help needed on copter game

the below given program is a copter game , anyone please help me to make following changes on the program
– display the score of the game in the same gui of opengl instead of terminating into terminal.
– differntly shaped obstacles for every level-up (like polygon, square,oval, etc)
– make the mouse’s right button as the key to drag the copter down


#include<stdlib.h>
#include<GL/glut.h>
#include<time.h>
#include<stdio.h>

static GLfloat a=-40;
static GLfloat spin = 0,ii=0,jj=0;
float bspd=0.08; // block dx value
char name[25];
float b1x=50.0,b1y=0;//block 1 init position
float hm=0.0;//copter moving dy value
int i=0,sci=1;float scf=1; // for increment score score_int score_flag
char scs[20],slevel[20];
//to store score_string using itoa() and level as well
int level=1,lflag=1,wflag=1; //level_flag & welcome_flag init w/ 1

void init(void)
{
    srand(time(0));
    b1y=(rand()%45)+10;//b/w 10 to 44
    glClearColor (0.0, 0.0, 0.0, 0.0);
    glShadeModel (GL_SMOOTH);
    glLoadIdentity ();
    glOrtho(0.0, 100.0, 0.0, 100.0, -1.0 , .0);
}

void drawcopter()
{
//front
    glColor3f(1.0f, 1.0f, 0.0f);
    glBegin(GL_TRIANGLES);
    glVertex2i(19,45.8);
    glVertex2i(22,45.8);
    glVertex2i(20,49.8);
    glEnd();

    glColor3f(1.0f, 1.0f, 0.0f);
    glRectf(10,49.8,19.8,44.8);//body
    glColor3f(0.698, 0.133, 0.133);
    glRectf(2,46,10,48);//tail
    glColor3f(1.000, 0.843, 0.000);
    glRectf(2,46,4,51);//tail up
    glColor3f(1.000, 0.843, 0.000);
    glRectf(14,49.8,15.8,52.2);//propeller stand
    glColor3f(0.000, 0.749, 1.000);
    glRectf(7,53.6,22.8,52.2);//propeller top/
}

void renderBitmapString(float x,float y,float z,void *font,char*string)
{
    char *c;
    glRasterPos3f(x, y,z);
    for(c=string; *c != '\0'; c++)
    {
        glutBitmapCharacter(font, *c);
    }
}

void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT);
//GameOver Checking
    if((i==730||i==-700)
//top and bottom checking
       ||(((int)b1x==10||(int)b1x==7||(int)b1x==4||(int)b1x==1) &&(int)b1y<53+(int)hm&&(int)b1y+35>53+(int)hm)
// propeller front checking
       ||(((int)b1x==9||(int)b1x==3||(int)b1x==6) &&(int)b1y<45+(int)hm&&(int)b1y+35>45+(int)hm)
//lower body checking
       ||( ((int)b1x==0) && (int)b1y<46+(int)hm&&(int)b1y+35>46+(int)hm))
// lower tail checking
    {
        glColor3f(0.0,0.0,1.0);
        glRectf(0.0,0.0,100.0,100.0);
        glColor3f(1.0,0.0,0.0);
        renderBitmapString(40,70,0,GLUT_BITMAP_HELVETICA_18,"GAME OVER!!!");
        glColor3f(1.0,1.0,1.0);
        renderBitmapString(25,58,0,GLUT_BITMAP_TIMES_ROMAN_24,"You");
        renderBitmapString(45,58,0,GLUT_BITMAP_TIMES_ROMAN_24,"scor d: ");
        renderBitmapString(70,58,0,GLUT_BITMAP_TIMES_ROMAN_24,scs);
        glutSwapBuffers();
        glFlush();
        printf("
********************************GAME OVER********************************

");
        printf("Result
-----------

");
        printf("Name : %s" ,name);
        printf("
Level Covered : %d 
Score : %s

" ,level,scs);
//printf("

Close the console window to exit...

