public virtual void Tick(GameInput input)
{
particles.Tick();
if (door != null)
{
door.Tick();
}
items.Tick(input);
enemyBullets.Tick(players);
playerBullets.Tick(enemies);
enemies.Tick(input);
if (player != null)
{
player.Tick(input);
}
backgroundParticles.Tick();
foreach (Thing enemy in enemyAddList)
{
enemies.AddThing(enemy);
}
enemyAddList.Clear();
foreach (Particle particle in particleAddList)
{
particles.AddParticle(particle);
}
particleAddList.Clear();
if (player != null)
{
MoveCamera(player.Focus);
}
players.SweepRemovedThings();
enemies.SweepRemovedThings();
playerBullets.SweepRemovedBullets();
enemyBullets.SweepRemovedBullets();
items.SweepRemovedThings();
particles.SweepRemovedParticles();
backgroundParticles.SweepRemovedParticles();
if (quakeRadius > 0)
{
double angle = 2 * Math.PI * random.NextDouble();
quakeVector = quakeRadius * new Vector(Math.Cos(angle), Math.Sin(angle));
quakeRadius -= 0.25;
}
if (flash > 0)
{
flash--;
}
numTicks++;
if (cleared)
{
if (clearTimer < 16)
{
clearTimer++;
}
}
if (input.Exit && !gameover)
{
gameover = true;
gameoverTimer = 240;
}
if (player != null)
{
if (player.Removed)
{
gameover = true;
}
}
if (gameover)
{
if (gameoverTimer == 240)
{
StopMusic();
}
if (gameoverTimer < 256)
{
gameoverTimer++;
}
}
}