为什么我的 C++生命游戏无法正常运行?
编译并运行正常,但结果与应有的完全不同。
我剪掉了不相关的代码:
bool grid[1280][1024]; // hardcoded to my screen res for now
for (int x = 0; x<1280; x++) //init grid to false
{
for (int y = 0; y<1024; y++)
{
grid[x][y] = false;
}
}
grid[320][120] = true; // add a simple pattern
grid[320][121] = true;
grid[320][122] = true;
grid[320][123] = true;
grid[320][124] = true;
grid[320][125] = true;
grid[320][126] = true;
grid[320][127] = true;
grid[320][128] = true;
// [snipped]
for (int x = 1; x< (1280 - 1); x++)
{
for (int y = 1; y< (1024 - 1); y++)
{
int n = 0; // neighbours
if (grid[x-1][y-1]) n++; // top left
if (grid[x][y-1]) n++; // top middle
if (grid[x+1][y-1]) n++; // top right
if (grid[x-1][y]) n++; // left
if (grid[x+1][y]) n++; // right
if (grid[x-1][y+1]) n++; // bottom left
if (grid[x][y+1]) n++; // bottom middle
if (grid[x+1][y+1]) n++; // bottom right
if (grid[x][y]) // current cell is on
{
SetPixel(screen, x, y, on); // drawing function
if (n < 2) grid[x][y] = false; // die. :(
if (n > 3) grid[x][y] = false; // die. :(
// otherwise (2 or 3), survive. :)
}
else // current cell is off
{
SetPixel(screen, x, y, off); // drawing function
if (n == 3) grid[x][y] = true; // IT'S ALIVE!!!
}
}
}
This compiles and runs okay, but the results are totally different from what they should be.
I've snipped irrelavent code:
bool grid[1280][1024]; // hardcoded to my screen res for now
for (int x = 0; x<1280; x++) //init grid to false
{
for (int y = 0; y<1024; y++)
{
grid[x][y] = false;
}
}
grid[320][120] = true; // add a simple pattern
grid[320][121] = true;
grid[320][122] = true;
grid[320][123] = true;
grid[320][124] = true;
grid[320][125] = true;
grid[320][126] = true;
grid[320][127] = true;
grid[320][128] = true;
// [snipped]
for (int x = 1; x< (1280 - 1); x++)
{
for (int y = 1; y< (1024 - 1); y++)
{
int n = 0; // neighbours
if (grid[x-1][y-1]) n++; // top left
if (grid[x][y-1]) n++; // top middle
if (grid[x+1][y-1]) n++; // top right
if (grid[x-1][y]) n++; // left
if (grid[x+1][y]) n++; // right
if (grid[x-1][y+1]) n++; // bottom left
if (grid[x][y+1]) n++; // bottom middle
if (grid[x+1][y+1]) n++; // bottom right
if (grid[x][y]) // current cell is on
{
SetPixel(screen, x, y, on); // drawing function
if (n < 2) grid[x][y] = false; // die. :(
if (n > 3) grid[x][y] = false; // die. :(
// otherwise (2 or 3), survive. :)
}
else // current cell is off
{
SetPixel(screen, x, y, off); // drawing function
if (n == 3) grid[x][y] = true; // IT'S ALIVE!!!
}
}
}
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首先,它不起作用,因为你没有分离每个单元格的结果,即,如果 grid[0][0] 死了,那么这将立即反映在 grid[1][0] 的生或死上,这这不是生命游戏的运作方式。其次,它不起作用,因为您似乎没有运行游戏超过一次迭代。
Firstly, it doesn't work because you haven't separated each cell's results, i.e., if grid[0][0] dies, then this will be immediately reflected on grid[1][0]'s life or death, which is not how Game of Life works. Secondly, it doesn't work because you don't appear to have run the game more than one iteration.