public void CheckBulletCollisions()
{
List <Bullet> bulletsToRemove = new List <Bullet>();
List <Invader> invadersToRemove = new List <Invader>();
List <SuperUFO> UFOtoRemove = new List <SuperUFO>();
List <CaveBlock> CaveBlocksToRemove = new List <CaveBlock>();
foreach (var bullet in Player.Bullets)
{
if (bullet.IsOffScreen(GameWindow))
{
bulletsToRemove.Add(bullet);
}
if (Invaders.Count != 0)
{
foreach (Invader invader in Invaders)
{
if (bullet.CollidedWith(invader))
{
bulletsToRemove.Add(bullet);
invadersToRemove.Add(invader);
// invader.IsDead = true;
int addScore = 100;
Player.Score = Player.Score + addScore;
bullet.CollisionSound.Play();
}
}
}
foreach (var UFO in SuperUFOs)
{
if (UFO.IsOffScreenWidth(GameWindow))
{
UFOtoRemove.Add(UFO);
}
if (bullet.CollidedWith(UFO))
{
bulletsToRemove.Add(bullet);
UFOtoRemove.Add(UFO);
UFO.IsDead = true;
Player.Score = Player.Score + 1000;
bullet.CollisionSound.Play();
}
}
foreach (var cBlock in CaveBlocks)
{
if (cBlock.CollidedWith(bullet))
{
bulletsToRemove.Add(bullet);
CaveBlocksToRemove.Add(cBlock);
Player.Score -= 500;
cBlock.CaveCollide.Play();
}
}
}
foreach (var bullet in bulletsToRemove)
{
Player.Bullets.Remove(bullet);
}
foreach (var invader in invadersToRemove)
{
Invaders.Remove(invader);
}
foreach (var UFO in UFOtoRemove)
{
SuperUFOs.Remove(UFO);
}
foreach (var cBlock in CaveBlocksToRemove)
{
CaveBlocks.Remove(cBlock);
}
CaveBlocksToRemove.Clear();
invadersToRemove.Clear();
UFOtoRemove.Clear();
CaveBlocksToRemove.Clear();
}