public Block Clone(RollTypes roll)
{
Block block = new Block();
block.Id = this.Id;
block.X = this.X;
block.Y = this.Y;
int x, y;
if (roll == RollTypes.Left)
{
for (y = 0; y < 4; y++)
{
for (x = 0; x < 4; x++)
{
block.Data[y, 3 - x] = this.Data[x, y];
}
}
}
else
{
for (y = 0; y < 4; y++)
{
for (x = 0; x < 4; x++)
{
block.Data[3 - y, x] = this.Data[x, y];
}
}
}
return block;
}
public virtual bool HitTest(Block block, RollTypes roll)
{
var move = block.Clone(roll);
return HitTest(move.Data, move.X, move.Y);
}
public virtual bool HitTest(Block block, int dx, int dy)
{
return HitTest(block.Data, block.X + dx, block.Y + dy);
}
public virtual void SetBlock(Block block)
{
int w = this.W;
int h = this.H;
for (int x = 0; x < 4; x++)
{
for (int y = 0; y < 4; y++)
{
int dat = block.Data[x,y];
if (dat == 0)
continue;
int mx = block.X + x;
if (mx < 0 || w <= mx)
{
continue;
}
int my = block.Y + y;
if (my < 0 || h <= my)
{
continue;
}
this.Data[mx,my] = block.Id;
}
}
}
public bool GameLoop()
{
// --------------------------------------------------------
if (field.IsGameOver())
{
return false;
}
// --------------------------------------------------------
if (block == null)
{
block = new Block(rand.Next(Block.Blocks.Count - 1) + 1, field);
}
// --------------------------------------------------------
if (MoveLeft)
{
if (!field.HitTest(block, -1, 0))
{
block.X--;
}
}
if (MoveRight)
{
if (!field.HitTest(block, +1, 0))
{
block.X++;
}
}
if (RollLeft)
{
if (!field.HitTest(block, RollTypes.Left))
{
block.Roll(RollTypes.Left);
}
}
if (RollRight)
{
if (!field.HitTest(block, RollTypes.Right))
{
block.Roll(RollTypes.Right);
}
}
// --------------------------------------------------------
if (!field.HitTest(block, 0, +1))
{
block.Y++;
}
else
{
field.SetBlock(block);
block = null;
}
// --------------------------------------------------------
field.ClearLine();
// --------------------------------------------------------
MoveLeft = false;
MoveRight = false;
MoveDown = false;
RollLeft = false;
RollRight = false;
return true;
}
public TetrisViewModel()
{
rand = new Random();
field = new Field();
block = null;
}