We will make a new class to handle texture and call it TexturePart (naming convention is not my forte). First things first, we need to add the LibGDX tools dependency to our project so we can access the awesome tools that they provide. If you have no idea about textureatlas, textureregion please check one of our older tuts where we explained about them and the tool TexturePacker. HealthBarRegion=atlas.findRegion("healthbar") //Assuming the image of health bar name is "healthbar" String texturefile=texturedir+"/imagepack" Ītlas=new TextureAtlas((texturefile),(texturedir)) Assuming you have the image pack generated from texturepacker named as "imagepack" We have a textureatlas which has our bar which we need to show on the screen and reduce its size depending on the health (or mana) of the character. This post is more specific to Libgdx but the basic concept can be used in any other library which has similar features. We needed to this functionality in our next game though in a little different way so we thought we would just share it.
#Lidgdx texturepacker code
In this post we would be writing a snippet to draw a part of image which can be used to simulate effect of health bar we see in game huds. Best Java code snippets using. (Showing top 20 results out of 315) Codota Icon new Point(x, y). During bootup, we’ll be adding all our images via this library, and if you need one later on, ask the library to find it (by idName).Its been long since we wrote any post about game development. This is a collection that contains ALL available Images. Last but not least, we add yet another file called “GxImageLibrary.java”. That’s it for now, just a really simple file. This.texture = new TextureAtlas( this.atlasFilePath ) Public TextureRegion findRegion( String regionName ) ( "GxImage created: "+ idName+" path: "+this.imageFilePath ) TexturePacker - sprite sheet packer with graphical user interface and tons of options. Public GxImage( String idName, String imageFilePath, String atlasFilePath ) Now that we have some stuff for testing purposes, let’s proceed with GxImage.java in the Graphics section: A region has (sub-rect) coordinates and an idName that equals the original input filename. This file describes the "regions", where each region is one of the 11 images. The packer tool throws them all together, and generates a single imge file + an atlas descriptor file. In the example above, I made 11 pictures of a (clay orb), to make sort of a "sparkling" animation. It makes a lot sense if you plan to make a tile based map, like this one: If you group/sort your entities on Image, that is. If you have 10 entities all using the same image (but different sub-sections or "regions" of it), only 1 swap is needed. If you render 10 entities with 10 different images, LibGDX (or actually OpenGL) has to swap the active texture 10 times, which isn’t for free. Loading 1 (big) file is more comfortable than loading 10 (small) files. The benefit of that? Computers like bulk stuff. Or just put them all together in the same file. You could create 10 separate image files. Remember your teacher pointing at Eskimo county or Pizza land? Let's say you have 10 different "Crate" objects - thus 10 different images. Sounds like we need an Image class then! We’ll be creating a “GxImage.java” file, which is basically a wrapper around the LibGDX “TextureAtlas” (instead of Image) class.Īn Atlas image is just a bigger picture with multiple smaller images inside. Pretty much every visual entity will be linked to an Image (collection). Resources are typically static (just loaded once, never changing from there on), Entities dynamic (they come and go). In general, try to make your game (classes) in such a way that there will be one resource, that can be used by multiple users (entities). Built with LibGDX, Tiled, TexturePacker, Box2D.
#Lidgdx texturepacker plus
If we have 10 explosive barrels, they can all share the same image(collection), instead of loading there own stuff individually. Libgdx Texturepacker Projects (2) C Plus Plus Bin Packing Texturepacker Projects (2) C Plus Plus Bin Packing Texturepacker Texture Atlas Projects (2) C Plus Plus. Destroy your foes and people who have wronged you and prepare to face the ultimate evil Youre in control of a fierce gladiator who has lost everything and seeks revenge, fight your way through the roman empire to defeat your main nemesis. Second, we don’t want to load the same image many times. Animations on themselves have properties too, like animation-speed, frameCount, and whether the animation is looped or should trigger another animation when it’s done. So we actually need a collection of some sort. But there are two problems with that.įirst, a sprite may need multiple images, and animations. As I understand it, the texturepacker can be/ is a standalone program which will produce the same results. We could simply add a few lines to the class that will load an image and apply that to the sprite. As we saw in earlier code, the LibGDX sprite needs to be connected with an image, something to draw. We were making a Sprite Entity, but it isn’t finished yet.