public void performMove(Move move)
{
// perform move stored in Move object
performMove(move.face, move.twist);
}
public void updateHighlights(Move move)
{
// update any changes in rotated piece highlights
bool[,,] oldHighlights = (bool[,,]) pieceHighlighted.Clone();
for(int i = 0; i < 3; i++)
for(int j = 0; j < 3; j++)
switch(move.twist) {
case CubeMove.Clockwise:
switch(move.face) {
case FaceID.Front:
pieceHighlighted[2 - j, i, 0] = oldHighlights[i, j, 0];
break;
case FaceID.Back:
pieceHighlighted[j, 2 - i, 2] = oldHighlights[i, j, 2];
break;
case FaceID.Left:
pieceHighlighted[0, 2 - j, i] = oldHighlights[0, i, j];
break;
case FaceID.Right:
pieceHighlighted[2, j, 2 - i] = oldHighlights[2, i, j];
break;
case FaceID.Top:
pieceHighlighted[j, 0, 2 - i] = oldHighlights[i, 0, j];
break;
case FaceID.Bottom:
pieceHighlighted[2 - j, 2, i] = oldHighlights[i, 2, j];
break;
}
break;
case CubeMove.Double:
switch(move.face) {
case FaceID.Front:
pieceHighlighted[2 - i, 2 - j, 0] = oldHighlights[i, j, 0];
break;
case FaceID.Back:
pieceHighlighted[2 - i, 2 - j, 2] = oldHighlights[i, j, 2];
break;
case FaceID.Left:
pieceHighlighted[0, 2 - i, 2 - j] = oldHighlights[0, i, j];
break;
case FaceID.Right:
pieceHighlighted[2, 2 - i, 2 - j] = oldHighlights[2, i, j];
break;
case FaceID.Top:
pieceHighlighted[2 - i, 0, 2 - j] = oldHighlights[i, 0, j];
break;
case FaceID.Bottom:
pieceHighlighted[2 - i, 2, 2 - j] = oldHighlights[i, 2, j];
break;
}
break;
case CubeMove.AntiClockwise:
switch(move.face) {
case FaceID.Front:
pieceHighlighted[j, 2 - i, 0] = oldHighlights[i, j, 0];
break;
case FaceID.Back:
pieceHighlighted[2 - j, i, 2] = oldHighlights[i, j, 2];
break;
case FaceID.Left:
pieceHighlighted[0, j, 2 - i] = oldHighlights[0, i, j];
break;
case FaceID.Right:
pieceHighlighted[2, 2 - j, i] = oldHighlights[2, i, j];
break;
case FaceID.Top:
pieceHighlighted[2 - j, 0, i] = oldHighlights[i, 0, j];
break;
case FaceID.Bottom:
pieceHighlighted[j, 2, 2 - i] = oldHighlights[i, 2, j];
break;
}
break;
}
}
protected void update()
{
// called on every step in idle application time
float correction = 1.0F; // initial time correction value
if(timer.IsRunning) {
timer.Stop();
correction = (float) timer.ElapsedTicks / 3000F; // get the difference in time between this step and the last and create compensation for it
}
viewMatrix = Matrix.CreateLookAt(new Vector3(0, 0, -7 + zoom), new Vector3(0, 0, 0), new Vector3(0, -1, 0)); // update matrices for new zoom and new viewport if changed
projectionMatrix = Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, GraphicsDevice.Viewport.AspectRatio, 1.0f, 300.0f);
if(!paused) { // if not paused update any rotations on the cube
if(moveQueue.Count > 0 && delaySoFar == 0 && faceAngle <= 0.0F) { // no move currently being performed so start a new one
Move move = moveQueue.Dequeue(); // get the next move
delaySoFar = (int) (performDelay / correction); // set up the delay for this move
if(animateFaces) { // if animate the faces then set up a slow face rotation
verticesChanged[(int) move.face] = true; // invalidate the relevant faces for refreshing
for(int i = 0; i < 6; i++)
if(areAdjacent(move.face, (FaceID) i))
verticesChanged[i] = true;
rotatingBackwards = move.twist == CubeMove.AntiClockwise; // update the current rotation
rotatingFace = move.face;
faceAngle = rotatePerStep;
if(move.twist == CubeMove.Double) rotatingTo = MathHelper.Pi;
else rotatingTo = MathHelper.PiOver2;
lastMove = move;
}
else { // faces not animated so perform rotation instantly
verticesChanged[(int) move.face] = true;
for(int i = 0; i < 6; i++)
if(areAdjacent(move.face, (FaceID) i))
verticesChanged[i] = true;
cube.performMove(move);
updateHighlights(move);
lastMove = move;
if(moveQueue.Count == 0) // update when sequence has finished
onSequenceFinish();
}
}
if(delaySoFar > 0) delaySoFar--; // update delay between rotations
if(faceAngle > 0.0F) { // face currently being rotated so continue it
verticesChanged[(int) lastMove.face] = true; // invalidate faces
for(int i = 0; i < 6; i++)
if(areAdjacent(lastMove.face, (FaceID) i))
verticesChanged[i] = true;
faceAngle += rotatePerStep * correction; // update rotation with correction for time differences
}
if(faceAngle >= rotatingTo) { // if rotation is finished, end it
verticesChanged[(int) lastMove.face] = true; // invalidate faces
for(int i = 0; i < 6; i++)
if(areAdjacent(lastMove.face, (FaceID) i))
verticesChanged[i] = true;
faceAngle = 0.0F; // reset face angle, perform latest move on actual cube stored, and update changes in pieces highlighted
cube.performMove(lastMove);
updateHighlights(lastMove);
if(moveQueue.Count == 0) // update when sequence has finished
onSequenceFinish();
}
}
KeyboardState kb = Keyboard.GetState(); // get current user input data
MouseState ms = Mouse.GetState();
Point vms = this.PointToClient(new Point(ms.X, ms.Y));
if(ms.LeftButton == ButtonState.Pressed && inBounds(vms) && inBounds(prevMs)) { // if mouse is within control bounds and was in control bounds last step with the mouse button held
angleX += (vms.Y - prevMs.Y) * 0.01F / (float) Height * 365F; // update rotations of entire cube
angleY += (prevMs.X - vms.X) * 0.01F / (float) Width * 805F * (angleX > MathHelper.PiOver2 || angleX < -MathHelper.PiOver2 ? -1 : 1);
}
angleX = angleX % (float) (2 * Math.PI); // ensure angleX doesn't exceed -2*pi or 2*pi when not necessary (for above rotation logic)
prevKb = kb; // input finished with so update input from last step
prevMs = vms;
if(!timer.IsRunning) // restart step timer
timer.Restart();
}
public void performMove(Move move)
{
// queue up move
moveQueue.Enqueue(move);
}
