public static LerpFunc <Vector2> Circle() => (start, end, p) => new Vector2(AxMath.CosNorm(p), AxMath.SinNorm(p));
public static LerpFunc <Vector2> Circle(float scale) => (start, end, p) => new Vector2(AxMath.CosNorm(p) * scale, AxMath.SinNorm(p) * scale);
public override void UpdateFrame()
{
var keyboardState = WindowContext.Current.Window.KeyboardState;
if (keyboardState.IsKeyDown(Key.R))
{
Reset();
}
if (StartMovement)
{
var speed = Speed;
if (keyboardState[Key.ControlLeft])
{
speed = speed * 0.1f;
}
var delta = (float)Application.Current.UpdateCounter.Elapsed.TotalMilliseconds / 1000.0f;
var movement = direction * speed * delta;
var updatedPosition = gfx.RelativeTranslation + new Vector3(movement.X, movement.Y, 0);
var collision = false;
var ballRadius = gfx.RelativeScale.X / 2;
if (updatedPosition.X + ballRadius > WorldSize.X / 2 ||
updatedPosition.X - ballRadius < -WorldSize.X / 2)
{
Reset();
return;
}
if (updatedPosition.Y + ballRadius > WorldSize.Y / 2 ||
updatedPosition.Y - ballRadius < -WorldSize.Y / 2)
{
direction.Y = -direction.Y;
collision = true;
}
bool firstPlayCollision = FirstPlayer.CollidesWithBall(updatedPosition.Xy, ballRadius);
bool secondPlayerCollision = SecondPlayer.CollidesWithBall(updatedPosition.Xy, ballRadius);
if (firstPlayCollision || secondPlayerCollision)
{
if ((firstPlayCollision && direction.X < 0) || (secondPlayerCollision && direction.X > 0))
{
var player = firstPlayCollision ? FirstPlayer : SecondPlayer;
direction.X = -direction.X;
collision = true;
var normalizedBounds = player.Bounds;
normalizedBounds.Center = Vector2.Zero;
var translatedDiff = player.Bounds.Center.Y;
var translatedBallPos = gfx.RelativeTranslation.Y - translatedDiff;
var scaledPaddleCollisionPos = translatedBallPos / player.Bounds.HalfSize.Y; // 0..1
scaledPaddleCollisionPos *= 0.5f;
var posY = AxMath.SinNorm(scaledPaddleCollisionPos / 4f);
var posX = AxMath.CosNorm(scaledPaddleCollisionPos / 4f);
var pos = new Vector2(posX, posY).Normalized();
var newDirX = AxMath.SetSign(pos.X, direction.X);
//var newDirY = AxMath.SetSign(pos.Y, direction.Y);
direction = new Vector2(newDirX, pos.Y);
}
}
if (collision)
{
AudioManager.Default.PlayAsync("Audio/collision.rack.json");
}
else
{
gfx.RelativeTranslation = updatedPosition;
}
}
}