gameshell/gamebase.py

# gamebase.py

import re as _re
import heapq as _hq
import gamemap as _gm
import gameevents as _ge
import random as _ra
import sys as _sys
import pickle as _pi

class GameBase(object):
    
    coordRegex = _re.compile(r'((-?[a-zA-Z]+) ?(-?[0-9]+))|((-?[0-9]+),? (-?[0-9]+))|(\(([0-9]+), ([0-9]+)\))')
    #coordRegex1 = _re.compile(r'(-?[a-zA-Z]+) ?(-?[0-9]+)') # "B12" or "B 12"
    #coordRegex2 = _re.compile(r'\(([0-9]+), ([0-9]+)\)') # "(2, 12)"
    #coordRegex3 = _re.compile(r'(-?[0-9]+),? (-?[0-9]+)') # "2 12" or "2, 12"
    
    def __init__(self):
        self.outstream = _sys.stdout
        self.__useFuncs = {}
        self.__gameEvents = {}
        self.__IOCalls = {} # {str : function}
        self.customVals = {} # for setting flags and such
        self.level = None
        self.persist = {} # {level : {thingName : thing}}
        self.ps2 = '? '
        self.eventQueue = []
        self.gameTime = 0.0
        self.skipLoop = True
        self.nextThing = 0
        
        # player info
        self.playerx = -1
        self.playery = -1
        self.prevx = -1 # prevx and prevy are for moving the player out of the way
        self.prevy = -1 # when the tile they're standing on becomes blocked.
        self.playerName = 'You'
        self.playerInv = {}
        
        # function deligates
        self.onLevelLoad = None # str : level name? -> None
        #self.onContainer = None # list : contents -> list : newContents, float : timeOpen
        
        # default events and useFuncs
        self.registerEvent('noop', self.handleNoOp)
        self.registerEvent('go', self.handleGo)
        self.registerEvent('arrive', self.handleArrive)
        self.registerEvent('use', self.handleUse)
        self.registerEvent('useon', self.handleUseOn)
        self.registerEvent('take', self.handleTake)
        self.registerEvent('drop', self.handleDrop)
        self.registerUseFunc('examine', self.examine)
        self.registerUseFunc('key', self.key)
        self.registerUseFunc('container', self.container)
        
    # Helper functions
    
    def requestInput(self, prompt = ''):
        """Like input by default, but should be overridden if you don't want
to get input from stdin."""
        return input(prompt)
        
    def letterToNumber(self, letter):
        if letter.isdecimal():
            return int(letter)
        ret = 0
        sign = 1
        start = 0
        for i in range(len(letter)):
            if letter[i] == '-':
                sign = -sign
                start -= 1
            elif letter[i].isalpha():
                if letter[i].isupper():
                    ret += (ord(letter[i]) - ord('A')) * (26**(i+start))
                else:
                    ret += (ord(letter[i]) - ord('a')) * (26**(i+start))
            else:
                return ret * sign
        return ret * sign
        
    def numberToLetter(self, number):
        if isinstance(number, str):
            return number
        ret = ''
        sign = ''
        if number == 0:
            return 'A'
        elif number < 0:
            sign = '-'
            number = -number
        while number > 0:
            ret += chr(ord('A') + number % 26)
            number = int(number / 26)
        return sign + ret
            
    def parseCoords(self, args, usePlayerCoords = True, allowInventory = True):
        """Takes an argument list, and figures out what it's talking about.
Returns (thing, x, y). "Thing" can be None."""
        coordStr = args[0]
        if len(args) > 1:
            coordStr += ' ' + args[1]
        #print(coordStr)
        x = -1
        y = -1
        match = GameBase.coordRegex.match(coordStr)
        if match != None: # if coordinates were given
            #print(match.group())
            groups = match.groups()
            ind = 0
            for i in range(len(groups)):
                if groups[i] == None or groups[i] == match.group():
                    continue
                else:
                    ind = i
                    break
            #print(groups[ind], groups[ind+1])
            x = self.letterToNumber(groups[ind])
            y = self.letterToNumber(groups[ind+1])
            #print(x, y)
            thing = self.level.getThingAtCoords(x, y)
            if thing != None and usePlayerCoords:
                return thing, thing.playerx, thing.playery
            else:
                return thing, x, y
        else: # if a name was given
            name = ' '.join(args)
            thing = self.level.getThingByName(name)
            if thing != None and usePlayerCoords:
                return thing, thing.playerx, thing.playery
            elif thing != None:
                return thing, thing.x, thing.y
            elif allowInventory:
                if name in self.playerInv:
                    thing = self.playerInv[name]
                    if thing != None:
                        return thing, -1, -1
                    else:
                        return None, -1, -1
                        #raise RuntimeError("'None' item named '{0}' in player inventory.".format(name))
                else:
                    return None, -1, -1
                    #raise ValueError("{0} cannot be reached.".format(name))
            else: # nothing
                return None, -1, -1
                #raise ValueError("{0} cannot be reached.".format(name))
        return None, x, y
        
