#!/usr/bin/python

# Rocket Land Launch
# "A gracious spring, turned to blood-ravenous autumn" - Rihaku,
# Lament of the Frontier Guard

from os import environ
from os.path import join
from random import randint, randrange, choice, random, uniform, shuffle
from math import tan, radians, ceil

from pygame import init, Surface, transform, PixelArray
from pygame.time import get_ticks, wait
from pygame.event import get
from pygame.display import set_mode, flip, set_caption
from pygame.mouse import set_visible
from pygame.image import load
from pygame.draw import polygon, aaline, circle
from pygame.locals import *

class Between:

    resolution = (640, 480)
    target_frame_duration = 40

    def __init__(self):
        self.quit_queued = False
        self.duration = 0
        init()
        set_visible(False)
        set_caption("Divine Remains Holds Domain")
        set_caption("Desert of Utility")
        set_caption("Involution")
        self.set_screen()
        self.characters = Characters(self)
        self.title = Title(self)
        self.field = Field(self)
        self.title.activate()
        self.last_ticks = get_ticks()
        self.reset()

    def reset(self):
        self.characters.reset()
        self.title.reset()
        self.field.reset()

    def run(self):
        while True:
            self.maintain_framerate()
            self.dispatch_events()
            if self.quit_queued:
                break
            self.title.update()
            self.field.update()
            flip()

    def maintain_framerate(self):
        while self.duration < self.target_frame_duration:
            wait(2)
            ticks = get_ticks()
            self.duration += ticks - self.last_ticks
            self.last_ticks = ticks
        self.duration -= self.target_frame_duration

    def dispatch_events(self):
        for event in get():
            if event.type == KEYDOWN:
                key = event.key
                if key == K_F11:
                    self.set_screen(True)
                elif key == K_F8:
                    self.reset()
                elif key == K_ESCAPE:
                    self.quit()
                elif self.title.active and key in (K_UP, K_DOWN):
                    self.title.change_character(key == K_UP)
                elif self.title.active and key == K_RETURN:
                    self.title.deactivate()
                    self.field.activate()
                    self.field.start_level()
            elif event.type == QUIT:
                self.quit()

    def set_screen(self, toggle_fullscreen=False):
        flags = 0
        if toggle_fullscreen:
            flags = self.screen.get_flags() ^ FULLSCREEN
        self.screen = set_mode(self.resolution, flags)

    def quit(self):
        self.quit_queued = True


class Child:

    def __init__(self, parent):
        self.parent = parent
        self.set_root()
        self.set_screen()

    def set_root(self):
        node = self.parent
        while not isinstance(node, Between):
            node = node.parent
        self.root = node

    def set_screen(self):
        self.screen = self.root.screen


class Characters(Child, list):

    folder = join("resource", "img", "character")
    paths = "h-Hh", "6oF", "Bag"

    def __init__(self, parent):
        Child.__init__(self, parent)
        list.__init__(self, (Character(self, join(self.folder, path)) for \
                             path in self.paths))

    def reset(self):
        self.current_index = 1
        self.parent.field.jumper.set_surface()

    def shift_index(self, decrease=False):
        step = -1 if decrease else 1
        self.current_index += step
        if self.current_index == len(self):
            self.current_index = 0
        elif self.current_index < 0:
            self.current_index = len(self) - 1
        self.parent.field.jumper.set_surface()

    def get_selected_character(self):
        return self[self.current_index]


class Character(Child):

    def __init__(self, parent, path):
        Child.__init__(self, parent)
        self.mono_surface = load(join(path, "mono.png")).convert_alpha()
        self.large_surface = load(join(path, "large.png")).convert_alpha()
        self.mini_surface = load(join(path, "mini.png")).convert_alpha()

    def is_selected_character(self):
        return self == self.parent.get_selected_character()


class Animation(Child):

    def __init__(self, parent, interval):
        Child.__init__(self, parent)
        self.interval = interval
        self.playing = False

    def play(self):
        self.playing = True
        self.last_ticks = get_ticks()
        self.frame_duration = 0

    def stop(self):
        self.playing = False

    def update(self):
        if self.playing:
            self.frame_duration += get_ticks() - self.last_ticks
            if self.frame_duration >= self.interval:
                self.frame_duration -= self.interval
                self.advance_frame()
            self.last_ticks = get_ticks()


