Video Games

from collections import deque
from math import ceil

from pygame import Surface
from pygame.draw import polygon
from pygame.locals import *

from _send.pgfw.Sprite import Sprite

class Arrow(Sprite):

    LEFT, RIGHT = (-1, 1)

    def __init__(self, parent, size, hue, saturation, overlap, count,
                 orientation):
        Sprite.__init__(self, parent)
        self.load_configuration()
        self.size = size
        self.hue = hue
        self.saturation = saturation
        self.overlap = overlap
        self.count = count
        self.orientation = orientation
        self.set_mask()
        self.set_hues()
        self.set_frames()

    def load_configuration(self):
        config = self.get_configuration("arrow")
        self.frame_count = config["frame-count"]

    def set_mask(self):
        surface = Surface(self.get_size())
        surface.set_colorkey((0, 0, 0))
        rect = surface.get_rect()
        width = self.size[0]
        x = 0
        for ii in xrange(self.count):
            if self.orientation == self.LEFT:
                points = (x, rect.centery), (x + width, 0),\
                         (x + width, rect.bottom)
            else:
                points = (x, 0), (x + width, rect.centery), (x, rect.bottom)
            polygon(surface, (255, 255, 255), points)
            x += width - self.overlap
        self.mask = surface

    def get_size(self):
        count = self.count
        return self.size[0] * count - self.overlap * (count - 1), self.size[1]

    def set_hues(self):
        start, end = self.hue
        step = float(end - start) / (self.frame_count - 1)
        hues = deque([start])
        while start < end:
            start += step
            hues.append(start)
        hues.append(end)
        self.hues = hues

    def set_frames(self):
        for _ in xrange(self.frame_count):
            self.append_frame()

    def append_frame(self):
        width, height = self.get_size()
        gradient = Surface((width, height))
        gradient.set_colorkey((0, 0, 0))
        hues = self.hues
        step = float(width) / self.count / len(hues)
        x = 0
        color = Color(0, 0, 0)
        while x < width:
            for hue in hues:
                color.hsla = hue, self.saturation, 50, 100
                gradient.fill(color, (int(x), 0, ceil(step), height))
                x += step
        hues.rotate(self.orientation)
        mask = self.mask.convert()
        gradient.blit(mask, (0, 0), None, BLEND_RGBA_MIN)
        self.add_frame(gradient)

from pygame.key import get_mods
from pygame.locals import *

from _send.pgfw.GameChild import GameChild

class Editor(GameChild):

    def __init__(self, parent):
        GameChild.__init__(self, parent)
        self.fields = self.get_game().fields
        self.subscribe(self.respond_to_key, KEYDOWN)

    def respond_to_key(self, event):
        key = event.key
        fields = self.fields
        field = fields.get_current_field()
        mods = get_mods()
        step = self.get_step(mods)
        if key == K_h:
            self.adjust_color(field, (step, 0, 0), mods)
        elif key == K_s:
            self.adjust_color(field, (0, step, 0), mods)
        elif key == K_l:
            self.adjust_color(field, (0, 0, step), mods)
        elif key == K_BACKQUOTE:
            pass
        elif key == K_EQUALS:
            fields.write()
        elif key == K_b:
            pass
        elif key == K_c:
            pass
        elif key == K_t:
            pass
        elif key == K_RIGHTBRACKET:
            fields.load()
        elif key == K_LEFTBRACKET:
            fields.load(previous=True)
        elif key == K_w:
            fields.write()

    def get_step(self, mods):
        sign = -1 if self.alt_pressed(mods) else 1
        return 1 * sign if self.ctrl_pressed(mods) else 10 * sign

    def alt_pressed(self, mods):
        return mods & KMOD_ALT

    def ctrl_pressed(self, mods):
        return mods & KMOD_CTRL

    def adjust_color(self, field, channels, mods):
        if self.shift_pressed(mods):
            field.adjust_color(field.foreground_id, *channels)
        else:
            field.adjust_color(field.background_id, *channels)

    def shift_pressed(self, mods):
        return mods & KMOD_SHIFT

from pygame import Surface, Color
from pygame.font import Font
from pygame.locals import *

