Animator won't crash anymore when there's an error, and instead displays an error message.

animate2.cpp

@@ -51,6 +51,7 @@ namespace animate2 {
   }
 
   void Animate2::play_sound() {
+    // BUG: this can be optimized way better
     if(sounds.contains(form_name)) {
       fmt::println("Playing sound for {}", form_name);
       for(auto& [at_frame, sound_name] : sounds.at(form_name)) {
@@ -58,6 +59,8 @@ namespace animate2 {
           sound::play(sound_name);
         }
       }
+    } else {
+      fmt::println("Animation has not sound {}", form_name);
     }
   }
 
@@ -169,6 +172,10 @@ namespace animate2 {
     //     scale_out.x, scale_out.y);
   }
 
+  bool Animate2::has_form(const std::string& as_form) {
+    return forms.contains(as_form);
+  }
+
   void Animate2::set_form(const std::string& as_form) {
     dbc::check(forms.contains(as_form),
         fmt::format("form {} does not exist in animation", as_form));