Now have a timer for animations that does ticks with deltatime...maybe it works.

tools/animator.cpp

@@ -1,3 +1,4 @@
+#define FSM_DEBUG 1
 #include "sound.hpp"
 #include "ai.hpp"
 #include "animation.hpp"
@@ -11,6 +12,9 @@
 #include <guecs/ui.hpp>
 #include "gui/event_router.hpp"
 #include "gui/guecstra.hpp"
+#include "animate2.hpp"
+
+bool YES_SYNC=true;
 
 namespace animator {
   struct UI {
@@ -53,6 +57,7 @@ namespace animator {
 
   enum class State {
     START=__LINE__,
+    ANIMATE=__LINE__,
     END=__LINE__,
   };
 
@@ -63,20 +68,41 @@ namespace animator {
 
     void init(const std::string &sprite_name) {
       $ui.init(sprite_name);
-      $window.setVerticalSyncEnabled(VSYNC);
-      if(FRAME_LIMIT) $window.setFramerateLimit(FRAME_LIMIT);
+
+      if(YES_SYNC) {
+        $window.setVerticalSyncEnabled(VSYNC);
+        if(FRAME_LIMIT) $window.setFramerateLimit(FRAME_LIMIT);
+      }
+
       $window.setPosition({0,0});
     }
 
     void event(game::Event ev, std::any data={}) {
       switch($state) {
         FSM_STATE(State, START, ev);
+        FSM_STATE(State, ANIMATE, ev);
         FSM_STATE(State, END, ev);
       }
     }
 
     void START(game::Event ev) {
-      state(State::START);
+      switch(ev) {
+        case game::Event::TICK:
+          state(State::ANIMATE);
+          break;
+        default:
+          state(State::START);
+      }
+    }
+
+    void ANIMATE(game::Event ev) {
+      switch(ev) {
+        case game::Event::TICK:
+          // stuff
+          break;
+        default:
+          state(State::START);
+      }
     }
 
     void END(game::Event ev) {
@@ -132,8 +158,20 @@ int main(int argc, char* argv[]) {
   animator::FSM main;
   main.init(argv[1]);
 
+  animate2::Timer timer;
+  timer.start();
+
   while(main.active()) {
+    timer.begin();
     main.render();
+    auto [ticks, alpha] = timer.commit();
+    fmt::println("TICK: {}, alpha: {}", ticks, alpha);
+
+    for(int i = 0; i < ticks; i++) {
+      main.event(game::Event::TICK, {});
+    }
+
+    // do something with alpha....
     main.handle_keyboard_mouse();
   }