/// <summary>
/// Create a new level.
/// </summary>
/// <param name="width">Width of the level in number of blocks.</param>
/// <param name="height">Height of the level in number of blocks.</param>
public GamePlayManager(int width, int height)
{
//Set up the starting matrix and set it to all zeroes.
levelGrid = new int[width, height];
Array.Clear(levelGrid, 0, levelGrid.Length);
//Generate the first block, and set up rotation subsystem.
blockFactory = new BlockFactory();
wallKickData = new WallKickData();
activeBlock = blockFactory.GetNewBlock();
activeBlockPosition = spawnPoint;
//Generate the next 3 blocks.
nextBlocks = new Queue<Block>();
for (int i = 0; i < 3; i++)
{
nextBlocks.Enqueue(blockFactory.GetNewBlock());
}
}
/// <summary>
/// Puts a new block in the level.
/// </summary>
/// <returns>Returns a value indicating if switching to the new block was succesful.</returns>
/// <remarks>TODO: Separate the check for the possibility of adding a block from the actual adding.</remarks>
public void ActivateNextBlock()
{
activeBlockPosition = spawnPoint;
//Get next block from the queue.
activeBlock = nextBlocks.Dequeue();
nextBlocks.Enqueue(blockFactory.GetNewBlock());
}
/// <summary>
/// Checks if a block can be placed at the specified position.
/// </summary>
/// <param name="block">The block that needs to be checked.</param>
/// <param name="position">Relative position on the LevelGrid.</param>
/// <returns></returns>
private bool BlockPositionIsValid(Block block, Point position)
{
//Check if block would be out of bounds of the level.
if (position.X + block.Offset.X < 0 ||
position.X + block.Offset.X + block.Width > levelGrid.GetUpperBound(0) + 1 ||
position.Y + block.Offset.Y < 0 ||
position.Y + block.Offset.Y + block.Height > levelGrid.GetUpperBound(1) + 1
)
return false;
//Check if block would overlap any existing blocks in the level.
for (int x = 0; x < block.Width; x++)
{
for (int y = 0; y < block.Height; y++)
{
if (levelGrid[x + position.X + block.Offset.X, y + position.Y + block.Offset.Y] > 0)
{
if (block.Shape[x, y] > 0)
return false;
}
}
}
//The block is valid if it has passed all previous validations.
return true;
}