Video Games

<?php
$GLOBALS["CACHE_PATH"] = "flash/cache/";
$GLOBALS["FILE_EXTENSION"] = ".gif";
$GLOBALS["RELATIVE_IMAGE_DIRECTORY_PATH"] = "img/";
remove_cached_strip();
function remove_cached_strip()
{
   go_to_cache_directory();
   $path = find_image_file();
   unlink($path);
}
function go_to_cache_directory()
{
   go_to_image_directory();
   chdir($GLOBALS["CACHE_PATH"]);
}
function go_to_image_directory()
{
   $path = $GLOBALS["RELATIVE_IMAGE_DIRECTORY_PATH"];
   while (!is_dir($path))
   {
      chdir("..");
   }
   chdir($path);
}
function find_image_file()
{
   $index = $_GET["index"];
   foreach (scandir(".") as $file)
   {
      if (fnmatch($index . "_*", $file))
      {
         return $file;
      }
   }
}

EVR.Level.Road.Path.Line = function(container, style)
{
   EVR.Graphic.call(this, container, RATIO_HEIGHT, null, ALIGN_LEFT);
   this.style = style;
   this.margin = LINE_MARGIN;
   this.checkers = [];
   this.build();
}
EVR.Level.Road.Path.Line.prototype = new EVR.Graphic;
EVR.Level.Road.Path.Line.prototype.build = function()
{
   this.set_proportions(LINE_WIDTH, 1);
   this.set_color(LINE_COLOR);
   this.set_opacity(LINE_OPACITY);
   if (this.style == LINE_FINISH)
   {
      this.add_checkers();
   }
}
EVR.Level.Road.Path.Line.prototype.add_checkers = function()
{
   var count = LINE_CHECKER_COUNT;
   var width = .5;
   var height = 1.0 / count;
   var alignment;
   for (var ii = 0; ii < count; ii++)
   {
      alignment = ii % 2 ? ALIGN_TOP_RIGHT : ALIGN_TOP_LEFT;
      var checker = new EVR.Graphic(this, null, null, alignment);
      checker.set_color(LINE_CHECKER_COLOR);
      checker.set_proportions(width, height);
      checker.place(null, height * ii);
      checker.append();
      this.checkers.push(checker);
   }
}
EVR.Level.Road.Path.Line.prototype.draw = function()
{
   EVR.Graphic.prototype.draw.call(this);
   if (this.style != LINE_FINISH)
   {
      this.set_border();
   }
   for (var ii = 0; ii < this.checkers.length; ii++)
   {
      this.checkers[ii].draw();
   }
}
EVR.Level.Road.Path.Line.prototype.set_border = function()
{
   var width = this.container.get_dimensions()[0] * this.get_margin();
   var color = this.container.level.background;
   if (!!window.ActiveXObject)
   {
      this.set_dimensions(this.get_dimensions()[0] + width);
   }
   this.css.borderRight = width + "px solid " + color;
}
EVR.Level.Road.Path.Line.prototype.get_margin = function()
{
   var dimensions = this.container.get_dimensions();
   return dimensions[1] / dimensions[0] * this.margin;
}
EVR.Level.Road.Path.Line.prototype.toString = function()
{
   return "[object EVR.Level.Road.Path.Line]";
}

