niotso/Libraries/libvitaboy/Renderer.cpp

/*
 *		This Code Was Created By Jeff Molofee 2000
 *		A HUGE Thanks To Fredric Echols For Cleaning Up
 *		And Optimizing The Base Code, Making It More Flexible!
 *		If You've Found This Code Useful, Please Let Me Know.
 *		Visit My Site At nehe.gamedev.net
 */

#include <windows.h>		// Header File For Windows
#include <gl\gl.h>			// Header File For The OpenGL32 Library
#include <gl\glu.h>			// Header File For The GLu32 Library
#include <gl\glext.h>
#include "SOIL.h"
#include "libvitaboy.hpp"

HDC			hDC=NULL;		// Private GDI Device Context
HGLRC		hRC=NULL;		// Permanent Rendering Context
HWND		hWnd=NULL;		// Holds Our Window Handle
HINSTANCE	hInstance;		// Holds The Instance Of The Application

bool	keys[256] = {0};			// Array Used For The Keyboard Routine
bool	active=TRUE;		// Window Active Flag Set To TRUE By Default
bool	fullscreen=TRUE;	// Fullscreen Flag Set To Fullscreen Mode By Default

float zoom = -10;
struct CharacterPlacement_t {
    Vertex_t Translation;
    Vertex_t Rotation;
};

CharacterPlacement_t Character = {{0,-3,0}, {0,0,0}};

Skeleton_t Skeleton;

unsigned TextureCount = 3;
GLuint	texture[3];			// Storage For One Texture ( NEW )
enum { Texture_Body, Texture_Head, Texture_Hand };
const char* TexturePaths[] = {"body.jpg", "head.jpg", "hand.jpg"};

unsigned MeshCount = 4;
Mesh_t Meshes[4];
enum { Mesh_Body, Mesh_Head, Mesh_LHand, Mesh_RHand };
unsigned Mesh_UseTexture[] = { Texture_Body, Texture_Head, Texture_Hand, Texture_Hand };
const char* MeshActivate[] = {NULL, "HEAD", "L_HAND", "R_HAND"};

bool ShowMesh = true;
bool ShowSkeleton = true;

LRESULT	CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);	// Declaration For WndProc

int LoadGLTextures()									// Load Bitmaps And Convert To Textures
{
    for(int i=0; i<3; i++){
        /* load an image file directly as a new OpenGL texture */
        texture[i] = SOIL_load_OGL_texture(TexturePaths[i], SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID, SOIL_FLAG_MIPMAPS);
        if(texture[i] == 0)
            return false;

        // Typical Texture Generation Using Data From The Bitmap
        glBindTexture(GL_TEXTURE_2D, texture[i]);
        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    }
	return true;										// Return Success
}

void ReSizeGLScene(GLsizei width, GLsizei height)		// Resize And Initialize The GL Window
{
	if (height==0)										// Prevent A Divide By Zero By
	{
		height=1;										// Making Height Equal One
	}

	glViewport(0,0,width,height);						// Reset The Current Viewport

	glMatrixMode(GL_PROJECTION);						// Select The Projection Matrix
	glLoadIdentity();									// Reset The Projection Matrix

	// Calculate The Aspect Ratio Of The Window
	gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);

	glMatrixMode(GL_MODELVIEW);							// Select The Modelview Matrix
	glLoadIdentity();									// Reset The Modelview Matrix
}

int InitGL(void)										// All Setup For OpenGL Goes Here
{
	if (!LoadGLTextures())								// Jump To Texture Loading Routine ( NEW )
	{
		return FALSE;									// If Texture Didn't Load Return FALSE
	}

	glShadeModel(GL_SMOOTH);							// Enable Smooth Shading
	glClearColor(0.0f, 0.0f, 0.0f, 0.5f);				// Black Background
	glClearDepth(1.0f);									// Depth Buffer Setup
	glEnable(GL_DEPTH_TEST);							// Enables Depth Testing
    glEnable(GL_CULL_FACE);
    glEnable(GL_RESCALE_NORMAL);
    glDisable(GL_BLEND);
	glDepthFunc(GL_LEQUAL);								// The Type Of Depth Testing To Do
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);	// Really Nice Perspective Calculations
	return TRUE;										// Initialization Went OK
}

