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Bruce Hill 2019-03-18 16:05:51 -07:00
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LICENSE Normal file
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MIT License
Copyright 2019 Bruce Hill <bruce@bruce-hill.com>
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.

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Makefile Normal file
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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

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# Conway
A termbox program for running Conway's Game of Life.
Different rulesets can be used with `conway -S23 -B3` syntax.

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// 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <termbox.h>
#include <unistd.h>
#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;
}