public void SetWallBit(int x, int y, CartesianGridDirectionBit directionBit)
{
if (new CartesianGridCoordinates {
x = (short)x, y = (short)y
}.OnGrid(RowCount, ColCount))
{
Walls[y * WallRowStride + (x >> 1)] |= (byte)((byte)directionBit << (4 * (x & 1)));
}
}
public bool TestWallBit(int x, int y, CartesianGridDirectionBit directionBit)
{
if (!(new CartesianGridCoordinates {
x = (short)x, y = (short)y
}.OnGrid(RowCount, ColCount)))
{
return(false);
}
return(((Walls[y * WallRowStride + (x >> 1)] >> (4 * (x & 1))) & (byte)directionBit) == (byte)directionBit);
}
public bool TestWallBit(int cellIndex, CartesianGridDirectionBit directionBit)
{
var cellPosition = CartesianGridOnCubeUtility.CellFaceCoordinates(cellIndex, RowCount);
var faceIndex = CartesianGridOnCubeUtility.CellFaceIndex(cellIndex, RowCount);
var rowStride = (RowCount + 1) / 2;
var faceStride = RowCount * rowStride;
var faceGridWallsOffset = faceIndex * faceStride;
var x = cellPosition.x;
var y = cellPosition.y;
var gridWallsIndex = faceGridWallsOffset + ((y * ((RowCount + 1) / 2)) + (x / 2));
Assert.IsTrue(cellPosition.OnGrid(RowCount, RowCount));
return(((Walls[gridWallsIndex] >> (4 * (x & 1))) & (byte)directionBit) == (byte)directionBit);
}