First attempt to play audio

src/dawn/scene/components/display/ShaderInterface.hpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "scene/components/display/Material.hpp"
+#include "scene/SceneItem.hpp"
+
+namespace Dawn {
+  template<class T>
+  class ShaderInterface : public SceneItemComponent {
+    public:
+      /**
+       * ShaderInterface to provide a common interface language for all shaders
+       * that can be referenced by scene components.
+       * 
+       * @param i SceneItem this Shader interface belongs to.
+       */
+      ShaderInterface(SceneItem *i)  : SceneItemComponent(i) {}
+
+      /**
+       * Sets the shader for this shader interface to use. Will also update the
+       * underlying material for you.
+       * 
+       * @param shader Shader to use for this interface.
+       */
+      void setShader(T *shader) {
+        assertNotNull(shader);
+        this->getMaterial()->setShader(shader);
+      }
+
+      /**
+       * Returns the shader, assuming that the material has the correct shader.
+       * 
+       * @return Pointer to the shader.
+       */
+      T * getShader() {
+        auto material =  dynamic_cast<T*>(this->getMaterial()->getShader());
+        return material;
+      }
+
+      /**
+       * Returns the material attached to this scene item.
+       * 
+       * @return The attached material.
+       */
+      Material * getMaterial() {
+        auto mat = this->item->getComponent<Material>();
+        assertNotNull(mat);
+        return mat;
+      }
+      
+      std::vector<SceneItemComponent*> getDependencies() override {
+        return std::vector<SceneItemComponent*>{
+          this->item->getComponent<Material>()
+        };
+      }
+  };
+}