GameCodingCompleteLinux/Source/GCC4/GameCode4/GameCode.h

#pragma once
//========================================================================
// GameCode.h : Defines the entry point for the application.
//
// Part of the GameCode4 Application
//
// GameCode4 is the sample application that encapsulates much of the source code
// discussed in "Game Coding Complete - 4th Edition" by Mike McShaffry and David
// "Rez" Graham, published by Charles River Media. 
// ISBN-10: 1133776574 | ISBN-13: 978-1133776574
//
// If this source code has found it's way to you, and you think it has helped you
// in any way, do the authors a favor and buy a new copy of the book - there are 
// detailed explanations in it that compliment this code well. Buy a copy at Amazon.com
// by clicking here: 
//    http://www.amazon.com/gp/product/1133776574/ref=olp_product_details?ie=UTF8&me=&seller=
//
// There's a companion web site at http://www.mcshaffry.com/GameCode/
// 
// The source code is managed and maintained through Google Code: 
//    http://code.google.com/p/gamecode4/
//
// (c) Copyright 2012 Michael L. McShaffry and David Graham
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser GPL v3
// as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See 
// http://www.gnu.org/licenses/lgpl-3.0.txt for more details.
//
// You should have received a copy of the GNU Lesser GPL v3
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
//========================================================================

#include "../Mainloop/Initialization.h"
#include "../Debugging/Logger.h"
#include "BaseGameLogic.h"
#include <SDL3/SDL.h>

class EventManager;

//
// class GameCodeApp							- Chapter X, page Y
//
class GameCodeApp
{
	friend class OpenGLRenderer46;
	friend class LogMgr;
protected:
	SDL_Window *m_Window;
	SDL_Renderer *m_SdlRenderer;
	SDL_GLContext m_GlContext;
	bool m_bIsRunning;						// true if everything is initialized and the game is in the main loop
	bool m_bQuitRequested;					// true if the app should run the exit sequence
	bool m_bQuitting;						// true if the app is running the exit sequence
	Point m_screenSize;						// game screen size
	bool m_bIsEditorRunning;				// true if the game editor is running

public:
	const Point &GetScreenSize() { return m_screenSize; }

protected:
	std::map<std::string,std::string> m_textResource;
	std::map<std::string,unsigned int> m_hotkeys;

public:

	GameCodeApp();

	// Game Application Data
	// You must define these in an inherited
	// class - see TeapotWarsApp for an example
	// TODO(munnellg): uncomment and implement
	virtual std::string VGetGameTitle()=0;
	// virtual TCHAR *VGetGameAppDirectory()=0;
	// virtual SDL_Surface* VGetIcon()=0;

	SDL_Window* GetWindow() { return m_Window; }

	static int MsgProc(SDL_Event &e);

	// TODO(munnellg): uncomment and implement
	// int OnDisplayChange(int colorDepth, int width, int height);
	// int OnPowerBroadcast(int event);
	int OnSysCommand(SDL_Event const &e);
	// int OnClose();

	// TODO(munnellg): uncomment and implement
	// Game Application actions
	// int OnAltEnter();
	// int OnNcCreate(LPCREATESTRUCT cs);

	bool LoadStrings(std::string language);
	std::string GetString(std::string sID);

	virtual bool InitInstance(/*HINSTANCE hInstance, LPWSTR lpCmdLine, HWND hWnd = NULL, */int screenWidth = SCREEN_WIDTH, int screenHeight = SCREEN_HEIGHT);

	// FUTURE WORK - Seems like this class could be refactored, especailly the renderer !

	enum Renderer
	{
		Renderer_Unknown,
		Renderer_OpenGL46,
	};

	std::shared_ptr<IRenderer> m_Renderer;

	static Renderer GetRendererImpl();

	// OpenGL 4.6 Specific Stuff
	// static bool CALLBACK IsD3D11DeviceAcceptable( const CD3D11EnumAdapterInfo *AdapterInfo, UINT Output, const CD3D11EnumDeviceInfo *DeviceInfo, DXGI_FORMAT BackBufferFormat, bool bWindowed, void* pUserContext );
	// static HRESULT CALLBACK OnD3D11CreateDevice( ID3D11Device* pd3dDevice, const DXGI_SURFACE_DESC* pBackBufferSurfaceDesc, void* pUserContext );
	// static HRESULT CALLBACK OnD3D11ResizedSwapChain( ID3D11Device* pd3dDevice, IDXGISwapChain* pSwapChain, const DXGI_SURFACE_DESC* pBackBufferSurfaceDesc, void* pUserContext );
	// static void CALLBACK OnD3D11ReleasingSwapChain( void* pUserContext );
	// static void CALLBACK OnD3D11DestroyDevice( void* pUserContext );
	static void OnOpenGLFrameRender(double fTime, float fElapsedTime);

	static void OnUpdateGame(double fTime, float fElapsedTime);

	// GameCode Specific Stuff
	BaseGameLogic *m_pGame;
	struct GameOptions m_Options;
	
	// You must define these functions to initialize your game.
	// Look for them in TeapotWars.h and TeapotWars.cpp
	virtual BaseGameLogic *VCreateGameAndView()=0;
	virtual bool VLoadGame(void);
	// HumanView* GetHumanView();				// Added post press - it was convenient to grab the HumanView attached to the game.

	// File and Resource System
	class ResCache *m_ResCache;

	// Event manager
	EventManager *m_pEventManager;
	
public:
	// [gmunnelly] added for SDL/OpenGL compatibility. We must own the main loop
	void RunMainLoop();
	void Shutdown();
	void PumpSDLEvents();
	
	// Main loop processing
	void AbortGame() { m_bQuitting = true; }
	// TODO(munnellg): get proper exit code
	int GetExitCode() { return 0; }
	bool IsRunning() { return m_bIsRunning; }
	void SetQuitting(bool quitting) { m_bQuitting = quitting; }

	BaseGameLogic* GetGameLogic(void) const { return m_pGame; }
	
};


extern GameCodeApp *g_pApp;