class Title(Animation):

    color_components = (0, 80, 70), (0, 60, 60), (0, 90, 80)
    interval_range = 0, 120
    interval_change_rate = .005
    indicator_colors = (Color(*components) for components in \
                        ((255, 255, 0), (255, 0, 255), (0, 255, 255),
                         (255, 192, 87)))

    def __init__(self, parent):
        Animation.__init__(self, parent, self.interval_range[0])
        self.background_index = 0
        self.set_backgrounds()
        rects = self.character_rects = []
        characters = self.parent.characters
        for ii, character in enumerate(characters):
            rect = character.large_surface.get_rect()
            rect.center = self.screen.get_width() / 2, \
                          int(float(ii + 1) / (len(characters) + 1) * \
                              self.screen.get_height())
            rects.append(rect)
        indicator_surfaces = self.indicator_surfaces = []
        rect = self.indicator_rect = Rect(self.screen.get_width() / 3, 0, 22,
                                          23)
        for color in self.indicator_colors:
            surface = Surface(rect.size)
            surface.set_colorkey((0, 0, 0))
            polygon(surface, color, ((0, 0), (rect.w - 1, rect.h / 2 - 1),
                                     (0, rect.h - 1)))
            indicator_surfaces.append(surface)
        self.indicator_surfaces_index = 0

    def set_backgrounds(self):
        backgrounds = self.backgrounds = []
        tiles = []
        size = 4
        colors = []
        for h, s, l in self.color_components:
            color = Color(0, 0, 0)
            color.hsla = h, s, l, 100
            colors.append(color)
        for ii in xrange(len(colors)):
            tile = Surface((size, size))
            for x in xrange(size):
                for y in xrange(size):
                    if not (x + y) % 2:
                        color = colors[ii]
                    elif (x + y) % 4 == 1:
                        color = colors[(ii + 1) % len(colors)]
                    else:
                        color = colors[(ii + 2) % len(colors)]
                    tile.set_at((x, y), color)
            surface = Surface(self.screen.get_size())
            for x in xrange(0, surface.get_width(), size):
                for y in xrange(0, surface.get_height(), size):
                    surface.blit(tile, (x, y))
            backgrounds.append(surface)

    def reset(self):
        self.place_indicator()
        self.activate()

    def place_indicator(self):
        self.indicator_rect.centery = self.\
                                      character_rects[self.parent.characters.\
                                                      current_index].centery

    def activate(self):
        self.active = True
        self.play()

    def deactivate(self):
        self.active = False

    def advance_frame(self):
        self.background_index += 1
        if self.background_index == len(self.backgrounds):
            self.background_index = 0

    def change_character(self, decrement=False):
        self.parent.characters.shift_index(decrement)
        self.place_indicator()

    def update(self):
        if self.active:
            if random() < self.interval_change_rate:
                self.interval = randint(*self.interval_range)
            Animation.update(self)
            self.screen.blit(self.backgrounds[self.background_index], (0, 0))
            for ii, character in enumerate(self.parent.characters):
                if character.is_selected_character():
                    surface = character.large_surface
                else:
                    surface = character.mono_surface
                self.screen.blit(surface, self.character_rects[ii])
            self.indicator_surfaces_index += 1
            if self.indicator_surfaces_index == len(self.indicator_surfaces):
                self.indicator_surfaces_index = 0
            self.screen.blit(self.\
                             indicator_surfaces[self.indicator_surfaces_index],
                             self.indicator_rect)


class Level:

    def __init__(self, pad_width_range, pad_speed_range, pad_gap_range,
                 room_height):
        self.pad_width_range = pad_width_range
        self.pad_speed_range = pad_speed_range
        self.pad_gap_range = pad_gap_range
        self.room_height = room_height

    def generate_pad_parameters(self):
        return tuple((uniform(*limits) for limits in (self.pad_width_range,
                                                      self.pad_speed_range,
                                                      self.pad_gap_range)))


class Field(Child):

    levels = Level((25, 40), (.75, 1), (52, 72), 16), \
             Level((18, 28), (1.2, 1.5), (58, 80), 45), \
             Level((4, 12), (8, 11), (100, 150), 360)

