// New3DSLoader.cpp : Defines the entry point for the application.
//

#if !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_)
#define AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define WIN32_LEAN_AND_MEAN		// Exclude rarely-used stuff from Windows headers


// Windows Header Files:
#include <windows.h>

// C RunTime Header Files
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>



#define SCREEN_WIDTH 800								// We want our screen width 800 pixels
#define SCREEN_HEIGHT 600								// We want our screen height 600 pixels
#define SCREEN_DEPTH 16									// We want 16 bits per pixel


// Local Header Files

#include <gl\gl.h>										// Header File For The OpenGL32 Library
#include <gl\glu.h>										// Header File For The GLu32 Library
#include <gl\glaux.h>
#include <mmsystem.h>
//程序路徑
extern char g_sAppPath[512];
//素材路徑
extern char g_sMediaPath[512];
//紋理ID
extern UINT g_Texture[100];

//函數(shù)聲明
void CreateTexture(UINT textureArray[], LPSTR strFileName, int textureID);
void GetFilePath(char * filename);

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_)
#include <math.h>
#include "resource.h"

#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "glu32.lib")
#pragma comment(lib, "glaux.lib")

#include "3dsModel.h"


#define SCREEN_WIDTH 800								// We want our screen width 800 pixels
#define SCREEN_HEIGHT 600								// We want our screen height 600 pixels
#define SCREEN_DEPTH 16									// We want 16 bits per pixel

//程序路徑
char g_sAppPath[512];
//模型路徑
char g_sMediaPath[512];
//紋理號表（100個）
UINT g_Texture[100] = {0};						// This holds the texture info, referenced by an ID

//全局參數(shù)
bool  g_bFullScreen = true;	
UINT g_ViewMode;							// Set full screen as default
BOOL g_bLighting=FALSE;
HWND  g_hWnd;											// This is the handle for the window
RECT  g_rRect;											// This holds the window dimensions
HDC   g_hDC;											// General HDC - (handle to device context)
HGLRC g_hRC;											// General OpenGL_DC - Our Rendering Context for OpenGL
HINSTANCE g_hInstance;									// This holds the global hInstance for UnregisterClass() in DeInit()

float g_fEyeX=0;
float g_fEyeZ=0;
float g_fEyeY=5;
float g_fRotateAngle=3.14f;
//鏟車
float g_fChanCheOffy=0;
//旋轉(zhuǎn)標(biāo)志
BOOL  g_bRotating=TRUE;

//4個模型
C3DSModel g_3dsModel[4];


//
ATOM				MyRegisterClass(HINSTANCE hInstance);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK	About(HWND, UINT, WPARAM, LPARAM);
HWND CreateMyWindow(LPSTR strWindowName, int width, int height, DWORD dwStyle, bool bFullScreen, HINSTANCE hInstance);
void ChangeToFullScreen();
WPARAM MainLoop();

void InitializeOpenGL(int width, int height);
void SizeOpenGLScreen(int width, int height);
bool bSetupPixelFormat(HDC hdc);

void Init(HWND hWnd);
void DeInit();

void RenderScene();
void UpdateScene();
void PlayTheSound();

//設(shè)置燈光（位置）
void SetLight();

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
	HWND hWnd;
	//應(yīng)用程序路徑
	GetModuleFileName(hInstance,g_sAppPath,512);
	GetFilePath (g_sAppPath);
	//素材路徑
	strcpy(g_sMediaPath,g_sAppPath);
	strcat(g_sMediaPath,"models\\");
	//是否使用全屏幕模式
	if(MessageBox(NULL, "是否使用全屏幕模式?", "窗口選擇", MB_YESNO | MB_ICONQUESTION) == IDNO)
		g_bFullScreen = false;
	//生成窗口
	hWnd = CreateMyWindow("www.bvrain.com", SCREEN_WIDTH, SCREEN_HEIGHT, 0, g_bFullScreen, hInstance);
	// 如果沒有成功，退出
	if(hWnd == NULL) return true;
	// 初始化OPENGL
	Init(hWnd);													
	// 主循環(huán)
	return MainLoop();
}
//生成窗口
HWND CreateMyWindow(LPSTR strWindowName, int width, int height, DWORD dwStyle, bool bFullScreen, HINSTANCE hInstance)
{
	HWND hWnd;
	// 注冊窗口類
	MyRegisterClass(hInstance);
	//全屏幕判斷
	if(bFullScreen && !dwStyle) 						// Check if we wanted full screen mode
	{													// Set the window properties for full screen mode
		dwStyle = WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
		ChangeToFullScreen();							// Go to full screen
		//ShowCursor(FALSE);								// Hide the cursor
	}
	else if(!dwStyle)									// Assign styles to the window depending on the choice
		dwStyle = WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
	