EVR.include("level/road/path/Line.js");
EVR.include("level/road/path/trail/Trail.js");
EVR.Level.Road.Path = function(container, level)
{
   EVR.Animation.call(this, PATH_INITIAL_RATE, true, PATH_TIMING_BUFFER);
   this.container = container;
   this.level = level;
   this.clusters = level.clusters;
   this.racer = container.racer;
   this.sprinting = false;
   this.offset = 0;
   this.speed = PATH_INITIAL_SPEED;
   this.visible = 0;
   this.color = null;
   this.variance = [0, 0];
   this.meter_unlocked = false;
   this.trail = new EVR.Level.Road.Path.Trail(level);
   this.populate();
   this.last_ms = +new Date;
}
EVR.Level.Road.Path.prototype = new EVR.Animation;
EVR.Level.Road.Path.prototype.populate = function()
{
   this.items = [new EVR.Level.Road.Path.Line(this.container)];
   for (var ii = 0; ii < this.clusters.length; ii++)
   {
      this.clusters[ii].initiate(this.container, this.level);
   }
   this.items = this.items.concat(this.clusters);
   this.items.push(new EVR.Level.Road.Path.Line(this.container, LINE_FINISH));
   this.set_origin();
   this.arrange();
}
EVR.Level.Road.Path.prototype.set_origin = function()
{
   var racer = this.racer;
   var offset = racer.get_coordinates(true)[0] + racer.get_dimensions(true)[0];
   this.origin = offset + this.items[0].get_margin();
}
EVR.Level.Road.Path.prototype.arrange = function()
{
   var x = this.origin - this.offset;
   var container = this.container;
   var border = container.get_dimensions()[0];
   var racer = this.racer.get_coordinates()[0];
   var cluster, left, width, right, ratio, inhabited = null;
   for (var ii = this.visible, len = this.items.length; ii < len; ii++)
   {
      cluster = this.items[ii];
      if (!cluster.attached)
      {
	 cluster.append();
      }
      cluster.place(x);
      left = cluster.get_coordinates()[0];
      width = cluster.get_dimensions()[0];
      right = left + width;
      if (inhabited == null)
      {
	 inhabited = this.locate_racer(racer, left, right, ii, len);
	 if (inhabited != null)
	 {
	    this.trail.add(this.speed, this.racer.lane);
	 }
      }
      ratio = width / border;
      x += ratio;
      if (right < 0)
      {
	 cluster.remove();
	 this.visible++;
	 this.offset -= ratio;
      }
      else if (left > border)
      {
	 break;
      }
   }
   return inhabited;
}
EVR.Level.Road.Path.prototype.locate_racer = function(x, left, right, ii, len)
{
   if (ii == 0 && x < left)
   {
      return -1;
   }
   else if (this.intersect(x, left, right) || ii == len - 1)
   {
      return ii;
   }
   return null;
}
EVR.Level.Road.Path.prototype.intersect = function(x, left, right)
{
   return x >= left && x < right;
}
EVR.Level.Road.Path.prototype.sequence = function()
{
   var ii = this.arrange();
   var item = this.items[ii];
   if (item instanceof EVR.Level.Road.Path.Line)
   {
      if (item.style == LINE_FINISH)
      {
	 this.stop();
	 this.update_cheers();
	 this.level.finish();
	 return;
      }
   }
   else if (item != null)
   {
      this.cluster = item;
      this.update_color();
      this.update_variance();
      this.update_streak();
      this.update_sprint_state();
      this.update_flame();
      this.update_flash();
      this.set_instruments(ii);
      this.set_speed();
//       this.update_scoreboard(ii);
      this.update_cheers();
   }
   this.step();
   this.update_ghost(ii);
   this.unlock_meter(ii);
}
EVR.Level.Road.Path.prototype.unlock_meter = function(index)
{
   if (index >= this.items.length - PATH_METER_UNLOCK_OFFSET)
   {
      if (!this.meter_unlocked)
      {
	 this.meter_unlocked = true;
	 this.set_meter_color();
      }
   }
}
EVR.Level.Road.Path.prototype.update_color = function()
{
   var cluster = this.cluster;
   var racer = this.racer;
   var x = racer.get_coordinates()[0];
   var gap_x = cluster.get_gap_x();
   if (x >= gap_x)
   {
      this.color = null;
   }
   else
   {
      this.color = racer.lane;
      if (!this.level.practice)
      {
	 this.racer.add_color(this.color, cluster.passage);
      }
   }
}
EVR.Level.Road.Path.prototype.update_variance = function()
{
   if (this.color != null)
   {
      this.variance[0]++;
      this.variance[1] += !this.is_in_passage();
   }
}
EVR.Level.Road.Path.prototype.is_in_passage = function()
{