    def __init__(self, parent):
        Child.__init__(self, parent)
        self.background = Background(self)
        self.road = Road(self)
        self.pit = Pit(self)
        self.room = Room(self)
        self.jumper = Jumper(self)

    def reset(self):
        self.level_index = 0
        self.deactivate()

    def deactivate(self):
        self.active = False

    def activate(self):
        self.active = True
        self.pit.play()
        self.road.fire.play()

    def get_current_level(self):
        return self.levels[self.level_index]

    def start_level(self):
        self.background.paint()
        pad_color = self.pad_color = Color(0, 0, 0)
        pad_color.hsla = randrange(0, 360), 100, 32, 100
        pad_border_color = self.pad_border_color = Color(0, 0, 0)
        pad_border_color.hsla = randrange(0, 360), 60, 86, 100
        self.road.populate()
        self.room.place()
        self.jumper.drop()

    def update(self):
        if self.active:
            self.background.update()
            self.pit.update()
            self.road.update()
            self.room.update()
            self.jumper.update()


class Background(Child):

    tile_size = 16
    tile_count = 32
    tile_color_range = 0, 120
    blend = BLEND_RGB_ADD
    segment_sizes = [.1, .15, .25, .33]
    foreground_saturation_range = 80, 80
    foreground_lightness_range = 70, 70
    foreground_hue_offset_range = 4, 30
    mask_speed = 1

    def __init__(self, parent):
        Child.__init__(self, parent)
        self.mask_x = 0
        self.mask = Surface(self.screen.get_size())
        self.foreground = Surface(self.screen.get_size())

    def paint(self):
        self.fill_mask()
        self.fill_foreground()

    def fill_mask(self):
        self.set_tiles()
        mask = self.mask
        for x in xrange(0, mask.get_width(), self.tile_size):
            for y in xrange(0, mask.get_height(), self.tile_size):
                mask.blit(choice(self.tiles), (x, y))

    def set_tiles(self):
        self.tiles = tiles = []
        for _ in xrange(self.tile_count):
            size = self.tile_size
            tile = Surface((size, size))
            palette = self.get_palette()
            window = Rect(0, 0, size / 2, size / 2)
            for x in xrange(0, size, window.w):
                for y in xrange(0, size, window.h):
                    window.topleft = x, y
                    tile.fill(palette[(x + y) % 2], window)
            tiles.append(tile)

    def get_palette(self):
        return self.get_tile_color(), self.get_tile_color()

    def get_tile_color(self):
        color = [0, 0, 0]
        color[randint(0, 2)] = randint(*self.tile_color_range)
        return color

    def fill_foreground(self):
        foreground = self.foreground
        rect = foreground.get_rect()
        x_intervals = [0]
        total = 0
        shuffle(self.segment_sizes)
        for size in self.segment_sizes:
            interval = int(size * rect.w)
            x_intervals.append(interval + total)
            total += interval
        x_intervals.append(rect.w)
        interval_index = 0
        base_hue = randrange(0, 360)
        saturation = randint(*self.foreground_saturation_range)
        lightness = randint(*self.foreground_lightness_range)
        next_base_color = self.get_foreground_color(base_hue, saturation,
                                                    lightness)
        for x in xrange(rect.w):
            if x >= x_intervals[interval_index]:
                interval_index += 1
                base_color = next_base_color
                next_base_color = self.get_foreground_color(base_color.hsla[0],
                                                            saturation,
                                                            lightness)
            bh = base_color.hsla[0]
            nh = next_base_color.hsla[0]
            if nh < bh:
                difference = 360 - bh + nh
            else:
                difference = nh - bh
            hue = int(bh + difference * \
                      ((x - x_intervals[interval_index - 1]) / \
                       float(x_intervals[interval_index] - \
                             x_intervals[interval_index - 1]))) % 360
            color = Color(0, 0, 0)
            color.hsla = [hue] + map(int, base_color.hsla[1:])
            foreground.fill(color, (x, 0, 1, rect.h))

    def get_foreground_color(self, base, saturation, lightness):
        color = Color(0, 0, 0)
        hue = (base + randint(*self.foreground_hue_offset_range)) % 360
        color.hsla = hue, saturation, lightness, 100
        return color

