public void Serve(Racquet racquet, float serviceSpeed)
{
var xVarSpeed = (((float)_random.NextDouble() - .5f) * 2f) * (20f / 100f);
xVarSpeed += 1f;
var yVarSpeed = (((float)_random.NextDouble() - .5f) * 2f) * (20f / 100f);
yVarSpeed += 1f;
var xSpeed = serviceSpeed * xVarSpeed;
var ySpeed = serviceSpeed * yVarSpeed;
if (racquet.Location.X > 400)
{
xSpeed *= -1f;
}
if (racquet.Speed.Y == 0f)
{
ySpeed *= (_random.NextDouble() > 0.5) ? 1f : -1f;
}
else if (racquet.Speed.Y < 0f)
{
ySpeed *= -1;
}
Speed = new PointF(xSpeed, ySpeed);
}
private bool PlayerCollision(Racquet racquet, ref PointF nextLocation, ref PointF nextSpeed)
{
var xRect = racquet.Location.X - (racquet.Size.Width / 2f);
var yRect = racquet.Location.Y - (racquet.Size.Height / 2f);
var rectangle = new RectangleF(new PointF(xRect, yRect), racquet.Size);
return(PlayerHorizontalCollision(ref nextLocation, ref nextSpeed, rectangle) ||
PlayerVerticalCollision(ref nextLocation, ref nextSpeed, rectangle));
}
private void Spin(Racquet racquet, ref PointF nextSpeed)
{
var xVarSpeed = (((float)_random.NextDouble() - .5f) * 2f) * (10f / 100f);
var yVarSpeed = (float)_random.NextDouble() * (20f / 100f);
if (racquet.Speed.Y < 0)
{
yVarSpeed *= -1;
}
var xSpeed = nextSpeed.X * (1 + xVarSpeed);
var ySpeed = nextSpeed.Y * (1 + yVarSpeed);
nextSpeed = new PointF(xSpeed, ySpeed);
}
public void PrepareToServe(Racquet racquet)
{
float x;
if (racquet.Location.X > 400)
{
x = racquet.Location.X - Radius - (racquet.Size.Width / 2f);
}
else
{
x = racquet.Location.X + Radius + (racquet.Size.Width / 2f);
}
var y = racquet.Location.Y;
Speed = new PointF();
Location = new PointF(x, y);
}
public void Update(Racquet left, Racquet right, float deltaTime)
{
Accelerate(out var nextLocation, out var nextSpeed, deltaTime);
TopDownCollision(ref nextLocation, ref nextSpeed);
if (Speed.X < 0)
{
if (PlayerCollision(left, ref nextLocation, ref nextSpeed))
{
Spin(left, ref nextSpeed);
}
}
else
{
if (PlayerCollision(right, ref nextLocation, ref nextSpeed))
{
Spin(right, ref nextSpeed);
}
}
Location = nextLocation;
Speed = nextSpeed;
}
