private void check(path pd)
{
switch (pd.dir) //0 none, 1 up, 2 down, 3 left, 4 right
{
case direction.up:
{
if (pd.id - width > 0)
{
if (!p[pd.id - width].selected)
{
addtoPath(direction.up, pd.id - width); //up
}
}
if (pd.id % width != 0)
{
if (!p[pd.id - 1].selected)
{
addtoPath(direction.left, pd.id - 1); //left
}
}
if ((pd.id + 1) % width != 0)
{
if (!p[pd.id + 1].selected)
{
addtoPath(direction.right, pd.id + 1); //right
}
}
break;
}
case direction.down:
{
if (pd.id + width < total)
{
if (!p[pd.id + width].selected)
{
addtoPath(direction.down, pd.id + width); //down
}
}
if (pd.id % width != 0)
{
if (!p[pd.id - 1].selected)
{
addtoPath(direction.left, pd.id - 1); //left
}
}
if ((pd.id + 1) % width != 0)
{
if (!p[pd.id + 1].selected)
{
addtoPath(direction.right, pd.id + 1); //right
}
}
break;
}
case direction.left:
{
if (pd.id - width > 0)
{
if (!p[pd.id - width].selected)
{
addtoPath(direction.up, pd.id - width); //up
}
}
if (pd.id + width < total)
{
if (!p[pd.id + width].selected)
{
addtoPath(direction.down, pd.id + width); //down
}
}
if (pd.id % width != 0)
{
if (!p[pd.id - 1].selected)
{
addtoPath(direction.left, pd.id - 1); //left
}
}
break;
}
case direction.right:
{
if (pd.id - width > 0)
{
if (!p[pd.id - width].selected)
{
addtoPath(direction.up, pd.id - width); //up
}
}
if (pd.id + width < total)
{
if (!p[pd.id + width].selected)
{
addtoPath(direction.down, pd.id + width); //down
}
}
if ((pd.id + 1) % width != 0)
{
if (!p[pd.id + 1].selected)
{
addtoPath(direction.right, pd.id + 1); //right
}
}
break;
}
case direction.none:
{
if (pd.id - width > 0)
{
if (!p[pd.id - width].selected)
{
addtoPath(direction.up, pd.id - width); //up
}
}
if (pd.id + width < total)
{
if (!p[pd.id + width].selected)
{
addtoPath(direction.down, pd.id + width); //down
}
}
if (pd.id % width != 0)
{
if (!p[pd.id - 1].selected)
{
addtoPath(direction.left, pd.id - 1); //left
}
}
if ((pd.id + 1) % width != 0)
{
if (!p[pd.id + 1].selected)
{
addtoPath(direction.right, pd.id + 1); //right
}
}
break;
}
}
}