I have been trying to add a firing button for my spaceship but it did not shown once I try to compile it.

Code:

Code :
static GLsizei width, height;
 
static int shipX = 0, shipY = 0; // Ship Position
 
static bool isShoot = false; // Shooting bullet
static int isAnimate = 0; // Animated?
static int animationPeriod = 100; // Time interval between frames
static float t = 0; // Time parameter
 
class Bullet
{
public:
    Bullet(int x, int y)
    {
        xPos = x;
        yPos = y;
    }
    Bullet(){};
 
    void DrawBullet(void);
 
    void SetPosition(int x, int y)
    {
        xPos = x;
        yPos = y;
    }
 
    int xPos;
    int yPos;
 
 
};
 
// Draw Bullet
void Bullet::DrawBullet()
{
    glColor3f(0, 0, 1);
 
    glPushMatrix();
 
    glPointSize(3);
    glBegin(GL_POINTS);
    glVertex3f(xPos, yPos, 0);
 
    glPopMatrix();
}
 
vector<Bullet> bullets;
vector<Bullet>::iterator bulletsIt;
Bullet bulletsCur;
 
// Draw Ship
void DrawShip()
{
    glPushMatrix();
 
    glColor3f(0.0, 1.0, 0.0);
 
    glBegin(GL_TRIANGLE_STRIP);
    glVertex3f(6, 0, 0.0);
    glVertex3f(0, -1.5, 0.0);
    glVertex3f(0, 1.5, 0.0);
    glVertex3f(6, 0, 0.0);
    glEnd();
 
    glPopMatrix();
}
 
 
 
 
void drawScene(void)
{
glClearColor(0.0f, 0.0f, 0.0f, 1.0f );
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
////// SHIP ////////////////////////////////////////
    glPushMatrix();
 
    glTranslatef(shipX, shipY, 0);
 
    DrawShip();
 
    glPopMatrix();
/////////////////////////////////////////////////////
 
////// Bullet ////////////////////////////////////////
    if (isShoot)
    {
        bulletsIt = bullets.begin();
        while (bulletsIt != bullets.end())
        {
            bulletsIt->DrawBullet();
            bulletsIt++;
        }
        bulletsCur.DrawBullet();
    }
/////////////////////////////////////////////////////
 
 
    glutSwapBuffers();
 
glutPostRedisplay();
}
 
 
 
void moveBullet()
{
    bullets.back().xPos = shipX + t;
 
 
    glutPostRedisplay();
}
 
void animate(int value)
{
    if (isAnimate)
    {
        isShoot = true;
        t += 1;
    }
    moveBullet();
    glutTimerFunc(animationPeriod, animate, 1);
    glutPostRedisplay();
}
 
 
void keyInput(unsigned char key, int x, int y)
{
    switch (key) 
    {
     case 32:
            if (!isShoot)
            {
                if (isAnimate)
                {
                    isAnimate = 0;
                    bulletsCur = Bullet(x, y);
                }
                else
                {
                    isAnimate = 1;
                    bullets.push_back(bulletsCur);
                }
            }
            break;
    case 27:
        exit(0);
        break;
 
    default:
        break; 
    }
    glutPostRedisplay();
}
 
// Callback routine for non-ASCII key entry.
void specialKeyInput(int key, int x, int y)
{
    float tempxPos = shipX, tempyPos = shipY;
 
    switch(key)
    {
    case GLUT_KEY_DOWN : 
 
 
        tempyPos = shipY - 1;
 
        break;
    case GLUT_KEY_UP :
 
 
        tempyPos = shipY + 1;
 
        break;
    case GLUT_KEY_LEFT:
 
        tempxPos = shipX - 1;
 
        break;
    case GLUT_KEY_RIGHT:
 
        tempxPos = shipX + 1;
 
        break;
    default:
        break;
    }
 
    shipX = tempxPos;
    shipY = tempyPos;
 
    glutPostRedisplay();
}
 
void setup(void) 
{
    glClearColor (0.0, 0.0, 0.0, 0.0);
}
 
void resize(int w, int h)
{
    glViewport (0, 0, (GLsizei)w, (GLsizei)h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
 
    glOrtho(-90.0, 90.0, -50.0, 50.0, -1.0, 1.0);
 
    width = w;
    height = h;
 
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
}
 
void printInteraction(void)
{
    cout << "Help" << endl;
    cout << "Use the arrow keys to hover over the button and press enter to select the button" << endl;
    //cout << "Click on the left mouse button behind the line to shoot the bullet" << endl;
    //cout << "Click on the object to get score" << endl;
}
 
int main(int argc, char **argv) 
{
    printInteraction();
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DOUBLE); 
    glutInitWindowSize(1000, 600);
    glutInitWindowPosition(150, 100); 
    glutCreateWindow("Defender.cpp");
    setup();
    glutDisplayFunc(drawScene);
    glutReshapeFunc(resize);
    glutKeyboardFunc(keyInput);
    //glutKeyboardUpFunc(keyboardUp);
    //glutMouseFunc(mouseControl);
    glutSpecialFunc(specialKeyInput);
    //glutTimerFunc(5, animate, 1);
 
    glutMainLoop();
 
    return 0;
}