moreores:mithril_ingot','moreores:mithril_ingot','moreores:mithril_ingot'},
 			{'moreores:mithril_ingot','technic:gold_locked_chest','moreores:mithril_ingot'},
 			{'moreores:mithril_ingot','moreores:mithril_ingot','moreores:mithril_ingot'},
 		}
-})
+	})
+end
 
 minetest.register_craft({
 	output = 'technic:mithril_locked_chest 1',

technic_chests/silver_chest.lua

@@ -1,20 +1,22 @@
-minetest.register_craft({
+if minetest.get_modpath("moreores") then
+	minetest.register_craft({
 		output = 'technic:silver_chest',
 		recipe = {
 			{'moreores:silver_ingot','moreores:silver_ingot','moreores:silver_ingot'},
 			{'moreores:silver_ingot','technic:copper_chest','moreores:silver_ingot'},
 			{'moreores:silver_ingot','moreores:silver_ingot','moreores:silver_ingot'},
 		}
-})
+	})
 
-minetest.register_craft({
+	minetest.register_craft({
 		output = 'technic:silver_locked_chest',
 		recipe = {
 			{'moreores:silver_ingot','moreores:silver_ingot','moreores:silver_ingot'},
 			{'moreores:silver_ingot','technic:copper_locked_chest','moreores:silver_ingot'},
 			{'moreores:silver_ingot','moreores:silver_ingot','moreores:silver_ingot'},
 		}
-})
+	})
+end
 
 minetest.register_craft({
 	output = 'technic:silver_locked_chest',