Video Games

from pygame import Surface
from pygame.image import load

from esp_hadouken.pgfw.GameChild import GameChild

class Background(Surface, GameChild):

    def __init__(self, parent):
        GameChild.__init__(self, parent)
        self.display_surface = self.get_screen()
        self.init_surface()
        self.load_tile()
        self.draw_tiles()

    def init_surface(self):
        Surface.__init__(self, self.display_surface.get_size())

    def load_tile(self):
        self.tile = load(self.get_resource("overworld",
                                           "background-tile-path")).convert()

    def draw_tiles(self):
        tile = self.tile
        width = tile.get_width()
        x_limit, y_limit = self.get_size()
        x, y = 0, 0
        for y in xrange(0, y_limit, width):
            for x in xrange(0, x_limit, width):
                self.blit(tile, (x, y))

    def update(self):
        self.display_surface.blit(self, (0, 0))

from pygame import Surface, Rect
from pygame.image import load

from esp_hadouken.pgfw.GameChild import GameChild

class Section(Surface, GameChild):

    def __init__(self, parent, left=True):
        GameChild.__init__(self, parent)
        Surface.__init__(self, self.parent.size)
        self.left = left
        self.display_surface = self.get_display_surface()
        self.rect = self.get_rect()
        self.draw_tiles()
        self.fill_borders()
        self.place()

    def draw_tiles(self):
        tile = self.parent.tile
        x_limit, y_limit = self.get_size()
        width = tile.get_width()
        for y in xrange(0, y_limit, width):
            for x in xrange(0, x_limit, width):
                self.blit(tile, (x, y))

    def place(self):
        rect = self.rect
        rect.top = self.parent.top
        if not self.left:
            rect.right = self.display_surface.get_rect().right

    def fill_borders(self):
        reference = self.rect
        top_rect = Rect(reference.topleft, (reference.w, 1))
        bottom_rect = Rect((0, 0), (reference.w, 1))
        bottom_rect.bottom = reference.bottom
        side_rect = Rect((0, 0), (1, reference.h))
        if self.left:
            side_rect.right = reference.right
        color = self.parent.border
        self.fill(color, top_rect)
        self.fill(color, bottom_rect)
        self.fill(color, side_rect)

    def update(self):
        self.display_surface.blit(self, self.rect)

from pygame import Surface
from pygame.image import load

from esp_hadouken.pgfw.GameChild import GameChild
from esp_hadouken.overworld.wall.Section import Section

class Wall(Surface, GameChild):

    def __init__(self, parent):
        GameChild.__init__(self, parent)
        self.load_configuration()
        self.load_tile()
        self.set_sections()
        # 224x25 gap: 52

    def load_configuration(self):
        config = self.get_configuration("overworld")
        self.size = config["wall-size"]
        self.top = config["wall-position"]
        self.border = config["wall-border"]

    def load_tile(self):
        self.tile = load(self.get_resource("overworld",
                                           "wall-tile-path")).convert()

    def set_sections(self):
        self.sections = [Section(self, left) for left in False, True]

    def update(self):
        for section in self.sections:
            section.update()

from random import choice

from pygame import PixelArray, Color
from pygame.image import load

from esp_hadouken.pgfw.Sprite import Sprite
from esp_hadouken.dot.engine.Engine import Engine

class Dot(Sprite):

    def __init__(self, parent):
        Sprite.__init__(self, parent)
        self.engine = Engine(self)
        self.delegate = self.get_delegate()
        self.load_configuration()
        self.load_image()
        self.load_palette()
        self.add_frames()
        self.reset()
        self.subscribe(self.respond)

    def load_configuration(self):
        config = self.get_configuration("dot")
        self.framerate_range = config["framerate-range"]
        self.transparent_color = config["transparent-color"]
        self.frame_count = config["frame-count"]

    def load_image(self):
        image = load(self.get_resource("dot", "image-path")).convert()
        image.set_colorkey(self.transparent_color)
        self.image = image

    def load_palette(self):
        config = self.get_configuration("sprite")
        self.palette = [map(Color, palette) for palette in
                        config["dark-palette"], config["light-palette"]]

    def add_frames(self):
        for ii in xrange(self.frame_count):
            surface = self.image.copy()
            self.paint_frame(surface)
            self.add_frame(surface)

    def paint_frame(self, surface):
        pixels = PixelArray(surface)
        dark, light = map(choice, self.palette)
        pixels.replace((255, 255, 255), light)
        pixels.replace((0, 0, 0), dark)

    def reset(self):
        self.set_framerate(self.framerate_range[1])
        self.engine.reset()

    def respond(self, event):
        if self.delegate.compare(event, "reset-game"):
            self.reset()

    def is_active(self):
        return self.parent.active

    def update(self):
        if self.is_active():
            self.engine.update()
            self.move(*self.engine)
            Sprite.update(self)

from pygame.font import Font

from esp_hadouken.pgfw.GameChild import GameChild
from esp_hadouken.pgfw.Vector import Vector
from esp_hadouken.dot.engine.accelerator.Accelerator import Accelerator
from esp_hadouken.dot.engine.Calibrator import Calibrator
from esp_hadouken.dot.engine.Profile import Profile

class Engine(GameChild, Vector):

    def __init__(self, parent):
        GameChild.__init__(self, parent)
        self.input = self.get_input()
        self.display_surface = self.get_screen()
        self.load_configuration()
        self.display_active = self.check_command_line(self.display_flag)
        self.calibration_active = self.check_command_line(self.calibrate_flag)
        self.accelerator = Accelerator(self)
        self.profile = Profile(self)
        self.accelerator.set_slopes()
        self.add_calibrator()
        self.reset()
        self.init_display()

    def load_configuration(self):
        config = self.get_configuration("engine")
        self.display_flag = config["display-flag"]
        self.calibrate_flag = config["calibrate-flag"]
        self.initial_profile = config["initial-profile"]
        self.font_path = self.get_resource("engine", "font-path")

    def add_calibrator(self):
        if self.calibration_active:
            self.calibrator = Calibrator(self)

    def reset(self):
        Vector.__init__(self)
        self.accelerator.reset()

    def init_display(self):
        if self.display_active:
            self.display_surface = self.get_screen()
            self.font = Font(self.font_path, 14)
            self.render()

    def render(self):
        string = str(self)
        self.text = self.font.render(string, False, (0, 0, 0), (255, 255, 255))
        self.string = string

    def set(self, max_velocity, deceleration):
        self.max_velocity = max_velocity
        self.deceleration = deceleration

    def update(self):
        if self.calibration_active:
            self.calibrator.update()
        self.accelerator.update()
        self.apply_accelerator()
        self.constrain()
        self.decelerate()
        self.display()

    def apply_accelerator(self):
        self += self.accelerator.get_sum()

    def constrain(self):
        self.apply_to_components(self.constrain_component)

    def constrain_component(self, magnitude):
        if magnitude > self.max_velocity:
            return self.max_velocity
        if magnitude < -self.max_velocity:
            return -self.max_velocity
        return magnitude

    def decelerate(self):
        self.apply_to_components(self.decelerate_component)

    def decelerate_component(self, magnitude):
        deceleration = self.deceleration
        if abs(magnitude) < deceleration:
            magnitude = 0
        else:
            if magnitude > 0:
                magnitude -= deceleration
            else:
                magnitude += deceleration
        return magnitude

    def display(self):
        if self.display_active:
            if self.string != str(self):
                self.render()
            self.display_surface.blit(self.text, (0, 0))

    def __str__(self):
        return "[{0: .2f}, {1: .2f}]".format(*self)

216.73.216.144

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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