Animation motion() almost works but need to tweak the calculations so they go for the length of the animation?

animate2.hpp

@@ -23,6 +23,7 @@ namespace animate2 {
     int loop_count{0};
     size_t frame_count{frames.size()};
     sf::Clock timer{};
+    float subframe{0.0f};
   };
 
   struct Transform {
@@ -34,6 +35,7 @@ namespace animate2 {
     bool simple{true};
     bool flipped{false};
     float ease_rate{0.5f};
+    float speed{0.1f};
     bool scaled{false};
     bool stationary{false};
     // these can handled by the onLoop, same as ganim8 does it
@@ -75,7 +77,7 @@ namespace animate2 {
       void apply(sf::Sprite& sprite);
       void update_frame();
       void update();
-      void motion(sf::Vector2f& pos, sf::Vector2f& scale);
+      void motion(sf::Vector2f& pos_out, sf::Vector2f& scale_out);
   };
 
 }