protected List <BlockType> _blockTypeQueue; // Queue is one way
/// <summary>
/// Setups the randomizer
/// </summary>
protected void SetupBlockGenerator(Boolean level_reset = false)
{
// Create empty Queue
if (level_reset)
{
_blockTypeQueue.Clear();
}
else
{
_blockTypeQueue = new List <BlockType>();
}
GenerateNextPermutation();
// First block of first bag is always I J L or T
var firstAllowed = new BlockType[] { BlockType.IBlock, BlockType.JBlock, BlockType.LBlock, BlockType.TBlock };
while (!firstAllowed.Contains(_blockTypeQueue.First()))
{
_blockTypeQueue.Push(_blockTypeQueue.UnShift <BlockType>());
}
// Generate as a block
if (level_reset)
{
this.CurrentBlock.Block.SetBlockType(_blockTypeQueue.UnShift <BlockType>());
}
else
{
this.CurrentBlock = new FallingBlock(this.Game, new Block(_blockTypeQueue.UnShift <BlockType>()), this);
}
this.CurrentBlock.Replace(
(this.Width - this.CurrentBlock.Block.Width) / 2 + Block.GetBaseXPosition(this.CurrentBlock.Block.Type),
this.CurrentBlock.Field.Height - 1,
Block.GetStartRotation(this.CurrentBlock.Block.Type)
);
// Set next block
if (level_reset)
{
this.NextBlock.SetBlockType(_blockTypeQueue.UnShift <BlockType>());
}
else
{
this.NextBlock = new Block(_blockTypeQueue.UnShift <BlockType>());
}
this.NextBlock.Rotation = Block.GetStartRotation(this.NextBlock.Type);
}
/// <summary>
/// Generates the next block
/// </summary>
protected void GenerateNextBlock()
{
var oldType = this.CurrentBlock.Block.Type;
var oldX = this.CurrentBlock.X;
var oldY = this.CurrentBlock.Y;
var oldR = this.CurrentBlock.Block.Rotation;
var oldPoints = this.CurrentBlock.BlockPoints;
var newType = this.NextBlock.Type;
var newR = Block.GetStartRotation(newType);
var nextType = _blockTypeQueue.UnShift <BlockType>();
var newY = this.CurrentBlock.Field.Height - 1;
var newX = (this.Width - this.NextBlock.Width) / 2 + Block.GetBaseXPosition(newType);
this.Timeline.Add(new Event()
{
Apply = () =>
{
// Sets currentblock
this.CurrentBlock.Block.SetBlockType(newType);
this.CurrentBlock.Replace(newX, newY, newR);
// Sets the next block
this.NextBlock.SetBlockType(nextType);
this.NextBlock.Rotation = Block.GetStartRotation(nextType);
if (_blockTypeQueue.Count == 0)
{
GenerateNextPermutation();
}
},
Undo = () =>
{
// Restore next type
_blockTypeQueue.Shift(nextType);
// Retore new block
this.NextBlock.SetBlockType(newType);
this.NextBlock.Rotation = Block.GetStartRotation(newType);
// Restore current block
this.CurrentBlock.Block.SetBlockType(oldType);
this.CurrentBlock.Replace(oldX, oldY, oldR);
this.CurrentBlock.BlockPoints = oldPoints;
},
});
}
/// <summary>
/// Switches holding block with current
/// </summary>
public Boolean SwitchHoldingBlock()
{
if (_holdLocked)
{
return(false);
}
_holdLocked = true;
// Always drop hold blocks from the top
var baseY = this.CurrentBlock.Field.Height - 1;
var oldType = this.CurrentBlock.Block.Type;
var oldR = this.CurrentBlock.Block.Rotation;
var oldPoints = this.CurrentBlock.BlockPoints;
var oldX = (this.Width - this.CurrentBlock.Block.Width) / 2 + Block.GetBaseXPosition(oldType);
// If this is the first too hold
if (this.HoldBlock == null)
{
// We can't replace the current block, so we generate a new one
GenerateNextBlock();
this.Timeline.Add(new Event()
{
Apply = () =>
{
this.HoldBlock = new Block(oldType);
},
Undo = () =>
{
this.HoldBlock = null;
this.CurrentBlock.Replace(oldX, baseY, oldR);
},
});
return(true);
}
// Time to switch a block
var newType = this.HoldBlock.Type;
var newR = Block.GetStartRotation(newType);
var newX = (this.Width - Block.BlockTypes[newType].GetLength(0)) / 2 + Block.GetBaseXPosition(newType);
// Switch the hold block with the current block
this.Timeline.Add(new Event()
{
Apply = () =>
{
this.HoldBlock.SetBlockType(oldType);
this.CurrentBlock.Block.SetBlockType(newType);
this.CurrentBlock.Replace(newX, baseY, newR);
},
Undo = () =>
{
this.HoldBlock.SetBlockType(newType);
this.CurrentBlock.Block.SetBlockType(oldType);
this.CurrentBlock.Replace(oldX, baseY, oldR);
},
});
return(true);
}