//enemy part
	//glColor3f(1.0, 1.0, 1.0);
	glBindTexture(GL_TEXTURE_2D, texture[3]);
	glBegin(GL_QUADS);
		glTexCoord2f(0.0, 1.0f);glVertex3f((normalenemy.xpos-0.15), normalenemy.ypos+.4, 1.2f);
		glTexCoord2f(1.0f, 1.0f);glVertex3f((normalenemy.xpos+0.15), normalenemy.ypos+.4, 1.2f);
		glTexCoord2f(1.0f, 0.0f);glVertex3f((normalenemy.xpos+0.15), (normalenemy.ypos), 1.2f);
		glTexCoord2f(0.0f, 0.0f);glVertex3f((normalenemy.xpos-0.15), (normalenemy.ypos), 1.2f);
	glEnd();


	//grass part
	//glColor3f(0.0, 0.95, 0.0);
	glBindTexture(GL_TEXTURE_2D, texture[2]);
	glBegin(GL_QUADS);
		glTexCoord2f(0.0f, 0.0f);glVertex3f(2.5, -1.6f,  1.0f);
		glTexCoord2f(1.0f, 0.0f);glVertex3f(0, -1.6f,  1.0f);
		glTexCoord2f(1.0f, 1.0f);glVertex3f(0, -2.5f,  1.0f);		
		glTexCoord2f(0.0f, 1.0f);glVertex3f(2.5, -2.5f,  1.0f);
		
		glTexCoord2f(0.0f, 0.0f);glVertex3f(0, -1.6f,  1.0f);
		glTexCoord2f(1.0f, 0.0f);glVertex3f(-2.5, -1.6f,  1.0f);
		glTexCoord2f(1.0f, 1.0f);glVertex3f(-2.5, -2.5f,  1.0f);
		glTexCoord2f(0.0f, 1.0f);glVertex3f(0, -2.5f,  1.0f);
	glEnd();

/*
 *		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 <stdio.h>			// Header File For Standard Input/Output
#include <gl\gl.h>			// Header File For The OpenGL32 Library
#include <gl\glu.h>			// Header File For The GLu32 Library
#include <gl\glaux.h>		// Header File For The Glaux Library
#include <math.h>			// Header File For Windows Math Library		
#include <stdio.h>			// Header File For Standard Input/Output
#include <stdarg.h>
#include <cstdlib> //for rand() and srand()
#include<ctime> //for time(0)




#pragma comment(lib, "OpenGL32.lib") 
#pragma comment(lib, "GLu32.lib") 
#pragma comment(lib, "GLaux.lib") 

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];			// 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
bool	light;				// Lighting ON/OFF ( NEW )
bool	lp;					// L Pressed? ( NEW )
bool	fp;					// F Pressed? ( NEW )
bool	firstshot;
bool enemyaround;
float tankposhoriz;
float lastshot;
float newshot;
float lastmove, newmove;

GLfloat	xrot;				// X Rotation
GLfloat	yrot;				// Y Rotation
GLfloat xspeed;				// X Rotation Speed
GLfloat yspeed;				// Y Rotation Speed
GLfloat	z=-5.0f;			// Depth Into The Screen

GLfloat LightAmbient[]=		{ 0.5f, 0.5f, 0.5f, 1.0f };
GLfloat LightDiffuse[]=		{ 1.0f, 1.0f, 1.0f, 1.0f };
GLfloat LightPosition[]=	{ 0.0f, 0.0f, 2.0f, 1.0f };

GLuint	filter;				// Which Filter To Use
GLuint	texture[3];			// Storage For 3 Textures
GLuint	base;

struct bullet
{
	float ypos;
	float xpos;
	float speed;
	bullet *next;
};
bullet *headB;
bullet *tailB;
bullet *currentB;

struct enemy
{
	float ypos;
	float xpos;
	float speed;
	enemy *next;
};
enemy normalenemy;
//enemy *headE;
//enemy *tailE;
//enemy *currentE;

