Video Games

EVR.include("level/cheers/marquee/Spectrum.js");
EVR.Level.Cheers.Marquee = function(
   cheers, color_offset, placement_offset, z_index, opacity)
{
   EVR.Graphic.call(this, cheers);
   this.cheers = cheers;
   this.spectrum = new EVR.Level.Cheers.Marquee.Spectrum(color_offset);
   this.placement_offset = placement_offset || [0, 0];
   this.z_index = z_index || 0;
   this.spectrum_index = CHEERS_SPECTRUM_STARTING_INDEX;
   this.font_size = CHEERS_FONT_SIZE;
   this.opacity = opacity;
   this.glyphs = [];
   this.setAttributes();
   this.append();
}
EVR.Level.Cheers.Marquee.prototype = new EVR.Graphic;
EVR.Level.Cheers.Marquee.prototype.setAttributes = function()
{
   this.set_z(this.z_index);
   this.set_opacity(this.opacity);
   var css = this.css;
   css.fontWeight = "bold";
   css.textAlign = "left";
   css.whiteSpace = "nowrap";
   this.setFontSize();
}
EVR.Level.Cheers.Marquee.prototype.setFontSize = function()
{
   var dimensions = this.cheers.level.container.get_dimensions();
   var modifier = dimensions[1] / dimensions[0];
   var basis = dimensions[0] * modifier;
   var size = parseInt(basis * this.font_size);
   this.css.fontSize = size + "px";
   this.whitespace_length = basis * CHEERS_GLYPH_PADDING;
}
EVR.Level.Cheers.Marquee.prototype.place = function()
{
   EVR.Graphic.prototype.place.call(this, 0, CHEERS_MARQUEE_OFFSET);
   var x = this.get_coordinates()[0] + this.placement_offset[0];
   var y = this.get_coordinates()[1] + this.placement_offset[1];
   this.set_coordinates([x, y]);
}
EVR.Level.Cheers.Marquee.prototype.addCheer = function(cheer)
{
   var parent = this.element;
   for (var ii = cheer.length - 1; ii >= 0; ii--)
   {
      var color = this.spectrum.get(this.spectrum_index);
      this.addGlyph(cheer.charAt(ii), color, ii == cheer.length - 1);
   }
}
EVR.Level.Cheers.Marquee.prototype.addGlyph = function(character, color, pad)
{
   var parent = this.element;
   var element = document.createElement("span");
   element.innerHTML = character;
   element.style.color = color;
   parent.insertBefore(element, parent.firstChild);
   if (pad)
   {
      element.style.paddingRight = this.whitespace_length + "px";
   }
   this.glyphs.push(element);
   this.spectrum_index++;
}
EVR.Level.Cheers.Marquee.prototype.addJeer = function()
{
   var color = CHEERS_JEER_COLOR;
   var jeer = CHEERS_JEER_TEXT;
   for (var ii = jeer.length - 1; ii >= 0; ii--)
   {
      this.addGlyph(jeer.charAt(ii), color, ii == jeer.length - 1);
   }
}
EVR.Level.Cheers.Marquee.prototype.draw = function()
{
   EVR.Graphic.prototype.draw.call(this);
   this.setFontSize();
   var glyph, glyphs = this.glyphs;
   for (var ii = 0; ii < glyphs.length; ii++)
   {
      glyph = glyphs[ii];
      if (parseInt(glyph.style.paddingRight) > 0)
      {
	 glyph.style.paddingRight = this.whitespace_length;
      }
   }
}
EVR.Level.Cheers.Marquee.prototype.toString = function()
{
   return "[EVR.Level.Cheers.Marquee]";
}

