protected override void Update(GameTime gameTime)
{
base.Update(gameTime);
Assets.updateTimer.Restart();
#region Process Curtain Simulation
//update point masses
for (i = 0; i < PointMasses.Count; i++)
{
Functions_Simulate.Constrain(PointMasses[i]);
Functions_Simulate.ApplyPhysics(PointMasses[i]);
Functions_Simulate.RelaxPM(PointMasses[i]);
}
#endregion
#region Pass input into curtain
//get this frame of user input
InputData.Update();
//place cursor rec and draw game cursor
MouseState currentMouseState = Mouse.GetState();
cursorRec.X = (int)currentMouseState.X - (int)(cursorRec.Width / 2);
cursorRec.Y = (int)currentMouseState.Y - (int)(cursorRec.Height / 2);
if (InputData.IsLeftMouseBtnPress())
{ //grab one PM colliding with cursor rec
for (i = 0; i < PointMasses.Count; i++)
{ //do not allow input to be passed to pinned point masses
if (PointMasses[i].pinned == false)
{
if (cursorRec.Contains(PointMasses[i].X, PointMasses[i].Y))
{ //grab PM, bail
grabbedPM = PointMasses[i];
grabbedPM.pinned = true;
i = PointMasses.Count;
}
}
}
}
if (currentMouseState.LeftButton == ButtonState.Pressed)
{ //handle dragging state (left mouse button down)
if (grabbedPM != null)
{ //drag the point until released
grabbedPM.X = currentMouseState.X;
grabbedPM.Y = currentMouseState.Y;
}
}
else
{ //release grabbed pm
if (grabbedPM != null)
{
grabbedPM.pinned = false;
grabbedPM = null;
}
}
#endregion
//update how the lines connect to their pointMasses
for (i = 0; i < Lines.Count; i++)
{
Functions_Simulate.UpdateLine(Lines[i]);
}
Assets.updateTimer.Stop();
updateTimeRec.Width = (int)(Assets.updateTimer.ElapsedTicks / 1000 * 8);
}