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Diffstat (limited to 'Demo/curses/life.py')
| -rwxr-xr-x | Demo/curses/life.py | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/Demo/curses/life.py b/Demo/curses/life.py deleted file mode 100755 index ddff8fa..0000000 --- a/Demo/curses/life.py +++ /dev/null @@ -1,216 +0,0 @@ -#!/usr/bin/env python -# life.py -- A curses-based version of Conway's Game of Life. -# Contributed by AMK -# -# An empty board will be displayed, and the following commands are available: -# E : Erase the board -# R : Fill the board randomly -# S : Step for a single generation -# C : Update continuously until a key is struck -# Q : Quit -# Cursor keys : Move the cursor around the board -# Space or Enter : Toggle the contents of the cursor's position -# -# TODO : -# Support the mouse -# Use colour if available -# Make board updates faster -# - -import random, string, traceback -import curses - -class LifeBoard: - """Encapsulates a Life board - - Attributes: - X,Y : horizontal and vertical size of the board - state : dictionary mapping (x,y) to 0 or 1 - - Methods: - display(update_board) -- If update_board is true, compute the - next generation. Then display the state - of the board and refresh the screen. - erase() -- clear the entire board - makeRandom() -- fill the board randomly - set(y,x) -- set the given cell to Live; doesn't refresh the screen - toggle(y,x) -- change the given cell from live to dead, or vice - versa, and refresh the screen display - - """ - def __init__(self, scr, char=ord('*')): - """Create a new LifeBoard instance. - - scr -- curses screen object to use for display - char -- character used to render live cells (default: '*') - """ - 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*'-')+'+' - self.scr.addstr(0, 0, border_line) - self.scr.addstr(self.Y+1,0, border_line) - for y in range(0, self.Y): - self.scr.addstr(1+y, 0, '|') - self.scr.addstr(1+y, self.X+1, '|') - self.scr.refresh() - - def set(self, y, x): - """Set a cell to the live state""" - if x<0 or self.X<=x or y<0 or self.Y<=y: - raise ValueError("Coordinates out of range %i,%i"% (y,x)) - self.state[x,y] = 1 - - def toggle(self, y, x): - """Toggle a cell's state between live and dead""" - if x<0 or self.X<=x or y<0 or self.Y<=y: - raise ValueError("Coordinates out of range %i,%i"% (y,x)) - if (x,y) in self.state: - del self.state[x,y] - self.scr.addch(y+1, x+1, ' ') - else: - 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=False) - - def display(self, update_board=True): - """Display the whole board, optionally computing one generation""" - M,N = self.X, self.Y - if not update_board: - for i in range(0, M): - for j in range(0, N): - if (i,j) in self.state: - self.scr.addch(j+1, i+1, self.char) - else: - self.scr.addch(j+1, i+1, ' ') - self.scr.refresh() - return - - d = {} - self.boring = 1 - for i in range(0, M): - L = range( max(0, i-1), min(M, i+2) ) - for j in range(0, N): - s = 0 - live = (i,j) in self.state - for k in range( max(0, j-1), min(N, j+2) ): - for l in L: - if (l,k) in self.state: - s += 1 - s -= live - if s == 3: - # Birth - 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 - elif live: - # Death - self.scr.addch(j+1, i+1, ' ') - self.boring = 0 - self.state = d - self.scr.refresh() - - def makeRandom(self): - "Fill the board with a random pattern" - 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) - - -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() - -def display_menu(stdscr, menu_y): - "Display the menu of possible keystroke commands" - erase_menu(stdscr, menu_y) - stdscr.addstr(menu_y, 4, - 'Use the cursor keys to move, and space or Enter to toggle a cell.') - stdscr.addstr(menu_y+1, 4, - 'E)rase the board, R)andom fill, S)tep once or C)ontinuously, Q)uit') - -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 - 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=False) - - # xpos, ypos are the cursor's position - xpos, ypos = board.X//2, board.Y//2 - - # Main loop: - while (1): - stdscr.move(1+ypos, 1+xpos) # Move the cursor - c = stdscr.getch() # Get a keystroke - if 0<c<256: - c = chr(c) - if c in ' \n': - board.toggle(ypos, xpos) - elif c in 'Cc': - erase_menu(stdscr, menu_y) - stdscr.addstr(menu_y, 6, ' Hit any key to stop continuously ' - 'updating the screen.') - stdscr.refresh() - # Activate nodelay mode; getch() will return -1 - # 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() - board.display() - 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 'Rr': - board.makeRandom() - 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 -= 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) |