djcsdy’s gists

djcsdy / Map.java

Created February 10, 2011 18:15

Example of functional-style ‘map’ in Java. Isn’t it revolting? :)

	package net.noiseinstitute.lambda;

	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.List;

	public class Map {

	public static <T,U> List<U> map (Collection<T> collection, MapCallback<T,U> callback) {
	List<U> list = new ArrayList<U>();

djcsdy / make-thumbnail.as

Created February 12, 2011 17:38

Example of creating a bimap thumbnail of a sprite/movieclip in Flash/AS3

	var matrix:Matrix = new Matrix();
	matrix.scale(0.2);
	var bitmapData:BitmapData = new BitmapData(width, height);
	bitmapData.draw(movieClip, matrix);

djcsdy / elastic-collision.as

Created March 7, 2011 01:17

Rough implementation of fully-elastic collision. Only modifies the position and velocity of sprite 1; the assumption is that this code will get run again with the sprites swapped round. The stuff in actionQueue.enqueue should get run after all collisions

	var sprite2ToSprite1:FlxPoint = VectorMath.subtract(sprite1.centre, sprite2.centre);
	var sprite2ToSprite1UnitVector:FlxPoint = VectorMath.normalize(sprite2ToSprite1);
	var sprite2SpeedTowardsSprite1:Number = VectorMath.dotProduct(sprite2.velocity, sprite2ToSprite1UnitVector);
	var sprite1ToSprite2UnitVector:FlxPoint = VectorMath.negate(sprite2ToSprite1UnitVector);
	var sprite1SpeedTowardsSprite2:Number = VectorMath.dotProduct(sprite1.velocity, sprite1ToSprite2UnitVector);
	var sumOfThoseSpeeds:Number = sprite1SpeedTowardsSprite2 + sprite2SpeedTowardsSprite1;

	var sprite1VelocityChange:FlxPoint =
	VectorMath.multiply(sprite2ToSprite1UnitVector, sumOfThoseSpeeds/2);

djcsdy / svn-clean.ps1

Created March 17, 2011 16:03

Powershell script to delete files from an SVN working copy that are neither version-controlled nor ignored. Roughly equivalent to git clean -f. Requires the command-line svn to be located in your %PATH%.

	svn status \|
	Select-String '^\?' \|
	ForEach-Object {
	[Regex]::Match($_.Line, '^[^\s]\s+(.)$').Groups[1].Value
	} \|
	Remove-Item -Recurse -Force -ErrorAction SilentlyContinue

djcsdy / escape-selector.js

Created March 24, 2011 16:58

Escapes a string for use within a CSS selector as an identifier

	function escapeSelector(selector) {
	return "".replace.call(selector,
	/(^[^_a-zA-Z\u00a0-\uffff]\|[^-_a-zA-Z0-9\u00a0-\uffff])/g,
	"\\$1");
	}

	// Use this to escape CSS identifiers that may contain reserved characters.
	// For example, in JQuery, to select the element whose identifier is named by the variable 'id':
	$('#' + escapeSelector(id));

djcsdy / svn-clean-all.ps1

Created April 20, 2011 15:27

Powershell script to delete all unversioned files from an SVN working copy, including ignored files. Roughly equivalent to git clean -f -x. Requires the command-line svn to be located in your %PATH%.

	svn status --no-ignore \|
	Select-String '^[?I]' \|
	ForEach-Object {
	[Regex]::Match($_.Line, '^[^\s]\s+(.)$').Groups[1].Value
	} \|
	Remove-Item -Recurse -Force -ErrorAction SilentlyContinue

djcsdy / BrokenUriBuilder.cs

Created September 29, 2011 10:38

Microsoft are imbeciles

	var uriBuilder = new UriBuilder();
	uriBuilder.Query = "foo=bar";
	Console.WriteLine(uriBuilder.Query); // prints "?foo=bar"

	uriBuilder.Query = uriBuilder.Query;
	Console.WriteLine(uriBuilder.Query); // prints "??foo=bar"

	// Someone at Microsoft needs a swift kick in the balls.

djcsdy / gist:1896016

Created February 24, 2012 00:15

Object closure allocation in AS3

	class Foo {
	function hatstand():void {}
	function lampshade():void {
	Tablecloth.onRemove(hatstand); // <- this allocates
	}
	}

	class Foo {
	var f:Function;
	function Foo() {

djcsdy / LICENSE.txt

Created June 5, 2012 15:04 — forked from p01/LICENSE.txt

Music SoftSynth

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 Mathieu 'p01' Henri http://www.p01.org/releases/

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

djcsdy / debug-swf.sh

Created June 12, 2012 23:08

Launches a SWF in an fdb session so you can see traces and uncaught exceptions

	#!/bin/sh

	# This turned out to be easier than expected.

	SWF="$1"
	fdb "$SWF"

	svn status \|
	Select-String '^\?' \|
	ForEach-Object {
	[Regex]::Match($_.Line, '^[^\s]\s+(.)$').Groups[1].Value
	} \|
	Remove-Item -Recurse -Force -ErrorAction SilentlyContinue

	svn status --no-ignore \|
	Select-String '^[?I]' \|
	ForEach-Object {
	[Regex]::Match($_.Line, '^[^\s]\s+(.)$').Groups[1].Value
	} \|
	Remove-Item -Recurse -Force -ErrorAction SilentlyContinue

Daniel Cassidy djcsdy