106 строки
2.3 KiB
C
106 строки
2.3 KiB
C
/*
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* Copyright 2013 The Emscripten Authors. All rights reserved.
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* Emscripten is available under two separate licenses, the MIT license and the
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* University of Illinois/NCSA Open Source License. Both these licenses can be
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* found in the LICENSE file.
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*/
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// From http://rosettacode.org/wiki/Conway%27s_Game_of_Life#C
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define for_x for (int x = 0; x < w; x++)
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#define for_y for (int y = 0; y < h; y++)
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#define for_xy for_x for_y
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void show(void *u, int w, int h)
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{
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int (*univ)[w] = u;
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for_x printf("-"); printf("\n");
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for_y {
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for_x printf(univ[y][x] ? "[]" : " ");
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printf("\n");
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}
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for_x printf("-"); printf("\n");
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fflush(stdout);
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}
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void evolve(void *u, int w, int h)
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{
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unsigned (*univ)[w] = u;
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unsigned new[h][w];
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for_y for_x {
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int n = 0;
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for (int y1 = y - 1; y1 <= y + 1; y1++)
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for (int x1 = x - 1; x1 <= x + 1; x1++)
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if (univ[(y1 + h) % h][(x1 + w) % w])
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n++;
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if (univ[y][x]) n--;
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new[y][x] = (n == 3 || (n == 2 && univ[y][x]));
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}
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for_y for_x univ[y][x] = new[y][x];
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}
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void nudge(void *u, int w, int h)
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{
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unsigned (*univ)[w] = u;
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int sum = 0;
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for_xy sum += univ[y][x];
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while (sum < (w*h)/8) {
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int x = sum & (w-1);
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int y = (sum*sum) & (h-1);
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univ[y][x] = 1;
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sum++;
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}
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}
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void game(int w, int h, int i)
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{
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unsigned univ[h][w];
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//for_xy univ[y][x] = rand() < RAND_MAX / 10 ? 1 : 0;
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int acc = 0; // nonrandom generation, for benchmarking
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for_xy {
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acc += (x*17) % (y*3 + 1);
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univ[y][x] = acc & 1;
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}
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while (i != 0) {
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//show(univ, w, h);
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evolve(univ, w, h);
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if (i > 0) {
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i--;
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nudge(univ, w, h); // keep it interesting for benchmark
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} else {
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#if !__EMSCRIPTEN__
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usleep(20000);
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#endif
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show(univ, w, h);
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}
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}
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show(univ, w, h);
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}
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int main(int argc, char **argv)
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{
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int w, h, i;
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int arg = argc > 1 ? argv[1][0] - '0' : 3;
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switch(arg) {
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case 0: return 0; break;
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case 1: w = h = 32; i = 2500; break;
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case 2: w = h = 32; i = 13000; break;
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case 3: w = h = 32; i = 24000; break;
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case 4: w = h = 32; i = 5*24000; break;
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case 5: w = h = 32; i = 10*24000; break;
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default: printf("error: %d\\n", arg); return -1;
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}
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printf("life: %d,%d,%d,%d\n", arg, w, h, i);
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game(w, h, i);
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return 0;
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}
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