// Return the group of jewels, including this one, by searching recursively
// A jewel is in the group if it is next to a jewel in this group, and is the same color.
public ArrayList GetJewelGroup(Jewel jewel)
{
ArrayList jewelGroup = new ArrayList();
GetGroup(jewel, jewelGroup);
return(jewelGroup);
}
public Engine()
{
jewels = new Jewel[NUM_ROWS, NUM_COLS];
this.timeSinceLastFrame = 0;
this.score = 0;
this.jewelInBiggestGroup = null;
this.biggestGroupSize = 1;
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
Services.AddService(typeof(SpriteBatch), spriteBatch);
menu = new Menu(this);
menu.addButton("Start!", Color.Yellow, Color.Red, 100, 100, 200, 100, StartGame);
engine = new Engine();
Jewel.LoadJewelImages(Content);
engine.LoadScoreFont(Content);
menu.LoadButtons(Content, graphics);
Components.Add(menu);
}
//private void DrawJewels(SpriteBatch spriteBatch)
//{
// foreach (Jewel jewel in jewels)
// {
// jewel.Draw(spriteBatch);
// }
//}
public void MakeJewels(Game game)
{
for (int i = 0; i < NUM_ROWS; i++)
{
for (int j = 0; j < NUM_COLS; j++)
{
Jewel jewel = new Jewel(game);
jewel.x = i;
jewel.y = j;
jewel.setOffset();
jewels[i, j] = jewel;
game.Components.Add(jewel);
}
}
}
public void OnMouseUp(MouseState mouseState)
{
Jewel clickedJewel = GetClickedJewel(mouseState.X, mouseState.Y);
if (clickedJewel != null)
{
if (clickedJewel.isSpinning)
{
// Change its color, and if it's now in a group, freeze it
clickedJewel.ChangeColor();
ArrayList group = GetJewelGroup(clickedJewel);
if (group.Count > 1)
{
foreach (Jewel jewel in group)
{
jewel.Freeze();
}
}
// If this is now the biggest group, update the score
if (group.Count > biggestGroupSize)
{
biggestGroupSize = group.Count;
score = biggestGroupSize * 1000;
// If there is a previous biggest, make it not solid
if (jewelInBiggestGroup != null)
{
ArrayList previousBiggestGroup = GetJewelGroup(jewelInBiggestGroup);
foreach (Jewel jewel in previousBiggestGroup)
{
jewel.isSolid = false;
jewel.isInBiggestGroup = false;
}
}
// Make the new biggest group solid
foreach (Jewel jewel in group)
{
jewel.isSolid = true;
jewel.isInBiggestGroup = true;
}
jewelInBiggestGroup = clickedJewel;
}
}
}
}
// Second parameter is an array to store the results of the recursive function in.
private void GetGroup(Jewel current, ArrayList jewelGroup)
{
if (!jewelGroup.Contains(current))
{
jewelGroup.Add(current);
}
// If it's already in the group, we've checked this one already
else
{
return;
}
if (current.y > 0)
{
Jewel up = jewels[current.x, current.y - 1];
if (current.color == up.color)
{
GetGroup(up, jewelGroup);
}
}
if (current.y < (Engine.NUM_ROWS - 1))
{
Jewel down = jewels[current.x, current.y + 1];
if (current.color == down.color)
{
GetGroup(down, jewelGroup);
}
}
if (current.x > 0)
{
Jewel left = jewels[current.x - 1, current.y];
if (current.color == left.color)
{
GetGroup(left, jewelGroup);
}
}
if (current.x < (Engine.NUM_COLS - 1))
{
Jewel right = jewels[current.x + 1, current.y];
if (current.color == right.color)
{
GetGroup(right, jewelGroup);
}
}
}