void run_life(world *w, WINDOW *win){
draw_world(w, win);
nodelay(win, 1);
curs_set(0);
struct timeval tv1,tv2;
while(1){
double interupt = float_sleep(wait_time);
step_world(w);
draw_world(w, win);
if(wgetch(win) != ERR){
break;
}
}
nodelay(win, 0);
curs_set(1);
return;
}
/* Main method runs initialize() and update() */
int main(int argc, char **argv) {
/* get num bodies from the command line */
int num_bodies;
num_bodies = (argc == 2) ? atoi(argv[1]) : DEF_NUM_BODIES;
printf("Universe has %d bodies.\n", num_bodies);
/* set up the universe */
time_t cur_time;
time(&cur_time);
srand48((long)cur_time); // seed the RNG used in create_world
struct world *world = create_world(num_bodies);
/* set up graphics using Xlib */
Display *disp = XOpenDisplay(NULL);
int scr = DefaultScreen(disp);
Window win = XCreateSimpleWindow(
disp,
RootWindow(disp, scr),
0, 0,
WIDTH, HEIGHT,
0,
BlackPixel(disp, scr), WhitePixel(disp, scr));
XStoreName(disp, win, "N-Body Simulator");
Pixmap back_buf = XCreatePixmap(disp, RootWindow(disp, scr),
WIDTH, HEIGHT, DefaultDepth(disp, scr));
GC gc = XCreateGC(disp, back_buf, 0, 0);
// Make sure we're only looking for messages about closing the window
Atom del_window = XInternAtom(disp, "WM_DELETE_WINDOW", 0);
XSetWMProtocols(disp, win, &del_window, 1);
XSelectInput(disp, win, StructureNotifyMask);
XMapWindow(disp, win);
XEvent event;
// wait until window is mapped
while (1) {
XNextEvent(disp, &event);
if (event.type == MapNotify) {
break;
}
}
struct timespec delay={0, 1000000000 / 60}; // for 60 FPS
struct timespec remaining;
int frame_num = 0;
while (1) {
// check if the window has been closed
if (XCheckTypedEvent(disp, ClientMessage, &event)) {
break;
}
// we first draw to the back buffer then copy it to the front (`win`)
draw_world(disp, back_buf, gc, world);
XCopyArea(disp, back_buf, win, gc, 0, 0, WIDTH, HEIGHT, 0, 0);
step_world(world, 0.1);
frame_num++;
nanosleep(&delay, &remaining);
}
XFreeGC(disp, gc);
XFreePixmap(disp, back_buf);
XDestroyWindow(disp, win);
XCloseDisplay(disp);
return 0;
}
//interactively read initial conditons from the user
void setup_initial_conditons(world *w, WINDOW *win){
keypad(win, 1);
int c,y,x,ymax,xmax;
getyx(win, y ,x);
getmaxyx(win, ymax, xmax);
wmove(win, 0, 0);
while(c = wgetch(win)){
switch(c){
case KEY_UP:
// case KEY_SUP:
y = y > 0 ? y-1 : ymax;
break;
case KEY_DOWN:
// case KEY_SDOWN:
y = y < ymax ? y+1 : 0;
break;
case KEY_LEFT:
// case KEY_SLEFT:
x = x > 0 ? x-1 : xmax;
break;
case KEY_RIGHT:
// case KEY_SRIGHT:
x = x < xmax ? x+1 : 0;
break;
case KEY_BACKSPACE:
reset_grid(w);
draw_world(w, win);
x = y = 0;
break;
case '+':
wait_time += 0.05;
break;
case '-':
wait_time -= 0.05;
break;
case 'q':
exit(0);
case 'r':
randomize_grid(w);
draw_world(w, win);
x = y = 0;
break;
case 's':
step_world(w);
draw_world(w, win);
break;
case '\r':
case '\n':
waddch(win, '#');
w->grid[y*w->cols + x] = 1;
break;
case ' ':
return;
}
wmove(win, y ,x);
// if(c == KEY_SUP || c == KEY_SDOWN | c == KEY_SLEFT || c = KEY_SRIGHT){
// waddch(win, '#');
// wmove(win, y ,x);
// }
}
}
