/*
* Returns all of the Bubbles which are in the immediate neighborhoud of a given location, including the bubble
* in that particular location
* Returns null if there is no bubble in the current location
* @param {Vector2} location. Location of the matrix that we want to obtain the neighbours of
*/
public ArrayList neighbours(Vector2 location)
{
int row = (int)location.x;
int column = (int)location.y;
ArrayList _neigbours = new ArrayList();
if (row < 0 || row > this._rows - 1 || column < 0 || column > this._columns - 1)
{
throw new System.ArgumentException("Looking for neighbors of an invalid location");
}
if (this._bubbleMatrix[row, column] != null)
{
_neigbours.AddNotNull(this._bubbleMatrix[row, column]);
// Left and right neighbours
if (column > 0)
{
_neigbours.AddNotNull(this._bubbleMatrix[row, column - 1]);
}
if (column < this._columns - 1)
{
_neigbours.AddNotNull(this._bubbleMatrix[row, column + 1]);
}
// higher and lower neighbours
bool isRowEven = row % 2 == 0;
if ((isBaselineAlignedLeft && isRowEven) || (!isBaselineAlignedLeft && !isRowEven))
{
if (row > 0)
{
if (column > 0)
{
_neigbours.AddNotNull(this._bubbleMatrix[row - 1, column - 1]);
}
_neigbours.AddNotNull(this._bubbleMatrix[row - 1, column]);
}
if (row < this._rows - 1)
{
if (column > 0)
{
_neigbours.AddNotNull(this._bubbleMatrix[row + 1, column - 1]);
}
_neigbours.AddNotNull(this._bubbleMatrix[row + 1, column]);
}
}
else
{
if (row > 0)
{
_neigbours.AddNotNull(this._bubbleMatrix[row - 1, column]);
if (column < this._columns - 1)
{
_neigbours.AddNotNull(this._bubbleMatrix[row - 1, column + 1]);
}
}
if (row < this._rows - 1)
{
_neigbours.AddNotNull(this._bubbleMatrix[row + 1, column]);
if (column < this._columns - 1)
{
_neigbours.AddNotNull(this._bubbleMatrix[row + 1, column + 1]);
}
}
}
return(_neigbours);
}
return(null);
}
