/// <summary>
/// Handles OnTouch event for picBoxes imageViews
/// </summary>
/// <param name="v"></param>
/// <param name="e"></param>
/// <returns></returns>
public bool OnTouch(View v, MotionEvent e)
{
if (!SuccessChecker.IsSuccessful(mCurrentLvl, mPicBoxes))
{
int x = (int)v.GetX(); // Get X position of picBox imageView
int y = (int)v.GetY(); // Get Y position of picBox imageView
if (e.Action == MotionEventActions.Down)
{
// Touch down event
mFirstBox = (MyImageView)v; // Get the imageView which is touched
return(true);
}
if (e.Action == MotionEventActions.Up)
{
// Touch up event
int positionX = (int)e.GetX() + x; // Get X position where the touch released relative to the original X position
int positionY = (int)e.GetY() + y; // Get Y position where the touch released relative to the original Y position
int picBox = 0;
for (int i = 0; i < mCurrentLvl; i++)
{
// Get the bounds of each imageView
int xStart = (int)mPicBoxes[i].GetX(); // Get the X position of the imageView top left bound
int xEnd = (int)mPicBoxes[i].GetX() + mPicBoxes[i].Width; // Get the X position of the imageView top right bound
int yStart = (int)mPicBoxes[i].GetY(); // Get the Y position of the imageView bottom left bound
int yEnd = (int)mPicBoxes[i].GetY() + mPicBoxes[i].Height; // Get the Y position of the imageView bottom right bound
// Check if the touch released position is within the imageView bounds
if (positionX > xStart && positionX < xEnd && positionY > yStart && positionY < yEnd)
{
picBox = i; // If true, get the index of the imageView
}
}
if (mFirstBox != mPicBoxes[picBox])
{
// Call ImageSwitcher if a swap is triggered
ImageSwitcher.SwitchImages(mFirstBox, (MyImageView)mPicBoxes[picBox], mImages, mCurrentLvl, mPicBoxes);
}
return(true);
}
}
return(false);
}
/// <summary>
/// Method for switching images between two imageViews
/// </summary>
/// <param name="box1"></param>
/// <param name="box2"></param>
/// <param name="images"></param>
/// <param name="currentLvl"></param>
/// <param name="picBoxes"></param>
public static void SwitchImages(MyImageView box1, MyImageView box2, Bitmap[] images, int currentLvl, ImageView[] picBoxes)
{
int tmp = box2.ImageIndex; // Temporary holder for box2 imageIndex
box2.SetImageBitmap(images[box1.ImageIndex]); // Change the box2 image to box1 image
box2.ImageIndex = box1.ImageIndex; // Change the box2 imageIndex to box1 imageIndex
box1.SetImageBitmap(images[tmp]); // Change the box1 image to box2 image
box1.ImageIndex = tmp; // Change the box1 imageIndex to box2 imageIndex
// Send the result each time when a puzzle piece is switched
OnSwapComplete.Invoke(Application.Context, new EventArgs());
// Check if the puzzle is fixed
if (SuccessChecker.IsSuccessful(currentLvl, picBoxes))
{
// If true, send the result
OnPuzzleComplete.Invoke(Application.Context, new EventArgs());
}
}
/// <summary>
/// Method for breaking down the image into puzzle pieces
/// </summary>
/// <param name="puzzlePanel"></param>
/// <param name="Lvl"></param>
/// <param name="image"></param>
/// <param name="context"></param>
public void Play(Bitmap image, Context context)
{
// Clear the arrays
sImages = null;
sPicBoxes = null;
// Calling the Garbage Collector to clean up the heap
GC.Collect();
sImages = new Bitmap[mCurrentLvl];
sPicBoxes = new ImageView[mCurrentLvl];
int numRow = (int)Math.Sqrt(mCurrentLvl); // # of rows
int numCol = numRow; // # of columns
int unitX = mPuzzlePanel.Width / numRow; // Width of a single puzzle piece
int unitY = mPuzzlePanel.Height / numCol; // Height of a single puzzle piece
int[] indice = new int[mCurrentLvl]; // Helper array for shuffle
mPuzzlePanel.RemoveAllViews(); // Remove all views from puzzlePanel layout
// Draw all the puzzle pieces depending on the current level
for (int i = 0; i < mCurrentLvl; i++)
{
indice[i] = i;
if (sPicBoxes[i] == null)
{
sPicBoxes[i] = new MyImageView(context, null); // Create a new instance of imageView if doesn't exists
sPicBoxes[i].SetOnTouchListener(new MyTouchListener(sImages, mCurrentLvl, sPicBoxes)); // Add Touch Listner for each imageView
}
ViewGroup parent = (ViewGroup)sPicBoxes[i].Parent; // Get the parent view into a ViewGroup
if (parent != null)
{
// Remove from the parent
parent.RemoveView(sPicBoxes[i]);
}
mPuzzlePanel.AddView(sPicBoxes[i]); // Add the imageView to the puzzlePanel layout
// Set the picBox imageView bounds
sPicBoxes[i].LayoutParameters.Width = unitX; // Set the Width of a imageView
sPicBoxes[i].LayoutParameters.Height = unitY; // Set the Height of a imageView
((MyImageView)sPicBoxes[i]).Index = i; // Set the index for the picBox imageView
BitmapMaker.CreateBitmapImage(image, sImages, i, numRow, numCol, unitX, unitY); // Draw the image piece into imageView
// Set location of the picBox imageView
sPicBoxes[i].SetX(unitX * (i % numCol)); // Set X position of imageView
sPicBoxes[i].SetY(unitY * (i / numCol)); // Set Y position of imageView
// Set a boader to the picBox imageView
sPicBoxes[i].SetPaddingRelative(2, 1, 2, 1); // Set padding to image pieces
sPicBoxes[i].SetBackgroundColor(Color.DarkGray); // Set background color for the imageView
}
Shuffle(indice); // Shuffle image pieces and populate picBoxes
// Check if the puzzle is still the same order after shuffling
while (SuccessChecker.IsSuccessful(mCurrentLvl, sPicBoxes))
{
// If true, shuffle again
Shuffle(indice);
}
}