/**
    \file 
        TestCullingTerrainApplication.h
*/
#include "CEGUIForwardRefs.h"
#include "ExampleApplication.h"
#include "OgreOcclusionCullingSceneTraverser.h"
#include "TerrainContentGenerator.h"

Real timeDelay = 0;
#define KEY_PRESSED(_key,_timeDelay, _macro) \
{ \
    if (mInputDevice->isKeyDown(_key) && timeDelay <= 0) \
{ \
    timeDelay = _timeDelay; \
    _macro ; \
} \
}

String mCurrentAlgorithmCaptions[OcclusionCullingSceneTraverser::NUM_RENDERMODES] = 
{
    "Cull Frustum", 
	"Stop and Wait", 
	"Coherent Occlusion Culling"
};

class MouseQueryListener : public ExampleFrameListener, public MouseListener, public MouseMotionListener
{
public:

    MouseQueryListener(RenderWindow* win, Camera* cam, SceneManager *sceneManager, 
		CEGUI::Renderer *renderer, RayQueryExecutor *rqe);


    ~MouseQueryListener( );

	bool frameStarted(const FrameEvent& evt);
	bool frameEnded(const FrameEvent& evt);

    /* MouseListener callbacks. */
    virtual void mouseClicked(MouseEvent* e) { }
    virtual void mouseEntered(MouseEvent* e) { }
    virtual void mouseExited(MouseEvent* e)  { }

    // This is when the mouse button goes DOWN.
    virtual void mousePressed(MouseEvent* e);

    // This is when the mouse button is let UP.
    virtual void mouseReleased(MouseEvent* e);

    /* MouseMotionListener callbacks */
    virtual void mouseMoved (MouseEvent *e);
   
    // This is when the mouse is clicked, held and dragged.
    virtual void mouseDragged (MouseEvent *e);

    void keyPressed(KeyEvent* e);

	void keyReleased(KeyEvent* e);
	void keyClicked(KeyEvent* e);

	void changeAlgorithm();
	void changeThreshold(int incr);
	void changeStats();

protected:
    bool mLMouseDown, mRMouseDown;     // True if the mouse buttons are down
    SceneManager *mSceneMgr;           // A pointer to the scene manager
    
	CEGUI::Renderer *mGUIRenderer;     // cegui renderer
	
	bool mShutdownRequested;
	int mCurrentAlgorithm;
	int mThreshold;

	OverlayElement *mAlgorithmInfo;
	OverlayElement *mThresholdInfo;
	OverlayElement *mFrustumCulledNodesInfo;
	OverlayElement *mQueryCulledNodesInfo;
    OverlayElement *mTraversedNodesInfo;
	OverlayElement *mHierarchyNodesInfo;
	OverlayElement *mSceneNodesInfo;
	OverlayElement *mRenderedNodesInfo;

	SceneNode *mCurrentObject;         // The newly created object
	RaySceneQuery *mRaySceneQuery;     // The ray scene query pointer
	int mCount;                        // The number of robots on the screen

	RayQueryExecutor *mRayQueryExecutor;
};


class TestCullingTerrainApplication : public ExampleApplication
{
public:
	~TestCullingTerrainApplication();

protected:
	void createScene(void);
	void createFrameListener(void);
	void setupGui(void);
	virtual void createCamera(void);

	/** 
		generates a new scene object 
		@param tranlationRatio ratio between minimal and maximal possible translation
		@param rotationRatio ratio between minimal and maximal possible rotation
		@idx the index of the new object
		@entName the name of the object entity
	*/
	void generateSceneObject(const Vector3 &translationRatio, const Vector3 &rotationRatio, 
							 const int idx, const String &entName);

	CEGUI::OgreCEGUIRenderer *mGUIRenderer;
	CEGUI::System *mGUISystem;
	RayQueryExecutor *mRayQueryExecutor;
	TerrainContentGenerator *mTerrainContentGenerator;

	Vector3 mMinTranslation;
	Vector3 mMaxTranslation;

	Vector3 mMinAngle;
	Vector3 mMaxAngle;

private:
	void chooseSceneManager(void);
};