    def justifyText(self, text, width = 80):
        ret = []
        text = text.lstrip().rstrip()
        
        # start by making it all one long line.
        text = _re.sub(r'\s{2,}', r' ', text)
        
        # then add newlines as needed.
        #i = 80
        #i = get_terminal_size()[0]
        i = width
        while i < len(text):
            while text[i] != ' ':
                i -= 1
            ret.append(text[:i])
            text = text[i+1:]
        ret.append(text)
        
        return '\n'.join(ret)
        
    def go(self, args):
        """go [-r] [to [the]] destination [additional arguments...]
Go to a location. "walk" and "move" are aliases of go.
-r: run to the location. "r" and "run" are aliases of -r.
The "run" command is an alias of "go -r".
"to" and "the" do nothing, and are intended only to make certain commands
make more sense from a linguistic perspective (for instance, one could
say "go to the balcony" rather than just "go balcony").
Destination can be a coordinate pair or object name. For instance, if one
wanted to go to D6, one could say "go to D6", "go to d 6", or "go to 3 6".
The letter is not case-sensitive."""
        if self.level == None:
            raise RuntimeError("Cannot move: No level has been loaded.")
        speed = 0.6666667
        if args[0] == '-r' or args[0] == 'r' or args[0] == 'run':
            speed = 0.3333333
            args.pop(0)
        if args[0] == 'to':
            args.pop(0)
        if args[0] == 'the':
            args.pop(0)
        thing, x, y = self.parseCoords(args, allowInventory = False)
        
        # Now we have a heading! Let's see if we can get there...
        if (x, y) == (self.playerx, self.playery):
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.ArriveEvent(self.playerName, x, y, 0.0)))
            return
        dist, path = self.level.path(x, y, self.playerx, self.playery)
        if dist == -1:
            print('{0} cannot reach {1}{2}.'.format(self.playerName, self.numberToLetter(x), y), file = self.outstream)
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
            return
        else:
            pos = self.level.coordsToInt(self.playerx, self.playery)
            space = path[pos]
            if space == -1:
                self.setEvent(0.0, _ge.ArriveEvent(self.playerName, self.playerx, self.playery, 0.0))
                return
            #target = self.level.coordsToInt(x, y)
            t = 1
            #while space != target:
            while space != -1:
                newx, newy = self.level.intToCoords(space)
                space = path[space]
                if space != -1:
                    self.setEvent(t * speed, _ge.GoEvent(self.playerName, newx, newy))
                else:
                    self.setEvent(t * speed, _ge.ArriveEvent(self.playerName, newx, newy, t * speed))
                    break
                t += 1
            #newx, newy = self.level.intToCoords(space)
            #_hq.heappush(self.eventQueue, (self.gameTime + t * speed, _ge.ArriveEvent(self.playerName, newx, newy, t * speed)))
        return
        
    def look(self, args):
        """look [at [the]] object
Describe an object.
"at" and "the" do nothing, and are intended only to make certain commands
make more sense from a linguistic perspective (for instance, one could
say "look at the balcony" rather than just "look balcony").
Object can be the name of the object, or its coordinates."""
        if len(args) == 0:
            print(self.justifyText(self.level.description), file = self.outstream)
        else:
            if args[0] == 'at':
                args.pop(0)
            if args[0] == 'the':
                args.pop(0)
            thing, x, y = self.parseCoords(args, usePlayerCoords = False)
            if not self.level.lineOfSight(self.playerx, self.playery, x, y):
                print("{} cannot see that.".format(self.playerName))
            elif thing == None:
                print("There is nothing to see here.\n", file = self.outstream)
            else:
                print(self.justifyText(str(thing)), file = self.outstream)
        #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
        
