LibGDX is a cross-platform Java game development framework based on OpenGL (ES) that works on Windows, Linux, Mac OS X, Android, iOS and your WebGL enabled browser.

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1answer
233 views

Sounds overlapping when playing too many at the same time

I am pretty novice when it comes to game sound management, so excuse my ignorance. I am having an issue when playing too many sounds at the same time where some sounds stop playing, or doesn't play ...
0
votes
1answer
45 views

LibGDX buttons bounds are wrong

I am making a simple gui in libgdx and run into this problem ; when you click on the button it's bounds (?) are wrong since if I click under it, the game registers it as a click. On the other end, ...
1
vote
2answers
263 views

How to make sprite move in any direction?

I have an arrow sprite that rotates based on where my cursor is pointed, I can only make it move up,down,left and right.How about in a diagonal way? //this is the rotation nt x=Gdx.input.getX(); ...
3
votes
3answers
977 views

2D - Smooth lighting with shadows for a tile-based game

for the last week or so I have been completely stuck on trying to implement efficient lighting. I've been researching and experimenting and I've looked everywhere that I have been capable of finding, ...
2
votes
2answers
770 views

How can I add extensions to libGDX

I had a problem with my Font in a game I am developing in libGdx. After some googling I was instructed to use the following code: private void createFonts() { FileHandle fontFile = ...
1
vote
1answer
184 views

Scene2D: How to use Image.setDrawable()

I'm trying to change the texture of an Image actor on my Scene2D stage, however I can't seem to get it working. It seems like setDrawable() doesn't really do anything. For example, this will make ...
2
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0answers
53 views

balloon ligher than air with libgdx, impementation of FixtureDef.density, gravityScale, linearDamping?

I use libGdx/box2d's physic. My intention is to create a balloon filled with helium (a body, what hovers above a surface, if we apply a little force to it - it moves fast but not far, if we push ...
1
vote
1answer
294 views

How to scale LibGdx TextButton?

Apparently textButton.setScale() is not working. Even when the scale is set to 0.1, the button is displayed in it's original size. How to properly scale a TextButton in LibGdx? The official ...
1
vote
1answer
41 views

libGDX sprite image not updating Event Handling InputHandler

I created a separate inputHandler class implementing InputProcessor. I'm using Event Handling (libgdx github page: https://github.com/libgdx/libgdx/wiki/Event-handling) public class inputHandler ...
1
vote
1answer
302 views

libgdx continuous movement while touch and hold (even after jump)?

So, I have these buttons where I have implemented a method to handle 'touch and hold' (without polling). If the player touches and holds the walk button ..it will keep walking till the button is ...
2
votes
3answers
523 views

LibGdx TextField - Hide Keyboard when not focused - How to?

I'm creating a registration screen for my game. I implemented textfields and input is getting correctly. But when I click elsewhere after text is entered, the keyboard stays visible and does not hide ...
1
vote
2answers
132 views

How can check a collision between 2 non-axis aligned boxes?

I'm making a simple and easy game and I need to detect the collision between 2 boxes. It only needs to return trueor false, no physics involved. I started working and couldn't find an algorithm that ...
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0answers
40 views

Design a grid with draggable Actors

A quick overview about what i want to do. I want to make a grid 5x5 centered in the screen in which each cell can contain an Actor that can be moved in another cell. An Actor can be of any type, ...
1
vote
1answer
65 views

Playing with hashmap in drawing

I'm developing a game in Java for Android, using LibGDX. In my render(), between the batch.begin() and batch.end() I'm running through all the game objects and draw them. Every game object is stored ...
2
votes
1answer
102 views

How do I query a LibGDX Box2DLights “light” and “dark” regions?