GLUquadricObj *quadratic;

void updatebullet();
void updateenemy();

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

AUX_RGBImageRec *LoadBMP(char *Filename)				// Loads A Bitmap Image
{
	FILE *File=NULL;									// File Handle

	if (!Filename)										// Make Sure A Filename Was Given
	{
		return NULL;									// If Not Return NULL
	}

	File=fopen(Filename,"r");							// Check To See If The File Exists

	if (File)											// Does The File Exist?
	{
		fclose(File);									// Close The Handle
		return auxDIBImageLoad(Filename);				// Load The Bitmap And Return A Pointer
	}

	return NULL;										// If Load Failed Return NULL
}

int LoadGLTextures()									// Load Bitmaps And Convert To Textures
{
	int Status=FALSE;									// Status Indicator

	AUX_RGBImageRec *TextureImage[1];					// Create Storage Space For The Texture

	memset(TextureImage,0,sizeof(void *)*1);           	// Set The Pointer To NULL

	// Load The Bitmap, Check For Errors, If Bitmap's Not Found Quit
	if (TextureImage[0]=LoadBMP("barrel.bmp"))
	{
		Status=TRUE;									// Set The Status To TRUE
		glGenTextures(1, &texture[0]);					// Create Three Textures
		// Create MipMapped Texture
		glBindTexture(GL_TEXTURE_2D, texture[0]);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);
		gluBuild2DMipmaps(GL_TEXTURE_2D, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);
	}
	if (TextureImage[0])								// If Texture Exists
	{
		if (TextureImage[0]->data)						// If Texture Image Exists
		{
			free(TextureImage[0]->data);				// Free The Texture Image Memory
		}

		free(TextureImage[0]);							// Free The Image Structure
	}
	/////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	if (TextureImage[0]=LoadBMP("normalshot3.bmp"))
	{
		Status=TRUE;									// Set The Status To TRUE

		glGenTextures(1, &texture[1]);					// Create The Texture

		// Typical Texture Generation Using Data From The Bitmap
		glBindTexture(GL_TEXTURE_2D, texture[1]);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);
		gluBuild2DMipmaps(GL_TEXTURE_2D, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);

	}

	if (TextureImage[0]=LoadBMP("ground.bmp"))
	{
		Status=TRUE;									// Set The Status To TRUE

		glGenTextures(1, &texture[2]);					// Create The Texture

		// Typical Texture Generation Using Data From The Bitmap
		glBindTexture(GL_TEXTURE_2D, texture[2]);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);
		gluBuild2DMipmaps(GL_TEXTURE_2D, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);

	}

	if (TextureImage[0]=LoadBMP("opencom.bmp"))
	{
		Status=TRUE;									// Set The Status To TRUE

		glGenTextures(1, &texture[3]);					// Create The Texture

		// Typical Texture Generation Using Data From The Bitmap
		glBindTexture(GL_TEXTURE_2D, texture[3]);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);
		gluBuild2DMipmaps(GL_TEXTURE_2D, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);

	}
	if (TextureImage[0]=LoadBMP("closedcom.bmp"))
	{
		Status=TRUE;									// Set The Status To TRUE

		glGenTextures(1, &texture[4]);					// Create The Texture

		// Typical Texture Generation Using Data From The Bitmap
		glBindTexture(GL_TEXTURE_2D, texture[4]);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);
		gluBuild2DMipmaps(GL_TEXTURE_2D, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);

	}



	if (TextureImage[0])									// If Texture Exists
	{
		if (TextureImage[0]->data)							// If Texture Image Exists
		{
			free(TextureImage[0]->data);					// Free The Texture Image Memory
		}

		free(TextureImage[0]);								// Free The Image Structure
	}
	////////////////////////////////////////////////////////////////////////////////////////
	
	tankposhoriz = 0.0f;
	firstshot = true;
	newmove = GetTickCount() * 0.001;
	srand(time(0)); 
	return Status;										// Return The Status
}