    def use(self, args):
        """use [-r] [the] object [on [the] object2]
Use an object. If the player is not already close to it, they will go to it.
use [-r] [the] item on [the] object
Use an item from the player's inventory on an object.
-r: run to the location. "r" and "run" are aliases of -r.
"the" does nothing, and is intended only to make certain commands
make more sense from a linguistic perspective (for instance, one could
say "use the lever" rather than just "use lever").
Object can be the name of the object, or its coordinates. It can also be
the name of an item in the player's inventory."""
        speed = 0.6666667
        if args[0] == '-r' or args[0] == 'r' or args[0] == 'run':
            speed = 0.3333333
            args.pop(0)
        if args[0] == 'the':
            args.pop(0)
        if 'on' in args:
            self.useOn(args, speed)
            return
        thing, x, y = self.parseCoords(args)
        if thing == None:
            print("There is nothing to use.", file = self.outstream)
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
            return
        if thing.thingType != 'u' and thing.name not in self.playerInv:
            print("The {0} cannot be used.".format(thing.name), file = self.outstream)
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
            return
        
        # Similar to go, but not quite the same.
        if (x, y) == (self.playerx, self.playery) or thing.name in self.playerInv:
            self.setEvent(0.125, _ge.UseEvent(thing))
            return
        dist, path = self.level.path(x, y, self.playerx, self.playery)
        if dist == -1:
            print('{0} cannot reach the {1}.'.format(self.playerName, thing.name), file = self.outstream)
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
            return
        else:
            pos = self.level.coordsToInt(self.playerx, self.playery)
            space = path[pos]
            #target = self.level.coordsToInt(x, y)
            t = 1
            #while space != target:
            while space != -1:
                newx, newy = self.level.intToCoords(space)
                space = path[space]
                self.setEvent(t * speed, _ge.GoEvent(self.playerName, newx, newy))
                t += 1
            #newx, newy = self.level.intToCoords(space)
            #_hq.heappush(self.eventQueue, (self.gameTime + t * speed, _ge.GoEvent(self.playerName, newx, newy)))
            self.setEvent(t * speed + 0.125, _ge.UseEvent(thing))
        return
        
    def useOn(self, args, speed):
        """Called by use when there is an 'on' clause"""
        onIndex = args.index('on')
        item, x, y = self.parseCoords(args[:onIndex])
        if args[onIndex+1] == 'the':
            onIndex += 1
        thing, x, y = self.parseCoords(args[onIndex+1:])
        if item == None or item.name not in self.playerInv:
            print("There is no {0} in the inventory.".format(item.name), file = self.outstream)
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
            return
        if thing == None and x < 0 and y < 0:
            print("Argument contains 'to' but with no real predicate.", file = self.outstream)
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
            return
            
        # Similar to go, but not quite the same.
        if (x, y) == (self.playerx, self.playery):
            self.setEvent(0.125, _ge.UseOnEvent(item, thing))
            return
        dist, path = self.level.path(x, y, self.playerx, self.playery)
        if dist == -1:
            if thing != None:
                print('{0} cannot reach the {1}.'.format(self.playerName, thing.name), file = self.outstream)
            else:
                print('{0} cannot reach {1}{2}.'.format(self.playerName, self.numberToLetter(x), y), file = self.outstream)
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
            return
        else:
            pos = self.level.coordsToInt(self.playerx, self.playery)
            space = path[pos]
            #target = self.level.coordsToInt(x, y)
            t = 1
            #while space != target:
            while space != -1:
                newx, newy = self.level.intToCoords(space)
                space = path[space]
                self.setEvent(t * speed, _ge.GoEvent(self.playerName, newx, newy))
                t += 1
            #newx, newy = self.level.intToCoords(space)
            #_hq.heappush(self.eventQueue, (self.gameTime + t * speed, _ge.GoEvent(self.playerName, newx, newy)))
            self.setEvent(t * speed + 0.125, _ge.UseOnEvent(item, thing))
        return
        