I have lighting implemented using Box2dLight. I want to update/render things inside the player's PointLight area. Stuff in the dark area should not be rendered. How can I find which areas are lit or ...
0
votes
2answers
116 views

2D Collision Response

I am trying to implement collision response in my libgdx game. I'm using Rectangle objects as my bounbing boxes. This makes collision detection very easy, however I can't quite get the response ...
3
votes
1answer
197 views

Using deltaTime and Frame Rate Independence

I'm working on one of my first games and I've read that linking your game logic to FPS is bad because it will run differently at different FPS (obviously). I have already made some of the basic game ...
0
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0answers
139 views

NullPointerException in android.app.Activity.onCreate(android/app/Activity.java:874)

I'm trying to get libGDX 1.6.1 to run on Android via Ruboto. So far, I: Generated a new libGDX app using the app generator Got the desktop app to run (Java) Got the android app to run (Java) ...
2
votes
1answer
211 views

LibGDX viewport touch coordinates transformation

I've been trying to get LibGDX's viewport and camera unproject() to work and so far none of the tutorials/answers I've found have worked for me. I have a game window of 840x480 units with ...
2
votes
0answers
402 views

Libgdx performance on old devices

I'm developing a game in Java for Android, using LibGDX. I'm using Nexus 5 to test my game most of the time and it works great (Minimum FPS it gets is 57 out of 60). Recently I ran my game in Galaxy ...
0
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0answers
112 views

Box2D collision between dynamic body

I'm implementing Box2D for my 2d top down LIBGDX game and i have some struggle with two dynamic body. Currently, my two bodies are created that way : BodyDef bodyDef = new BodyDef(); ...
1
vote
1answer
254 views

libGDX: Why doesn't Gdx.input.isKeyJustPressed() work?

I'm trying to use the method Gdx.input.isKeyJustPressed() to check if the Android BACK button was just pressed. I don't want to use the Gdx.input.isKeyPressed method to avoid multiple calls. Here is ...
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0answers
62 views

How to “pause” stage actors listeners

I have a problem with multiple stages and listeners in libGDX. I have GameScreen with gameStage (contains game elements), uiStage (score label and pause button) and pauseStage (resume, restart and ...
0
votes
1answer
50 views

I can't understand the batcher.draw at libgdx [closed]

here is the code: batcher.draw(birdMid, bird.getX(), bird.getY(), bird.getWidth() / 2.0f, bird.getHeight() / 2.0f, bird.getWidth(), bird.getHeight(), 1, 1, ...
2
votes
1answer
280 views

How can I add a transparent overlay to a UI in libGDX?

I am attempting to use the following code shapeRenderer.begin(ShapeRenderer.ShapeType.Filled); shapeRenderer.setColor(3,3,3,.3f); shapeRenderer.rect(0,0,gameWidth,gameHeight); ...
1
vote
2answers
261 views

LibGDX - Managing a Minimap

I'm making a top-down strategy game so I thought a minimap is a must. I'm using Scene2D to display my GUI and since the minimap is technically a part of the GUI, I used the stage camera to position ...
1
vote
1answer
149 views

What size should i use for my game design?

i am currently working on a android game by using libgdx and i am designing graphics with ps for it. I want my game looks the same quality for different screen sizes but i dont know in which size ...
3
votes
1answer
138 views

Does libgdx implement the game loop for you?

Initially, I assumed that the developer has to implement the game loop because libgdx is a library - not an engine. But then I found out that Graphics has getDeltaTime() and getRawDeltaTime() so I ...
6
votes
1answer
297 views

Why does flipping 1 texture region cause an identical texture region to also be flipped? (libGDX)

Sorry for the bad title. I didn't know how else to explain it. The following is a portion of my code: public class AssetLoader { public static TextureAtlas spriteSheet; public static ...
1
vote
1answer
64 views

libgdx Vector.cpy question

Why do people use this: public void set(Vector2 v) { this.vector2 = v.cpy(); } insted of just using: public void set(Vector2 v) { this.vector2 = v; } What I don't know that I should ...
1
vote
1answer
129 views

Error in projecting coordinates from FitViewport to screen in LibGDX

i'm using a FitViewport to render my "game world". Viewport virtual dimensions are fixed 400x240. I use viewport.unproject method to scale input touches from screen coordinates to world coordinates, ...
1
vote
2answers
100 views

Scale smaller resolution to full resolution libGDX

Short question about the scaling in libGDX. At the moment i have a application with the resolution 480x320. I define this in the main method of the desktop launcher. My whole application is now ...
1
vote
1answer
146 views

Libgdx libraries are missing from gradle cache after I reinstalled my system (IntelliJ)

I reinstalled my OS (Linux Mint) today and copied all my projects over to a flash drive. After I was done setting everything up I copied 'em back over again and started to fix the problems (caused by ...
3
votes
1answer
124 views

Should I initialize a Box2D World per Level?

