Some footstep tweaks (#9355)

* Lower footstep volume slightly

* more tweaks

Resources/Prototypes/Tiles/floors.yml

@@ -135,7 +135,7 @@
   is_subfloor: false
   can_crowbar: true
   footstep_sounds:
-    collection: footstep_floor
+    collection: footstep_plating
   friction: 0.30
   item_drop: FloorTileItemDirty
   thermalConductivity: 0.04
@@ -156,6 +156,21 @@
   thermalConductivity: 0.04
   heatCapacity: 10000
 
+- type: tile
+  id: FloorMetalDiamond
+  name: diamond plate floor
+  texture: "metaldiamond"
+  base_turfs:
+  - plating
+  is_subfloor: false
+  can_crowbar: true
+  footstep_sounds:
+    collection: footstep_hull
+  friction: 0.30
+  item_drop: FloorTileItemMetalDiamond
+  thermalConductivity: 0.04
+  heatCapacity: 10000
+
 - type: tile
   id: floor_rock_vault
   name: rock floor
@@ -572,21 +587,6 @@
   thermalConductivity: 0.04
   heatCapacity: 10000
 
-- type: tile
-  id: FloorMetalDiamond
-  name: diamond plate floor
-  texture: "metaldiamond"
-  base_turfs:
-  - plating
-  is_subfloor: false
-  can_crowbar: true
-  footstep_sounds:
-    collection: footstep_tile
-  friction: 0.30
-  item_drop: FloorTileItemMetalDiamond
-  thermalConductivity: 0.04
-  heatCapacity: 10000
-
 # Circuits
 - type: tile
   id: floor_green_circuit