from _send.pgfw.Animation import Animation
from _send.pgfw.Sprite import Sprite
from _send.field.ball.Ball import Ball
from _send.field.Cup import Cup

class Field(Animation):

    background_id, foreground_id = 0, 1

    def __init__(self, parent, name, ball_scale, cup_scale, speed,
                 tartan_scale, background_color, foreground_color):
        Animation.__init__(self, parent)
        self.name = name
        self.ball_scale = ball_scale
        self.cup_scale = cup_scale
        self.speed = speed
        self.tartan_scale = tartan_scale
        self.colors = background_color, foreground_color
        self.title = Title(self)
        self.register(self.deactivate_title)

    def load(self, suppress_title=False):
        self.halt()
        if not suppress_title:
            self.title.unhide()
            self.play(self.deactivate_title, delay=5000)
        self.display_surface = self.get_display_surface()
        self.set_background()
        self.set_ball()
        self.set_cup()

    def deactivate_title(self):
        self.title.hide()

    def set_background(self):
        self.background = Surface(self.display_surface.get_size())
        self.paint_background()

    def paint_background(self):
        self.background.fill(self.get_background_color())

    def get_background_color(self):
        return self.colors[self.background_id]

    def set_ball(self):
        self.ball = Ball(self)

    def set_cup(self):
        self.cup = Cup(self)

    def __str__(self):
        br, bg, bb, ba = self.get_background_color()
        fr, fg, fb, fa = self.get_foreground_color()
        return "%s | %.3f %.3f %.3f %.3f | %i, %i, %i | %i, %i, %i" % \
               (self.name, self.ball_scale, self.cup_scale, self.speed,
                self.tartan_scale, br, bg, bb, fr, fg, fb)

    def get_foreground_color(self):
        return self.colors[self.foreground_id]

    def adjust_color(self, index, dh, ds, dl):
        colors = self.colors
        hue, saturation, lightness, alpha = colors[index].hsla
        hue, saturation, lightness = hue + dh, saturation + ds, lightness + dl
        constrain = self.constrain_channel
        hue = constrain(hue, 360)
        saturation = constrain(saturation, 100)
        lightness = constrain(lightness, 100)
        colors[index].hsla = hue, saturation, lightness, alpha
        self.paint_background()
        self.ball.set_color()
        self.cup.set_color()

    def constrain_channel(self, channel, limit):
        if channel < 0:
            channel = 0
        elif channel > limit:
            channel = limit
        return channel

    def unload(self):
        del self.display_surface
        del self.ball
        del self.cup
        del self.background

    def update(self):
        Animation.update(self)
        self.clear()
        self.title.update()
        self.cup.update()
        self.ball.update()

    def clear(self, rect=None):
        if rect is None:
            rect = self.background.get_rect()
        self.display_surface.blit(self.background, rect)


class Title(Sprite):

    def __init__(self, parent):
        Sprite.__init__(self, parent)
        color = Color(0, 0, 0)
        font = Font(self.get_resource("display", "font-path"), 14)
        font.set_bold(True)
        font.set_italic(True)
        name = parent.name.upper()
        shadow = font.render(name, True, parent.get_background_color())
        mask = font.render(name, True, parent.get_foreground_color())
        base = Surface((shadow.get_width() + 5, shadow.get_height() + 1),
                       SRCALPHA)
        for ii, lightness in enumerate(xrange(0, 100, 5)):
            color.hsla = 60, 100, lightness, 100
            frame = base.copy()
            for x in xrange(0, frame.get_width(), 2):
                frame.set_at((x, frame.get_height() - 1),
                             self.get_dot_color(x, ii))
            for y in xrange(0, frame.get_height(), 2):
                frame.set_at((frame.get_width() - 1, y),
                             self.get_dot_color(y, ii))
            frame.blit(shadow, (0, 0))
            frame.blit(mask, (2, 0))
            text = font.render(name, True, color)
            frame.blit(text, (4, 0))
            self.add_frame(frame)
        self.location.topleft = parent.parent.sidelines[0].bottomleft

    def get_dot_color(self, a, b):
        return Color(*((0, 0, 0), (255, 255, 255))[((a / 2) % 2 + (b % 2)) % 2])

216.73.216.124

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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