I'm using a LevelManager to load Tiled maps in my libGDX game, which stores: Static: final Size of map in Tiles final Size of map in Pixels final Size of an individual tile TiledMap ACTIVE_MAP ...
1
vote
1answer
88 views

AssetManager proper usage in libgdx

I am a beginner in libgdx and I am coding a simple game. This game is like a word puzzle where each letter is a texture. Before loading the first level I need to load into memory 26 textures, one for ...
1
vote
1answer
123 views

Collision with player following mouse

I'm making a RPG with libGDX. I've loaded a TiledMap and now I'm implementing the player movement. The view is top-down. In my game I want two ways of input: one is using the ARROW keys to move the ...
0
votes
0answers
129 views

3D Model is existent, but not rendering in LibGDX

I'm trying to render a simple model in libgdx. I tried ObjLoader, G3DLoader, and Asset loading but nothing works. I know the Model is actually there because when using a different batch besides the ...
0
votes
0answers
30 views

Raycast trouble

i'm having some trouble with the RayCast. I'm raycasting from the player position and my mouse position. I have this situation : http://i.imgur.com/h7iplnY.png (the white line is a representation of ...
2
votes
1answer
206 views

Drawing textures off screen optimization required?

I recently started using LibGDX and I am wondering if I have to optimize my code when drawing textures/sprites off-screen, just like I used to do with XNA. My biggest concern here is specifically ...
3
votes
1answer
264 views

HTML/JS publish LibGDX

I want to publish an app created with libGDX (HTML/JS publishing). Here are the steps I am doing. Right Click on the Project -> Google -> Gwt Compile -> Compile. After the compilation there is no ...
1
vote
1answer
239 views

LibGDX : Textfield input type

I want to change TextField input type . When I click on the textfield the android keyboard appears with all the symbols , but I want only numbers and dot (.) . TextFieldStyle textFieldStyle = new ...
1
vote
2answers
197 views

Static spawning locations for players, creatures, items in Tiled map editor

I am using Tiled map editor. I am trying to add static spawning locations (x,y) for various entities (lets say 15) in my game. The best idea I had so far is something like this: I am using a ...
0
votes
1answer
838 views

Tiled object layer draw sprites

I added some tiles to some object layers in my tiled map and now I want to draw them in game. I tried to render everything with mapRender.render(); but the tiles doesn't show up. Then I tried to ...
1
vote
1answer
395 views

How to use mipmap with TextureAtlas and AssetManager

I searched on the Internet but couldn't find the way to use mipmaps with libGDX TextureAtlas. I want atlas instead of normal textures because as far as I know mipmap supports only 2^n width and height ...
3
votes
1answer
160 views

Running and Jumping using Box2d and libgdx

.this is my first trial on making a 2d game and currently struglling how to run and jump smoothly. My problem is when the player keep pressing on left or right botton then jump. the player won't jump, ...
3
votes
2answers
181 views

LIbgdx android app remove fullscreen and show titlebar

I am developing an app using libgdx and i dont want the app to go fullsceen and i also want to show the title bar but the app goes to full screen and hides title bar instead of all efforts. here is ...
0
votes
1answer
343 views

LibGDX: Colllisions between bullets and enemies in arrays

I am writing a "Gauntlet" style game. So far I have managed to successfully detect collisions between my player object and my ghost enemy objects, and when they collide they drain the player's energy. ...
1
vote
2answers
206 views

Stop rendering hidden objects libgdx

I currently am hiding objects that are not in the frustums view. However, some objects are still being rendered that are in the frustums view, but are hidden. My goal is to not render objects that ...
3
votes
1answer
94 views

Custom Coloring of Tileset Characters

Games like Dwarft Fortress and Dungeon Crawl Stone Soup are drawing their boards using tiles from a tileset image (I think?). I know you can do color keying and replace the background color with ...
3
votes
2answers
276 views

LibGDX - Can't read .ttf file when running Android configuration

when running or debugging my game on android device, i get this error in the logcat: com.badlogic.gdx.utils.GdxRuntimeException: Error reading file: data/fonts/myFont.ttf (Internal) which is ...