void TransformVertices(Bone_t& Bone){
    glTranslatef(Bone.Translation.x, Bone.Translation.y, Bone.Translation.z);
    float Matrix[16];
    FindQuaternionMatrix(Matrix, &Bone.Rotation);
    glMultMatrixf(Matrix);
    
    unsigned MeshIndex = 0;
    unsigned BoneIndex;

    for(unsigned i=1; i<MeshCount; i++){
        if(!strcmp(Bone.Name, MeshActivate[i])){
            MeshIndex = i;
            break;
        }
    }
    Mesh_t& Mesh = Meshes[MeshIndex];
    for(BoneIndex=0; BoneIndex<Mesh.BindingCount; BoneIndex++){
        if(!strcmp(Bone.Name, Mesh.BoneNames[Mesh.BoneBindings[BoneIndex].BoneIndex]))
            break;
    }

    if(BoneIndex < Mesh.BindingCount){
        for(unsigned i=0; i<Mesh.BoneBindings[BoneIndex].FixedVertexCount; i++){
            glTranslatef(Mesh.VertexData[Mesh.BoneBindings[BoneIndex].FirstFixedVertex + i].x,
                Mesh.VertexData[Mesh.BoneBindings[BoneIndex].FirstFixedVertex + i].y,
                Mesh.VertexData[Mesh.BoneBindings[BoneIndex].FirstFixedVertex + i].z);
            glGetFloatv(GL_MODELVIEW_MATRIX, Matrix);
            Mesh.TransformedVertexData[Mesh.BoneBindings[BoneIndex].FirstFixedVertex + i].x = Matrix[12];
            Mesh.TransformedVertexData[Mesh.BoneBindings[BoneIndex].FirstFixedVertex + i].y = Matrix[13];
            Mesh.TransformedVertexData[Mesh.BoneBindings[BoneIndex].FirstFixedVertex + i].z = Matrix[14];
            glTranslatef(-Mesh.VertexData[Mesh.BoneBindings[BoneIndex].FirstFixedVertex + i].x,
                -Mesh.VertexData[Mesh.BoneBindings[BoneIndex].FirstFixedVertex + i].y,
                -Mesh.VertexData[Mesh.BoneBindings[BoneIndex].FirstFixedVertex + i].z);
        }
        for(unsigned i=0; i<Mesh.BoneBindings[BoneIndex].BlendedVertexCount; i++){
            glTranslatef(Mesh.VertexData[Mesh.FixedVertexCount + Mesh.BoneBindings[BoneIndex].FirstBlendedVertex + i].x,
                Mesh.VertexData[Mesh.FixedVertexCount + Mesh.BoneBindings[BoneIndex].FirstBlendedVertex + i].y,
                Mesh.VertexData[Mesh.FixedVertexCount + Mesh.BoneBindings[BoneIndex].FirstBlendedVertex + i].z);
            glGetFloatv(GL_MODELVIEW_MATRIX, Matrix);
            Mesh.TransformedVertexData[Mesh.FixedVertexCount + Mesh.BoneBindings[BoneIndex].FirstBlendedVertex + i].x = Matrix[12];
            Mesh.TransformedVertexData[Mesh.FixedVertexCount + Mesh.BoneBindings[BoneIndex].FirstBlendedVertex + i].x = Matrix[13];
            Mesh.TransformedVertexData[Mesh.FixedVertexCount + Mesh.BoneBindings[BoneIndex].FirstBlendedVertex + i].x = Matrix[14];
            glTranslatef(-Mesh.VertexData[Mesh.FixedVertexCount + Mesh.BoneBindings[BoneIndex].FirstBlendedVertex + i].x,
                -Mesh.VertexData[Mesh.FixedVertexCount + Mesh.BoneBindings[BoneIndex].FirstBlendedVertex + i].y,
                -Mesh.VertexData[Mesh.FixedVertexCount + Mesh.BoneBindings[BoneIndex].FirstBlendedVertex + i].z);
        }
    }
    
