public Form1()
{
InitializeComponent();
this.ClientSize = new Size(1400, 750);
width = this.ClientSize.Width;
height = this.ClientSize.Height;
masterChannel = new ANT();
masterChannel.UcChannelType = 0;
ThreadStart antRefMaster = new ThreadStart(masterChannel.startANT);
Thread antThreadMaster = new Thread(antRefMaster);
antThreadMaster.Start();
//ground = new Rectangle2D(new Point2D(600, 425), 1100, 50);
topLine = new Line2D(new Point2D(0, 0), new Point2D(width, 0));
groundLine = new Line2D(new Point2D(0, height), new Point2D(width, height));
/*
* Obstacle1B = new Rectangle2D(new Point2D(1150, 400-25), 20, 50);
* Obstacle1B.Velocity = new Point2D(-10, 0);
*/
Obstacle1 = new Barrier(width + 10, 30);
Obstacle2 = new Barrier(width + width / 3 + 10, 30);
Obstacle3 = new Barrier(width + width * 2 / 3 + 10, 30);
player = new Sphere2D(new Point2D(200, 350), 25);
updatePlayerLifes(playerLives);
}
public void PerformCollision(Sphere2D otherBall)
{
Point2D difference = this.center - otherBall.center;
float distance = difference.Magnitude;
if (distance == 0)
{
return; // what were you thinking?
}
// minimum translation distance mtd will be used to seperate the balls
Point2D mtd = difference * (this.radius + otherBall.Radius - distance) / distance * 1.1f;
// get the inverse of masses
float myMassInverse = 1 / mass;
float otherMassInverse = 1 / otherBall.Mass;
// push the balls apart the minimum translation distance based on their relative mass
Point2D center = mtd * (myMassInverse / (myMassInverse + otherMassInverse));
this.center.X += center.X;
this.center.Y += center.Y;
Point2D centerotherBall = mtd * (otherMassInverse / (myMassInverse + otherMassInverse));
otherBall.center.X -= centerotherBall.X;
otherBall.center.Y -= centerotherBall.Y;
// now normalize the mtd to get a unit vector in the mtd direction
mtd /= mtd.Magnitude;;
// impact speed
Point2D v = this.velocity - otherBall.Velocity;
float v_dot_mtd = v * mtd;
if (float.IsNaN(v_dot_mtd))
{
return; // vn was Not A Number
}
// if the balls are intersecting but already moving apart - do nothing
if (v_dot_mtd > 0)
{
return;
}
// work out the collision effect
float i = -(1.0f + elasticity) * v_dot_mtd / (myMassInverse + otherMassInverse);
Point2D impulse = mtd * i;
// change the ball's velocities
this.velocity += impulse * myMassInverse;
otherBall.Velocity -= impulse * otherMassInverse;
}
public int playerHitBarrier(Sphere2D player)
{
if (player.Center.X >= center.X - width / 2 && player.Center.X <= center.X + width / 2 &&
player.Center.Y <= center.Y + height / 2 && player.Center.Y >= center.Y - height)
{
return(1);
}
return(0);
}
public int playerHitBarrier(Sphere2D player)
{
if ((player.Center.X + player.Radius >= obstacleA.Center.X - obstacleA.Width / 2 && player.Center.X - player.Radius <= obstacleA.Center.X + obstacleA.Width / 2 &&
player.Center.Y - player.Radius <= obstacleA.Center.Y + obstacleA.Height / 2) || (
player.Center.X + player.Radius >= obstacleB.Center.X - obstacleB.Width / 2 && player.Center.X - player.Radius <= obstacleB.Center.X + obstacleB.Width / 2 &&
player.Center.Y + player.Radius >= obstacleB.Center.Y - obstacleB.Height / 2))
{
return(1);
}
return(0);
}
public Line2D(Point2D p1, Point2D p2)
{
this.p1 = p1;
this.p2 = p2;
b[0] = new Sphere2D(new Point2D(), 0.01);
b[1] = new Sphere2D(new Point2D(), 0.01);
b[0].Center = p1;
b[1].Center = p2;
b[0].Mass = float.MaxValue;
b[1].Mass = float.MaxValue;
}
public Point2D Normal2Ball(Sphere2D ball)
{
Point2D v = p2 - p1;
Point2D ballToLine = ball.Center - p1;
Point2D normal = v.Normal;
normal.Normalize();
if (normal * ballToLine < 0)
{
normal *= -1;
}
return(normal);
}
/// <summary>
/// return the center of the ball if it is reflected
/// </summary>
/// <param name="ball"></param>
/// <returns></returns>
public bool BallBounce(Sphere2D ball)
{
// determine the normal vector ball the reflection line towards the ball
Point2D normal = Normal2Ball(ball);
// this next line is just to be able to see the normal line
Line2D normalLine = new Line2D(P1, P2);
normalLine.P2 = P1 + Normal2Ball(ball) * ball.Radius;
// we will reflect from the center of the ball so we "move" the line towards the ball by the normal a distance of radius
Line2D aLineTemp = new Line2D(P1 + normal * ball.Radius, P2 + normal * ball.Radius);
// where will the ball be in one step?
Point2D ballNextStep = ball.Center + ball.Velocity;
// calculate the path of the ball
Line2D ballPath = new Line2D(ball.Center, ballNextStep);
// find the point of intersection between the ball and the reflection line
Point2D intersectionPt = aLineTemp.LineIntersectionPoint(ballPath);
float dot = normal * ball.Velocity;
if (b[0].IsColliding(ball))
{
b[0].PerformCollision(ball);
return(true);
}
else if (b[1].IsColliding(ball))
{
b[1].PerformCollision(ball);
return(true);
}// if the intersection point is on the reflection line and the ball is moving towards the reflection line
// if we don't travel as far as the intersection point, no reflection and moving towards the reflection line
else if (ball.Velocity.Magnitude < (intersectionPt - ball.Center).Magnitude && normal * ball.Velocity < 0)
{
return(false);
}
else if (aLineTemp.Contains(intersectionPt) && normal * ball.Velocity < 0)
{
Line2D reflectionLine = new Line2D(ball.Center + ball.Velocity, intersectionPt);
Point2D velDirection = -1 * reflectionLine.Reflection(Normal2Ball(ball));
velDirection.Normalize();
ball.Velocity = velDirection * ball.Velocity.Magnitude;
ball.Center = intersectionPt - reflectionLine.Reflection(Normal2Ball(ball)) * ball.Elasticity;
return(true);
}
// else there is no reflection
else
{
return(false);
}
}
// Ball to Ball collision code
public bool IsColliding(Sphere2D otherBall)
{
// measure the distance between the centers of the balls
Point2D difference = this.center - otherBall.center;
float distance = difference.Magnitude;
// if distance is less than sum of radii, we collide
if (distance < this.radius + otherBall.Radius)
{
return(true);
}
else
{
return(false);
}
}