+static void world_routes_verify_run( u32 route, double new_pass_time )
+{
+ struct subworld_routes *r = subworld_routes();
+ if( r->current_run_version == 0 ) return;
+
+ u32 stack[64];
+ u32 si = world_routes_get_path( r->routes[route].start, stack );
+
+ /*
+ * we only care about gates that ref gates, so shuffle down the array
+ */
+ u32 sj = 0;
+ for( u32 i=0; i<si; i++ )
+ if( r->nodes[stack[i]].is_gate && r->nodes[stack[(i+1)%si]].is_gate )
+ stack[sj ++] = r->nodes[stack[i]].gate_id;
+
+ /*
+ * run versions & times must always ASCEND apart from exactly once, where
+ * the tail connects to the head
+ */
+
+ vg_info("Verifying run (%u)\n", route);
+
+ u32 descend_allowance = 1;
+ double lap_time = 0.0;
+
+ for( u32 i=0; i<sj; i++ )
+ {
+ struct route_gate *pa = &r->gates[stack[i]],
+ *pb = &r->gates[stack[(i+1) % sj]];
+
+ vg_info( " pa: %u, pb: %u\n", pa->passed_version, pb->passed_version );
+
+ int version_inorder = 0;
+ double diff = 0.0;
+
+ if( pb->passed_version == pa->passed_version+1 )
+ {
+ version_inorder = 1;
+ diff = pb->time_passed - pa->time_passed;
+ }
+ else if( pb->passed_version == pa->passed_version+1-sj &&
+ pa->passed_version+1 == r->current_run_version )
+ {
+ version_inorder = 1;
+ diff = new_pass_time - pa->time_passed;
+ }
+
+ if( !version_inorder )
+ return;
+
+ lap_time += diff;
+ }
+
+ /* We've now verified the run was completed correctly */
+ vg_success( "Lap time set. route %u: %lf\n", route, lap_time );
+}
+
+static void world_routes_activate_gate( u32 id )
+{
+ struct subworld_routes *r = subworld_routes();
+ struct route_gate *ig = &r->gates[id];
+ struct route_node *pnode = &r->nodes[ig->node_id],
+ *pdest = &r->nodes[pnode->next[0]];
+
+ r->active_gate = id;
+
+ for( u32 i=0; i<r->route_count; i++ )
+ {
+ struct route *route = &r->routes[i];
+
+ route->active = 0;
+ for( u32 j=0; j<pdest->ref_count; j++ )
+ {
+ if( pdest->route_ids[j] == i )
+ {
+ world_routes_verify_run( i, vg_time );
+ route->active = 1;
+ break;
+ }
+ }
+ }
+
+ ig->time_passed = vg_time;
+ ig->passed_version = r->current_run_version;
+ r->current_run_version ++;
+}
+