diff options
| -rwxr-xr-x | Demo/curses/life.py | 128 |
1 files changed, 61 insertions, 67 deletions
diff --git a/Demo/curses/life.py b/Demo/curses/life.py index a787e26..a5bbed2 100755 --- a/Demo/curses/life.py +++ b/Demo/curses/life.py @@ -44,14 +44,15 @@ class LifeBoard: scr -- curses screen object to use for display char -- character used to render live cells (default: '*') """ - self.state={} ; self.scr=scr + self.state = {} + self.scr = scr Y, X = self.scr.getmaxyx() self.X, self.Y = X-2, Y-2-1 self.char = char self.scr.clear() # Draw a border around the board - border_line='+'+(self.X*'-')+'+' + border_line = '+'+(self.X*'-')+'+' self.scr.addstr(0, 0, border_line) self.scr.addstr(self.Y+1,0, border_line) for y in range(0, self.Y): @@ -73,16 +74,16 @@ class LifeBoard: del self.state[x,y] self.scr.addch(y+1, x+1, ' ') else: - self.state[x,y]=1 + self.state[x,y] = 1 self.scr.addch(y+1, x+1, self.char) self.scr.refresh() def erase(self): """Clear the entire board and update the board display""" - self.state={} - self.display(update_board=0) + self.state = {} + self.display(update_board=False) - def display(self, update_board=1): + def display(self, update_board=True): """Display the whole board, optionally computing one generation""" M,N = self.X, self.Y if not update_board: @@ -95,42 +96,46 @@ class LifeBoard: self.scr.refresh() return - d={} ; self.boring=1 + d = {} + self.boring = 1 for i in range(0, M): - L=range( max(0, i-1), min(M, i+2) ) + L = range( max(0, i-1), min(M, i+2) ) for j in range(0, N): - s=0 - live=self.state.has_key( (i,j) ) + s = 0 + live = self.state.has_key( (i,j) ) for k in range( max(0, j-1), min(N, j+2) ): for l in L: if self.state.has_key( (l,k) ): - s=s+1 - s=s-live - if s==3: + s += 1 + s -= live + if s == 3: # Birth - d[i,j]=1 + d[i,j] = 1 self.scr.addch(j+1, i+1, self.char) - if not live: self.boring=0 - elif s==2 and live: d[i,j]=1 # Survival + if not live: self.boring = 0 + elif s == 2 and live: d[i,j] = 1 # Survival elif live: # Death self.scr.addch(j+1, i+1, ' ') - self.boring=0 - self.state=d + self.boring = 0 + self.state = d self.scr.refresh() def makeRandom(self): "Fill the board with a random pattern" - self.state={} + self.state = {} for i in range(0, self.X): for j in range(0, self.Y): - if random.random() > 0.5: self.set(j,i) + if random.random() > 0.5: + self.set(j,i) def erase_menu(stdscr, menu_y): "Clear the space where the menu resides" - stdscr.move(menu_y, 0) ; stdscr.clrtoeol() - stdscr.move(menu_y+1, 0) ; stdscr.clrtoeol() + stdscr.move(menu_y, 0) + stdscr.clrtoeol() + stdscr.move(menu_y+1, 0) + stdscr.clrtoeol() def display_menu(stdscr, menu_y): "Display the menu of possible keystroke commands" @@ -140,18 +145,17 @@ def display_menu(stdscr, menu_y): stdscr.addstr(menu_y+1, 4, 'E)rase the board, R)andom fill, S)tep once or C)ontinuously, Q)uit') -def main(stdscr): - +def keyloop(stdscr): # Clear the screen and display the menu of keys stdscr.clear() stdscr_y, stdscr_x = stdscr.getmaxyx() - menu_y=(stdscr_y-3)-1 + menu_y = (stdscr_y-3)-1 display_menu(stdscr, menu_y) # Allocate a subwindow for the Life board and create the board object - subwin=stdscr.subwin(stdscr_y-3, stdscr_x, 0, 0) - board=LifeBoard(subwin, char=ord('*')) - board.display(update_board=0) + subwin = stdscr.subwin(stdscr_y-3, stdscr_x, 0, 0) + board = LifeBoard(subwin, char=ord('*')) + board.display(update_board=False) # xpos, ypos are the cursor's position xpos, ypos = board.X/2, board.Y/2 @@ -159,9 +163,9 @@ def main(stdscr): # Main loop: while (1): stdscr.move(1+ypos, 1+xpos) # Move the cursor - c=stdscr.getch() # Get a keystroke + c = stdscr.getch() # Get a keystroke if 0<c<256: - c=chr(c) + c = chr(c) if c in ' \n': board.toggle(ypos, xpos) elif c in 'Cc': @@ -173,50 +177,40 @@ def main(stdscr): # if no keystroke is available, instead of waiting. stdscr.nodelay(1) while (1): - c=stdscr.getch() - if c!=-1: break - stdscr.addstr(0,0, '/'); stdscr.refresh() + c = stdscr.getch() + if c != -1: + break + stdscr.addstr(0,0, '/') + stdscr.refresh() board.display() - stdscr.addstr(0,0, '+'); stdscr.refresh() + stdscr.addstr(0,0, '+') + stdscr.refresh() stdscr.nodelay(0) # Disable nodelay mode display_menu(stdscr, menu_y) - elif c in 'Ee': board.erase() - elif c in 'Qq': break + elif c in 'Ee': + board.erase() + elif c in 'Qq': + break elif c in 'Rr': board.makeRandom() - board.display(update_board=0) + board.display(update_board=False) elif c in 'Ss': board.display() else: pass # Ignore incorrect keys - elif c==curses.KEY_UP and ypos>0: ypos=ypos-1 - elif c==curses.KEY_DOWN and ypos<board.Y-1: ypos=ypos+1 - elif c==curses.KEY_LEFT and xpos>0: xpos=xpos-1 - elif c==curses.KEY_RIGHT and xpos<board.X-1: xpos=xpos+1 - else: pass # Ignore incorrect keys - -if __name__=='__main__': - try: - # Initialize curses - stdscr=curses.initscr() - # Turn off echoing of keys, and enter cbreak mode, - # where no buffering is performed on keyboard input - curses.noecho() ; curses.cbreak() - - # In keypad mode, escape sequences for special keys - # (like the cursor keys) will be interpreted and - # a special value like curses.KEY_LEFT will be returned - stdscr.keypad(1) - main(stdscr) # Enter the main loop - # Set everything back to normal - stdscr.keypad(0) - curses.echo() ; curses.nocbreak() - curses.endwin() # Terminate curses - except: - # In the event of an error, restore the terminal - # to a sane state. - stdscr.keypad(0) - curses.echo() ; curses.nocbreak() - curses.endwin() - traceback.print_exc() # Print the exception + elif c == curses.KEY_UP and ypos>0: ypos -= 1 + elif c == curses.KEY_DOWN and ypos<board.Y-1: ypos += 1 + elif c == curses.KEY_LEFT and xpos>0: xpos -= 1 + elif c == curses.KEY_RIGHT and xpos<board.X-1: xpos += 1 + else: + # Ignore incorrect keys + pass + + +def main(stdscr): + keyloop(stdscr) # Enter the main loop + + +if __name__ == '__main__': + curses.wrapper(main) |