//=======================================================================
// Display Function
//=======================================================================
void Display(void)
{
current_time = glutGet(GLUT_ELAPSED_TIME);
if(current_time - previous_time > 15)
{
previous_time = current_time;
elapsedTimeLastFrame = current_time - lastFrame;
glClear(GL_COLOR_BUFFER_BIT);
switch(GameState)
{
case GAMEOVER:
glColor3f(1.0, 0.0, 0.0);
glLineWidth(20);
renderText("GAME OVER", WIDTH/5, HEIGHT/2, 10);
glLineWidth(1);
DisplayScore();
break;
case GAMEPLAY:
glColor3f(1.0, 1.0, 1.0);
Ship(WIDTH/2, HEIGHT/2, shipRotation);
EnemyList.Render(elapsedTimeLastFrame);
glColor3f(1,0,0);
bulletsList.Render(elapsedTimeLastFrame);
if(fireLaser)
Laser();
DisplayScore();
DisplayHints();
CalculateFPS();
DisplayFPS();
break;
}
/* update animation */
bulletsList.CheckCollision(&EnemyList);
lastFrame = current_time;
glutSwapBuffers();
}
glutPostRedisplay();
}
//=======================================================================
// Timer Function
//=======================================================================
void timer(int)
{
/* update animation */
CalculateFPS();
bulletsList.CheckCollision(&EnemyList);
glutPostRedisplay();
glutTimerFunc(1000.f/60.f, timer, 0);
}