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Graphics2/SceneNode.h

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+#pragma once
+#include "core.h"
+#include "DirectXCore.h"
+
+using namespace std;
+
+// Abstract base class for all nodes of the scene graph.  
+// This scene graph implements the Composite Design Pattern
+
+class SceneNode;
+
+typedef shared_ptr<SceneNode>	SceneNodePointer;
+
+class SceneNode : public enable_shared_from_this<SceneNode>
+{
+public:
+	SceneNode(wstring name) {_name = name; XMStoreFloat4x4(&_worldTransformation, XMMatrixIdentity()); };
+	~SceneNode(void) {};
+
+	// Core methods
+	virtual bool Initialise() = 0;
+	virtual void Update(FXMMATRIX& currentWorldTransformation) { XMStoreFloat4x4(&_combinedWorldTransformation, XMLoadFloat4x4(&_worldTransformation) * currentWorldTransformation); }
+	virtual void Render() = 0;
+	virtual void Shutdown() = 0;
+
+	void SetWorldTransform(FXMMATRIX& worldTransformation) { XMStoreFloat4x4(&_worldTransformation, worldTransformation); }
+		
+	// Although only required in the composite class, these are provided
+	// in order to simplify the code base.
+	virtual void Add(SceneNodePointer node) {}
+	virtual void Remove(SceneNodePointer node) {};
+	virtual	SceneNodePointer Find(wstring name) { return (_name == name) ? shared_from_this() : nullptr; }
+
+protected:
+	XMFLOAT4X4			_worldTransformation;
+	XMFLOAT4X4			_combinedWorldTransformation;
+	wstring				_name;
+};
+