");
//getch();
        exit(0);
    }
    else if(wflag==1)//Welcome Screen
    {
        wflag=0;
        glColor3f(0.545, 0.000, 0.000);
        glRectf(0.0,0.0,100.0,10.0);//ceil
        glRectf(0.0,100.0,100.0,90.0);//floor
        glColor3f(1.0,1.0,1.0);
        glColor3f(1.0,1.0,0.0);
        renderBitmapString(45.5,70,0,GLUT_BITMAP_TIMES_ROMAN_24,"2D Copter Game");
        glColor3f(1.0,0.0,0.0);
        renderBitmapString(40,45,0,GLUT_BITMAP_TIMES_ROMAN_24,"Welcome");
        renderBitmapString(53,45,0,GLUT_BITMAP_TIMES_ROMAN_24,name);
        renderBitmapString(43,30,0,GLUT_BITMAP_TIMES_ROMAN_24,"Click To Start");
//renderBitmapString(17,24,0,GLUT_BITMAP_9_BY_15,"CLICK AND HOLD LEFT MOUSE BUTTON TO GO UP RELEASE TO GO DOWN");
        glColor3f(0.0,0.0,0.0);
        drawcopter();
        glutSwapBuffers();
        glFlush();
    }
    else
    {
//on every increase by 50 in score in each level
        if(sci%50==0&&lflag==1)
        {
            lflag=0; //make level_flag=0
            level++;//increase level by 1
            bspd+=0.01;//increase block_dx_speed by 0.01
        }
//within every level make level_flag=1
        else if(sci%50!=0&&lflag!=1)
        {
            lflag=1;
        }
        glPushMatrix();
        glColor3f(0.545, 0.000, 0.000);
        glRectf(0.0,0.0,100.0,10.0); //ceil
        glRectf(0.0,100.0,100.0,90.0); //floor
        glColor3f(0.0,0.0,0.0); //score
        renderBitmapString(1,3,0,GLUT_BITMAP_TIMES_ROMAN_24,"Distance:");
//glColor3f(0.7,0.7,0.7);
        sprintf(slevel,"%d",level); //level
        renderBitmapString(80,3,0,GLUT_BITMAP_TIMES_ROMAN_24,"Level:");
        renderBitmapString(93,3,0,GLUT_BITMAP_TIMES_ROMAN_24,slevel);

        scf+=0.025; //so less as program run very fast
        sci=(int)scf;
        sprintf(scs,"%d",sci);
//from int to char convertion to display score
        renderBitmapString(20,3,0,GLUT_BITMAP_TIMES_ROMAN_24,scs);
        glTranslatef(0.0,hm,0.0);
// hm(=dy) changes occur by mouse func
        drawcopter(); //helicopter
//if wall move towards left & get out of projection volume
        if(b1x<-10)
        {
            b1x=50; //total width is 50
            b1y=(rand()%25)+20;
        }
        else
            b1x-=bspd;
//within the projection volume dec its x value by block_speed
        glTranslatef(b1x,-hm,0.0);
        glColor3f(1.0,0.0,0.0);
        glRectf(b1x,b1y,b1x+5,b1y+35);//block 1
        glPopMatrix();
        glutSwapBuffers();
        glFlush();
    }
}

void moveHeliU(void)
{
    hm+=0.05;
    i++;
    glutPostRedisplay();
}

void moveHeliD()
{
    hm-=0.05;
    i--;
    glutPostRedisplay();
}


void mouse(int button, int state, int x, int y)
{
    switch (button)
    {
        case GLUT_LEFT_BUTTON:
            if (state == GLUT_DOWN)
                glutIdleFunc(moveHeliU);
            else if (state == GLUT_UP)
                glutIdleFunc(moveHeliD);
            break;
        default: break;
    }
}
void keys(unsigned char key,int x,int y)
{
    if(key=='8') glutIdleFunc(moveHeliU);
    if(key=='2') glutIdleFunc(moveHeliD);
}

int main(int argc, char** argv)
{
    printf("

*************************** 2D Copter Game ***************************");
    printf("

Enter your name to play: ");
    scanf("%s",name);
    glutInit(&argc, argv);
    glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
    glutInitWindowSize (800, 600);
    glutInitWindowPosition (200,200);
    glutCreateWindow ("2D Copter Game");
    init();
    glutDisplayFunc(display);
    glutMouseFunc(mouse);
    glutKeyboardFunc(keys);
    glutMainLoop();
    return 0;
}

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