    for(unsigned i=0; i<Bone.ChildrenCount; i++){
        glPushMatrix();
        TransformVertices(*Bone.Children[i]);
        glPopMatrix();
    }
}

void BlendVertices(){
    for(unsigned i=0; i<MeshCount; i++){
        Mesh_t& Mesh = Meshes[i];
        for(unsigned i=0; i<Mesh.BlendedVertexCount; i++){
            Mesh.TransformedVertexData[Mesh.FixedVertexCount + i].x =
                Mesh.BlendData[i].Weight * Mesh.TransformedVertexData[Mesh.FixedVertexCount + i].x +
                (1-Mesh.BlendData[i].Weight) * Mesh.TransformedVertexData[Mesh.BlendData[i].OtherVertex].x;
            Mesh.TransformedVertexData[Mesh.FixedVertexCount + i].y =
                Mesh.BlendData[i].Weight * Mesh.TransformedVertexData[Mesh.FixedVertexCount + i].y +
                (1-Mesh.BlendData[i].Weight) * Mesh.TransformedVertexData[Mesh.BlendData[i].OtherVertex].y;
            Mesh.TransformedVertexData[Mesh.FixedVertexCount + i].z =
                Mesh.BlendData[i].Weight * Mesh.TransformedVertexData[Mesh.FixedVertexCount + i].z +
                (1-Mesh.BlendData[i].Weight) * Mesh.TransformedVertexData[Mesh.BlendData[i].OtherVertex].z;
        }
    }
}

void DrawMeshes(){
    glPointSize(2.0);
    glColor3f(1.0, 1.0, 1.0);
    glPushMatrix();
    glLoadIdentity();
    TransformVertices(Skeleton.Bones[0]);
    glPopMatrix();
    BlendVertices();
    
    glEnable(GL_TEXTURE_2D);
    glEnableClientState(GL_VERTEX_ARRAY);
    glEnableClientState(GL_TEXTURE_COORD_ARRAY);

    for(unsigned i=0; i<MeshCount; i++){
        glBindTexture(GL_TEXTURE_2D, texture[Mesh_UseTexture[i]]);
        glVertexPointer(3, GL_FLOAT, offsetof(Vertex_t, y)-offsetof(Vertex_t, x)-sizeof(float), Meshes[i].TransformedVertexData);
        glTexCoordPointer(2, GL_FLOAT, offsetof(TextureVertex_t, v)-offsetof(TextureVertex_t, u)-sizeof(float), Meshes[i].TransformedTextureData);
        glDrawElements(GL_TRIANGLES, Meshes[i].FaceCount*3, GL_UNSIGNED_INT, Meshes[i].FaceData);
    }

    glDisableClientState(GL_VERTEX_ARRAY);
    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    glDisable(GL_TEXTURE_2D);
}

void DrawBonesSkeleton(Bone_t& Bone){
    glPointSize(5.0);
    glTranslatef(Bone.Translation.x, Bone.Translation.y, Bone.Translation.z);
    float RotationMatrix[16];
    FindQuaternionMatrix(RotationMatrix, &Bone.Rotation);
    glMultMatrixf(RotationMatrix);
    
    if(!strcmp(Bone.Name, "ROOT"))
        glColor3f(1.0, 0.0, 0.0);
    else if(!strcmp(Bone.Name, "HEAD"))
        glColor3f(1.0, 1.0, 0.0);
    else
        glColor3f(0.0, 1.0, 0.0);
    glBegin(GL_POINTS); glVertex3f(0, 0, 0); glEnd();
    
    for(unsigned i=0; i<Bone.ChildrenCount; i++){
        glPushMatrix();
        DrawBonesSkeleton(*Bone.Children[i]);
        glPopMatrix();
    }
}