	g_hInstance = hInstance;							// Assign our global hInstance to the window's hInstance

	RECT rWindow;
	if(bFullScreen)
	{
		rWindow.left	= 0;
		rWindow.right	= width;						// Set Right Value To Requested Width
		rWindow.top	    = 0;
		rWindow.bottom	= height;
	}
	else
	{
		rWindow.left	= (GetSystemMetrics(SM_CXSCREEN)-width)/2;	// Set Left Value To 0
		rWindow.right	= rWindow.left+width;						// Set Right Value To Requested Width
		rWindow.top	    = (GetSystemMetrics(SM_CYSCREEN)-height)/2;	// Set Top Value To 0
		rWindow.bottom	= rWindow.top+height;						// Set Bottom Value To Requested Height
	}
	AdjustWindowRect( &rWindow, dwStyle, false);		// Adjust Window To True Requested Size

														// Create the window
	hWnd = CreateWindow("bvrain", strWindowName, dwStyle, rWindow.left, rWindow.top,
						width, height, 
						NULL, NULL, hInstance, NULL);

	if(!hWnd) return NULL;								// If we could get a handle, return NULL

	ShowWindow(hWnd, SW_SHOWNORMAL);					// Show the window
	UpdateWindow(hWnd);									// Draw the window

	SetFocus(hWnd);										// Sets Keyboard Focus To The Window	

	return hWnd;
}

//注冊窗口類
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX); 

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= (WNDPROC)WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, (LPCTSTR)IDI_NEW3DSLOADER);
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= (LPCSTR)IDC_NEW3DSLOADER;
	wcex.lpszClassName	= "bvrain";
	wcex.hIconSm		= LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);

	return RegisterClassEx(&wcex);
}
//窗口消息處理函數(shù)
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
    LONG    lRet = 0; 
    PAINTSTRUCT    ps;

	switch (uMsg) 
	{
		case WM_COMMAND:
			wmId    = LOWORD(wParam); 
			wmEvent = HIWORD(wParam); 
			// Parse the menu selections:
			switch (wmId)
			{
				case IDM_ABOUT:
				   DialogBox(g_hInstance, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
				   break;
				case IDM_EXIT:
				    PostQuitMessage(0);	
				   break;
				default:
				   return DefWindowProc(hWnd, uMsg, wParam, lParam);
			}
			break;
    case WM_SIZE:										// If the window is resized
		if(!g_bFullScreen)								// Do this only if we are NOT in full screen
		{
			SizeOpenGLScreen(LOWORD(lParam),HIWORD(lParam));// LoWord=Width, HiWord=Height
			GetClientRect(hWnd, &g_rRect);				// Get the window rectangle
		}
        break; 
 
	case WM_PAINT:										// If we need to repaint the scene
		BeginPaint(hWnd, &ps);							// Init the paint struct		
		EndPaint(hWnd, &ps);							// EndPaint, Clean up
		break;

	case WM_LBUTTONDOWN:								// If the left mouse button was clicked
		g_bRotating=!g_bRotating;		
		break;

	case WM_RBUTTONDOWN:								// If the right mouse button was clicked.
		
		g_bLighting = !g_bLighting;						// Turn lighting ON/OFF

		if(g_bLighting) {								// If lighting is ON
			glEnable(GL_LIGHTING);						// Enable OpenGL lighting
		} else {
			glDisable(GL_LIGHTING);						// Disable OpenGL lighting
		}
		break;

	case WM_KEYDOWN:									// If we pressed a key

		switch(wParam) {								// Check if we hit a key
			case VK_ESCAPE:								// If we hit the escape key
				PostQuitMessage(0);						// Send a QUIT message to the window