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

	glEnable(GL_TEXTURE_2D);							// Enable Texture Mapping
	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
	glDepthFunc(GL_LEQUAL);								// The Type Of Depth Testing To Do
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);	// Really Nice Perspective Calculations

	//glLightfv(GL_LIGHT1, GL_AMBIENT, LightAmbient);		// Setup The Ambient Light
	//glLightfv(GL_LIGHT1, GL_DIFFUSE, LightDiffuse);		// Setup The Diffuse Light
	//glLightfv(GL_LIGHT1, GL_POSITION,LightPosition);	// Position The Light
	//glEnable(GL_LIGHT1);	// Enable Light One
	/////
	quadratic=gluNewQuadric();
	gluQuadricNormals(quadratic, GLU_SMOOTH);			
	gluQuadricTexture(quadratic, GL_TRUE);

	return TRUE;										// Initialization Went OK
}

int DrawGLScene(GLvoid)									// Here's Where We Do All The Drawing
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);	// Clear The Screen And The Depth Buffer
	glLoadIdentity();									// Reset The View
	glTranslatef(0.0,0.0f,-7.0f);

	//untextured stuff first (drawn in the correct order :D  )
	glDisable(GL_TEXTURE_2D);
	glBegin(GL_QUADS);
		//draws the grass
		//glColor3f(0.0, 0.7, 0.0);
		