int DrawGLScene(void)									// Here's Where We Do All The Drawing
{
    if(keys['A'])      /*{if(zoom <=-1.0f)  zoom+=0.05f; }*/ zoom+=0.05f;
    if(keys['S'])      /*{if(zoom >=-10.0f) zoom-=0.05f; }*/ zoom-=0.05f;
    if(keys[VK_UP]){    if((Character.Rotation.x-=1.0f) <=-360) Character.Rotation.x+=360; }
    if(keys[VK_DOWN]){  if((Character.Rotation.x+=1.0f) >=360)  Character.Rotation.x-=360; }
    if(keys[VK_LEFT]){  if((Character.Rotation.y-=1.0f) <=-360) Character.Rotation.y+=360; }
    if(keys[VK_RIGHT]){ if((Character.Rotation.y+=1.0f) >=360)  Character.Rotation.y-=360; }
    if(keys['X']){      if((Character.Rotation.z-=1.0f) <=-360) Character.Rotation.z+=360; }
    if(keys['Z']){      if((Character.Rotation.z+=1.0f) >=360)  Character.Rotation.z-=360; }
    if(keys['K']){      Character.Translation.y-=0.05f; }
    if(keys['I']){      Character.Translation.y+=0.05f; }
    if(keys['J']){      Character.Translation.x-=0.05f; }
    if(keys['L']){      Character.Translation.x+=0.05f; }

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);	// Clear The Screen And The Depth Buffer
    
    glLoadIdentity();
    glTranslatef(Character.Translation.x, Character.Translation.y, zoom + Character.Translation.z);
    glRotatef(Character.Rotation.x,1.0f,0.0f,0.0f);
    glRotatef(Character.Rotation.y,0.0f,1.0f,0.0f);
    glRotatef(Character.Rotation.z,0.0f,0.0f,1.0f);
    
    if(ShowMesh){
        glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
        glColor3f(1.0, 1.0, 1.0);
        
        DrawMeshes();
    }
    
    if(ShowSkeleton){
        glClear(GL_DEPTH_BUFFER_BIT);
        DrawBonesSkeleton(Skeleton.Bones[0]);
    }

	return TRUE;										// Keep Going
}

void KillGLWindow(void)								// Properly Kill The Window
{
	if (fullscreen)										// Are We In Fullscreen Mode?
	{
		ChangeDisplaySettings(NULL,0);					// If So Switch Back To The Desktop
		ShowCursor(TRUE);								// Show Mouse Pointer
	}

	if (hRC)											// Do We Have A Rendering Context?
	{
		if (!wglMakeCurrent(NULL,NULL))					// Are We Able To Release The DC And RC Contexts?
		{
			MessageBox(NULL,"Release Of DC And RC Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}

		if (!wglDeleteContext(hRC))						// Are We Able To Delete The RC?
		{
			MessageBox(NULL,"Release Rendering Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}
		hRC=NULL;										// Set RC To NULL
	}

	if (hDC && !ReleaseDC(hWnd,hDC))					// Are We Able To Release The DC
	{
		MessageBox(NULL,"Release Device Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hDC=NULL;										// Set DC To NULL
	}

	if (hWnd && !DestroyWindow(hWnd))					// Are We Able To Destroy The Window?
	{
		MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hWnd=NULL;										// Set hWnd To NULL
	}

	if (!UnregisterClass("OpenGL",hInstance))			// Are We Able To Unregister Class
	{
		MessageBox(NULL,"Could Not Unregister Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hInstance=NULL;									// Set hInstance To NULL
	}
}

/*	This Code Creates Our OpenGL Window.  Parameters Are:					*
 *	title			- Title To Appear At The Top Of The Window				*
 *	width			- Width Of The GL Window Or Fullscreen Mode				*
 *	height			- Height Of The GL Window Or Fullscreen Mode			*
 *	bits			- Number Of Bits To Use For Color (8/16/24/32)			*
 *	fullscreenflag	- Use Fullscreen Mode (TRUE) Or Windowed Mode (FALSE)	*/
 
