voice no longer hard-coded, bogeydope ordering fix, tripwire ignoring on-ground units

src/tripwire.rs

@@ -45,6 +45,10 @@ fn tripwire(
             }
 
             for (n_id, n_position, n_heading) in npc.iter() {
+                if n_position.angels() == 0 {
+                    // ignore on-ground units
+                    continue;
+                }
                 let distance = n_position.distance_to_nmi(p_position);
                 if distance <= p_tripwire.range && !p_tripwire.reported.contains(n_id) {
                     p_tripwire.reported.push(*n_id);