//this is the function that allows piece selection 0 = white 1 = black
public void onPieceClick(int lastSelectedColor)
{
piecemovScript.resetSquares();
Piece capturedPiece = null;
//if there wasn't a selected gameobject
if (piecemovScript.selectedPiece == null)
{
piecemovScript.selectedPiece = transform.gameObject;
groundRend.enabled = true;
//stop execution in this case
}
// set lastest piece render to false (unselect) only of there is one selected and is not the same as clicked
else
{
piecemovScript.selectedPiece.transform.GetChild(0).GetComponent <Renderer>().enabled = false;
piecemovScript.selectedPiece = transform.gameObject;
groundRend.enabled = true;
}
piecemovScript.disableTexts();
////////////////////////////////////////////////////
//the square selection mechanics is implemented here
////////////////////////////////////////////////////
/////////////
// PAWN
////////////
if (pieceTp == PieceType.pawn)
{
// loop accross the squares
foreach (GameObject sq in piecemovScript.squares)
{
float distToSquare = (transform.position - sq.transform.position).magnitude;
float angle = 0;
//check movement of the pawn in function of the color
if (color == 0)
{
angle = Vector3.Angle(transform.forward, -(sq.transform.position - piecemovScript.selectedPiece.transform.position));
}
else if (color == 1)
{
angle = Vector3.Angle(transform.forward, (sq.transform.position - piecemovScript.selectedPiece.transform.position));
}
//movement is posible if can move forward and is not blocked
// or if there is a opponent piece at the diagonal square
capturedPiece = GetOccupiedDiffCol(sq);
if (((Mathf.Abs(distToSquare - distance) < th && angle < 0.5f) && (capturedPiece == null && IsOccupied_sameCol(sq) == false) ||
(Mathf.Abs(distToSquare - distance * Mathf.Sqrt(2)) < th && (Mathf.Abs(angle - 45) < 0.5f)) &&
capturedPiece != null
) && IsBlocked(sq) == false && captured == false)
{
//the square is activated and can be selected
//set the captured piece
sq.GetComponent <ChessSquare>().active(capturedPiece);
}
}
}
/////////////
// knight
////////////
else if (pieceTp == PieceType.knight)
{
// loop accross the squares
foreach (GameObject sq in piecemovScript.squares)
{
float distToSquare = (transform.position - sq.transform.position).magnitude;
//Debug.Log(distToSquare);
capturedPiece = GetOccupiedDiffCol(sq);
if ((Mathf.Abs(distToSquare - distance) < th) && IsOccupied_sameCol(sq) == false && IsBlocked(sq) == false && captured == false)
{
sq.GetComponent <ChessSquare>().active(capturedPiece);
}
}
}
/////////////
// bishop
////////////
else if (pieceTp == PieceType.bishop)
{
foreach (GameObject sq in piecemovScript.squares)
{
//check if a piece is on the square
float angle = Vector3.Angle(transform.forward, -(sq.transform.position - piecemovScript.selectedPiece.transform.position));
capturedPiece = GetOccupiedDiffCol(sq);
if ((Mathf.Abs(angle - 45) < 0.5f ||
Mathf.Abs(angle - 135) < 0.5f ||
Mathf.Abs(angle - 225) < 0.5f ||
Mathf.Abs(angle - 315) < 0.5f) && IsOccupied_sameCol(sq) == false && IsBlocked(sq) == false && captured == false)
{
sq.GetComponent <ChessSquare>().active(capturedPiece);
}
}
}
/////////////
// rock
////////////
else if (pieceTp == PieceType.rock)
{
foreach (GameObject sq in piecemovScript.squares)
{
float angle = Vector3.Angle(transform.forward, (sq.transform.position - piecemovScript.selectedPiece.transform.position));
capturedPiece = GetOccupiedDiffCol(sq);
if ((angle < 0.5f || Mathf.Abs(angle - 90) < 0.5f || Mathf.Abs(angle + 90) < 0.5f || Mathf.Abs(angle - 180) < 0.5f) && IsOccupied_sameCol(sq) == false && IsBlocked(sq) == false && captured == false)
{
sq.GetComponent <ChessSquare>().active(capturedPiece);
}
}
}
////////////
// QUEEN
///////////
else if (pieceTp == PieceType.queen)
{
foreach (GameObject sq in piecemovScript.squares)
{
float angle = Vector3.Angle(transform.forward, (sq.transform.position - piecemovScript.selectedPiece.transform.position));
capturedPiece = GetOccupiedDiffCol(sq);
if ((Mathf.Abs(angle - 45) < 0.5f ||
Mathf.Abs(angle - 135) < 0.5f ||
Mathf.Abs(angle - 225) < 0.5f ||
Mathf.Abs(angle - 315) < 0.5f ||
angle < 0.5f || Mathf.Abs(angle - 90) < 0.5f || Mathf.Abs(angle + 90) < 0.5f || Mathf.Abs(angle - 180) < 0.5f) && IsOccupied_sameCol(sq) == false && IsBlocked(sq) == false && captured == false)
{
sq.GetComponent <ChessSquare>().active(capturedPiece);
}
}
}
////////////
// king
///////////
else if (pieceTp == PieceType.king)
{
foreach (GameObject sq in piecemovScript.squares)
{
capturedPiece = GetOccupiedDiffCol(sq);
float distToSquare = (transform.position - sq.transform.position).magnitude;
if ((Mathf.Abs(distToSquare - distance) < th || Mathf.Abs(distToSquare - distance * Mathf.Sqrt(2)) < th) && IsOccupied_sameCol(sq) == false &&
IsBlocked(sq) == false &&
piecemovScript.CheckCheck(color, sq.transform) == false && captured == false)
{
sq.GetComponent <ChessSquare>().active(capturedPiece);
}
}
}
}