A game library which enables cross-platform game development in Java, with support for Android development and desktop development. It makes use of OpenGL for portability.

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718 views

Top-Down Tilemap Rendering and Collisions in Libgdx

I'm sorry if this question has been previously answered, but I was unable to find an answer here or through google. I'm trying to make a simple roguelike-like that would feature a top-down tile map, a ...
0
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1answer
549 views

Communication between Box2D and libGDX Stage (Scene2D) running in separate threads

I'm making a physics based 2D game using libGDX and Box2D. I want to move the execution of the simulation out of render thread. I use immutable messages and the BlockingQueue to pass the information ...
3
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2answers
2k views

How would I implement procedurally generated tiles in libgdx?

I'm creating a simple top down Zelda-esque game in libgdx, and I want to implement tile-based dungeons that are procedurally generated, similar to this. Libgdx does have a class called TiledMap which ...
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1answer
278 views

libgdx ActorGestureListener.pan() parameters not moving actor in smooth line

I override the pan method in ActorGestureListener to implement dragging actors in libgdx (scene2d). When I move individual pieces on a board they move smoothly, but when moving the whole board, the ...
2
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1answer
231 views

Using latest TiledMap, how do you get a specific tile from x and y index?

Seems basic enough, but I can't seem to find the answer: I am trying to implement collission detecton and for that I need the properties of the tile the player is currently entering. I am using ...
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3answers
4k views

How do I render a PNG with transparency in LibGDX?

I'm building a simple tic-tac-toe example with LibGDX. I have simple images: cross, circle and board, all pngs created with GIMP with a transparent background. How can I render them as a Texture with ...
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2answers
257 views

How can I make my sprite jump up and move forward at the same time?

I'm trying to make a sprite's movements work. For some reason, he can only jump and then move, or move and then jump, but never at the same time. I'm using InputProcessor and a TiledMap system. ...
3
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4answers
380 views

How can I support retina graphics in libgdx?

I'm not sure if I'm missing it somewhere or if this just doesn't exist, but I'd like to support "retina" graphics on desktop displays that support them (like the newer MacBook Pro), but I can't find a ...
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1answer
763 views

Handling XBox 360 Controller Connections in LibGDX after Game has Started

I am currently making a game with the java library LibGDX and want to add XBox 360 controller support using the GDX-Controllers extension. At the moment I have a setup where I create a listener to ...
2
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1answer
309 views

LibGDX strange camera behaviour

I'm currently doing my final assessment for my study Game Development. I'm currently facing a real weird (maybe explainable) result from my camera. I just set up my scene with alot of tiles and a ...
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0answers
1k views

LibGDX RPG walking animation [closed]

I've been trying to nail down a walking animation with libGDX. I'm making an RPG with the character that can move up, down, left, and right. I have this movement in a spritesheet. I've been ...
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3answers
407 views

How do you create your own tileset?

I'd like to create a 2d platformer and I understand that using tiles helps you a lot. I think many use the map editor "Tiled" but I can't find anywhere how do you make your own tileset from a given ...
2
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2answers
172 views

Replicating no. of sprites without letting the app to slow down and crash

Is it possible that if I'm making a a simple drag-n-drop game, does making a new sprite via constructor with texture as a parameter makes the game slower and depletes more memory until it crashes or ...
3
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0answers
92 views

Using GLES 2.0 producing a blank screen after the game is quit in LibGDX [closed]

I am making a 2D tile based game in LibGDX. I am using Scene2D Stage in my Screens. I am also using GLES2.0 in my game. When I changed from GL10 to GL20. On pressing the back button, my game is ...
3
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2answers
501 views

How do I crop a camera's viewport?

I'm making an Android game using LibGDX. I would like to render a cropped version of the camera's viewport. Here's an original camera view (in 3ds max): I can get the same view in LibGDX without ...
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vote
1answer
857 views

Two pass blur shader using libgdx tile map renderer

I am trying to apply the following technique: blur effect using two pass shader to my libgdx game using the OrthogonalTiledMapRenderer. The idea is to blur the background wich is also a tilemap but ...
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1answer
1k views

Loading TextureAtlases using AssetManager in LibGdx

I want to use AssetManager in LibGDX to load my TextureAtlas. But I am not getting it. I have actually one large 2048 x 2048 px image, that I am creating in Predator. and then I am using the regions. ...
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2answers
4k views

How can I convert a tilemap to a Box2D world?

