void Engine::GameLoop()
{
playerMove();
if(vecBullets.size() > 0)
{
bulletMove();
}
if(vecPU.size() >= 0)
{
powerUPMove();
checkPUContact();
}
checkBulletContact();
}
//Timer interrupt for the game.
void timer_interrupt_handler()
{
if(!paused)
{
secondTimer++;
alienMarchTimer++;
bulletMoveTimer++;
controllerTimer++;
if(getShipAlive())
shipMoveTimer++;
}
tankMoveTimer++;
//Poll the buttons
if(tankMoveTimer >= TANK_SPEED)
{
handleButton(currentButtonState);
handleSwitches(currentSwitchesState);
}
if(controllerTimer >= POLL_CONTROLLER_TIMER)
{
controllerTimer = 0;
//readController();
}
//Advance the aliens and fire bullets
if(alienMarchTimer >= ALIEN_MARCH_SPEED)
{
alienMarch();
if(rand() % BULLET_CHANCE == 0)
{
fireAlienBullet();
}
alienMarchTimer = 0;
}
//Advance the bullets
if(bulletMoveTimer >= BULLET_SPEED)
{
bulletMove();
bulletMoveTimer = 0;
}
//Move the saucer if it is active
if(getShipActive()&&!getPaused())
{
setSound(ufolowpitch_getSound(),ufolowpitch_getNumFrames(), SAUCER_PRIORITY);
if(shipMoveTimer >= SHIP_MOVE_MAX_TIMER)
{
shipMoveTimer = 0;
marchShip();
}
}
//If the saucer is killed flash the score animation
if(getMothershipKilled() && saucerFlash == 0)
{
saucerFlash = 1;
}
//If the saucer is killed flash the score animation
if(saucerFlash > 0)
{
//Paint score
if(secondTimer == HALF_SECOND)
{
setSound(ufohighpitch_getSound(),ufohighpitch_getNumFrames(), SAUCER_DEATH_PRIORITY);
paintShipScore(1);
saucerFlash++;
}
//paint black
if(secondTimer == SECOND_TIMER_MAX)
{
paintShipScore(0);
saucerFlash++;
}
if(saucerFlash >= 7)
{
paintShipScore(0);
saucerFlash = 0;
setMothershipKilled(0);
if(getShipDirection())
{
setShipPos(-SHIP_WIDTH);
setShipDirection(1);
}
else
{
setShipPos(SCREEN_WIDTH + SHIP_WIDTH);
setShipDirection(0);
}
}
}
//Spawn the saucer every X seconds
if(saucerTime == 10 && !paused)
{
saucerTime = 0;
if(!getShipActive() && saucerFlash == 0)
{
setShipActive(1);
setShipAlive(1);
setMothershipKilled(0);
}
}
//Tic the clock one second
if(secondTimer >= SECOND_TIMER_MAX)
{
secondTimer = 0;
gameRunTime++;
saucerTime++;
}
}
