from GameChild import GameChild

class Animation(GameChild):

    def __init__(self, parent, method=None, interval=None, unfiltered=False):
        GameChild.__init__(self, parent)
        self.unfiltered = unfiltered
        self.default_method = method or self.build_frame
        self.accounts = {}
        self.register(self.default_method, interval=interval)
        self.current_elapsed = 0
        self.last_update = 0

    def build_frame(self):
        pass

    def register(self, *args, **kwargs):
        interval = None
        if kwargs.has_key("interval"):
            interval = kwargs["interval"]
        for method in args:
            if method not in self.accounts:
                self.accounts[method] = Account(interval, self)
            else:
                self.accounts[method].set_interval(interval)

    def play(self, method=None, interval=None, delay=0, play_once=False,
             **kwargs):
        account = self.accounts[self.get_default(method)]
        account.set_delay(delay)
        account.set_args(kwargs)
        account.set_play_once(play_once)
        if interval:
            account.set_interval(interval)
        account.play()

    def get_default(self, method=None):
        if not method:
            method = self.default_method
        return method

    def halt(self, method=None):
        if not method:
            for account in self.accounts.values():
                account.halt()
        else:
            if self.accounts.has_key(method):
                self.accounts[method].halt()

    def is_playing(self, method=None, check_all=False, include_delay=False):
        if check_all:
            return any(self.is_account_playing(account, include_delay) for \
                       method, account in self.accounts.iteritems())
        return self.is_account_playing(self.accounts[self.get_default(method)],
                                       include_delay)

    def is_account_playing(self, account, include_delay):
        return account.playing and (not include_delay or not account.delay)

    def reset_timer(self, method):
        if not method:
            for account in self.accounts.values():
                account.reset_timer()
        else:
            self.accounts[method].reset_timer()

    def update(self):
        for method, account in self.accounts.iteritems():
            if account.update():
                method(**account.args)


class Account:

    def __init__(self, interval, animation):
        self.animation = animation
        self.time_filter = animation.get_game().time_filter
        self.set_interval(interval)
        self.set_delay(0)
        self.set_play_once(False)
        self.interval_index = 0
        self.last_frame = 0
        self.halt()

    def set_interval(self, interval):
        if isinstance(interval, int) or isinstance(interval, str):
            interval = [interval]
        self.interval = interval

    def set_delay(self, delay):
        self.delay = delay

    def set_play_once(self, play_once):
        self.play_once = play_once

    def set_args(self, args):
        self.args = args

    def play(self):
        self.playing = True

    def halt(self):
        self.last_update = None
        self.playing = False

    def update(self):
        if self.playing:
            if self.animation.unfiltered:
                ticks = self.time_filter.get_unfiltered_ticks()
            else:
                ticks = self.time_filter.get_ticks()
            self.update_delay(ticks)
            if not self.delay:
                interval = self.interval
                if interval:
                    if ticks - self.last_frame < self.get_current_interval():
                        return False
                    self.last_frame = ticks
                    self.increment_interval_index()
                if self.play_once:
                    self.halt()
                return True

    def get_current_interval(self):
        return self.interval[self.interval_index]

    def increment_interval_index(self, increment=1):
        index = self.interval_index + increment
        while index >= len(self.interval):
            index -= len(self.interval)
        self.interval_index = index

    def reset_interval(self):
        self.interval_index = 0

    def reset_timer(self):
        if self.animation.unfiltered:
            ticks = self.time_filter.get_unfiltered_ticks()
        else:
            ticks = self.time_filter.get_ticks()
        self.last_frame = ticks

    def update_delay(self, ticks):
        delay = self.delay
        if delay > 0:
            last_update = self.last_update or ticks
            delay -= ticks - last_update
            if delay < 0:
                delay = 0
        self.last_update = ticks
        self.delay = delay
from pygame.event import get, pump, Event, post
from pygame.locals import *

from GameChild import GameChild
from Input import Input

class Delegate(GameChild):

    def __init__(self, game):
        GameChild.__init__(self, game)
        self.subscribers = dict()
        self.load_configuration()
        self.disable()

