Sort loot registration into respective mods (#2602)

mods/bucket/init.lua

@@ -225,3 +225,16 @@ minetest.register_craft({
 	replacements = {{"bucket:bucket_lava", "bucket:bucket_empty"}},
 })
 
+-- Register buckets as dungeon loot
+if minetest.global_exists("dungeon_loot") then
+	dungeon_loot.register({
+		{name = "bucket:bucket_empty", chance = 0.55},
+		-- water in deserts/ice or above ground, lava otherwise
+		{name = "bucket:bucket_water", chance = 0.45,
+			types = {"sandstone", "desert", "ice"}},
+		{name = "bucket:bucket_water", chance = 0.45, y = {0, 32768},
+			types = {"normal"}},
+		{name = "bucket:bucket_lava", chance = 0.45, y = {-32768, -1},
+			types = {"normal"}},
+	})
+end

mods/bucket/mod.conf

@@ -1,3 +1,4 @@
 name = bucket
 description = Minetest Game mod: bucket
 depends = default
+optional_depends = dungeon_loot