add textured asteroid "Lum" with cave system and light orb

src/defs.txt

@@ -96,6 +96,20 @@ actor 3000 0 0 moonlet
     scale 500
     angularmomentum 0 0.015 0
 
+actor 220 -2400 410 asteroid_lum
+    relativeto player
+    name Lum
+    id Lum
+    collider mesh
+    density 10000000000
+    scale 300
+    angularmomentum 0 0.015 0
+    actor -80 0 0 lightorb
+        relativeto Lum
+        name "Light Orb"
+        scale 0.3
+        light FF8F4A 500000
+
 actor -200 -110 1000 satellite
     name "Communications Satellite"
     relativeto player

src/world.rs

@@ -27,6 +27,7 @@ pub fn asset_name_to_path(name: &str) -> &'static str {
         "suit_ar_chefhat" => "models/suit_ar_chefhat.glb#Scene0",
         "asteroid1" => ASSET_ASTEROID1,
         "asteroid2" => ASSET_ASTEROID2,
+        "asteroid_lum" => "models/asteroid_lum.glb#Scene0",
         "moonlet" => "models/moonlet.glb#Scene0",
         "monolith" => "models/monolith_neon.glb#Scene0",
         "lightorb" => "models/lightorb.glb#Scene0",