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Diffstat (limited to 'docs/history/17-o3-boundaries/code/examples/life.zc')
| -rw-r--r-- | docs/history/17-o3-boundaries/code/examples/life.zc | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/docs/history/17-o3-boundaries/code/examples/life.zc b/docs/history/17-o3-boundaries/code/examples/life.zc deleted file mode 100644 index a43d660..0000000 --- a/docs/history/17-o3-boundaries/code/examples/life.zc +++ /dev/null @@ -1,38 +0,0 @@ -// conway's life on a 10 x 20 torus, with typed 2d arrays in a struct. -// a glider walks diagonally and wraps around the edges. -const H = 10, W = 20; -struct board { [10][20]int c; }; - -int get(*board b, int y, int x) { return b.c[(y + H) % H][(x + W) % W]; } -fn step(*board from, *board to) -{ - for (int y = 0; y < H; y++) - for (int x = 0; x < W; x++) { - int n = 0; - for (int dy = 0 - 1; dy <= 1; dy++) - for (int dx = 0 - 1; dx <= 1; dx++) - if (dy || dx) n += get(from, y + dy, x + dx); - to.c[y][x] = n == 3 || (n == 2 && from.c[y][x]); - } - return 0; -} -fn show(*board b, int gen) -{ - puts("generation "); putn(gen); putc(10); - for (int y = 0; y < H; y++) { for (int x = 0; x < W; x++) putc(b.c[y][x] ? '#' : '.'); putc(10); } - return 0; -} -fn main() -{ - *board a = new(board), b = new(board); - a.c[0][1] = 1; a.c[1][2] = 1; a.c[2][0] = 1; a.c[2][1] = 1; a.c[2][2] = 1; - // two generations a pass, a -> b -> a: owned boards can't be swapped - // through a temporary, since the analyzer can't follow that - for (int g = 0; g <= 40; g += 2) { - if (g % 20 == 0) show(a, g); - step(a, b); - step(b, a); - } - free(d*a); free(d*b); - return 0; -} |