    def load_configuration(self):
        config = self.get_configuration("event")
        self.cancel_flag_key = config["cancel-flag-key"]
        self.command_key = config["command-key"]
        self.command_event_id = config["command-id-offset"] + \
                                globals()[config["user-event-id"]]

    def disable(self):
        self.enabled = False

    def enable(self):
        self.enabled = True
        self.interpolator = self.get_game().interpolator

    def dispatch(self):
        if self.enabled:
            subscribers = self.subscribers
            for evt in get():
                kind = evt.type
                if kind in subscribers:
                    for subscriber in subscribers[kind]:
                        if not self.interpolator.is_gui_active() or \
                               hasattr(subscriber, "im_class") and \
                               (subscriber.im_class == Input or \
                                subscriber.im_class == \
                                self.interpolator.gui.__class__):
                            self.print_debug("Passing %s to %s" % (evt,
                                                                   subscriber))
                            subscriber(evt)
        else:
            pump()

    def add_subscriber(self, callback, kind=None):
        self.print_debug("Subscribing %s to %s" % (callback, kind))
        if kind is None:
            kind = self.command_event_id
        subscribers = self.subscribers
        if kind not in subscribers:
            subscribers[kind] = list()
        subscribers[kind].append(callback)

    def is_command(self, event):
        return event.type == self.command_event_id

    def remove_subscriber(self, callback, kind=None):
        if kind is None:
            kind = self.command_event_id
        self.subscribers[kind].remove(callback)

    def compare(self, evt, commands=None, cancel=False, **attributes):
        if evt.type == self.command_event_id:
            self.add_cancel_flag_to_attributes(attributes, cancel)
        if commands is not None and not isinstance(commands, list):
            commands = [commands]
        if commands is not None:
            if not self.command_in_list(evt, commands):
                return False
        return all(key in evt.dict and evt.dict[key] == value for \
                   key, value in attributes.iteritems())

    def add_cancel_flag_to_attributes(self, attributes, cancel):
        attributes[self.cancel_flag_key] = cancel

    def command_in_list(self, evt, commands):
        return self.get_command_attribute(evt) in commands

    def get_command_attribute(self, evt):
        return evt.dict[self.command_key]

    def post(self, command=None, cancel=False, **attributes):
        attributes[self.command_key] = command
        self.add_cancel_flag_to_attributes(attributes, cancel)
        post(Event(self.command_event_id, attributes))
54.91.121.255
54.91.121.255
54.91.121.255
 
June 29, 2013

A few weeks ago, for Fishing Jam, I made a fishing simulation from what was originally designed to be a time attack arcade game. In the program, Dark Stew, the player controls Aphids, an anthropod who fishes for aquatic creatures living in nine pools of black water.



Fishing means waiting by the pool with the line in. The longer you wait before pulling the line out, the more likely a creature will appear. Aside from walking, it's the only interaction in the game. The creatures are drawings of things you maybe could find underwater in a dream.

The background music is a mix of clips from licensed to share songs on the Free Music Archive. Particularly, Seed64 is an album I used a lot of songs from. The full list of music credits is in the game's README file.

I'm still planning to use the original design in a future version. There would be a reaction-based mini game for catching fish, and the goal would be to catch as many fish as possible within the time limit. I also want to add details and obstacles to the background, which is now a little boring, being a plain, tiled, white floor.

If you want to look at all the drawings or hear the music in the context of the program, there are Windows and source versions available. The source should work on any system with Python and Pygame. If it doesn't, bug reports are much appreciated. Comments are also welcome :)

Dark Stew: Windows, Pygame Source

I wrote in my last post that I would be working on an old prototype about searching a cloud for organisms for Fishing Jam. I decided to wait a while before developing that game, tentatively titled Xenographic Barrier. Its main interactive element is a first-person scope/flashlight, so I'd like to make a Wii version of it.

I'm about to start working on a complete version of Ball & Cup. If I make anything interesting for it, I'll post something. There are a lot of other things I want to write about, like game analyses, my new GP2X and arcades in Korea, and there's still music to release. Lots of fun stuff coming!


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