    def take(self, args):
        """take [the] item
Take an item. 'get' is an alias of take.
If the player is not already close to it, they will go to it.
"the" does nothing, and is intended only to make certain commands
make more sense from a linguistic perspective (for instance, one could
say "take the flask" rather than just "take flask").
Object can be the name of the object, or its coordinates."""
        speed = 0.6666667
        if args[0] == '-r' or args[0] == 'r' or args[0] == 'run':
            speed = 0.3333333
            args.pop(0)
        if args[0] == 'the':
            args.pop(0)
        thing, x, y = self.parseCoords(args)
        if thing == None:
            print("There is nothing to take.", file = self.outstream)
            return
        if thing.thingType != 'i':
            print("The {0} cannot be taken.".format(thing.name), file = self.outstream)
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
            return
        
        # Similar to go, but not quite the same.
        if (x, y) == (self.playerx, self.playery):
            self.setEvent(0.125, _ge.TakeEvent(thing))
            return
        dist, path = self.level.path(x, y, self.playerx, self.playery)
        if dist == -1:
            print('{0} cannot reach the {1}.'.format(self.playerName, thing.name), file = self.outstream)
            #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
            return
        else:
            pos = self.level.coordsToInt(self.playerx, self.playery)
            space = path[pos]
            #target = self.level.coordsToInt(x, y)
            t = 1
            #while space != target:
            while space != -1:
                newx, newy = self.level.intToCoords(space)
                space = path[space]
                self.setEvent(t * speed, _ge.GoEvent(self.playerName, newx, newy))
                t += 1
            #newx, newy = self.level.intToCoords(space)
            #_hq.heappush(self.eventQueue, (self.gameTime + t * speed, _ge.GoEvent(self.playerName, newx, newy)))
            self.setEvent(t * speed + 0.125, _ge.TakeEvent(thing))
        return
        
    def drop(self, args):
        """drop [the] item"""
        if args[0] == 'the':
            args.pop(0)
        if args[0] in self.playerInv:
            self.setEvent(0.0, _ge.DropEvent(self.playerInv[args[0]]))
        else:
            print('{0} do not have a {1}.'.format(self.playerName, args[0]), file = self.outstream)
        
    def loadMap(self, args):
        # loadMap (fileName)
        # loadMap (fileName, entrance)
        # loadMap (fileName, x, y)
        # save persistent things in previous level
        if self.level != None:
            if self.level.name not in self.persist:
                self.persist[self.level.name] = {}
            for i in self.level.persistent:
                self.persist[self.level.name][i] = self.level.getThingByName(i)
        
        preLoaded = False
        if args[0] in self.persist:
            preLoaded = True
        
        # load the new level
        if len(args) == 2:
            self.level, self.nextThing = _gm.GameMap.read(args[0], int(args[1]), preLoaded, self.nextThing)
        else:
            self.level, self.nextThing = _gm.GameMap.read(args[0], None, preLoaded, self.nextThing)
        
        # get persistent things from it
        if args[0] in self.persist:
            persistedThings = tuple(self.persist[args[0]].keys())
            for i in persistedThings:
                self.level.addThing(self.persist[args[0]][i], True)
                del self.persist[args[0]][i] # delete them from the persist dict to prevent item duplication
        
        print(self.level.openingText, file = self.outstream)
        #print(self.outstream.getvalue())
        if len(args) <= 2:
            self.playerx, self.playery = self.level.playerStart
        else:
            self.playerx, self.playery = int(args[1]), int(args[2])
        self.prevx, self.prevy = self.playerx, self.playery
        if self.onLevelLoad != None:
            self.onLevelLoad()
            
    def saveGame(self, args):
        if len(args) < 1:
            print("Save file must have a name!", file = self.outstream)
            return
        
        # choose pickle protocol depending on python version:
        # 3 for Python 3.0.0 to 3.3.x, 4 for Python 3.4.0 to 3.7.x
        prot = _pi.HIGHEST_PROTOCOL
        