EVR.Level.Cheers.Marquee.Spectrum = function(offset)
{
   this.offset = offset;
   this.build();
}
EVR.Level.Cheers.Marquee.Spectrum.prototype.build = function()
{
   var max = 255 - this.offset;
   var count = CHEERS_SPECTRUM_LENGTH;
   var interval = Math.round(count / 6);
   var step = Math.round(max / (interval - 1));
   var component, color, spectrum = [];
   for (var ii = 0; ii < interval; ii++)
   {
      component = step * ii;
      spectrum.push(new EVR.Color([max, component, 0]));
   }
   for (var ii = interval - 1; ii >= 0; ii--)
   {
      component = step * ii;
      spectrum.push(new EVR.Color([component, max, 0]));
   }
   for (var ii = 0; ii < interval; ii++)
   {
      component = step * ii;
      spectrum.push(new EVR.Color([0, max, component]));
   }
   for (var ii = interval - 1; ii >= 0; ii--)
   {
      component = step * ii;
      spectrum.push(new EVR.Color([0, component, max]));
   }
   for (var ii = 0; ii < interval; ii++)
   {
      component = step * ii;
      spectrum.push(new EVR.Color([component, 0, max]));
   }
   for (var ii = interval - 1; ii >= 0; ii--)
   {
      component = step * ii;
      spectrum.push(new EVR.Color([max, 0, component]));
   }
   this.spectrum = spectrum;
}
EVR.Level.Cheers.Marquee.Spectrum.prototype.get = function(index)
{
   var spectrum = this.spectrum;
   return spectrum[index % spectrum.length].get_string();
}
EVR.Level.Cheers.Marquee.Spectrum.toString = function()
{
   return "[object EVR.Level.Cheers.Marquee.Spectrum]";
}

EVR.include("level/loader/Parser.js");
EVR.Level.Loader = function(level)
{
   this.level = level;
}
EVR.Level.Loader.prototype.load = function()
{
   this.build_requester();
   var document = this.requester.execute();
   this.parser = new EVR.Level.Loader.Parser(this.level, document);
}
EVR.Level.Loader.prototype.build_requester = function()
{
   var path = SOURCE_PATH + "level/loader/fetch.php";
   var query = "id=" + this.level.id;
   this.requester = new EVR.Requester(path, query);
}
EVR.Level.Loader.prototype.toString = function()
{
   return "[object EVR.Level.Loader]";
}

EVR.Level.Loader.Parser = function(level, document)
{
   this.level = level;
   this.root = document.getElementsByTagName("level")[0];
   this.parse();
}
EVR.Level.Loader.Parser.prototype.parse = function()
{
   this.parse_attributes();
   this.parse_sky();
   this.parse_beams();
   this.parse_path();
}
EVR.Level.Loader.Parser.prototype.parse_attributes = function()
{
   var level = this.level;
   var root = this.root;
   level.background = root.getAttribute("background");
   level.goal = new EVR.Time(root.getAttribute("goal"));
   level.advanced = new EVR.Time(root.getAttribute("advanced"));
   level.threshold = parseFloat(root.getAttribute("threshold"));
   level.sound.set_song(root.getAttribute("song"));
}
EVR.Level.Loader.Parser.prototype.parse_sky = function()
{
   var node = this.root.getElementsByTagName("sky")[0];
   var tags = node.getElementsByTagName("background");
   var sky = this.level.sky = [];
   for (var ii = 0; ii < tags.length; ii++)
   {
      sky.push(tags[ii].getAttribute("color"));
   }
}
EVR.Level.Loader.Parser.prototype.parse_beams = function()
{
   var node = this.root.getElementsByTagName("beams")[0];
   var tags = node.getElementsByTagName("beam");
   this.level.beams = [];
   for (var ii = 0; ii < tags.length; ii++)
   {
      this.level.beams.push(tags[ii].getAttribute("color"));
   }
}
EVR.Level.Loader.Parser.prototype.parse_path = function()
{
   var node = this.root.getElementsByTagName("path")[0];
   var tags = node.getElementsByTagName("cluster");
   this.level.clusters = [];
   for (var ii = 0; ii < tags.length; ii++)
   {
      this.add_cluster(tags[ii]);
   }
}
EVR.Level.Loader.Parser.prototype.add_cluster = function(tag)
{
   var level = this.level;
   var passage = tag.getAttribute("passage");
   var width = tag.getAttribute("width");
   var gap = tag.getAttribute("gap");
   var cluster = new EVR.Level.Cluster(passage, width, gap, level.practice);
   level.clusters.push(cluster);
}
EVR.Level.Loader.Parser.prototype.toString = function()
{
   return "[object EVR.Level.Loader.Parser]";
}

18.97.14.89

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.

↠ RSS Feed ↞