		//draws the main part of the tank>>>>>>>>>>>>>>>>>>>>
		glColor3f(0.5, 0.5, 0.5);
		//left side======================================
		glVertex3f((tankposhoriz-0.4), -1.61f, 1.0f);
		glVertex3f((tankposhoriz-0.4), -1.61f, 1.2f);
		glVertex3f((tankposhoriz-0.3), -1.51f, 1.2f);
		glVertex3f((tankposhoriz-0.3), -1.51f, 1.0f);
		//
		glVertex3f((tankposhoriz-0.4), -1.61f, 1.0f);
		glVertex3f((tankposhoriz-0.4), -1.61f, 1.2f);
		glVertex3f((tankposhoriz-0.4), -1.71f, 1.2f);
		glVertex3f((tankposhoriz-0.4), -1.71f, 1.0f);
		//
		glVertex3f((tankposhoriz-0.4), -1.71f, 1.0f);
		glVertex3f((tankposhoriz-0.4), -1.71f, 1.2f);
		glVertex3f((tankposhoriz-0.3), -1.81f, 1.2f);
		glVertex3f((tankposhoriz-0.3), -1.81f, 1.0f);
		//right side=====================================
		glVertex3f((tankposhoriz+0.4), -1.61f, 1.2f);
		glVertex3f((tankposhoriz+0.4), -1.61f, 1.0f);
		glVertex3f((tankposhoriz+0.3), -1.51f, 1.0f);
		glVertex3f((tankposhoriz+0.3), -1.51f, 1.2f);
		//
		glVertex3f((tankposhoriz+0.4), -1.61f, 1.0f);
		glVertex3f((tankposhoriz+0.4), -1.61f, 1.2f);
		glVertex3f((tankposhoriz+0.4), -1.71f, 1.2f);
		glVertex3f((tankposhoriz+0.4), -1.71f, 1.0f);
		//
		glVertex3f((tankposhoriz+0.4), -1.71f, 1.0f);
		glVertex3f((tankposhoriz+0.4), -1.71f, 1.2f);
		glVertex3f((tankposhoriz+0.3), -1.81f, 1.2f);
		glVertex3f((tankposhoriz+0.3), -1.81f, 1.0f);
		//front side=====================================
		//main part
		glVertex3f((tankposhoriz-0.3), -1.81f, 1.2f);
		glVertex3f((tankposhoriz+0.3), -1.81f, 1.2f);
		glVertex3f((tankposhoriz+0.3), -1.51f, 1.2f);
		glVertex3f((tankposhoriz-0.3), -1.51f, 1.2f);
		//left gap fill
		glVertex3f((tankposhoriz-0.3), -1.81f, 1.2f);
		glVertex3f((tankposhoriz-0.4), -1.71f, 1.2f);
		glVertex3f((tankposhoriz-0.4), -1.61f, 1.2f);
		glVertex3f((tankposhoriz-0.3), -1.51f, 1.2f);
		//right gap fill
		glVertex3f((tankposhoriz+0.3), -1.81f, 1.2f);
		glVertex3f((tankposhoriz+0.4), -1.71f, 1.2f);
		glVertex3f((tankposhoriz+0.4), -1.61f, 1.2f);
		glVertex3f((tankposhoriz+0.3), -1.51f, 1.2f);
		//top============================================
		glVertex3f((tankposhoriz-0.3), -1.51f, 1.2f);
		glVertex3f((tankposhoriz+0.3), -1.51f, 1.2f);
		glVertex3f((tankposhoriz+0.3), -1.51f, 1.0f);
		glVertex3f((tankposhoriz-0.3), -1.51f, 1.0f);
		//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
		//draws the contrast part of the tank
		glColor3f(0.6, 0.6, 0.6);
		//left side contrast gap
		glVertex3f((tankposhoriz-0.3), -1.54, 1.21f);
		glVertex3f((tankposhoriz-0.38), -1.62f, 1.21f);
		glVertex3f((tankposhoriz-0.38), -1.70f, 1.21f);
		glVertex3f((tankposhoriz-0.3), -1.78f, 1.21f);
		//right side contrast gap
		glVertex3f((tankposhoriz+0.3), -1.54, 1.21f);
		glVertex3f((tankposhoriz+0.38), -1.62f, 1.21f);
		glVertex3f((tankposhoriz+0.38), -1.70f, 1.21f);
		glVertex3f((tankposhoriz+0.3), -1.78f, 1.21f);
		//main contrast
		glVertex3f((tankposhoriz-0.3), -1.78f, 1.21f);
		glVertex3f((tankposhoriz+0.3), -1.78f, 1.21f);
		glVertex3f((tankposhoriz+0.3), -1.54f, 1.21f);
		glVertex3f((tankposhoriz-0.3), -1.54f, 1.21f);
		//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
		//turret draw
		//front
		glVertex3f((tankposhoriz-0.2), -1.41f, 1.2f);
		glVertex3f((tankposhoriz+0.2), -1.41f, 1.2f);
		glVertex3f((tankposhoriz+0.2), -1.51f, 1.2f);
		glVertex3f((tankposhoriz-0.2), -1.51f, 1.2f);
		//right side
		glVertex3f((tankposhoriz+0.2), -1.41f, 1.0f);
		glVertex3f((tankposhoriz+0.2), -1.41f, 1.2f);
		glVertex3f((tankposhoriz+0.2), -1.51f, 1.2f);
		glVertex3f((tankposhoriz+0.2), -1.51f, 1.0f);
		//left side
		glVertex3f((tankposhoriz-0.2), -1.41f, 1.2f);
		glVertex3f((tankposhoriz-0.2), -1.41f, 1.0f);
		glVertex3f((tankposhoriz-0.2), -1.51f, 1.0f);
		glVertex3f((tankposhoriz-0.2), -1.51f, 1.2f);
		//top turret
		glVertex3f((tankposhoriz+0.2), -1.41f, 1.0f);
		glVertex3f((tankposhoriz-0.2), -1.41f, 1.0f);
		glVertex3f((tankposhoriz-0.2), -1.41f, 1.2f);
		glVertex3f((tankposhoriz+0.2), -1.41f, 1.2f);
		//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
		//barrel draw




