/// <summary>
/// Creates a meteor entity with a random position, direction, linear and rotation velocity.
/// </summary>
/// <param name="type">Type of the meteor.</param>
/// <param name="inject">Whether the meteor should be injected into the entity manager.</param>
/// <returns>Th new meteor entity.</returns>
public Meteor CreateMeteor(MeteorType type, bool inject)
{
Vector2 randomPosition = new Vector2(_random.Next(0, _gameSize.ScreenWidth), _random.Next(0, _gameSize.ScreenHeight));
Vector2 randomDirection = VectorHelper.AngleToVector((float)(_random.NextDouble() * Math.PI * 2));
return(CreateMeteor(type, randomPosition, randomDirection, inject));
}
/// <summary>
/// Splits a meteor entity into 2 smaller meteors entities.
/// </summary>
/// <param name="meteor">The meteor that has to be split.</param>
/// <param name="inject">Whether the smaller meteors should be injected into the entity manager.</param>
public List <Meteor> SplitMeteor(Meteor meteor, bool inject)
{
if (meteor is TinyMeteor)
{
throw new InvalidOperationException("Can't split a meteor of type TinyMeteor");
}
List <Meteor> newMeteors = new List <Meteor>();
float currentDirection = VectorHelper.VectorToAngle(meteor.Direction);
Vector2 newDirection = Vector2.Zero;
for (int i = 0; i < 2; i++)
{
if (i == 0)
{
newDirection = VectorHelper.AngleToVector(currentDirection + (float)(Math.PI / 2));
}
else
{
newDirection = VectorHelper.AngleToVector(currentDirection - (float)(Math.PI / 2));
}
if (meteor is SmallMeteor)
{
newMeteors.Add(CreateMeteor(MeteorType.TINY, meteor.Position, newDirection, inject));
}
if (meteor is MediumMeteor)
{
newMeteors.Add(CreateMeteor(MeteorType.SMALL, meteor.Position, newDirection, inject));
}
if (meteor is BigMeteor)
{
newMeteors.Add(CreateMeteor(MeteorType.MEDIUM, meteor.Position, newDirection, inject));
}
}
return(newMeteors);
}
