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86 lines
1.5 KiB
C
86 lines
1.5 KiB
C
module game_of_life;
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import std::io;
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import libc;
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extern fn void usleep(int time);
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struct GameBoard
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{
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int h;
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int w;
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char* world;
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char* temp;
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}
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fn void GameBoard.show(GameBoard *board)
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{
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io::printf("\e[H");
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char* current = board.world;
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for (int y = 0; y < board.h; y++)
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{
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for (int x = 0; x < board.w; x++)
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{
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io::printf(*current ? "\e[07m \e[m" : " ");
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current++;
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}
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io::printf("\e[E");
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}
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libc::fflush(libc::stdout());
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}
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fn void GameBoard.evolve(GameBoard *board)
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{
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for (int y = 0; y < board.h; y++)
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{
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for (int x = 0; x < board.w; x++)
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{
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int n = 0;
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for (int y1 = y - 1; y1 <= y + 1; y1++)
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{
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for (int x1 = x - 1; x1 <= x + 1; x1++)
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{
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int actualX = (x1 + board.w) % board.w;
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int actualY = (y1 + board.h) % board.h;
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if (board.world[actualX + actualY * board.w]) n++;
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}
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}
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if (board.world[x + y * board.w]) n--;
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board.temp[x + y * board.w] = (char)(n == 3 || (n == 2 && board.world[x + y * board.w]));
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}
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}
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for (int i = 0; i < board.w * board.h; i++)
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{
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board.world[i] = board.temp[i];
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}
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}
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fn int main(int c, char** v)
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{
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int w = 0;
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int h = 0;
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if (c > 1) w = libc::atoi(v[1]);
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if (c > 2) h = libc::atoi(v[2]);
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if (w <= 0) w = 30;
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if (h <= 0) h = 30;
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GameBoard board;
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board.w = w;
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board.h = h;
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board.world = mem::alloc((ulong)(h * w));
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board.temp = mem::alloc((ulong)(h * w));
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for (int i = h * w - 1; i >= 0; i--)
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{
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board.world[i] = libc::rand() % 10 == 0 ? 1 : 0;
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}
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for (int j = 0; j < 1000; j++)
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{
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board.show();
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board.evolve();
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usleep(200000);
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}
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return 1;
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} |