	

	glEnd();
	/*glBegin(GL_QUADS);
		glVertex3f((normalenemy.xpos-0.15), normalenemy.ypos, 1.2f);
		glVertex3f((normalenemy.xpos+0.15), normalenemy.ypos, 1.2f);
		glVertex3f((normalenemy.xpos+0.15), (normalenemy.ypos+.4), 1.2f);
		glVertex3f((normalenemy.xpos-0.15), (normalenemy.ypos+.4), 1.2f);
	glEnd();
	*/
	//TEXTURED DRAWING PART

	//resets the color so the textured surfaces display correctly
	glColor3f(1.0, 1.0, 1.0);
	glEnable(GL_TEXTURE_2D);
	glBindTexture(GL_TEXTURE_2D, texture[0]);
	glBegin(GL_QUADS);
		glTexCoord2f(0.0f, 0.0f); glVertex3f((tankposhoriz+0.05), -1.41f, 1.1f);
		glTexCoord2f(1.0f, 0.0f); glVertex3f((tankposhoriz-0.05), -1.41f, 1.1f);
		glTexCoord2f(1.0f, 1.0f); glVertex3f((tankposhoriz-0.05), -1.21f, 1.1f);
		glTexCoord2f(0.0f, 1.0f); glVertex3f((tankposhoriz+0.05), -1.21f, 1.1f);
	glEnd();
	
	//enemy part
	//glColor3f(1.0, 1.0, 1.0);
	glBindTexture(GL_TEXTURE_2D, texture[3]);
	glBegin(GL_QUADS);
		glTexCoord2f(0.0, 1.0f);glVertex3f((normalenemy.xpos-0.15), normalenemy.ypos+.4, 1.2f);
		glTexCoord2f(1.0f, 1.0f);glVertex3f((normalenemy.xpos+0.15), normalenemy.ypos+.4, 1.2f);
		glTexCoord2f(1.0f, 0.0f);glVertex3f((normalenemy.xpos+0.15), (normalenemy.ypos), 1.2f);
		glTexCoord2f(0.0f, 0.0f);glVertex3f((normalenemy.xpos-0.15), (normalenemy.ypos), 1.2f);
	glEnd();


	//grass part
	//glColor3f(0.0, 0.95, 0.0);
	glBindTexture(GL_TEXTURE_2D, texture[2]);
	glBegin(GL_QUADS);
		glTexCoord2f(0.0f, 0.0f);glVertex3f(2.5, -1.6f,  1.0f);
		glTexCoord2f(1.0f, 0.0f);glVertex3f(0, -1.6f,  1.0f);
		glTexCoord2f(1.0f, 1.0f);glVertex3f(0, -2.5f,  1.0f);		
		glTexCoord2f(0.0f, 1.0f);glVertex3f(2.5, -2.5f,  1.0f);
		
		glTexCoord2f(0.0f, 0.0f);glVertex3f(0, -1.6f,  1.0f);
		glTexCoord2f(1.0f, 0.0f);glVertex3f(-2.5, -1.6f,  1.0f);
		glTexCoord2f(1.0f, 1.0f);glVertex3f(-2.5, -2.5f,  1.0f);
		glTexCoord2f(0.0f, 1.0f);glVertex3f(0, -2.5f,  1.0f);
	glEnd();
	/*
	glTexCoord2f(0.0f, 0.0f);glVertex3f(2.5, -1.6f,  1.0f);
	glTexCoord2f(1.0f, 0.0f);glVertex3f(-2.5, -1.6f,  1.0f);
	glTexCoord2f(1.0f, 1.0f);glVertex3f(-2.5, -2.5f,  1.0f);
	glTexCoord2f(0.0f, 1.0f);glVertex3f(2.5, -2.5f,  1.0f);
	*/

	

