/// <summary>
/// Updates the collisions.
/// </summary>
private void UpdateCollisions()
{
foreach (Projectile projectile in _projectiles)
{
if (projectile.Active)
{
if (projectile.Hostile)
{
if (projectile.GetCircle().Intersects(_player.GetCircle()))
{
if (Circle.Intersects(projectile.GetCircles(), _player.GetCircles()))
{
projectile.Active = false;
NewLife();
break;
}
}
}
else
{
int pointsEarned = 0;
foreach (Satellite enemy in _enemies)
{
if (projectile.GetCircle().Intersects(enemy.GetCircle()))
{
if (Circle.Intersects(projectile.GetCircles(), enemy.GetCircles()))
{
if (enemy.Accurate)
{
pointsEarned += 1000;
}
else
{
pointsEarned += 200;
}
enemy.Active = false;
projectile.Active = false;
var explosion = new Explosion
{
Active = true,
Position = enemy.Position,
Scale = (float)enemy.Scale,
Texture = _ufoTexture,
Velocity = new Vector2(2, 0)
};
_explosionSound.Play();
_explosions.Add(explosion);
}
}
}
if (pointsEarned != 0)
{
AddPoints(pointsEarned);
}
}
foreach (Asteroid asteroid in _asteroids)
{
if (asteroid.Active)
{
if (asteroid.GetCircle().Intersects(projectile.GetCircle()))
{
asteroid.Active = false;
projectile.Active = false;
if (projectile.Hostile == false)
{
switch (asteroid.Generation)
{
case (1):
AddPoints(20);
break;
case (2):
AddPoints(50);
break;
case (3):
AddPoints(100);
break;
}
}
break;
}
}
}
}
}
foreach (Asteroid asteroid in _asteroids)
{
if (asteroid.GetCircle().Intersects(_player.GetCircle()) &&
Circle.Intersects(asteroid.GetCircles(), _player.GetCircles()))
{
NewLife();
}
}
foreach (Satellite ufo in _enemies)
{
if (ufo.GetCircle().Intersects(_player.GetCircle()))
{
if (Circle.Intersects(ufo.GetCircles(), _player.GetCircles()))
{
NewLife();
ufo.Active = false;
var explosion = new Explosion
{
Active = true,
Position = ufo.Position,
Scale = (float)ufo.Scale,
Texture = _ufoTexture,
Velocity = new Vector2(2, 0)
};
_explosionSound.Play();
_explosions.Add(explosion);
}
}
}
}