Question

我有一段代码可以解决这个问题：

int pieceX = 0;
int pieceY = 0;

int board[8][47] = {{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};

if (pieceX > 0 && pieceY < 46) {

  /* If I remove this it doesn't crash */
  if (board[pieceX-1][pieceY] == 0 && board[pieceX][pieceY+1] == 0) {
    pieceX -= 1;
  }
  /*-----------------------------------*/
}

据我所知，我正在初始化我的数组，并且我仍然在索引范围内。我对Processing或Arduino的工作量不大，所以我希望它是简单/明显的。

编辑：嗯..我刚用这段代码做了一个简约的测试版本，它没有崩溃。所以，这与本例中没有的代码有关。该死的。试着把这些线都归零。（在正确隔离问题代码之前发布此内容我不好。）虽然这准确地描述了问题，但它不会重现它。奇怪的错误。

编辑2：这不会崩溃：

if (buttonA == HIGH) {
  if (pieceX > 0 && pieceX < 8 && pieceY > 0 && pieceY < 46) {
    if (board[0][0] == 0) {
    }
  }
}

这不会崩溃：

if (buttonA == HIGH) {
  if (pieceX > 0 && pieceX < 8 && pieceY > 0 && pieceY < 46) {
    pieceX -= 1;
  }
}

这次失败：

if (buttonA == HIGH) {
  if (pieceX > 0 && pieceX < 8 && pieceY > 0 && pieceY < 46) {
    if (board[0][0] == 0) {
      pieceX -= 1;
    }
  }
}

知道发生了什么事吗？ ButtonA从来都不是HIGH，所以..我调整的代码甚至不应该重要（它都会验证并上传得很好。）

编辑3：崩溃：

if (buttonA == HIGH) {
  if (pieceX > 0 && pieceX < 8 && pieceY > 0 && pieceY < 46) {
    if (board[0][0] == 0) {
      pieceX -= 1;
    }
  }
}

这不是：

if (0 == 1) {
  if (pieceX > 0 && pieceX < 8 && pieceY > 0 && pieceY < 46) {
    if (board[0][0] == 0) {
      pieceX -= 1;
    }
  }
}

崩溃了：

if (buttonA == HIGH) {
  if (pieceX > 0 && pieceX < 8 && pieceY > 0 && pieceY < 46) {
    if (board[0][0] == 0) {
      pieceX = 1;
    }
  }
}

这不是：

if (buttonA == HIGH) {
  if (pieceX > 0 && pieceX < 8 && pieceY > 0 && pieceY < 46) {
      pieceX = 1;
  }
}

而这不是：

if (buttonA == HIGH) {
  if (pieceX > 0 && pieceX < 8 && pieceY > 0 && pieceY < 46) {
    if (board[0][0] == 0) {
    }
  }
}

编辑，here是完整的源代码。我只有几个小时的黑白马利奥博士克隆。我从不用这种语言写作，所以......可能有点草率。更多关于处理/视频游戏硬件/ arduino的随机学习实验。

Answer 1

由于这个问题似乎不稳定，我猜你会破坏你的筹码。

我不确定您使用的是哪个Arduino以及您定义了多少其他变量。

您创建的数组是8 * 47 * 2 = 752字节，Arduino Uno有2048个ram字节用于堆栈和所有变量。

编辑：你可以暂时减少阵列的大小（可能是4 * 10），看看它是否会停止崩溃？

您可以做的另一项测试是在修改值之前列出值并验证它们都是0。

Answer 2

这看起来好像你的内存不足。

int board[8][47]

消耗752个字节的内存。另外

TV.begin(NTSC,120,96);

将致电

char TVout::begin(uint8_t mode, uint8_t x, uint8_t y) {

    // check if x is divisable by 8
    if ( !(x & 0xF8))
            return 1;
    x = x/8;

    screen = (unsigned char*)malloc(x * y * sizeof(unsigned char));

尝试分配1440字节的内存。 1440 + 752 == 2192＆gt; 2048 == Arduino的SRAM大小

所以你的内存不足了。

你可以将int [8] [47]从int切换到int8_t或uint8_t吗？这会将阵列的内存消耗减少2.但是你的内存仍然非常紧张。

Answer 3

这看起来好像你的内存不足。您可以使用更少的内存。

看起来任何给定的棋盘元素都是0或1。

如果我错了，请忽略我的其余陈述。否则你“可以”制作这样的阵列。

 char board [47];
 first  = 0b00000001;    //binary mask, for binary and
 second = 0b00000010;
 third =  0b00000100;
 ...

然后向上查找

if (board[33]&second == 0 )     \\you are testing what was called board[2][33]

这可能会帮助你。

Arduino多维阵列崩溃

3 个答案: