public void TestEmptySprite()
{
var s = new Sprite();
Assert.That(s.image == null);
s.image = null;
Assert.That(s.Id == 1);
s = new Sprite();
Assert.That(!s.IsValid());
Assert.That(s.Id == 2);
}
public TheInput(Form parent)
{
this.DoubleBuffered = true;
Parent = parent;
Dock = DockStyle.Fill;
try {
imageCross = new Bitmap("../../cross.png");
images = new List<Bitmap>();
images.Add(new Bitmap("../../spark.png"));
images.Add(new Bitmap("../../katya-head.png"));
images.Add(new Bitmap("../../nastya-head.png"));
} catch (Exception e) {
Console.WriteLine("cannot load images:" + e.Message);
Environment.Exit(1);
}
t0 = DateTime.Now;
sprites = new List<Sprite>();
curimage = 0;
prototype = new Sprite(images[curimage], 0.0F);
random = new Random();
KeyUp += new KeyEventHandler(this.OnKeyUp);
MouseDown += new MouseEventHandler(this.OnMouseDown);
MouseUp += new MouseEventHandler(this.OnMouseUp);
MouseMove += new MouseEventHandler(this.OnMouseMove);
timer = new Timer(new Container());
timer.Interval = 50;
timer.Enabled = true;
timer.Tick += new EventHandler(this.OnTick);
Paint += new PaintEventHandler(this.OnPaint);
}
void OnMouseUp(object sender, MouseEventArgs a)
{
if (a.Button == MouseButtons.Left && !mouseDownLocation.IsEmpty) {
U.show("OnMouseUp");
var s = new Sprite(images[curimage], 0.0F);
s.Position = new Vec(mouseDownLocation);
Vec spd = new Vec(a.Location).Subtract(s.Position).Scale(0.4);
var speedlen = spd.Length;
if (speedlen > U.maxspeed) {
spd = spd.Scale(U.maxspeed/speedlen);
} else if (speedlen < U.minspeed) {
// make random speed
double alpha = Math.PI * 2.0 * random.NextDouble();
speedlen = (random.NextDouble() * (U.maxspeed-U.minspeed) + U.minspeed);
spd = Vec.Dir(alpha).Scale(speedlen);
}
s.Speed = spd;
s.Rotation = (float)(random.NextDouble() - 0.5) * 10.0F;
sprites.Add(s);
mouseDownLocation = new Point();
mouseLastLocation = mouseDownLocation;
} else if (a.Button == MouseButtons.Right) {
curimage += 1;
if (curimage >= images.Count) {
curimage = 0;
}
prototype = new Sprite(images[curimage], 0.0F);
}
}
void OnKeyUp(object sender, KeyEventArgs a)
{
U.show("OnKeyUp");
if (a.KeyCode == Keys.Escape) {
U.show("Ended");
Environment.Exit(0);
} else if (a.KeyCode == Keys.Left) {
curimage -= 1;
if (curimage < 0) {
curimage = images.Count - 1;
}
prototype = new Sprite(images[curimage], 0.0F);
} else if (a.KeyCode == Keys.Right) {
curimage += 1;
if (curimage >= images.Count) {
curimage = 0;
}
prototype = new Sprite(images[curimage], 0.0F);
} else if (a.KeyCode == Keys.Back) {
sprites.Clear();
}
}
private List<Rib> applyCollision(Collision first, Rib rib, double dt)
{
double time = first.GetTime(rib);
Collision second = rib.Collision;
Rib self = first.SelfRib;
// remove ribs from both collisions
first.Remove(rib);
if (self.Sprite.image == rib.Sprite.image) {
// the collision occurs b/w the same type of objects
// remove all ribs corresponding to this sprite
ribs.RemoveAll(r => r.Sprite == rib.Sprite);
ribs.RemoveAll(r => r.Sprite == self.Sprite);
// scan through all other ribs in the collections and remove
first.RemoveAll();
second.RemoveAll();
rib.SetEndTime(time);
self.SetEndTime(time);
// move sprites
rib.Sprite.Update(rib);
self.Sprite.Update(self);
// create a new rib
Sprite sprite = new Sprite(self.Sprite.image, self.Sprite, rib.Sprite);
List<Rib> moreribs = new List<Rib>();
sprite.MakeMove(time, dt, moreribs);
return moreribs;
} else {
return null;
}
}
public Sprite(Bitmap theimg, Sprite one, Sprite two)
: this(theimg, one.mass + two.mass)
{
// now calculate the position, speed and rotation
double invertmass = 1.0/mass;
Position = one.Position.Scale(one.Mass).Add(two.Position.Scale(two.Mass)).Scale(invertmass);
Speed = one.Speed.Scale(one.Mass).Add(two.Speed.Scale(two.mass)).Scale(invertmass);
alpha = (Math.IEEERemainder(one.alpha,Math.PI*2) * one.AngularMass + Math.IEEERemainder(two.alpha,Math.PI*2) * two.AngularMass) / AngularMass;
// sum up all moments of rotation
double totalRotationMomentum =
one.Mass * one.Position.Subtract(Position).Normal(one.Speed).Length +
two.Mass * two.Position.Subtract(Position).Normal(two.Speed).Length +
one.AngularMass * one.omega + two.AngularMass * two.omega;
omega = totalRotationMomentum / AngularMass;
}