private InMemoryBlockCollection ReadBlocks(EndianReader reader, XmlNode node, InMemoryBlockCollection parent, int parentBlockIndex)
{
var result = new InMemoryBlockCollection(this, reader, node, parent, parentBlockIndex);
var lastBlock = AllBlocks.LastOrDefault();
var nextAddress = (lastBlock?.VirtualAddress + lastBlock?.AllocatedSize) ?? 0;
var nextSize = PageSize;
while (nextSize < result.VirtualSize)
{
nextSize += PageSize;
}
result.Allocate(nextAddress, nextSize);
AllBlocks.Add(result);
var blockAddress = parent == null
? SourceItem.MetaPointer.Address
: result.BlockRef.Pointer.Address;
for (int i = 0; i < result.EntryCount; i++)
{
var indexAddress = blockAddress + result.EntrySize * i;
foreach (var childNode in node.SelectNodes("tagblock").OfType <XmlNode>())
{
reader.Seek(indexAddress + childNode.GetIntAttribute("offset").Value, SeekOrigin.Begin);
ReadBlocks(reader, childNode, result, i);
}
}
return(result);
}
/// <summary>
/// Aggregate current index with next block
/// </summary>
/// <param name="nextBlock">nextBlock arg should be validated before</param>
/// <returns></returns>
public BlocksIndex Add(Block nextBlock)
{
if (IsEmpty)
{
throw new InvalidOperationException("Index in empty");
}
var allBlocks = AllBlocks.Add(nextBlock);
var blocksByHash = BlocksByHash.Add(nextBlock.Signature, nextBlock);
return(new BlocksIndex(allBlocks, BlocksByHash));
}
public override void Rotate(TetrisGrid tetris)
{
int[][] grid = tetris.GetGrid();
int maxRight = grid[0].Length - 1, maxTop = grid.Length - 1;
if (BottomedOut(tetris))
{
return;
}
UnDraw(tetris);
switch (DegreesRotated)
{
case 0:
if (PivotBlock.X + 1 > maxTop)
{
PivotBlock.X -= 3;
}
else if (PivotBlock.X + 2 > maxTop)
{
PivotBlock.X -= 2;
}
else if (PivotBlock.X + 3 > maxTop)
{
PivotBlock.X -= 1;
}
AllBlocks.Clear();
AllBlocks.Add(PivotBlock);
AllBlocks.Add(new Block(PivotBlock.X + 1, PivotBlock.Y));
AllBlocks.Add(new Block(PivotBlock.X + 2, PivotBlock.Y));
AllBlocks.Add(new Block(PivotBlock.X + 3, PivotBlock.Y));
LowestPoint = PivotBlock.X + 3;
this.DegreesRotated += 90;
break;
case 90:
if (PivotBlock.Y - 1 < 0)
{
PivotBlock.Y += 3;
}
else if (PivotBlock.Y - 2 < 0)
{
PivotBlock.Y += 2;
}
else if (PivotBlock.Y - 3 < 0)
{
PivotBlock.Y += 1;
}
AllBlocks.Clear();
AllBlocks.Add(PivotBlock);
AllBlocks.Add(new Block(PivotBlock.X, PivotBlock.Y - 1));
AllBlocks.Add(new Block(PivotBlock.X, PivotBlock.Y - 2));
AllBlocks.Add(new Block(PivotBlock.X, PivotBlock.Y - 3));
LowestPoint = PivotBlock.X;
this.DegreesRotated += 90;
break;
case 180:
if (PivotBlock.X - 1 < 0)
{
PivotBlock.X += 3;
}
else if (PivotBlock.X - 2 < 0)
{
PivotBlock.X += 2;
}
else if (PivotBlock.X - 3 < 0)
{
PivotBlock.X += 1;
}
AllBlocks.Clear();
AllBlocks.Add(PivotBlock);
AllBlocks.Add(new Block(PivotBlock.X - 1, PivotBlock.Y));
AllBlocks.Add(new Block(PivotBlock.X - 2, PivotBlock.Y));
AllBlocks.Add(new Block(PivotBlock.X - 3, PivotBlock.Y));
LowestPoint = PivotBlock.X;
this.DegreesRotated += 90;
break;
case 270:
if (PivotBlock.Y + 1 > maxRight)
{
PivotBlock.Y -= 3;
}
else if (PivotBlock.Y + 2 > maxRight)
{
PivotBlock.Y -= 2;
}
else if (PivotBlock.Y + 3 > maxRight)
{
PivotBlock.Y -= 1;
}
AllBlocks.Clear();
AllBlocks.Add(PivotBlock);
AllBlocks.Add(new Block(PivotBlock.X, PivotBlock.Y + 1));
AllBlocks.Add(new Block(PivotBlock.X, PivotBlock.Y + 2));
AllBlocks.Add(new Block(PivotBlock.X, PivotBlock.Y + 3));
LowestPoint = PivotBlock.X;
this.DegreesRotated = 0;
break;
}
Draw(tetris);
}