public void CreateDialog(Body body)
{
Reset();
if (body as Ball != null)
panel.AddField("Radius", ((Ball)body).radius);
panel.AddField("Mass", body.Mass);
if (body as Box != null)
{
panel.AddLabel("HalfSize", "HalfSize");
panel.AddXYZ(((Box)body).HalfSize, "hlf");
}
panel.AddLabel("Position", "Position");
panel.AddXYZ(body.Position, "pos");
panel.AddLabel("Velocity", "Velocity");
panel.AddXYZ(body.Velocity, "vel");
panel.AddLabel("Acceleration", "Acceleration");
panel.AddXYZ(body.LastFrameAcceleration, "acc");
panel.AddOkButton();
panel.AddCancelButton();
panel.AddApplyButton();
panel.Show = true;
currentBody = body;
previousBody = currentBody;
BodyAdded = true;
((Drawable)body).ShowPanel = true;
type = Type.Body;
}
/// <summary>
/// override affect
/// update body position and velocity
/// </summary>
/// <param name="body"></param>
/// <param name="duration"></param>
protected override void Affect(Body body)
{
if (!body.HasFiniteMass)
return;
//Vector3 velocity=Vector3.Multiply(gravity,body.Mass);
//velocity=Vector3.Multiply(velocity,duration);
//body.AddVelocity(velocity);
//TODO delete above lines @Adnan
body.AddForce(Vector3.Multiply(gravity,body.Mass));
}
/** Creates a new spring with the given parameters. */
public Spring(Body first, Body other, float springConstant, float restLength, float C,
Vector3 ConnectionPoint = new Vector3(), Vector3 otherConnectionPoint = new Vector3())
: base(/** The particle at the first end of the spring. */
first,
/** The particle at the other end of the spring. */
other)
{
this.otherConnectionPoint = otherConnectionPoint;
this.ConnectionPoint = ConnectionPoint;
this.springConstant = springConstant;
this.restLength = restLength;
this.C = C;
}
public void CrateSpring(Body one, Body two)
{
AddEffect(new Spring(one, two, 5f, 6f, 0.9f));
}
protected abstract void Affect(Body other);
public void RemoveBody(Body body)
{
bodies.Remove(body);
}
public void AddBody(Body body)
{
bodies.Add(body);
}
public Constraint(Body firstBody, Body SecondBody)
{
bodys = new Body[2];
this.bodys[0] = firstBody;
this.bodys[1] = SecondBody;
}
public void SelectedAndMoving(MouseState mouse, KeyboardState keyboard,
Vector2 cursorPosition,Vector2 previousCursorPosition, float totalSecond)
{
var cursorDelta = (cursorPosition - previousCursorPosition) * totalSecond;
var cameraDelta = (camera.cameraPosition - previousCameraPosition) * totalSecond;
if (!bodySel)
{
ray = camera.GetMouseRay(cursorPosition, GraphicsDevice.Viewport);
if (!bodyMoving) bdy = basicLab.CheckIntersect(ray);
if (bdy != null)
{
currentBody = bdy;
if (mouse.LeftButton == ButtonState.Pressed)
bodyMoving = true;
else
{
bodyMoving = false;
bdy = null;
}
if (bodyMoving)
{
Vector3 tocentre = camera.cameraPosition - bdy.Position;
float dest = tocentre.Length();
cursorDelta *= dest / 10f;
cameraDelta *= dest / 10f;
((Drawable)bdy).Selected = true;
if (keyboard.IsKeyDown(Keys.LeftControl))
{
bodySel = true;
prevBody = bdy;
((IMoveable)bdy).Translate(-camera.cameraDirection, cameraDelta.Y + cursorDelta.Y + cameraDelta.X + cursorDelta.X);
}
else
{
Vector3 moveUnit = Vector3.Cross(camera.cameraUp, camera.cameraDirection);
moveUnit.Normalize();
((IMoveable)bdy).Translate(-moveUnit, cameraDelta.X + cursorDelta.X);
((IMoveable)bdy).Translate(-camera.cameraUp, cameraDelta.Y + cursorDelta.Y);
}
}
}
}
else
{
Vector3 tocentre = camera.cameraPosition - prevBody.Position;
float dest = tocentre.Length();
cursorDelta *= dest / 10f;
cameraDelta *= dest / 10f;
((IMoveable)prevBody).Translate(-camera.cameraDirection, cameraDelta.Y + cursorDelta.Y);
((Drawable)prevBody).Selected = true;
}
if (keyboard.IsKeyUp(Keys.LeftControl)) bodySel = false;
}
void Crate(Vector2 cursorPosition, KeyboardState keyboard, float time)
{
if (keyboard.IsKeyDown(Keys.B))
bClicked = true;
if (keyboard.IsKeyUp(Keys.B) && bClicked)
{
Vector3 point = new Vector3(cursorPosition, 0.9f);
point = GraphicsDevice.Viewport.Unproject(point, camera.projection, camera.view, Matrix.Identity);
Body body = basicLab.CreateBall(point);
panel.CreateDialog(body);
currentBody = body;
bClicked = false;
}
if (keyboard.IsKeyDown(Keys.C))
cClicked = true;
if (keyboard.IsKeyUp(Keys.C) && cClicked)
{
Vector3 point = new Vector3(cursorPosition, 0.9f);
point = GraphicsDevice.Viewport.Unproject(point, camera.projection, camera.view, Matrix.Identity);
Crate crate = basicLab.CreateCrate(point);
panel.CreateDialog(crate);
currentBody = crate;
cClicked = false;
}
if (keyboard.IsKeyDown(Keys.P))
pClicked = true;
if (keyboard.IsKeyUp(Keys.P) && pClicked)
{
Body body = basicLab.CreateBall(camera.cameraPosition);
panel.CreateDialog(body);
currentBody = body;
body.AddVelocity(ray.Direction * 25);
pClicked = false;
}
if (keyboard.IsKeyDown(Keys.G))
{
if (panel.BodyAdded)
{
gClicked = true;
WaitForOther = true;
}
}
if (keyboard.IsKeyUp(Keys.G) && gClicked)
{
panel.SpringActivated();
gClicked = false;
}
if (keyboard.IsKeyDown(Keys.I))
iClicked = true;
if (keyboard.IsKeyUp(Keys.G) && iClicked)
{
panel.CreateSpringPanel();
iClicked = false;
}
}
private void PanelShow(MouseState mouse)
{
if (mouse.RightButton == ButtonState.Pressed)
{
if (currentBody != null)
{
if (currentBody.InverseMass != 0)
{
if (((Lab)Game).WaitForOther)
{
((Lab)Game).basicLab.CrateSpring(previousBody, currentBody);
((Lab)Game).WaitForOther = false;
spPanel.Close();
}
else
{
if (previousBody != null)
((Drawable)previousBody).ShowPanel = false;
Reset();
CreateDialog(currentBody);
((Drawable)currentBody).ShowPanel = true;
previousBody = currentBody;
}
}
}
}
}
private void CheckPanelClosed()
{
if (previousBody != null && !panel.Show && BodyAdded)
{
ApplyChanges();
((Drawable)previousBody).ShowPanel = false;
BodyAdded = false;
previousBody = null;
}
if (type == Type.Spring)
ApplyChanges();
}
/// <summary>
/// Allows the game component to update itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
public override void Update(GameTime gameTime)
{
MouseState mouse = Mouse.GetState();
currentBody = ((Lab)Game).currentBody;
PanelShow(mouse);
if (panel.Show && !panel.Applied)
ApplyChanges();
UpdateFeildPanel();
CheckPanelClosed();
SpringPanelPanel();
base.Update(gameTime);
}