BOOL CreateGLWindow(const char * title, int width, int height, int bits, bool fullscreenflag)
{
	GLuint		PixelFormat;			// Holds The Results After Searching For A Match
	WNDCLASS	wc;						// Windows Class Structure
	DWORD		dwExStyle;				// Window Extended Style
	DWORD		dwStyle;				// Window Style
	RECT		WindowRect;				// Grabs Rectangle Upper Left / Lower Right Values
	WindowRect.left=(long)0;			// Set Left Value To 0
	WindowRect.right=(long)width;		// Set Right Value To Requested Width
	WindowRect.top=(long)0;				// Set Top Value To 0
	WindowRect.bottom=(long)height;		// Set Bottom Value To Requested Height

	fullscreen=fullscreenflag;			// Set The Global Fullscreen Flag

	hInstance			= GetModuleHandle(NULL);				// Grab An Instance For Our Window
	wc.style			= CS_HREDRAW | CS_VREDRAW | CS_OWNDC;	// Redraw On Size, And Own DC For Window.
	wc.lpfnWndProc		= (WNDPROC) WndProc;					// WndProc Handles Messages
	wc.cbClsExtra		= 0;									// No Extra Window Data
	wc.cbWndExtra		= 0;									// No Extra Window Data
	wc.hInstance		= hInstance;							// Set The Instance
	wc.hIcon			= LoadIcon(NULL, IDI_WINLOGO);			// Load The Default Icon
	wc.hCursor			= LoadCursor(NULL, IDC_ARROW);			// Load The Arrow Pointer
	wc.hbrBackground	= NULL;									// No Background Required For GL
	wc.lpszMenuName		= NULL;									// We Don't Want A Menu
	wc.lpszClassName	= "OpenGL";								// Set The Class Name

	if (!RegisterClass(&wc))									// Attempt To Register The Window Class
	{
		MessageBox(NULL,"Failed To Register The Window Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;											// Return FALSE
	}
	
	if (fullscreen)												// Attempt Fullscreen Mode?
	{
		DEVMODE dmScreenSettings;								// Device Mode
		memset(&dmScreenSettings,0,sizeof(dmScreenSettings));	// Makes Sure Memory's Cleared
		dmScreenSettings.dmSize=sizeof(dmScreenSettings);		// Size Of The Devmode Structure
		dmScreenSettings.dmPelsWidth	= width;				// Selected Screen Width
		dmScreenSettings.dmPelsHeight	= height;				// Selected Screen Height
		dmScreenSettings.dmBitsPerPel	= bits;					// Selected Bits Per Pixel
		dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;

		// Try To Set Selected Mode And Get Results.  NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.
		if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
		{
			// If The Mode Fails, Offer Two Options.  Quit Or Use Windowed Mode.
			if (MessageBox(NULL,"The Requested Fullscreen Mode Is Not Supported By\nYour Video Card. Use Windowed Mode Instead?","NeHe GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
			{
				fullscreen=FALSE;		// Windowed Mode Selected.  Fullscreen = FALSE
			}
			else
			{
				// Pop Up A Message Box Letting User Know The Program Is Closing.
				MessageBox(NULL,"Program Will Now Close.","ERROR",MB_OK|MB_ICONSTOP);
				return FALSE;									// Return FALSE
			}
		}
	}

	if (fullscreen)												// Are We Still In Fullscreen Mode?
	{
		dwExStyle=WS_EX_APPWINDOW;								// Window Extended Style
		dwStyle=WS_POPUP;										// Windows Style
		ShowCursor(FALSE);										// Hide Mouse Pointer
	}
	else
	{
		dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;			// Window Extended Style
		dwStyle=WS_OVERLAPPEDWINDOW;							// Windows Style
	}

	AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle);		// Adjust Window To True Requested Size