        # save persistent things so that the current level can be recalled as-is
        if self.level != None:
            if self.level.name not in self.persist:
                self.persist[self.level.name] = {}
            for i in self.level.persistent:
                self.persist[self.level.name][i] = self.level.getThingByName(i)
                
        # build data object to be saved
        data = (self.playerName, self.playerx, self.playery, self.playerInv, self.level.name, self.persist, self.eventQueue, self.gameTime, self.nextThing)
        
        # save it!
        fileName = 'saves/' + args[0].replace(' ', '_') + '.dat'
        if args[0].endswith('.dat'): # This is really for absolute paths, but doesn't really check for that.
            fileName = args[0]
        with open(fileName, 'wb') as f:
            _pi.dump(data, f, protocol=prot)
        
        # delete things in the current map from the persist dict to prevent item duplication
        persistedThings = tuple(self.persist[self.level.name].keys())
        for i in persistedThings:
            del self.persist[self.level.name][i]
            
        # push a no-op event so that saving doesn't cost player characters time
        #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
        return
        
    def loadGame(self, args):
        if len(args) < 1:
            print("Save file must have a name!", file = self.outstream)
            return
        
        # choose pickle protocol depending on python version:
        # 3 for Python 3.0.0 to 3.3.x, 4 for Python 3.4.0 to 3.7.x
        prot = _pi.HIGHEST_PROTOCOL
        fileName = 'saves/' + args[0].replace(' ', '_') + '.dat'
        if args[0].endswith('.dat'):
            fileName = args[0]
        x, y, levelname = 1, 1, 'testing/test1.txt'
        with open(fileName, 'rb') as f:
            self.playerName, x, y, self.playerInv, levelname, self.persist, self.eventQueue, self.gameTime, self.nextThing = _pi.load(f)
            #print(levelname, x, y, file = self.outstream)
        self.loadMap((levelname, x, y))
        #_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
        return
        
    def gameEventLoop(self):
        #print(self.skipLoop)
        if self.skipLoop:
            return
        #print(self.skipLoop)
        while len(self.eventQueue) > 0:
            ev = _hq.heappop(self.eventQueue)
            self.gameTime = ev[0]
            e = ev[1]
            if self.__gameEvents[e.eventType](e):
                #print('break loop')
                break
        if len(self.eventQueue) == 0:
            self.gameTime = 0.0
            _ge.resetEventNum()
        self.skipLoop = True
            
    def setEvent(self, t, e, skip = False):
        _hq.heappush(self.eventQueue, (self.gameTime + t, e))
        self.skipLoop = skip
    
    # default event handlers
    
    def handleNoOp(self, e):
        return True
            
    def handleGo(self, e):
        if e.actor == self.playerName:
            self.prevx, self.prevy = self.playerx, self.playery
            self.playerx, self.playery = e.x, e.y
        else:
            self.level.moveThing(e.actor, e.x, e.y)
        return False
                
    def handleArrive(self, e):
        if e.actor == self.playerName:
            self.prevx, self.prevy = self.playerx, self.playery
            self.playerx, self.playery = e.x, e.y
            print('{0} arrived at {1}{2} after {3:.1f} seconds.'.format(self.playerName, self.numberToLetter(e.x), e.y, e.t), file = self.outstream)
            thing = self.level.getThingAtCoords(self.playerx, self.playery)
            if thing:
                if thing.thingType == 'x':
                    a = self.requestInput('Do you want to go {0}? (Y/n)'.format(str(thing)))
                    if a != 'n' and a != 'N':
                        self.loadMap((thing.destination, thing.exitid))
            return True
        else:
            actor = self.level.getThingByName(e.actor)
            if actor:
                self.level.moveThing(e.actor, e.x, e.y)
                print('{0} arrived at {1}{2} after {3:.1f} seconds.'.format(actor.name, self.numberToLetter(e.x), e.y, e.t), file = self.outstream)
                thing = self.level.getThingAtCoords(actor.x, actor.y)
                if thing and thing != actor:
                    if thing.thingType == 'x':
                        print('{0} went {1}.'.format(actor.name, str(thing)))
                        self.level.removeThing(actor.name)
            else:
                print('There is nothing by the name of {0}.'.format(e.actor), file = self.outstream)
            return False
            
