commit f24e990a4c9d86f9eeaaef0dec5a34edd6b95f93 Author: Bruce Hill Date: Mon Mar 18 16:05:51 2019 -0700 Initial commit diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..b692a92 --- /dev/null +++ b/LICENSE @@ -0,0 +1,20 @@ +MIT License +Copyright 2019 Bruce Hill + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..a63736f --- /dev/null +++ b/Makefile @@ -0,0 +1,40 @@ +PREFIX= +CC=cc +CFLAGS=-O3 -std=gnu99 +LIBS=-ltermbox +NAME=conway + +all: $(NAME) + +clean: + rm $(NAME) + +run: $(NAME) + ./$(NAME) + +$(NAME): $(NAME).c + $(CC) $(NAME).c $(LIBS) $(CFLAGS) -o $(NAME) + +install: $(NAME) + @prefix="$(PREFIX)"; \ + if [[ ! $$prefix ]]; then \ + read -p $$'\033[1mWhere do you want to install? (default: /usr/local) \033[0m' prefix; \ + fi; \ + if [[ ! $$prefix ]]; then \ + prefix="/usr/local"; \ + fi; \ + mkdir -pv $$prefix/bin $$prefix/share/man/man1 \ + && cp -v $(NAME) $$prefix/bin/ \ + && cp -v doc/$(NAME).1 $$prefix/share/man/man1/ + +uninstall: + @prefix="$(PREFIX)"; \ + if [[ ! $$prefix ]]; then \ + read -p $$'\033[1mWhere do you want to uninstall from? (default: /usr/local) \033[0m' prefix; \ + fi; \ + if [[ ! $$prefix ]]; then \ + prefix="/usr/local"; \ + fi; \ + echo "Deleting..."; \ + rm -rvf $$prefix/bin/$(NAME) $$prefix/share/man/man1/$(NAME).1 + diff --git a/README.md b/README.md new file mode 100644 index 0000000..358a529 --- /dev/null +++ b/README.md @@ -0,0 +1,3 @@ +# Conway +A termbox program for running Conway's Game of Life. +Different rulesets can be used with `conway -S23 -B3` syntax. diff --git a/conway.c b/conway.c new file mode 100644 index 0000000..9c5b7d4 --- /dev/null +++ b/conway.c @@ -0,0 +1,121 @@ +// A console conway's game of life program by Bruce Hill +// Released under the MIT license, see LICENSE for details. +// This file contains the main code for the table viewer. + +#include +#include +#include +#include +#include +#include + +#ifndef bool +typedef char bool; +#endif + +static bool survive[9] = {0,0,1,1,0,0,0,0,0}; +static bool birth[9] = {0,0,0,1,0,0,0,0,0}; + +static void update(const bool *cells, bool *future_cells) +{ + int W = tb_width()/2, H = tb_height(); + for (int y = 0; y < H; y++) { + for (int x = 0; x < W; x++) { + int neighbors = ( + cells[(y-1 % H)*W + (x-1 % W)] + + cells[(y-1 % H)*W + (x % W)] + + cells[(y-1 % H)*W + (x+1 % W)] + + cells[y*W + (x-1 % W)] + + cells[y*W + (x+1 % W)] + + cells[(y+1 % H)*W + (x-1 % W)] + + cells[(y+1 % H)*W + (x % W)] + + cells[(y+1 % H)*W + (x+1 % W)] + ); + future_cells[y*W + x] = cells[y*W + x] ? survive[neighbors] : birth[neighbors]; + if (future_cells[y*W + x] != cells[y*W + x]) { + tb_change_cell(2*x, y, ' ', 0, future_cells[y*W + x] ? 8 : 0); + tb_change_cell(2*x+1, y, ' ', 0, future_cells[y*W + x] ? 8 : 0); + } + } + } +} + +int main(int argc, char **argv) { + for (int i = 1; i < argc; i++) { + if (strcmp(argv[i], "--help") == 0) { + printf("Conway's Game of Life Viewer\nUsage: conway [-S012345678] [-B012345678]\n"); + return 0; + } else if (strncmp(argv[i], "-B", 2) == 0) { + memset(birth, 0, sizeof(birth)); + for (char *p = &argv[i][2]; *p; p++) { + if ('0' <= *p && *p <= '8') + birth[*p - '0'] = 1; + } + } else if (strncmp(argv[i], "-S", 2) == 0) { + memset(survive, 0, sizeof(survive)); + for (char *p = &argv[i][2]; *p; p++) { + if ('0' <= *p && *p <= '8') + survive[*p - '0'] = 1; + } + } + } + + int ret = tb_init(); + if (ret) { + fprintf(stderr, "tb_init() failed with error code %d\n", ret); + return 1; + } + tb_select_input_mode(TB_INPUT_MOUSE); + + int flipflop = 0; + int W = tb_width()/2, H = tb_height(); + bool *buffers[2]; + resize: + buffers[0] = calloc(W*H, sizeof(bool)); + buffers[1] = calloc(W*H, sizeof(bool)); + for (int x = 0; x < W; x++) { + for (int y = 0; y < H; y++) { + buffers[flipflop][y*W+x] = random() % 2; + } + } + + tb_clear(); + while (1) { + update(buffers[flipflop], buffers[!flipflop]); + flipflop = !flipflop; + tb_present(); + usleep(60000); + struct tb_event ev; + while (tb_peek_event(&ev, 0)) { + switch (ev.type) { + case TB_EVENT_RESIZE: + W = tb_width()/2, H = tb_height(); + goto resize; + + case TB_EVENT_KEY: + switch (ev.key) { + case TB_KEY_ESC: + if (tb_peek_event(&ev, 50) == 0) + goto done; + else break; + } + switch (ev.ch) { + case 'q': + goto done; + } + break; + + case TB_EVENT_MOUSE: + buffers[flipflop][ev.y*W + ev.x/2] = !buffers[flipflop][ev.y*W + ev.x/2]; + tb_change_cell(2*(ev.x/2), ev.y, ' ', 0, buffers[flipflop][ev.y*W + ev.x/2] ? 8 : 0); + tb_change_cell(2*(ev.x/2)+1, ev.y, ' ', 0, buffers[flipflop][ev.y*W + ev.x/2] ? 8 : 0); + tb_present(); + usleep(10000); + break; + } + } + } + done: + tb_shutdown(); + return 0; +}