	// Create The Window
	if (!(hWnd=CreateWindowEx(	dwExStyle,							// Extended Style For The Window
								"OpenGL",							// Class Name
								title,								// Window Title
								dwStyle |							// Defined Window Style
								WS_CLIPSIBLINGS |					// Required Window Style
								WS_CLIPCHILDREN,					// Required Window Style
								0, 0,								// Window Position
								WindowRect.right-WindowRect.left,	// Calculate Window Width
								WindowRect.bottom-WindowRect.top,	// Calculate Window Height
								NULL,								// No Parent Window
								NULL,								// No Menu
								hInstance,							// Instance
								NULL)))								// Dont Pass Anything To WM_CREATE
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Window Creation Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	static	PIXELFORMATDESCRIPTOR pfd=				// pfd Tells Windows How We Want Things To Be
	{
		sizeof(PIXELFORMATDESCRIPTOR),				// Size Of This Pixel Format Descriptor
		1,											// Version Number
		PFD_DRAW_TO_WINDOW |						// Format Must Support Window
		PFD_SUPPORT_OPENGL |						// Format Must Support OpenGL
		PFD_DOUBLEBUFFER,							// Must Support Double Buffering
		PFD_TYPE_RGBA,								// Request An RGBA Format
		bits,										// Select Our Color Depth
		0, 0, 0, 0, 0, 0,							// Color Bits Ignored
		0,											// No Alpha Buffer
		0,											// Shift Bit Ignored
		0,											// No Accumulation Buffer
		0, 0, 0, 0,									// Accumulation Bits Ignored
		16,											// 16Bit Z-Buffer (Depth Buffer)  
		0,											// No Stencil Buffer
		0,											// No Auxiliary Buffer
		PFD_MAIN_PLANE,								// Main Drawing Layer
		0,											// Reserved
		0, 0, 0										// Layer Masks Ignored
	};
	
	if (!(hDC=GetDC(hWnd)))							// Did We Get A Device Context?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Create A GL Device Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd)))	// Did Windows Find A Matching Pixel Format?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Find A Suitable PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if(!SetPixelFormat(hDC,PixelFormat,&pfd))		// Are We Able To Set The Pixel Format?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Set The PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if (!(hRC=wglCreateContext(hDC)))				// Are We Able To Get A Rendering Context?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Create A GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if(!wglMakeCurrent(hDC,hRC))					// Try To Activate The Rendering Context
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Activate The GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	ShowWindow(hWnd,SW_SHOW);						// Show The Window
	SetForegroundWindow(hWnd);						// Slightly Higher Priority
	SetFocus(hWnd);									// Sets Keyboard Focus To The Window
	ReSizeGLScene(width, height);					// Set Up Our Perspective GL Screen

	if (!InitGL())									// Initialize Our Newly Created GL Window
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Initialization Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	return TRUE;									// Success
}

LRESULT CALLBACK WndProc(	HWND	hWnd,			// Handle For This Window
							UINT	uMsg,			// Message For This Window
							WPARAM	wParam,			// Additional Message Information
							LPARAM	lParam)			// Additional Message Information
{
	switch (uMsg)									// Check For Windows Messages
	{
		case WM_ACTIVATE:							// Watch For Window Activate Message
		{
			// LoWord Can Be WA_INACTIVE, WA_ACTIVE, WA_CLICKACTIVE,
			// The High-Order Word Specifies The Minimized State Of The Window Being Activated Or Deactivated.
			// A NonZero Value Indicates The Window Is Minimized.
			if ((LOWORD(wParam) != WA_INACTIVE) && !((BOOL)HIWORD(wParam)))
				active=TRUE;						// Program Is Active
			else
				active=FALSE;						// Program Is No Longer Active

			return 0;								// Return To The Message Loop
		}

		case WM_SYSCOMMAND:							// Intercept System Commands
		{
			switch (wParam)							// Check System Calls
			{
				case SC_SCREENSAVE:					// Screensaver Trying To Start?
				case SC_MONITORPOWER:				// Monitor Trying To Enter Powersave?
				return 0;							// Prevent From Happening
			}
			break;									// Exit
		}

		case WM_CLOSE:								// Did We Receive A Close Message?
		{
			PostQuitMessage(0);						// Send A Quit Message
			return 0;								// Jump Back
		}

		case WM_KEYDOWN:							// Is A Key Being Held Down?
		{
			keys[wParam] = TRUE;					// If So, Mark It As TRUE
			return 0;								// Jump Back
		}

		case WM_KEYUP:								// Has A Key Been Released?
		{
			keys[wParam] = FALSE;					// If So, Mark It As FALSE
			return 0;								// Jump Back
		}

		case WM_SIZE:								// Resize The OpenGL Window
		{
			ReSizeGLScene(LOWORD(lParam),HIWORD(lParam));  // LoWord=Width, HiWord=Height
			return 0;								// Jump Back
		}
	}

