//创建格子
public void Generate()
{
Clear();
//计算左下角的位置,为了得到偏移量,使得每次创建的方格盘都能显示在屏幕中间
float minX = -(size.x * cellSize + (size.x - 1) * interval) / 2;
float minY = -(size.y * cellSize + (size.y - 1) * interval) / 2;
float offsetX = minX + cellSize / 2;
float offsetY = minY + cellSize / 2;
for (int i = 0; i < size.x; i++)
{
for (int j = 0; j < size.y; j++)
{
RawImage cell = new GameObject(i + "," + j).AddComponent <RawImage>();
cell.transform.SetParent(gridAnchor);
cell.transform.localPosition = new Vector3(i * (cellSize + interval) + offsetX, j * (cellSize + interval) + offsetY);
cell.rectTransform.sizeDelta = new Vector2(cellSize, cellSize);
Vector2Int pos = new Vector2Int(i, j);
GridCellCtrl cellCtrl = new GridCellCtrl(cell, pos);
//添加记录
_dicPos2Ctrl.Add(pos, cellCtrl);
_dicGO2Ctrl.Add(cell.gameObject, cellCtrl);
}
}
}
public void OnPointerClick(PointerEventData eventData)
{
GameObject pressGO = eventData.pointerEnter;
if (_dicGO2Ctrl.ContainsKey(pressGO))
{
//DrawLine(_dicGO2Ctrl[pressGO].pos);
GridCellCtrl ctrl = _dicGO2Ctrl[pressGO];
_start = ctrl.pos;
ClearLine();
ctrl.SetColor(Color.red);
}
}
void DrawLine(Vector2Int end)
{
ClearLine();
_dicPos2Ctrl[_start].SetColor(Color.red);
GridCellCtrl ctrl = _dicPos2Ctrl[end];
ctrl.SetColor(Color.green);
List <Vector2Int> touchedGrids = GridHelper.GetTouchedPosBetweenTwoPoints(_start, ctrl.pos);
for (int i = 0; i < touchedGrids.Count; i++)
{
_dicPos2Ctrl[touchedGrids[i]].SetColor(Color.black);
}
}