private static float CountMassAmount(Cell source, Cell target)
{
var r1 = Math.Max(source.Radius, target.Radius);
var r2 = Math.Min(source.Radius, target.Radius);
var distance = Point2D.DistanceBetween(source.Position, target.Position);
//var mass1 = Math.PI * Math.Pow(r1 + (2 * r1 * distance - distance * distance) / (2 * r1 - 2 * distance + 2 * r2) -
// distance, 2) - Math.PI * r1 * r1;
//var x = (2 * r1 * distance - distance * distance) / (2 * r1 - 2 * distance + 2 * r2);
//var mass2 = Math.PI * r2 * r2 - Math.PI * Math.Pow(r2 - (2 * r1 * distance - distance * distance) / (2 * r1 - 2 * distance + 2 * r2), 2);
var y = (r1 * r1 - r2 * r2 - distance * distance + 2 * distance * r2) / (2 * distance);
//var x = distance - r1 - r2 + y;
//var mass1 = Math.PI * (Math.Pow(r1 + x, 2) - Math.Pow(r1, 2));
if (y > r2)
{
return(target.Mass);
}
var mass2 = Math.PI * (Math.Pow(r2, 2) - Math.Pow(r2 - y, 2));
return((float)mass2);
}
private static Point2D SetNewCellMovementVector()
{
Point2D clickPosition = GameWindow.GameFieldCursorPosition;
var distance = Point2D.DistanceBetween(player.Position, clickPosition);
float lambda = (float)(distance / Math.Pow(distance, 2));
var xOnCircle = (player.Position.X + lambda * clickPosition.X) / (1 + lambda);
var yOnCircle = (player.Position.Y + lambda * clickPosition.Y) / (1 + lambda);
var xSpeed = player.Position.X - xOnCircle;
var ySpeed = player.Position.Y - yOnCircle;
return(new Point2D(-xSpeed, -ySpeed));
}
public void Move()
{
Point2D clickPosition = GameWindow.GameFieldCursorPosition;
var distance = Point2D.DistanceBetween(source.Position, clickPosition);
var xDifference = clickPosition.X - source.Position.X;
var yDifference = clickPosition.Y - source.Position.Y;
var ratio = Math.Min(xDifference, yDifference) / Math.Max(xDifference, yDifference);
float lambda = (float)(distance / Math.Pow(distance, 2));
var xOnCircle = (source.Position.X + lambda * clickPosition.X) / (1 + lambda);
var yOnCircle = (source.Position.Y + lambda * clickPosition.Y) / (1 + lambda);
var xSpeed = source.Position.X - xOnCircle;
var ySpeed = source.Position.Y - yOnCircle;
source.MovementVector.X += xSpeed;
source.MovementVector.Y += ySpeed;
}
public static void PushCell()
{
var cellMass = player.Mass / 10;
player.Mass -= cellMass;
var cellRadius = (float)Math.Sqrt(cellMass / Math.PI);
var cellMovementVector = SetNewCellMovementVector();
var distanceMultiplier = (player.Radius + cellRadius) / Point2D.DistanceBetween(player.Position, cellMovementVector + player.Position);
var position = player.Position + cellMovementVector * distanceMultiplier;
cells.Add(
CellFactory.Create(
position,
cellMass,
cellMovementVector));
player.MovementVector -= cellMovementVector;
}
private static bool DoCellsIntersect(Cell source, Cell target)
{
return(Point2D.DistanceBetween(source.Position, target.Position) < source.Radius + target.Radius);
}