	// Pass All Unhandled Messages To DefWindowProc
	return DefWindowProc(hWnd,uMsg,wParam,lParam);
}

int WINAPI WinMain(	HINSTANCE,		// Instance
					HINSTANCE,		// Previous Instance
					LPSTR,			// Command Line Parameters
					int)			// Window Show State
{
	MSG		msg;									// Windows Message Structure
	BOOL	done=FALSE;								// Bool Variable To Exit Loop

	// Ask The User Which Screen Mode They Prefer
	if (MessageBox(NULL,"Would You Like To Run In Fullscreen Mode?", "Start FullScreen?",MB_YESNO|MB_ICONQUESTION)==IDNO)
	{
		fullscreen=FALSE;							// Windowed Mode
	}
    
    HANDLE hFile;
    unsigned FileSize;
    uint8_t *InData;
    DWORD bytestransferred;
    
    hFile = CreateFile("skeleton.skel", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
    if(hFile == INVALID_HANDLE_VALUE){
        if(GetLastError() == ERROR_FILE_NOT_FOUND){
            MessageBox(NULL, "The specified skeleton does not exist.", "Error", MB_OK);
            return 0;
        }
        MessageBox(NULL, "The skeleton could not be opened for reading.", "Error", MB_OK);
        return 0;
    }
    FileSize = GetFileSize(hFile, NULL);
    InData = (uint8_t*) malloc(FileSize);
    if(InData == NULL){
        MessageBox(NULL, "Memory for the skeleton could not be allocated.", "Error", MB_OK);
        return 0;
    }
    if(!ReadFile(hFile, InData, FileSize, &bytestransferred, NULL) || bytestransferred != FileSize){
        MessageBox(NULL, "The skeleton could not be read.", "Error", MB_OK);
        return 0;
    }
    CloseHandle(hFile);
    
    VBFile.set(InData, FileSize);
    ReadSkeleton(Skeleton);
    free(InData);

    hFile = CreateFile("body.mesh", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
    if(hFile == INVALID_HANDLE_VALUE){
        if(GetLastError() == ERROR_FILE_NOT_FOUND){
            MessageBox(NULL, "body.mesh does not exist.", "Error", MB_OK);
            return 0;
        }
        MessageBox(NULL, "body.mesh could not be opened for reading.", "Error", MB_OK);
        return 0;
    }
    FileSize = GetFileSize(hFile, NULL);
    InData = (uint8_t*) malloc(FileSize);
    if(InData == NULL){
        MessageBox(NULL, "Memory for body.mesh could not be allocated.", "Error", MB_OK);
        return 0;
    }
    if(!ReadFile(hFile, InData, FileSize, &bytestransferred, NULL) || bytestransferred != FileSize){
        MessageBox(NULL, "body.mesh could not be read.", "Error", MB_OK);
        return 0;
    }
    CloseHandle(hFile);
    
    VBFile.set(InData, FileSize);
    ReadMesh(Meshes[0]);
    free(InData);
    
    hFile = CreateFile("head.mesh", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
    if(hFile == INVALID_HANDLE_VALUE){
        if(GetLastError() == ERROR_FILE_NOT_FOUND){
            MessageBox(NULL, "head.mesh does not exist.", "Error", MB_OK);
            return 0;
        }
        MessageBox(NULL, "head.mesh could not be opened for reading.", "Error", MB_OK);
        return 0;
    }
    FileSize = GetFileSize(hFile, NULL);
    InData = (uint8_t*) malloc(FileSize);
    if(InData == NULL){
        MessageBox(NULL, "Memory for head.mesh could not be allocated.", "Error", MB_OK);
        return 0;
    }
    if(!ReadFile(hFile, InData, FileSize, &bytestransferred, NULL) || bytestransferred != FileSize){
        MessageBox(NULL, "head.mesh could not be read.", "Error", MB_OK);
        return 0;
    }
    CloseHandle(hFile);
    