   return this.color == this.cluster.passage;
}
EVR.Level.Road.Path.prototype.update_streak = function()
{
   var streak = this.level.streak;
   if (this.color != null)
   {
      if (this.is_in_passage())
      {
	 streak.increase();
      }
      else
      {
	 streak.reset();
      }
   }
}
EVR.Level.Road.Path.prototype.set_instruments = function(ii)
{
   if (ii > 0)
   {
      this.level.map.advance_player(ii - 1);
      this.level.register.advance(ii - 1);
   }
   this.set_meter();
}
EVR.Level.Road.Path.prototype.set_meter = function()
{
   var meter = this.level.meter;
   if (this.sprinting)
   {
      meter.adjust(-this.rate);
   }
   var color = this.color;
   if (color != null && this.is_in_passage())
   {
      adjustment = PATH_METER_BONUS + this.level.streak * PATH_STREAK_BONUS;
      meter.adjust(adjustment);
   }
   this.set_meter_color();
}
EVR.Level.Road.Path.prototype.set_meter_color = function()
{
   var meter = this.level.meter;
   var reading = meter.read();
   if (this.sprinting)
   {
      meter.set_color(METER_DRAINING_COLOR);
   }
   else if (reading >= this.level.threshold || this.meter_unlocked)
   {
      meter.set_color(METER_READY_COLOR);
   }
   else
   {
      meter.set_color(METER_DISABLED_COLOR);
   }
}
EVR.Level.Road.Path.prototype.set_speed = function()
{
   if (this.sprinting && this.level.meter.read() > 0)
   {
      this.speed = PATH_SPRINT_SPEED;
   }
   else
   {
      this.speed = PATH_INITIAL_SPEED;
   }
   var color = this.color;
   if (color != null && !this.is_in_passage())
   {
      this.speed *= PATH_SPEED_PENALTY;
   }
}
EVR.Level.Road.Path.prototype.update_ghost = function(ii)
{
   var road = this.level.road;
   if (!!road.ghost)
   {
      road.ghost.update(this.speed, this.rate, ii);
   }
}
EVR.Level.Road.Path.prototype.update_sprint_state = function()
{
   if (this.sprinting && this.level.meter.read() <= 0)
   {
      this.sprinting = false;
   }
}
EVR.Level.Road.Path.prototype.update_flame = function()
{
   this.racer.flame.update(this.sprinting, this.speed);
}
EVR.Level.Road.Path.prototype.update_flash = function()
{
   this.racer.flash.update();
}
EVR.Level.Road.Path.prototype.update_scoreboard = function(item_index)
{
//    this.level.scoreboard.update(item_index - 1);
   this.level.scoreboard.update(this.speed);
}
EVR.Level.Road.Path.prototype.update_cheers = function()
{
   this.level.cheers.update(this.sprinting, this.speed);
}
EVR.Level.Road.Path.prototype.step = function()
{
   var dimensions = this.container.get_dimensions();
   var ratio = dimensions[1] / dimensions[0];
   this.offset += ratio * this.speed * this.rate;
}
EVR.Level.Road.Path.prototype.stop = function()
{
   EVR.Animation.prototype.stop.call(this);
   this.level.clock.stop();
   this.sprinting = false;
}
EVR.Level.Road.Path.prototype.draw = function()
{
   var cluster, y, boundary, started = false;
   for (var ii = 0, len = this.items.length; ii < len; ii++)
   {
      cluster = this.items[ii];
      if (cluster.attached)
      {
	 started = true;
	 cluster.shape();
	 y = cluster.get_coordinates()[0];
	 boundary = this.container.get_coordinates()[0];
	 if (y > boundary)
	 {
	    cluster.remove();
	 }
      }
      else if (started)
      {
	 break;
      }
   }
   this.set_origin();
   this.arrange();
   this.update_cluster_dimensions();
}
EVR.Level.Road.Path.prototype.update_cluster_dimensions = function()
{
   var items = this.items;
   for (var ii = 1; ii < items.length - 1; ii++)
   {
      items[ii].update_dimensions();
   }
}
EVR.Level.Road.Path.prototype.calculate_accuracy = function()
{
   var variance = this.variance;
   return 1 - (variance[1] / variance[0]);
}
EVR.Level.Road.Path.prototype.sprint = function()
{
   var level = this.level;
   if (level.meter.read() >= level.threshold || this.meter_unlocked)
   {
      this.sprinting = true;
   }
}
EVR.Level.Road.Path.prototype.remove = function()
{
   var item, items = this.items;
   for (var ii = 0; ii < items.length; ii++)
   {
      item = items[ii];
      item.attached && item.remove();
   }
}
EVR.Level.Road.Path.prototype.toString = function()
{
   return "[object EVR.Level.Road.Path]";
}

216.73.216.129

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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