void MainMenu::Display()
{
OpenGL& opengl = OpenGL::GetInstance();
DisplayStars();
// Draw logo and menu items
startOpt.Display(selOption == optStart, bigness, fade);
scoreOpt.Display(selOption == optScore, bigness, fade);
optionsOpt.Display(selOption == optOptions, bigness, fade);
exitOpt.Display(selOption == optExit, bigness, fade);
int title_x = (opengl.GetWidth() - titleImage.GetWidth()) / 2;
int title_y = 100;
titleImage.Draw(title_x, title_y, 0.0, 1.0, fade);
// Draw some hint texts
const int numhints = 7;
const char* hints[] = {
i18n("Use the arrow keys to rotate the ship"),
i18n("Press the up arrow to fire the thruster"),
i18n("Smaller landing pads give you more points"),
i18n("Press P to pause the game"),
i18n("Press escape to self destruct"),
i18n("You can only land safely when then speed bar is green"),
i18n("Collect the spinning rings to unlock the landing pads")
};
if (m_hintTimeout <= 0.0f) {
hintidx = rand() % numhints;
m_hintTimeout = HINT_DISPLAY_TIME;
}
else
m_hintTimeout -= opengl.GetTimeScale();
int x = (opengl.GetWidth() - hintFont.GetStringWidth(hints[hintidx])) / 2;
int y = opengl.GetHeight() - 120;
hintFont.SetColour(0.0f, 1.0f, 0.0f, fade);
hintFont.Print(x, y, hints[hintidx]);
}
void DisplayHandler () // display callback function
{
if (bRotate)
{
fCameraAngle[0] += 1.0 ;
fCameraAngle[2] += 1.0 ;
}
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) ;
glLoadIdentity() ;
SetCamera() ;
if (!bPause)
{
GLfloat fTempX = GLfloat(iLastMouseX) / GLfloat(iWinWidth) ;
GLfloat fTempY = GLfloat(iLastMouseY) / GLfloat(iWinHeight) ;
GLfloat fFixedX = (Player.ptLocation.dX - 8.65) / -17.3 ;
GLfloat fFixedZ = (Player.ptLocation.dZ - 8.65) / -17.3 ;
if (bRightMouseDown)
{
if (!(fFixedX + 0.02 > fTempX && fFixedX - 0.02 < fTempX))
{
if (fFixedX > fTempX)
{
Player.ptLocation.dX += 0.1 ;
if (Player.ptAngle.dZ > -20)
Player.ptAngle.dZ -= 5.0 ;
} else
{
Player.ptLocation.dX -= 0.1 ;
if (Player.ptAngle.dZ < 20)
Player.ptAngle.dZ += 5.0 ;
}
} else
{
if (Player.ptAngle.dZ < 0) Player.ptAngle.dZ += 5.0 ;
else if (Player.ptAngle.dZ > 0) Player.ptAngle.dZ -= 5.0 ;
}
if (!(fFixedZ + 0.1 > fTempY && fFixedZ - 0.02 < fTempY))
{
if (fFixedZ > fTempY)
{
Player.ptLocation.dZ += 0.1 ;
} else
{
Player.ptLocation.dZ -= 0.1 ;
}
}
} else Player.ptAngle.dZ = 0 ;
if (randp() > 0.98) AddPlanet() ;
AddStar() ;
AddStar() ;
AddStar() ;
AddStar() ;
AddStar() ;
AddStar() ;
if (/*!bExplode && */iCount % 15 == 0) SpawnEnemy() ;
if (!bExplode && bAutofire && iCount % 4 == 0) FireShot(&Player, pPlayerShots) ;
iCount ++ ;
}
DisplayStars() ;
DisplayPlanets() ;
DisplayEnemies() ;
DisplayShots(pPlayerShots) ;
DisplayShots(pEnemyShots) ;
if (bExplode && !bPause)
{
if (iCount == 0)
{
printf("Game over\n") ;
MakeExplosion(Player.ptLocation, 1000) ;
}
} else
{
if (iCount % 4)
{
Particle *pNew = new Particle ;
pNew->ptLocation.dX = Player.ptLocation.dX + randp() * 0.5 - 0.25;
pNew->ptLocation.dY = Player.ptLocation.dY + 0.3 * randp() ;
pNew->ptLocation.dZ = Player.ptLocation.dZ - 1.5 + 0.2 * randp() ;
pNew->ptVelocity.dX = 0 ;
pNew->ptVelocity.dY = 0 ;
pNew->ptVelocity.dZ = -0.2 ;
pNew->ptColor.dX = 0.98 ;
pNew->ptColor.dY = 0.59 + 0.3 * randp() - 0.15 ;
pNew->ptColor.dZ = 0.01 ;
pNew->dAlpha = 0.7 ;
pNew->dMass = 1 ;
pNew->dLife = 7 * randp() + 3 ;
pNew->ptAcceleration = 0 ;
Particles.AddBack(pNew) ;
}
Player.Display() ;
}
LinkedListNode<Particle> *pTravParticles = Particles.pHead ;
LinkedListNode<Particle> *pTempParticle ;
while (pTravParticles != 0)
{
pTravParticles->pValue->dLife -- ;
if (pTravParticles->pValue->dLife <= 0)
{
pTempParticle = pTravParticles ;
pTravParticles = pTravParticles->pNext ;
Particles.Remove(pTempParticle, true) ;
} else
{
pTravParticles->pValue->Apply(0.9) ;
DisplayParticle(pTravParticles->pValue) ;
pTravParticles = pTravParticles->pNext ;
}
}
glFinish() ;
glutSwapBuffers() ;
glutPostRedisplay() ;
}