I want to use Box2D physics and lighting with a .tmx map. How can I "convert" a tilemap to Box2D world? My basic idea is to go through the tiles on the map and create an object for them in Box2D. I'm ...
0
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1answer
117 views

When to use class/objects for graphics [closed]

I am fairly new to game development, but I have a good programming background with object oriented programming. But with games, I do not know when I should use an object (or class) for an entity on ...
2
votes
1answer
338 views

libgdx default saving mechanism for box2d world

I want to save my game in libgdx, and I have no problem using Kryo to save everything, except the box2d Worlds and the RayHandlers from box2dlights - these are not Serializable and do not have default ...
2
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1answer
2k views

What are the differences betwen Texture, TextureRegion, TextureAtlas, Sprite and Image in libgdx?

I've searched around for tutorials. I've seen people using the above classes to load images. As according to my understanding, all of the classes can read in a non-power of two images, ...
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1answer
105 views

Is it possible to display no white images/sprites when using the latest Android OS?

Was it okay to use Texture.setEnforcePotImages(false) in order to disable conditional width and height pixel size that requires power of 2? I'm planning to sell the game app at Google Play. I want to ...
2
votes
1answer
213 views

Universal Tween Engine - simulating time T instantaneously

I have a circuit in Universal Tween Engine in libgdx and I want to make several entities follow this path , each behind the other, like body pieces of a snake. The problem is that I need to find ...
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0answers
34 views

2D collision beetween a sprite and an array of sprites [duplicate]

I am creating a simple Android jumper (think Doodle Jump or Abduction) using libGDX so I can get started in game programming. My problem is that I need to figure out a way to check for collision ...
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0answers
628 views

How to draw table border in libgdx?

I'm new to libgdx and I'm currently working on TableLayout and wondering how could I draw borders for each cells. I've done some research on this but it seems that I could come up with this solution ...
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2answers
1k views

Problem with AssetManager while loading a Model type

Today I've tried the AssetManager for the first time with .g3db files and I'm having some problems. Exception in thread "LWJGL Application" com.badlogic.gdx.utils.GdxRuntimeException: ...
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2answers
1k views

SpriteBatch being drawn outside of Stage?

Currently working on my first game, though running into some problems with libgx and screen aspect ratio. What I have is a Stage which contains things like menu buttons etc, and the rest of the game ...
3
votes
1answer
287 views

Why is my Tiled map distorted when rendered with LibGDX?

I have a Tiled map that looks like this in the editor: But when I load it using an AssetManager (full static source available on GitHub) it appears completely askew. I believe the relevant ...
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2answers
717 views

RPG Equipped Item System

I'm making a 2d rpg with libgdx and java. I have an Inventory class with an Array of Items, and now I want to be able to equip items onto the player. Would it be more managable to do have every item ...
2
votes
1answer
204 views

Libgdx Palette Swap

I'm developing a game using the Libgdx library. I'm trying to implement a very simple palette swap functionality (basically just complete recolouring of some areas, I don't even need to have various ...
5
votes
2answers
419 views

Running multiple box2D world objects on a server

I'm creating a multiplayer game using LibGdx (with Box2d) and Kryonet. Since this is the first time I work on multiplayer games, I read a bit about server - client implementations, and it turns out ...
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1answer
571 views

Navigating Libgdx Menu with arrow keys or controller

I'm attempting to make my menu navigable with the arrow keys or via the d-pad on a controller. So Far I've had no luck. The question is: Can someone walk me through how to make my current menu or ...
8
votes
2answers
523 views

How can I implement a scanline effect?

I am working on an old-school platformer in libgdx and I want it to have a "scanline" effect, like this: My first attempt was to make a little texture and draw it on a full-screen quad. I used two ...
1
vote
0answers
178 views

Cylinder scrolling / wrap-around world using shaders?