    def handleUse(self, e):
        if e.thing.useFunc == '':
            print('The {0} cannot be used by itself.'.format(e.thing.name), file = self.outstream)
            return True
        self.setEvent(self.__useFuncs[e.thing.useFunc](e.thing), _ge.NoOpEvent())
        return False
        
    def handleUseOn(self, e):
        if e.item.useOnFunc == '':
            print('The {0} cannot be used on other objects.'.format(e.item.name), file = self.outstream)
            return True
        self.setEvent(self.__useFuncs[e.item.useOnFunc](e.item, e.thing), _ge.NoOpEvent())
        return False
        
    def handleTake(self, e):
        self.level.removeThing(e.item.name)
        self.playerInv[e.item.name] = e.item
        return True
        
    def handleDrop(self, e):
        e.item.x = self.playerx
        e.item.y = self.playery
        self.level.addThing(e.item, True)
        del self.playerInv[e.item.name]
        return True
            
    # default useFuncs: take a list of arguments, return the time the use took
    
    def examine(self, thing):
        """Just prints the given text."""
        if 'pattern' not in thing.customValues or 'text' not in thing.customValues:
            raise ValueError("Non-examinable thing {0} examined.".format(thing.name))
            
        if thing.customValues['pattern'] == 'single':
            print(self.justifyText(thing.customValues['text']), file = self.outstream)
        elif thing.customValues['pattern'] == 'loop':
            if not 'cursor' in thing.customValues:
                thing.customValues['cursor'] = 0
            cursor = thing.customValues['cursor']
            print(self.justifyText(thing.customValues['text'][cursor]), file = self.outstream)
            thing.customValues['cursor'] = (cursor + 1) % len(thing.customValues['text'])
        elif thing.customValues['pattern'] == 'once':
            if not 'cursor' in thing.customValues:
                thing.customValues['cursor'] = 0
            cursor = thing.customValues['cursor']
            print(self.justifyText(thing.customValues['text'][cursor]), file = self.outstream)
            if cursor < len(thing.customValues['text']) - 1:
                thing.customValues['cursor'] += 1
        elif thing.customValues['pattern'] == 'random':
            cursor = _ra.randrange(len(thing.customValues['text']))
            print(self.justifyText(thing.customValues['text'][cursor]), file = self.outstream)
            thing.customValues['cursor'] = cursor
            
        if 'set' in thing.customValues:
            if 'cursor' in thing.customValues:
                self.customVals[thing.customValues['set']] = thing.customValues[cursor]
            else:
                self.customVals[thing.customValues['set']] = 0
        return 0.0
        
    def container(self, thing):
        """Acts as a container. Items can be traded between the container and the player's inventory."""
        items = list(thing.customValues['items'])
        self.playerInv, thing.customValues['items'], timeOpen = self.getIO('container')(self.playerInv, items)
        return timeOpen
        
    def key(self, item, thing):
        """Item is a key, which unlocks a door. This may be implemented for containers later."""
        if isinstance(thing, tuple) or thing.thingType != 'd':
            print("That is not a door.", file = self.outstream)
            return 0.0
        if thing.lock(item.name):
            print("The key fits the lock.", file = self.outstream)
            if not thing.passable and self.playerx == thing.x and self.playery == thing.y:
                self.playerx, self.playery = self.prevx, self.prevy
        else:
            print("The key doesn't fit that lock.", file = self.outstream)
        return 0.125
            
    # stuff for extended classes to use
    def registerUseFunc(self, name, func):
        """Registers a function for use by things in the map, but not directly
callable by the player."""
        self.__useFuncs[name] = func
        
    def registerEvent(self, name, func):
        """Registers a function to handle an event in the event loop.
They should take the event as an argument, and return True if it should
always give the player a turn, False otherwise."""
        self.__gameEvents[name] = func
        
    def registerIO(self, name, func):
        """Registers a function for useFuncs and such to use."""
        self.__IOCalls[name] = func
        
    def getIO(self, name):
        """This is so derived classes can access their IOCalls."""
        return self.__IOCalls[name]