public bool CheckPossibleSwapBlocks()
{
for (int y = (mapModel.LengthY - 1); y >= 0; --y)
{
for (int x = 0; x < mapModel.LengthX; ++x)
{
if (!mapModel.CheckShowBlock(y, x))
{
continue;
}
if (mapModel.CheckEmptyBlock(y, x))
{
continue;
}
if (mapModel.CheckFixedBlock(y, x))
{
continue;
}
int directionIndex = (x % 2);
for (int j = 0; j < mapModel.DirectionLengthY; ++j)
{
for (int k = 0; k < mapModel.DirectionLengthX; ++k)
{
Vector2Int swapDirection = mapModel.GetDirection(directionIndex, j, k);
int swapY = y + swapDirection.y;
int swapX = x + swapDirection.x;
if (mapModel.CheckRangeOver(swapY, swapX))
{
continue;
}
if (mapModel.CheckEmptyBlock(swapY, swapX))
{
continue;
}
if (mapModel.CheckFixedBlock(swapY, swapX))
{
continue;
}
mapModel.SwapBlocks(mapModel.GetBlock(y, x), mapModel.GetBlock(swapY, swapX));
if (mapModel.GetBlock(y, x).BlockType > BlockType.Red)
{
mapModel.SwapBlocks(mapModel.GetBlock(y, x), mapModel.GetBlock(swapY, swapX));
continue;
}
for (int n = 0; n < mapModel.DirectionLengthY; ++n)
{
Queue <Block> block = new Queue <Block>();
block.Enqueue(mapModel.GetBlock(y, x));
for (int m = 0; m < mapModel.DirectionLengthX; ++m)
{
Vector2Int direction = mapModel.GetDirection(directionIndex, n, m);
int nextY = y + direction.y;
int nextX = x + direction.x;
DFSMatchingBlock(nextY, nextX, n, m, block);
}
if (block.Count >= MATCH_COUNT_MIN)
{
mapModel.SwapBlocks(mapModel.GetBlock(y, x), mapModel.GetBlock(swapY, swapX));
return(true);
}
}
mapModel.SwapBlocks(mapModel.GetBlock(y, x), mapModel.GetBlock(swapY, swapX));
}
}
}
}
return(false);
}
