Video Games

from math import pi, sin, cos

from pygame.font import Font

from esp_hadouken.pgfw.GameChild import GameChild
from esp_hadouken.pgfw.Vector import Vector

class Pedal(GameChild, Vector):

    def __init__(self, parent, index):
        GameChild.__init__(self, parent)
        self.effect = 0
        self.index = index
        self.display_active = self.check_command_line(self.parent.display_flag)
        self.reset()
        self.init_display()
        self.set_coefficients()

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

    def init_display(self):
        if self.display_active:
            self.display_surface = self.get_screen()
            self.coordinates = 0, (self.index + 1) * 20
            self.font = Font(self.parent.parent.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_coefficients(self):
        index = self.index
        cx = sin(pi * index / 4)
        cy = -cos(pi * index / 4)
        if cx < .000000001 and cx > -.0000000001:
            cx = 0
        if cy < .000000001 and cy > -.0000000001:
            cy = 0
        self.cx, self.cy = cx, cy

    def set_slopes(self):
        min_na_dist = self.parent.min_negative_acceleration_distance
        min_na = self.parent.min_negative_acceleration
        max_v = self.parent.parent.max_velocity
        initial_thrust = self.parent.initial_thrust
        peak_distance = self.parent.peak_distance
        peak_acceleration = self.parent.peak_acceleration
        self.tail_slope = (min_na - self.parent.max_negative_acceleration) / \
                          (-min_na_dist + max_v)
        self.rest_slope = (initial_thrust - min_na) / min_na_dist
        self.motion_slope = (peak_acceleration - initial_thrust) / peak_distance
        self.head_slope = -peak_acceleration / (max_v - peak_distance)

    def update(self, active):
        self.update_effect(active)
        self.set()
        self.display()

    def update_effect(self, active):
        if active:
            self.effect += self.parent.attack
        elif not active:
            self.effect -= self.parent.release
        self.constrain()

    def constrain(self):
        effect = self.effect
        if effect < 0 or effect > 1:
            if effect < 0:
                effect = 0
            else:
                effect = 1
            self.effect = effect

    def set(self):
        if self.effect:
            vx, vy = self.parent.parent
            cx, cy = self.cx, self.cy
            self.x = self.get_component(vx, cx)
            self.y = self.get_component(vy, cy)
        else:
            self.x = 0
            self.y = 0

    def get_component(self, velocity, coefficient):
        if coefficient < 0:
            velocity = -velocity
        max_v = self.parent.parent.max_velocity
        if not coefficient or velocity >= max_v:
            return 0
        if velocity <= -max_v:
            magnitude = -self.parent.max_negative_acceleration
        elif velocity <= -self.parent.min_negative_acceleration_distance:
            magnitude = self.tail_thrust(velocity)
        elif velocity <= 0:
            magnitude = self.rest_thrust(velocity)
        elif velocity <= self.parent.peak_distance:
            magnitude = self.motion_thrust(velocity)
        else:
            magnitude = self.head_thrust(velocity)
        return coefficient * self.effect * magnitude

    def are_same_sign(self, left, right):
        return left == 0 or right == 0 or abs(left) / left == abs(right) / right

    def tail_thrust(self, velocity):
        return (self.tail_slope * \
                (velocity + self.parent.min_negative_acceleration_distance)) + \
                self.parent.min_negative_acceleration

    def rest_thrust(self, velocity):
        return (self.rest_slope * velocity) + self.parent.initial_thrust

    def motion_thrust(self, velocity):
        return (self.motion_slope * (velocity - self.parent.peak_distance)) + \
               self.parent.peak_acceleration

    def head_thrust(self, velocity):
        return self.head_slope * (velocity - self.parent.parent.max_velocity)

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

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

from pygame import Color

from esp_hadouken.GameChild import *

class GlyphPalette(GameChild, list):

    def __init__(self, parent):
        GameChild.__init__(self, parent)
        list.__init__(self, [])
        self.set_interval_properties()
        self.populate()

    def set_interval_properties(self):
        length = self.get_configuration()["scoreboard-palette-length"]
        interval_count = 6
        self.interval_length = length / interval_count
        self.overflow = length % interval_count

    def populate(self):
        brightness = self.get_configuration()["scoreboard-palette-brightness"]
        self.add_interval([255, brightness, brightness], [0, 1, 0])
        self.add_interval([255, 255, brightness], [-1, 0, 0])
        self.add_interval([brightness, 255, brightness], [0, 0, 1])
        self.add_interval([brightness, 255, 255], [0, -1, 0])
        self.add_interval([brightness, brightness, 255], [1, 0, 0])
        self.add_interval([255, brightness, 255], [0, 0, -1])