    def update(self):
        self.mask_x -= self.mask_speed
        if self.mask_x < -self.screen.get_width():
            self.mask_x = 0
        self.screen.blit(self.foreground, (0, 0))
        self.screen.blit(self.mask, (self.mask_x, 0), None, self.blend)
        self.screen.blit(self.mask, (self.mask_x + self.screen.get_width(), 0),
                         None, self.blend)


class Road(Child):

    def __init__(self, parent):
        Child.__init__(self, parent)
        self.fire = Fire(self)
        self.pads = Pads(self)

    def populate(self):
        self.pads.populate()

    def update(self):
        self.fire.update()
        self.pads.update()


class Fire(Animation):

    frame_count = 128
    tile_path = join("resource", "img", "fire.png")
    speed = 1
    height = 20

    def __init__(self, parent):
        Animation.__init__(self, parent, 0)
        self.frame_index = 0
        base_tile = load(self.tile_path).convert()
        self.tile_height = base_tile.get_height()
        frames = self.frames = []
        frame_count = self.frame_count
        for ii in xrange(frame_count):
            tile = base_tile.copy()
            pixels = PixelArray(tile)
            for x in xrange(len(pixels)):
                for y in xrange(len(pixels[0])):
                    color = Color(*tile.unmap_rgb(pixels[x][y]))
                    h, s, l, a = color.hsla
                    color.hsla = int((h + ii * 360.0 / frame_count) % 360), \
                                 max(0, s - 10), min(100, l + 10), a
                    pixels[x][y] = color
            del pixels
            tr = tile.get_rect()
            frame = Surface((self.screen.get_width(),
                             tr.h * (self.height / tr.h + 2)), SRCALPHA)
            for x in xrange(0, frame.get_width(), tr.w):
                for y in xrange(0, frame.get_height(), tr.h):
                    frame.blit(tile, (x, y))
            frames.append(frame)
        window_rect = self.window_rect = Rect(0, self.screen.get_height() - \
                                              self.height,
                                              self.screen.get_width(),
                                              self.height)
        self.rect = self.frames[0].get_rect()
        self.rect.bottom = window_rect.bottom

    def advance_frame(self):
        self.frame_index += 1
        if self.frame_index == len(self.frames):
            self.frame_index = 0

    def get_current_frame(self):
        return self.frames[self.frame_index]

    def update(self):
        Animation.update(self)
        self.rect.bottom += self.speed
        if self.rect.bottom == self.window_rect.bottom + self.tile_height:
            self.rect.bottom = self.window_rect.bottom
        self.screen.set_clip(self.window_rect)
        self.screen.blit(self.get_current_frame(), self.rect)
        self.screen.set_clip(None)


class Pads(Child, list):

    def __init__(self, parent):
        Child.__init__(self, parent)

    def populate(self):
        list.__init__(self, [])
        x = -20
        while x < self.screen.get_width():
            width, speed, self.gap = self.parent.parent.get_current_level().\
                                     generate_pad_parameters()
            self.append(Pad(self, width, speed))
            self[-1].x = x
            x += self.gap + width

    def update(self):
        self.retire()
        for pad in self:
            pad.update()
        if self.screen.get_width() - self[-1].rect.right >= self.gap:
            width, speed, self.gap = self.parent.parent.get_current_level().\
                                     generate_pad_parameters()
            self.append(Pad(self, width, speed))

    def retire(self):
        while self[0].rect.right < 0:
            self.pop(0)


class Pad(Child):

    height = 6

    def __init__(self, parent, width, speed):
        Child.__init__(self, parent)
        self.speed = speed
        surface = self.surface = Surface((width, self.height))
        rect = self.rect = surface.get_rect()
        field = self.parent.parent.parent
        rect.bottomleft = self.screen.get_width(), \
                          field.road.fire.window_rect.top
        surface.fill(field.pad_color)
        surface.fill(field.pad_border_color, (0, 0, rect.w, 2))
        surface.fill(field.pad_border_color, (0, 0, 2, rect.h))
        surface.fill(field.pad_border_color, (rect.w - 2, 0, 2, rect.h))
        self.x = rect.left

