nilrider:: do not switch level on saving a usergen level

rogueviz/nilrider/level.cpp

@@ -579,7 +579,7 @@ void cleanup_textures() {
   cleanup_texture(castle_texture);
   }
 
-void load_level(const string& fname) {
+void load_level(const string& fname, bool init) {
   fhstream f(fname, "r");
   if(!f.f) throw hr_exception("could not open file ");
   level lev("Untitled", '1', nrlUserCreated, "", -1, 1, 1, -1, {}, 0, 0, {}, rot_plane, { goal{0x40FF40, "Collect all the triangles", basic_check(999, 999)} });
@@ -659,9 +659,11 @@ void load_level(const string& fname) {
       }
     else throw hr_exception("cannot use the same name as an official level");
     }
-  curlev = new level(lev);
-  all_levels.emplace_back(curlev);
-  if(on) curlev->init();
+  if(init) {
+    curlev = new level(lev);
+    all_levels.emplace_back(curlev);
+    if(on) curlev->init();
+    }
   }
 
 }

rogueviz/nilrider/nilrider.cpp

@@ -317,7 +317,7 @@ void pick_level() {
   dialog::add_action([] {
     dialog::openFileDialog(fname, XLAT("level to load:"), ".nrl", [] () {
       try {
-        load_level(fname);
+        load_level(fname, true);
         return true;
         }
       catch(hr_exception& e) {
@@ -771,7 +771,7 @@ auto celldemo = arg::add3("-unilcycle", initialize) + arg::add3("-unilplan", []
       if(on) curlev->init();
       })
     + arg::add3("-load-level", [] {
-      arg::shift(); load_level(arg::args());
+      arg::shift(); load_level(arg::args(), true);
       })
     + arg::add3("-simplemodel", [] {
       nisot::geodesic_movement = false;

rogueviz/nilrider/save.cpp

@@ -100,7 +100,7 @@ void load() {
     if(s == "*RLE") { have_rle = true; continue; }
     if(s == "*FILE") {
       string s1 = scanline_noblank(f);
-      try { load_level(s1); }
+      try { load_level(s1, false); }
       catch(hr_exception& e) { println(hlog, "error: could not load level ", s1, ", reason: ", e.what()); }
       }
     if(s == "*MANUAL") {