void Update()
{
if (selectedPiece != null)
{
RectTransform rect = selectedPiece.rect.parent.GetComponent <RectTransform>();
Vector2 nPos = Vector2.zero;
RectTransformUtility.ScreenPointToLocalPointInRectangle(rect, Input.mousePosition, canvas.worldCamera, out nPos);
//selectedPiece.rect.anchoredPosition = nPos;
selectBox.position = selectedPiece.rect.position;
//becaus the anchor preset of the piece is top Left ,so need to minus (board width /2) 因為珠子的錨點在左上角所以要減去盤面的一半
float disX = nPos.x + rect.sizeDelta.x / 2 - startPos.x;
float disY = nPos.y - rect.sizeDelta.y / 2 - startPos.y;
Vector2 dir = ((Vector2)Input.mousePosition - mouseStart);
Vector2 nDir = dir.normalized;
Vector2 aDir = new Vector2(Mathf.Abs(dir.x), Mathf.Abs(dir.y));
if (dir.magnitude > 32 && cDir == 0)
{
if (aDir.x > aDir.y)
{
cDir = 1;
}
else if (aDir.y > aDir.x)
{
cDir = 2;
}
}
// else if(dir.magnitude < 32)
// cDir = 0;
//avoid piece cross over the board 避免拉超過盤面 每個位置上的珠子都只能拉到最旁邊為止
switch (selectedPiece.index.x)
{
//
// 45678 ←index
//4 XXXXX
//5 XXXXX
//6 XXXXX ←board
//7 XXXXX
//8 XXXXX
//most left
case 4:
{
//because the size of piece is 64x64
if (disX > 64 * 4)
{
disX = 64 * 4;
}
else if (disX < 0)
{
disX = 0;
}
break;
}
//
case 5:
{
if (disX > 64 * 3)
{
disX = 64 * 3;
}
else if (disX < -64 * 1)
{
disX = -64 * 1;
}
break;
}
// middle
case 6:
{
if (disX > 64 * 2)
{
disX = 64 * 2;
}
else if (disX < -64 * 2)
{
disX = -64 * 2;
}
break;
}
case 7:
{
if (disX > 64 * 1)
{
disX = 64 * 1;
}
else if (disX < -64 * 3)
{
disX = -64 * 3;
}
break;
}
//most right
case 8:
{
if (disX > 0)
{
disX = 0;
}
else if (disX < -64 * 4)
{
disX = -64 * 4;
}
break;
}
}
switch (selectedPiece.index.y)
{
case 4:
{
if (disY > 0)
{
disY = 0;
}
else if (disY < -64 * 4)
{
disY = -64 * 4;
}
break;
}
case 5:
{
if (disY > 64 * 1)
{
disY = 64 * 1;
}
else if (disY < -64 * 3)
{
disY = -64 * 3;
}
break;
}
case 6:
{
if (disY > 64 * 2)
{
disY = 64 * 2;
}
else if (disY < -64 * 2)
{
disY = -64 * 2;
}
break;
}
case 7:
{
if (disY > 64 * 3)
{
disY = 64 * 3;
}
else if (disY < -64 * 1)
{
disY = -64 * 1;
}
break;
}
case 8:
{
if (disY > 64 * 4)
{
disY = 64 * 4;
}
else if (disY < 0)
{
disY = 0;
}
break;
}
}
if (disX > 0)
{
disX = disX + 32;
}
else if (disX < 0)
{
disX = disX - 32;
}
if (disY > 0)
{
disY = disY + 32;
}
else if (disY < 0)
{
disY = disY - 32;
}
if (Mathf.Abs((int)((disX) / 63)) > 0 || Mathf.Abs((int)((disY) / 63)) > 0)
{
StateManager.Instance.state = StateManager.State.turning;
}
verticalSelectLine.gameObject.SetActive(false);
horizontalSelectLine.gameObject.SetActive(false);
switch (cDir)
{
case 1:
{
horizontalSelectLine.gameObject.SetActive(true);
horizontalSelectLine.position = new Vector2(horizontalSelectLine.position.x, selectedPiece.rect.position.y);
moving = game.getNodePiecesFromTheSameLineX(selectedPiece);
foreach (NodePiece piece in moving)
{
Vector2 pos = Vector2.right * (int)((disX) / 63) * 64;
moveAmount = (int)((disX) / 63);
piece.MovePositionTo(game.getPositionFromPoint(piece.index) + pos, 30f);
}
break;
}
case 2:
{
verticalSelectLine.gameObject.SetActive(true);
verticalSelectLine.position = new Vector2(selectedPiece.rect.position.x, verticalSelectLine.position.y);
moving = game.getNodePiecesFromTheSameLineY(selectedPiece);
foreach (NodePiece piece in moving)
{
Vector2 pos = Vector2.up * (int)((disY) / 63) * 64;
moveAmount = -(int)((disY) / 63);
piece.MovePositionTo(game.getPositionFromPoint(piece.index) + pos, 20f);
}
break;
}
}
}
}