    def update(self):
        self.x -= self.speed
        self.rect.left = int(self.x)
        self.screen.blit(self.surface, self.rect)


class Pit(Animation):

    frame_count = 20
    radius = 8
    alpha = 220

    def __init__(self, parent):
        Animation.__init__(self, parent, 600)
        self.frame_index = 0
        background_frames = self.background_frames = []
        foreground_frames = self.foreground_frames = []
        radius = self.radius
        for ii in xrange(self.frame_count):
            background_frame = Surface((radius * 2, self.screen.get_height()))
            background_frame.set_colorkey((0, 0, 0))
            foreground_frame = background_frame.copy()
            color = Color(0, 0, 0)
            color.hsla = int(ii * 360.0 / self.frame_count), 100, 60, 100
            for y in xrange(radius, background_frame.get_height(), radius * 2):
                # circle(background_frame, color, (radius, y), radius)
                color.hsla = [(color.hsla[0] + 30) % 360] + list(color.hsla[1:])
                circle(foreground_frame, color, (radius, y), radius - 4)
            background_frame.set_alpha(self.alpha)
            foreground_frame.set_alpha(self.alpha)
            background_frames.append(background_frame)
            foreground_frames.append(foreground_frame)
        rect = self.rect = background_frame.get_rect()
        rect.right = self.screen.get_rect().right - 2

    def advance_frame(self):
        self.frame_index += 1
        if self.frame_index == len(self.background_frames):
            self.frame_index = 0

    def update(self):
        Animation.update(self)
        self.screen.blit(self.background_frames[self.frame_index], self.rect)
        self.screen.blit(self.foreground_frames[self.frame_index], self.rect)


class Room(Child):

    image_path = join("resource", "img", "cliff")

    def __init__(self, parent):
        Child.__init__(self, parent)
        self.set_surfaces()
        self.close()

    def set_surfaces(self):
        self.closed_surface = load(join(self.image_path,
                                        "closed.png")).convert_alpha()
        self.open_surface = load(join(self.image_path,
                                      "open.png")).convert_alpha()
        rect = self.rect = self.closed_surface.get_rect()
        rect.right = self.screen.get_rect().right

    def close(self):
        self.closed = True
        self.set_active_surface()

    def set_active_surface(self):
        if self.closed:
            self.active_surface = self.closed_surface
        else:
            self.active_surface = self.open_surface

    def open(self):
        self.closed = False
        self.set_active_surface()

    def place(self):
        self.rect.bottom = self.screen.get_height() - \
                           self.parent.get_current_level().room_height

    def update(self):
        self.screen.blit(self.active_surface, self.rect)


class Jumper(Child):

    hover_location = 38, 300
    hover_length = 3000

    def __init__(self, parent):
        Child.__init__(self, parent)
        self.blink = Blink(self)

    def set_surface(self):
        self.surface = self.parent.parent.characters.get_selected_character().\
                       mini_surface
        self.rect = self.surface.get_rect()

    def drop(self):
        self.blink.play()
        self.hover_remaining = self.hover_length
        self.last_ticks = get_ticks()
        self.velocity = [0, 0]
        self.rect.center = self.hover_location
        self.precise_location = list(self.rect.topleft)

    def update(self):
        if self.hover_remaining > 0:
            self.hover_remaining -= get_ticks() - self.last_ticks
            if self.hover_remaining <= 0:
                self.blink.stop()
                self.velocity = [0, -5]
            else:
                self.last_ticks = get_ticks()
        self.blink.update()
        self.precise_location[0] += self.velocity[0]
        self.precise_location[1] -= self.velocity[1]
        self.rect.topleft = map(int, self.precise_location)
        if self.blink.visible:
            self.screen.blit(self.surface, self.rect)


class Blink(Animation):

    def __init__(self, parent):
        Animation.__init__(self, parent, 300)
        self.stop()

    def advance_frame(self):
        self.visible = not self.visible

    def stop(self):
        Animation.stop(self)
        self.visible = True


if __name__ == "__main__":
    environ["SDL_VIDEO_CENTERED"] = "1"
    Between().run()
54.162.203.39
54.162.203.39
54.162.203.39
 
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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