void waitFor(uint8_t button)
{
debounceButtons();
while (!justReleased(button))
{
debounceButtons();
}
}
// This is invoked in response to a timer interrupt.
// This code is used for everything that needs to
// use precise timing. It is split into many function
// for readability.
void timer_interrupt_handler() {
// Increment the following counters:
fit_timer_count++;
debounce_timer_count++;
alien_explosion_count++;
checkGameOver(); // Check to see if the aliens have reached the bottom.
alienBulletsCreate(); // Create a new alien bullet, if possible.
saucerUpdate(); // Move the saucer.
debounceButtons(); // Debounce the push buttons, and then move the tank and/or fire.
checkExplosion(); // Handle alien explosions.
updateAllBullets(); // Update both the tank and alien bullets.
updateAlienBlock(); // Update the alien block position.
updateSaucerFlashing(); // Update if the saucer is hit and should be flashing.
updateTankFlashing(); // Update if the tank is hit and should be flashing.
resetDebouncer(); // Reset the debouncer timer if no buttons are pressed.
}
