Working on interpolation

src/Character.h

@@ -12,6 +12,7 @@
 #include <vector>
 #include <unordered_map>
 #include <utility>
+#include <chrono>
 #include "dialogue/TranslationDatabase.h"
 #include "AudioPlayerAsync.h"
 
@@ -94,6 +95,7 @@ public:
     bool            isMoving() const;
     Eigen::Vector3f getRequestedWalkTarget() const;
     Eigen::Vector3f getCurrentNavigationTarget() const;
+    Eigen::Vector3f renderPosition() const;
     float           getHp() const;
 
     // ---- Weapon rendering data (initialized from state.creationInfo by createFromState) ----
@@ -124,7 +126,22 @@ private:
     VertexRenderStruct healthBarMesh;
     std::unordered_map<std::string, std::shared_ptr<Texture>> meshTextures;
 
+    struct PresentationSample {
+        Eigen::Vector3f position = Eigen::Vector3f::Zero();
+        float facingAngle = 0.0f;
+        float animationFrame = 0.0f;
+        AnimationState currentState = AnimationState::STAND;
+        bool enabled = true;
+    };
+
+    PresentationSample previousPresentationSample_;
+    PresentationSample currentPresentationSample_;
+    std::chrono::steady_clock::time_point lastPresentationUpdate_;
+    bool hasPresentationSample_ = false;
+
     AnimationState resolveActiveState(const CharacterState& state) const;
+    CharacterState interpolatedState(const CharacterState& state) const;
+    void updateAnimationForRender(const CharacterState& state);
     bool           prepareGpuSkinning(const CharacterState& state);
     void           drawAttachedWeapon(Renderer& renderer, const CharacterState& state);