public void HandlePositionChanged(object sender, EventArgs args)
{
LostSoul entity = (LostSoul)((BodyBehavior)sender).Entity;
var pos = entity.BodyBehavior.Position;
if (!entity.Game.World.PlayField.Contains((int)pos.X, (int)pos.Y))
{
if (wasInPlayfield)
{
entity.Game.Audio.PlaySound(entity.Game.ContentLoader.SkullEscapeSound);
entity.Game.World.AddLives(-1);
entity.Expired = true;
}
}
else
{
wasInPlayfield = true;
}
}
private Vector2 PickVelocity(LostSoulGame game, LostSoul soul)
{
float speed = soul.Klass.Speed;
if (random.NextDouble() < ChanceOfFasterSpeed)
{
speed *= 2.0f;
}
var playField = game.World.PlayField;
var position = soul.BodyBehavior.Position;
Vector2 diff = new Vector2(playField.Center.X, playField.Center.Y) - position;
diff = Vector2.Normalize(diff);
float angle = MathHelper.ToRadians(22.5f - (45.0f * (float)random.NextDouble()));
Vector2 rotated = new Vector2()
{
X = (float)(diff.X * Math.Cos(angle) - diff.Y * Math.Sin(angle)),
Y = (float)(diff.Y * Math.Cos(angle) + diff.X * Math.Sin(angle))
};
return(rotated * speed);
}
public LostSoulPositionObserver(LostSoul entity)
{
entity.BodyBehavior.PositionChanged += HandlePositionChanged;
}