C++编程之美-代码清单1-28

代码清单1-28

While (OffsetY < N - maxRow)
     OffsetY++
     Flag = 0
     For i = 0 To 3                             // 判断是否和已有方块重合
          For j = 0 To 3
               If (Block[i][j] <> 0
                    And Area[OffsetX + i][OffsetY + j] <> 0)
               Then
                    Flag = 1
               End If
          Next
     Next
     If (Flag = 1) Then Return OffsetY - 1  // 如果有重合，则不能下落到该行
Loop