Switching SceneItems to smarts

archive/animation/SimpleCallbackAnimation.hpp

@@ -0,0 +1,51 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "SimpleAnimation.hpp"
+
+namespace Dawn {
+  template<typename T, class I>
+  struct SimpleCallbackAnimation : public SimpleAnimation<T> {
+    protected:
+      I *instance;
+      void (I::*callback)(T arg);
+      T value;
+
+      /**
+       * Internally invoke the function that this animation is owning.
+       */
+      void invoke() {
+        assertNotNull(this->instance);
+        ((*this->instance).*(this->callback))(this->value);
+      }
+
+      void onValueModified() override {
+        SimpleAnimation<T>::onValueModified();
+        this->invoke();
+      }
+
+    public:
+      /**
+       * Construct a new Simple Function Animation object
+       */
+      SimpleCallbackAnimation() :
+        SimpleAnimation<T>(&value)
+      {
+      }
+
+      /**
+       * Sets the callback for the animation to use.
+       * 
+       * @param instance Instance of the object that has the callback.
+       * @param callback Callback method to be invoked.
+       */
+      void setCallback(I *instance, void (I::*callback)(T arg)) {
+        assertNotNull(instance);
+        this->instance = instance;
+        this->callback = callback;
+      }
+  };
+}