split it into separate files

scripts/powerballtarget.lua

@@ -0,0 +1,27 @@
+stone_sounds = {}
+stone_sounds.footstep = {name = "stone_walk", gain = 1.0}
+stone_sounds.dug = {name = "stone_break", gain = 1.0}
+stone_sounds.place = {name = "block_place", gain = 1.0}
+glass_sounds = {}
+glass_sounds.footstep = {name = "glass_walk", gain = 1.0}
+glass_sounds.dug = {name = "glass_break", gain = 1.0}
+glass_sounds.place = {name = "block_place", gain = 1.0}
+wood_sounds = {}
+wood_sounds.footstep = {name = "wood_walk", gain = 1.0}
+wood_sounds.dug = {name = "wood_break", gain = 1.0}
+wood_sounds.place = {name = "block_place", gain = 1.0}
+minetest.register_node(
+    "portalgun:powerballtarget",
+    {
+        description = "Power ball target",
+        tiles = {"portalgun_powerballstarget.png"},
+        groups = {mesecon = 2, cracky = 2},
+        mesecons = {receptor = {state = "off"}},
+        sounds = stone_sounds,
+        is_ground_content = false,
+        on_timer = function(pos, elapsed)
+            mesecon.receptor_off(pos)
+            return false
+        end
+    }
+)