    VBFile.set(InData, FileSize);
    ReadMesh(Meshes[1]);
    free(InData);

    hFile = CreateFile("lhand.mesh", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
    if(hFile == INVALID_HANDLE_VALUE){
        if(GetLastError() == ERROR_FILE_NOT_FOUND){
            MessageBox(NULL, "lhand.mesh does not exist.", "Error", MB_OK);
            return 0;
        }
        MessageBox(NULL, "lhand.mesh could not be opened for reading.", "Error", MB_OK);
        return 0;
    }
    FileSize = GetFileSize(hFile, NULL);
    InData = (uint8_t*) malloc(FileSize);
    if(InData == NULL){
        MessageBox(NULL, "Memory for lhand.mesh could not be allocated.", "Error", MB_OK);
        return 0;
    }
    if(!ReadFile(hFile, InData, FileSize, &bytestransferred, NULL) || bytestransferred != FileSize){
        MessageBox(NULL, "lhand.mesh could not be read.", "Error", MB_OK);
        return 0;
    }
    CloseHandle(hFile);
    
    VBFile.set(InData, FileSize);
    ReadMesh(Meshes[2]);
    free(InData);

    hFile = CreateFile("rhand.mesh", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
    if(hFile == INVALID_HANDLE_VALUE){
        if(GetLastError() == ERROR_FILE_NOT_FOUND){
            MessageBox(NULL, "rhand.mesh does not exist.", "Error", MB_OK);
            return 0;
        }
        MessageBox(NULL, "rhand.mesh could not be opened for reading.", "Error", MB_OK);
        return 0;
    }
    FileSize = GetFileSize(hFile, NULL);
    InData = (uint8_t*) malloc(FileSize);
    if(InData == NULL){
        MessageBox(NULL, "Memory for rhand.mesh could not be allocated.", "Error", MB_OK);
        return 0;
    }
    if(!ReadFile(hFile, InData, FileSize, &bytestransferred, NULL) || bytestransferred != FileSize){
        MessageBox(NULL, "rhand.mesh could not be read.", "Error", MB_OK);
        return 0;
    }
    CloseHandle(hFile);
    
    VBFile.set(InData, FileSize);
    ReadMesh(Meshes[3]);
    free(InData);

	// Create Our OpenGL Window
	if (!CreateGLWindow("libvitaboy - Renderer",640,480,16,fullscreen))
	{
		return 0;									// Quit If Window Was Not Created
	}

	while(!done)									// Loop That Runs While done=FALSE
	{
		if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))	// Is There A Message Waiting?
		{
			if (msg.message==WM_QUIT)				// Have We Received A Quit Message?
			{
				done=TRUE;							// If So done=TRUE
			}
			else									// If Not, Deal With Window Messages
			{
				TranslateMessage(&msg);				// Translate The Message
				DispatchMessage(&msg);				// Dispatch The Message
			}
		}
		else										// If There Are No Messages
		{
			// Draw The Scene.  Watch For ESC Key And Quit Messages From DrawGLScene()
			if ((active && !DrawGLScene()) || keys[VK_ESCAPE])	// Active?  Was There A Quit Received?
			{
				done=TRUE;							// ESC or DrawGLScene Signalled A Quit
			}
			else									// Not Time To Quit, Update Screen
			{
				SwapBuffers(hDC);					// Swap Buffers (Double Buffering)
			}

			if (keys[VK_F1])						// Is F1 Being Pressed?
			{
				keys[VK_F1]=FALSE;					// If So Make Key FALSE
				KillGLWindow();						// Kill Our Current Window
				fullscreen=!fullscreen;				// Toggle Fullscreen / Windowed Mode
				// Recreate Our OpenGL Window
				if (!CreateGLWindow("NeHe's Solid Object Tutorial",640,480,16,fullscreen))
				{
					return 0;						// Quit If Window Was Not Created
				}
			}
		}
	}

	// Shutdown
	KillGLWindow();									// Kill The Window
	return (msg.wParam);							// Exit The Program
}