Flixel Power Tools Category
29th Apr 2011
I’m pleased to announce that I released v1.4 of the Flixel Power Tools tonight. I have re-factored all of the tools so they now run as native Flixel plugins, something Adam added to 2.5 (I suspect after I wore him down on gtalk with requests for it :). The Flixel plugin structure is great, because plugins can be registered with the framework once and then run independently of your game state, with hooks into the core update loop. Sweet.
As well as the 2.5 updates I also added 2 new classes and loads of Test Suite demos that I’m really stoked about. The new classes are:
This class allows you to take screen grabs of your game as it’s running. And then save that grab as a PNG locally. The screen grab process can be bound to a Hot Key, or called directly. You can control if the mouse pointer is hidden before capture or not, and you have full control over which part of the screen is captured. It defaults to the whole screen, but any rectangle region is valid (and can even be passed in real-time, see the Camera Test Suite example!)
At the moment I see this class as being useful during development to take quick grabs, but I’ll update it so that you could use it in an actual game, as right now Flash Player security restrictions don’t allow the FileReference Save window to open because I don’t trigger it on a MouseEvent. But this will be fixed
The next class is …
This class is a powerful way to create scrolling regions in any FlxSprite. A good example may be a background sprite which has a seamless (tiling) texture on it. With this class you can make the texture scroll at any speed in any direction seamlessly but keep just one sprite on-screen. You can create as many scrolling zones as you like in one sprite, and add as many sprites as you like to the FlxScrollZone manager! It’s fast enough that the x/y scroll speeds can be fed to it in real-time. Lots of Test Suite examples showcase the various ways this can be used. The important thing to remember is that even with all that scrolling going on, the x/y values of the sprites being used are never touched. Perfect for game backdrops, sequences, skies, etc.
Grab these and the rest of the Flixel Power Tools
12th Apr 2011
Adam has recently pushed Flixel v2.5 from the dev branch to beta, which means it is very close to becoming the next master release of flixel.
A lot has changed between the previous version and 2.5. There have been significant structural changes, dead-wood pruned out, and a lot of really nice new features added including powerful cameras and game save / replay support.
There’s little point holding on to the past, so I have updated the Flixel Power Tools accordingly. They are now fully v2.5 compatible, and the library, Test Suite and all the Tests have been updated to the new format. I will no longer maintain the old 2.43 branch, and it will eventually be archived away. All new classes will be for v2.5+ only.
The Test Suite was also updated. I fixed the FlxColors Test 2, so it now properly works. FlxStarfield now has 2 new tests and supports both 2D and 3D starfields, and there is a new FlxButtonPlus test to show how to create custom buttons with roll-over events, callback parameters and more.
You can get the download from the Google Code Projects page as a zip file, or check out the svn project from there. Several people have been asking that I move it over to github. If you agree then let me know. It’s a lot of extra work maintaining both svn and git versions, but I personally am far more happy working in svn at the moment. Still, if demand is large enough I’ll spend the time required to learn git properly.
5th Apr 2011
Health bars are a commonly used feature in games. From little health bars floating over players / enemies heads, to bars in the UI / HUD. This class provides a really fast way to create them, and they are highly customisable. It features:
ActionScript123456// Create a tiny 32x4 health bar that floats above the "wolf" spritewolfHealth = new FlxHealthBar(wolf, 32, 4, 0, 100);// Tells it to track the x/y position of the wolf FlxSprite but offset by -5px on YwolfHealth.trackParent(0, -5);
- 3 different types of bar: Plain-colour filled, Gradient filled or Image filled
- All fill types support alpha levels
- Optional 1px border around the bar with configurable colour
- The bar can fill in one of 3 directions: From left to right, right to left or from the inside out
- Bars are associated with FlxSprites (its parent). When the health value of the parent changes, the bar updates automatically (within a given threshold limit)
- Bar can be fixed on-screen, and supports scrollFactor
- Bar can “float” with its parent at a given x/y offset from the parents origin
Visit the Flixel Power Tools page to see it in action in the Test Suite, and find the svn download details.
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