public AntGrid(int numRows, int numCols)
{
_numRows = numRows;
_numCols = numCols;
_maxRow = numRows - 1;
_maxCol = numCols - 1;
_grid = new int[numRows, numCols];
//_grid2 = new List<AntGridSquare>();
_rnd = new Random(DateTime.Now.Millisecond);
_ant = new Ant();
}
public void MoveAntOnGrid(Ant ant)
{
// the ant lives on a grid
// we move the ant by generating a random number between 1 and 4 inclusive (passed as parameter).
// Ant may only move to an adjacent cell - no diagonal moves.
int oldRow = ant.AntRow;
int oldCol = ant.AntCol;
int nextCell = 0;
// find the next cell, working clockwise, 1 = square above, 2 = square to right, etc.
if (ant.AntRow > 0 && ant.AntCol > 0 && ant.AntRow < _maxRow && ant.AntCol < _maxCol)
{
nextCell = _rnd.Next(1, 4 + 1);
}
else if (ant.AntRow == 0 && ant.AntCol == 0)
{
nextCell = _rnd.Next(2, 3 + 1);
}
else if (ant.AntRow == 0 && ant.AntCol > 0 && ant.AntCol < _maxCol)
{
nextCell = _rnd.Next(2, 4 + 1);
}
else if (ant.AntRow == 0 && ant.AntCol == _maxCol)
{
nextCell = _rnd.Next(3, 4 + 1);
}
else if (ant.AntRow > 0 && ant.AntCol == _maxCol && ant.AntRow < _maxRow)
{
// can be 1, 3, or 4, not contiguous.
nextCell = _rnd.Next(2, 4 + 1);
if (nextCell == 2)
{
nextCell = 1;
}
}
else if (ant.AntRow == _maxRow && ant.AntCol == _maxCol)
{
// can be 1, or 4, not contiguous.
nextCell = _rnd.Next(3, 4 + 1);
if (nextCell == 3)
{
nextCell = 1;
}
}
else if (ant.AntRow == _maxRow && ant.AntCol > 0 && ant.AntCol < _maxCol)
{
nextCell = _rnd.Next(1, 3 + 1);
// can be 1, 2, or 4, not contiguous.
if (nextCell == 3)
{
nextCell = 4;
}
}
else if (ant.AntRow == _maxRow && ant.AntCol == 0)
{
nextCell = _rnd.Next(1, 2 + 1);
}
else
{
nextCell = _rnd.Next(1, 3 + 1);
}
switch (nextCell)
{
case 1:
ant.AntRow -= 1;
break;
case 2:
ant.AntCol += 1;
break;
case 3:
ant.AntRow += 1;
break;
case 4:
ant.AntCol -= 1;
break;
default:
break;
}
//Console.WriteLine("Move = {0}, ant now at cell ({1},{2})",nextCell,AntRow, AntCol);
}