I am making a 2D game using OpenGL ES 2.0 (libgdx), where the world will wrap-around itself on Y-axis. Apart from implementing the "modulo" method in my rendering code, I'm wondering whether it's ...
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0answers
63 views

Need to join 2 bodies via weld joint but not on center of mass

I have successfully join 2 bodies via weld joint , but my problem is I want to join corners of bodies not on centre of mass. Is there any way to achieve this? Above image consist 3 polygon body that ...
7
votes
1answer
265 views

Problem when scaling game screen in Libgdx

Currently, I'm able to scale the screen by applying this bit of code onto an OrthographicCamera Camera.setToOrtho(true, Gdx.graphics.getWidth() / 2, Gdx.graphics.getHeight() / 2); But something ...
1
vote
1answer
459 views

Movement of body after applying weld joint

I have two rectangular bodies. I've applied Weldjoint successfully on these bodies. I want to move that joined body by applying linear impulse. After weld joint, these two bodies becomes single body ...
2
votes
1answer
186 views

How to flip 2d skinned quadruped character?

just would like to know is flipping 2d skinned character with one of scale axis good way for left or right movement(flipping direction and animation)? Normal direction would change.(UPDATED) for ...
1
vote
1answer
184 views

Pixmaps, ByteBuffers, and Textures…Oh my

My ultimate goal is to take a specific region of the screen, and redraw it somewhere else. For example, take a square from the upper left hand corner of the screen and redraw it on the lower right ...
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votes
1answer
881 views

libgdx intersection problem between rectangle and circle

My collision detection in libgdx is somehow buggy. player.png is 20*80px and ball.png 25*25px. Code: @Override public void create() { // ... batch = new SpriteBatch(); playerTex = ...
3
votes
1answer
355 views

Why is SpriteBatch.end() generating null pointer exception in this code?

I am getting a null pointer exception using libGDX that the debugger points as the SpriteBatch.end() line. I was wondering what would cause this. Here is the offending code block, specifically the ...
0
votes
1answer
1k views

coloring box2d body in LibGDX

I want to color polygon of box2d in LibGDX. Found below useful class for that. http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/graphics/glutils/ShapeRenderer.html But, it is not ...
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vote
1answer
81 views

All libGDX input statements are returning TRUE at once

I'm fooling around with Box2D and libGDX and running into a peculiar problem with polling for input. Here's the code for the Screen's render() loop: @Override public void render(float delta) { ...
1
vote
1answer
351 views

Why doesn't RGB565 lead to a smaller memory footprint on Android?

I'm using LibGDX for my game. I'm loading 9 bitmaps into memory at once using the AssetManager, about 512x512 pixels each on average. TextureParameter texParam = new TextureParameter(); ...
0
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1answer
481 views

Using native code with Libgdx, (Raknet)

I was searching for a game engine (Java- maybe C#) with built-in real time networking library to develop 2D cross platform (Android - iOS) multiplayer game. Actually I have not found well suited ...
2
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2answers
2k views

Libgdx OrthogonalTiledMapRenderer not rendering map properly

I'm using a little hack to change the coordinate system to the one i'm accustomed to (left and up is negative and right and down is positive) but this causes the tiled map renderer to render the map ...
0
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2answers
670 views

Libgdx InputListenner not working

I've added an InputListener to my libgdx actor and I've added the actor to the stage. The stage (and all of its actors) gets drawn just fine. The problem is my actor doesn't seem to be receiving ...
2
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0answers
121 views

Unproject considering parallax depth

How can I take screen coordinates (or alternatively world coordinates on the 'primary' parallax plane) and find out what world coordinates they translate into when taking parallax depth into account? ...
3
votes
1answer
681 views

box2d raycast filter category

I am trying to filter a category in my ray casting (jBox2D within libGDX), which should return the closest object that does not belong to the category LEVEL0. I've tried a plethora of approaches, but ...
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0answers
129 views

Rendering tile maps for mobile devices

Hitting a bit of a roadblock with my game's development and I'm just looking for some outside advice. I'm trying to render a tilemap for my mobile game (Android) and I'm using LibGDX. Now, here's ...