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app/legion/rendermanager.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: The main manager of rendering 
+//
+// $Revision: $
+// $NoKeywords: $
+//===========================================================================//
+
+#ifndef RENDERMANAGER_H
+#define RENDERMANAGER_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "gamemanager.h"
+#include "tier1/mempool.h"
+#include "mathlib/mathlib.h"
+
+
+//-----------------------------------------------------------------------------
+// Physics property for entities
+//-----------------------------------------------------------------------------
+class CCameraProperty
+{
+	DECLARE_FIXEDSIZE_ALLOCATOR( CCameraProperty );
+
+public:
+	CCameraProperty();
+	void GetForward( Vector *pForward );
+
+	// Array used for fixed-timestep simulation
+	Vector m_Origin;
+	QAngle m_Angles;
+	Vector m_Velocity;
+	QAngle m_AngVelocity;
+
+private:
+	friend class CRenderManager;
+};
+
+
+//-----------------------------------------------------------------------------
+// Rendering management 
+//-----------------------------------------------------------------------------
+class CRenderManager : public CGameManager<>
+{
+public:
+	// Inherited from IGameManager
+	virtual bool Init();
+	virtual LevelRetVal_t LevelInit( bool bFirstCall );
+	virtual void Update( );
+	virtual LevelRetVal_t LevelShutdown( bool bFirstCall );
+	virtual void Shutdown();
+
+	// Property allocation
+	CCameraProperty *CreateCameraProperty();
+	void DestroyCameraProperty( CCameraProperty *pProperty );
+
+	void RenderWorldInRect( int x, int y, int nWidth, int nHeight );
+	void RenderWorldFullscreen();
+
+private:
+	// Set up a projection matrix for a 90 degree fov
+	void SetupProjectionMatrix( int nWidth, int nHeight, float flFOV );
+
+	// Set up a orthographic projection matrix
+	void SetupOrthoMatrix( int nWidth, int nHeight );
+
+	// Sets up the camera
+	void SetupCameraRenderState( );
+
+	// Draws the world
+	void RenderWorld();
+
+	// Done completely client-side, want total smoothness, so simulate at render interval
+	void UpdateLocalPlayerCamera();
+
+	bool m_bRenderWorldFullscreen;
+	int m_nRenderX;
+	int m_nRenderY;
+	int m_nRenderWidth;
+	int m_nRenderHeight;
+};
+
+
+//-----------------------------------------------------------------------------
+// Singleton accessor
+//-----------------------------------------------------------------------------
+extern CRenderManager *g_pRenderManager;
+
+
+#endif // RENDERMANAGER_H
+