    def add_interval(self, components, actions):
        for ii, action in enumerate(actions):
            if action == 1:
                components[ii] = 0
            elif action == -1:
                components[ii] = 255
        length = self.interval_length + (self.overflow > 0)
        self.overflow -= 1
        step = 255 / length
        for ii in range(length):
            self.append(Color(*components))
            for ii, action in enumerate(actions):
                if action == 1:
                    components[ii] += step
                elif action == -1:
                    components[ii] -= step

from pygame import Surface, Color, Rect

from esp_hadouken.GameChild import *
from esp_hadouken.Font import *

class Heading(GameChild, Surface):

    def __init__(self, parent):
        GameChild.__init__(self, parent)
        self.init_surface()
        self.set_rect()
        self.add_labels()
        self.render_title()

    def init_surface(self):
        parent = self.parent
        width = parent.get_width() - parent.get_padding()
        Surface.__init__(self, (width, parent.get_heading_height()))
        self.fill(Color(self.get_configuration()["scoreboard-heading-bg"]))

    def set_rect(self):
        rect = self.get_rect()
        offset = self.parent.get_padding() / 2
        rect.topleft = offset, offset
        self.rect = rect

    def add_labels(self):
        labels = []
        margin = self.get_margin()
        for ii in range(5):
            labels.append(Label(self, ii))
        self.labels = labels

    def render_title(self):
        config = self.get_configuration()
        size = config["scoreboard-heading-title-size"]
        text = config["scoreboard-heading-title"]
        color = Color(config["scoreboard-heading-title-color"])
        rend = Font(self, size).render(text, True, color)
        rect = rend.get_rect()
        offset = config["scoreboard-heading-title-offset"]
        rect.centery = self.get_rect().centery + offset
        rect.left = config["scoreboard-heading-title-indent"]
        self.blit(rend, rect)

    def get_margin(self):
        return self.get_configuration()["scoreboard-heading-margin"]

    def update(self):
        for label in self.labels:
            label.update()
        self.draw()

    def draw(self):
        self.parent.blit(self, self.rect)


class Label(GameChild, Surface):

    def __init__(self, parent, index):
        GameChild.__init__(self, parent)
        self.index = index
        self.init_surface()
        self.set_rect()

    def init_surface(self):
        parent = self.parent
        size = parent.get_height() - parent.get_margin()
        Surface.__init__(self, (size, size))
        self.paint()

    def paint(self):
        palette = self.get_palette()
        count = self.get_configuration()["scoreboard-heading-checker-count"]
        size = tuple([self.get_width() / count] * 2)
        for ii in range(count):
            for jj in range(count):
                rect = Rect((ii * size[0], jj * size[0]), size)
                self.fill(Color(palette[(ii + jj) % len(palette)]), rect)

    def get_palette(self):
        index = self.index
        if index == 0:
            level = "octo"
        elif index == 1:
            level = "horse"
        elif index == 2:
            level = "diortem"
        elif index == 3:
            level = "circulor"
        else:
            level = "tooth"
        return self.get_configuration()[level + "-level-palette"]

    def set_rect(self):
        rect = self.get_rect()
        rect.left = self.calculate_indent()
        rect.centery = self.parent.get_rect().centery
        self.rect = rect

    def calculate_indent(self):
        parent = self.parent
        width = parent.get_width()
        columns = parent.parent.get_column_widths()
        offset = (columns[3] * width - self.get_width()) / 2
        return sum(columns[:self.index + 3]) * width + offset

    def update(self):
        self.draw()

    def draw(self):
        self.parent.blit(self, self.rect)

3.215.182.36

September 13, 2013♦

from array import array
from time import sleep

import pygame
from pygame.mixer import Sound, get_init, pre_init

class Note(Sound):

    def __init__(self, frequency, volume=.1):
        self.frequency = frequency
        Sound.__init__(self, self.build_samples())
        self.set_volume(volume)

    def build_samples(self):
        period = int(round(get_init()[0] / self.frequency))
        samples = array("h", [0] * period)
        amplitude = 2 ** (abs(get_init()[1]) - 1) - 1
        for time in xrange(period):
            if time < period / 2:
                samples[time] = amplitude
            else:
                samples[time] = -amplitude
        return samples

if __name__ == "__main__":
    pre_init(44100, -16, 1, 1024)
    pygame.init()
    Note(440).play(-1)
    sleep(5)

This program generates and plays a 440 Hz tone for 5 seconds. It can be extended to generate the spectrum of notes with a frequency table or the frequency formula. Because the rewards in Send are idealized ocean waves, they can also be represented as tones. Each level has a tone in its goal and a tone based on where the player's disc lands. Both play at the end of a level, sounding harmonic for a close shot and discordant for a near miss. The game can dynamically create these tones using the program as a basis.

I'm also building an algorithmically generated song: Silk Routes (Scissored). Here is an example of how it sounds so far:

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