A curses-game I need help with.
Gasten
operagasten at gmail.com
Sun Oct 8 06:21:15 EDT 2006
Hello.
The last weeks I've been coding a roguelike (you know, like nethack) in
python using the nCurses library. Some week ago I ran into a problem:
When I made the object for messagebar-output, I found a bug that I
can't figure out (believe me; I've tried everything and asked for help
several times on the IRC-channel).
The updateMsg() and iMsg() takes a list of message-lines as argument
(or process a string to a list), and it'll output each of them to the
messagebar, output a sign that say: More, and wait for the user to hit
space, and then output another line. The last line will just be
outputed, without waiting for the user to hit space. Thou, that doesn't
work. It doesn't output the last line. Not when there are more than one
line, and not when there is just that one line.
I've tried calling noutrefresh() and doupdate() instead of just
refresh(), I've rebuilt the structure of the methods, and done all
sorts of things. By writing debug-messages to a file, I've understood
that the last addstr() DO output the line, but the refresh isn't
working. Or something else isn't working.
Can you help?
I'll just append all my code here (for anyone to test), so you who
doesn't want to read this humble beginners code can skip to another
message. Thank you for your time.
(So far I've understood, is that iMsg() and updateMsg() is wrong. Line
71 and 92.)
try:
import curses
except ImportError:
print "Missing the Curses-library."
print "Please install the curses-library correctly."
SystemExit
#---------------------------------------------------------------
class Game:
"""The Game-object. Controls the windows, global settings and so
on."""
def __init__(self):
self.mainwin = curses.initscr()
## Some basic settings
curses.noecho()
curses.cbreak()
self.mainwin.keypad(1)
curses.curs_set(0)
self.msg = Msg()
self.msg.msg(["Welcome to The Game! Lets watch another fearless
samurai", "get beaten bloody in the arena!"])
self.mainwin.addstr(3,15, '+' + '-' * 62 + '+')
self.mainwin.addstr(22,15, '+' + '-' * 62 + '+')
self.mainwin.vline(4,15, '|', 18)
self.mainwin.vline(4,78, '|', 18)
movedir = {
'up': {'x':0, 'y':-1},
'down': {'x':0, 'y':+1},
'right': {'x':+1, 'y':0},
'left': {'x':-1, 'y':0},
'downright': {'x':+1, 'y':+1},
'upright': {'x':+1, 'y':-1},
'downleft': {'x':-1, 'y':+1},
'upleft': {'x':-1, 'y':-1}
}
walls = (
ord('|'),
ord('+'),
ord('-')
)
#---------------------------------------------------------------
class Msg:
"""The messagehandeling and -bar system."""
def __init__(self):
self.msgs = []
def printMore(self):
# Print the little #More#-sign
game.mainwin.addch(1, 71, curses.ACS_BLOCK, curses.A_REVERSE)
game.mainwin.addstr(1, 72, "More", curses.A_REVERSE)
game.mainwin.addch(1, 76, curses.ACS_BLOCK, curses.A_REVERSE)
def msg(self, msg):
if isinstance(msg, str):
self.msgs.append(msg)
else:
self.msgs = self.msgs + msg
def ereasMsg(self):
for count in range(0,2):
game.mainwin.move(count,0)
game.mainwin.clrtoeol()
def updateMsg(self):
count = len(self.msgs)
for msg in self.msgs: # Print one msg after
another
game.mainwin.addstr(0,0, msg) # Print the actual message
if count > 1: # If there are two or more
laft, print a #More#-sign.
count -= 1
self.printMore()
game.mainwin.refresh()
while 1:
next = game.mainwin.getch()
if next == ord(' '):
self.ereasMsg()
break
else:
continue
else:
game.mainwin.refresh()
self.msgs = [] # When done, kill all messages
return True
def iMsg(self, msg):
"""Same as msg(), but the screen will refresh instantly.
'i' is standing for Interface or Instant message."""
if isinstance(msg, str):
msg = [msg] # List'it!
count = len(msg)
for item in msg:
if count > 1:
count -= 1
self.printMore()
game.mainwin.addstr(0,0, item)
game.mainwin.refresh()
while 1:
next = game.mainwin.getch()
if next == ord(' '):
self.ereasMsg()
break
else:
continue
else:
game.mainwin.addstr(0,0, item)
return
#---------------------------------------------------------------
class Samurai:
"""This is the object of the mighty Samurai. Phe4r him. He can
move.
He can spawn. He will be able to kick som robo butt too,
but not now."""
def __init__(self):
## Configuring game values.
self.loc = {
"x": 20,
"y": 8
}
self.samuraichar = ord("X")
# spawn
game.mainwin.addch(self.loc['y'], self.loc['x'],
self.samuraichar)
def move(self, dir, speed=1):
# Move in dir speed number of times.
for count in range(1, speed + 1):
newX = self.loc['x'] + game.movedir[dir]['x']
newY = self.loc['y'] + game.movedir[dir]['y']
# Checks that all is clear.
if game.mainwin.inch(newY, newX) not in game.walls:
# Delete old
game.mainwin.addch(self.loc['y'], self.loc['x'], ' ')
self.loc['x'] = newX
self.loc['y'] = newY
# Create a new character.
game.mainwin.addch(self.loc['y'], self.loc['x'],
self.samuraichar)
else:
game.msg.iMsg("You can't go there.")
return
#---------------------------------------------------------------
def main():
global game, player
game = Game()
player = Samurai()
running = True
while running:
key_command = game.mainwin.getch()
if key_command == ord('8'): ## Movement-commands
player.move('up')
elif key_command == ord('2'):
player.move('down')
elif key_command == ord('4'):
player.move('left')
elif key_command == ord('6'):
player.move('right')
elif key_command == ord('7'):
player.move('upleft')
elif key_command == ord('9'):
player.move('upright')
elif key_command == ord('1'):
player.move('downleft')
elif key_command == ord('3'):
player.move('downright')
elif key_command == ord('Q'): ## Exit
break
elif key_command == ord('5'): ## Wait
pass
elif key_command == ord('x'): ## print location
game.msg.iMsg("X: " + str(player.loc['x']) + ", Y: " +
str(player.loc['y']))
elif key_command == ord('z'):
strlist = ""
for i in game.walls:
strlist = strlist + str(i) + " "
game.msg.iMsg(strlist)
elif key_command == ord('c'):
for count in range(0,2):
game.mainwin.move(count,0)
game.mainwin.clrtoeol()
else:
game.msg.iMsg("That is not a valid command.")
if len(game.msg.msgs) == 0: # If there are any msgs.
game.mainwin.refresh()
else:
game.msg.updateMsg()
game.msg.ereasMsg()
if __name__ == "__main__":
try:
import psyco
psyco.full()
except ImportError:
# Don't use something that doesn't exists.
pass
main()
curses.nocbreak(); game.mainwin.keypad(0); curses.echo()
curses.endwin()
(The code is GPL'ed, Martin Ahnelöv 06)
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