	
	//draws the bullets
	glColor3f(1.0, 1.0, 1.0);
	glEnable(GL_TEXTURE_2D);
	glBindTexture(GL_TEXTURE_2D, texture[1]);
	glBegin(GL_QUADS);
		currentB = headB;
		glColor3f(1.0, 1.0, 1.0);
		while(currentB != NULL)
		{
			glTexCoord2f(0.0f, 0.0f); glVertex3f((currentB->xpos-.07), (currentB->ypos),  1.09f);
			glTexCoord2f(1.0f, 0.0f); glVertex3f((currentB->xpos+.07), (currentB->ypos),  1.09f);
			glTexCoord2f(1.0f, 1.0f); glVertex3f((currentB->xpos+.07), (currentB->ypos+.2),  1.09f);
			glTexCoord2f(0.0f, 1.0f); glVertex3f((currentB->xpos-.07), (currentB->ypos+.2),  1.09f);
			currentB = currentB->next;
		}
	glEnd();
	

	
	return TRUE;										// Keep Going
}

GLvoid KillGLWindow(GLvoid)								// 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(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
		{
			if (!HIWORD(wParam))					// Check Minimization State
			{
				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	hInstance,			// Instance
					HINSTANCE	hPrevInstance,		// Previous Instance
					LPSTR		lpCmdLine,			// Command Line Parameters
					int			nCmdShow)			// 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
	//}

	// Create Our OpenGL Window
	if (!CreateGLWindow("TANK game v1.0",600,705,16,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)
				
				newmove = GetTickCount() * 0.01;
				if((newmove - lastmove) > 0.001)
				{
					if(keys['A'] || keys[VK_LEFT])
					{
						if(tankposhoriz > -2.5)
						{
							tankposhoriz-= .06f;
						}
						else
						{
							tankposhoriz = 2.4;
						}
					}
					if(keys['D'] || keys[VK_RIGHT])
					{
						if(tankposhoriz < 2.5)
						{
							tankposhoriz+= .06f;
						}
						else
						{
							tankposhoriz = -2.4;
						}
					}
					/////////////////////////////
					if(keys[VK_SPACE])
					{
						newshot = GetTickCount() * 0.001;
						if((newshot - lastshot) > .7)
						{
							bullet *shot;
							shot = new bullet;
							if(firstshot == true)
							{
								headB = shot;
								currentB = headB;
								tailB = currentB;
								tailB->next = NULL;
								currentB->xpos = tankposhoriz;
								currentB->ypos = -1.3;
								currentB->speed = .03;
								currentB->next = NULL;
								firstshot = false;
							}
							else
							{
								currentB = tailB;
								currentB->next = shot;
								currentB = shot;
								currentB->next = NULL;
								currentB->xpos = tankposhoriz;
								currentB->ypos = -1.3;
								currentB->speed = .03;
								tailB = currentB;
							}
							keys[VK_SPACE] = false;
							lastshot = newshot;
						}
					}
					lastmove = newmove;
					if(firstshot == false)
						updatebullet();
					if(enemyaround == false)
					{
						//set the values for the enemy portion of the code
						normalenemy.ypos = 2.5;
						normalenemy.speed = .02;
						normalenemy.xpos = -22+rand()%(45);
						normalenemy.xpos = normalenemy.xpos*.1;
						enemyaround = true;
					}
					updateenemy();
				}
			}
		}
	}

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

void updatebullet()
{
	currentB = headB;
	if(currentB->ypos > 2.5)
	{
		if(currentB->next != NULL)
		{
			currentB = currentB->next;
			delete headB;
			headB = currentB;
		}
		else
		{
			firstshot = true;
		}
	}
	while(currentB != NULL)
	{
  		currentB->ypos = (currentB->ypos + currentB->speed);
		currentB = currentB->next;
	}
}

void updateenemy()
{
	if(normalenemy.ypos > -1.7)
	{
		normalenemy.ypos = normalenemy.ypos - normalenemy.speed;
	}
	else
	{
		enemyaround = false;
		//set the information for the enemy on the ground
	}
	//float ypos;
	//float xpos;
	//float speed;
}