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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262 views

Switch beetween Screen on LibGdx application

i have set main class like this: public class MyClass extends Game { MenuClass menuClass; ActionGame actionGame; @Override public void create() { menuClass = new MenuClass(this); ...
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2answers
343 views

Laggy empty project at 60FPS

@Override public void create() { batch = new SpriteBatch(); img = new Texture("badlogic.jpg"); } @Override public void render() { Gdx.gl.glClearColor(0, 0, 0, 1); Gdx.gl.glClear(GL20....
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51 views

Setting resizable to false in LibGDX

I have a small working game prototype. I want to do something like LwjglApplicationConfiguration cfg = new LwjglApplicationConfiguration(); cfg.resizable = false; But I get "...
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2answers
52 views

With LibGDX how is it okay to use Fonts statically?

I am working on a engine/framework/game in LibGDX as a baseline for future Java games (really lightweight and stuff, just gamestates, entity framwork, physics, font, etc), but I am unsure of how I ...
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1answer
54 views

How to store level data in a libgdx game if implementing ECS pattern

I am writing a beat'em up like game in Libgdx while following the ECS pattern brought up by ashley. For setting up the stage, I am using TileMap and Tiled. An object layer for collisions, and a tile ...
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1answer
34 views

Libgdx How to overlay two images on Table

I'm trying to set the player image inside the circle of the bars. I've tried to use stack, to position it topLeft but it does not work. Stack stack = new Stack(); healthbar = new Image(new ...
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4answers
717 views

Confused about using libGDX dispose()

Can anyone please help me to understand the proper use of the dispose(). Does dispose() get called automatically or do I have to make a call to it? In a game I'm writing, I use a texture atlas and ...
3
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1answer
112 views

LibGDX: Is it necessary to set a stage as an input processor when creating a touchpad?

I mean, I've been searching it, they always use set a stage as an input processor after they had added the Touchpadto the Stage because it extends from Actor indireclty(it extends from Widget that ...
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2answers
228 views

How do I induce collision events in LibGDX 3D?

In the code below I've put an example of something I want to do. I have the camera and I want it to stop moving whenever it hits one of the boxes, how do I do this? public class Main extends ...
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1answer
61 views

Libgdx: move img from one point to another?

I'm trying to make an image move towards another point. I only have the current X/Y and the destination X/Y + Speed. That's it. public void Draw(SpriteBatch batch, int goalX, int goalY){ destX = ...
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1answer
22 views

LibGDX Image Outline Help

As I was working on some art for my project, I decided that I should add an outline around some objects. So I tried my method; which was to create a second image slightly larger than the first, make ...
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1answer
169 views

Libgdx and gdx-ai: How to implement wander behavior?

So I follow the original gdx-ai documentation and created 2 circles to test Steering behavior. The image shows arrival behaviour but I am still quite lost about how they work. Screen class: public ...
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2answers
48 views

Isometric map black screen

I am trying to create an isometric map and I am very new to it. Please see the attached example map. While rendering it I've noticed that when my actor reaches the edges of the map the player can see ...
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1answer
73 views

2D BoundingBox Collision Detection Problem

I implemented collision detection into my game (using Bounding Boxes) The character is floating above the blocks instead of standing on them. I know what is happening, but I can't figure out how to ...
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1answer
123 views

Libgdx: Check collisions in Stage among actors

My goal is to check collisions among the actors that are in the Stage. My question is: is it necessary to maintain a list for each type of actor I have? Doing that I get 3 problems, 2 bad design ...
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1answer
33 views

LibGDX: Transition scale bitmap font

I'm trying to create a Minecraft like quotes on the menu screen of my game. I'm using BitmapFont to draw the text on screen but i don't know how to make that scale up scale down effect. This is what ...
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1answer
60 views

How to rotate an image on touch using RotateToAction in libGDX?

I want to rotate my image on touch but it never applies action, I'm using RotateToAction to achieve this. class actorCark extends Actor { Texture texture; Sprite sprite; Global g; ...
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1answer
30 views

libgdx - Should I use OOP in ECS framework? [closed]

For example I have OOP class of Bullet and I have created the pool and factory. Should I convert it to componet based? Like BulletComponent, then handle by BulletSystem? by the way I'm using Ashley ...
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1answer
127 views

Change screen dimensions in libgdx in HTML

Can i change the screen dimensions in libGDX in HTML? If I inspect the element (the game) in Chrome and I change canvas width or height it changes the screen dimensions, but I don't know how to do it ...
3
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0answers
18 views

Tile Texture If Dimensions of Sprite Are Larger Than Texture

I have a sprite that acts as a wall in a game that I am building. I would like to have the brick texture repeat itself instead of stretch to fit the height of the screen. I tried: Texture ...
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1answer
491 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. ...
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2answers
37 views

How would I make my position interpolation stop once the destination is reached?

I would like to implement tile-based grid movement and I've heard that linear interpolation comes handy in the implementation process. I've tried to use it but I'm not sure how to make it stop once ...
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1answer
65 views

Why does every texture drawn cause a new draw call?

I'm currently working on a 2d sandbox tile game in LibGDX and I noticed I had 700+ draw calls. So checked my code and I could not find anything that would cause a new draw call. All the tiles are ...
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0answers
19 views

Rectangle in object-layer has wrong coordinates in game

I extended the SuperKoalio LibGDX Example about an Tiled Object Layer in the Tiled Level-Editor and draw a rectangle on this layer. Now I would like to draw this rectangle in my game using the ...
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1answer
88 views

How to split a screen in half using LibGDX without scaling?

I am currently working on a racing game with libGDX and I need to split the screen in half for a two-players mode. (Player 1 in first half and Player 2 in second half). I already have Camera1 that ...
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1answer
478 views

How to use Java 8 with Lib GDX in IntelliJ?

I have set the jdk to Java 8 and I have modified all the build.gradle files in my project to have sourceCompatibility = 1.8 instead of 1.6. My problem is that while it does work on Desktop it doesn't ...
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33 views

Libgdx final stage of adding admob to game

I had finished my game and wanted to add Admob ads to the game. I followed all the instructions in Admob in Libgdx and It's working very well, and the ads are shown properly, I just wanna be sure ...
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2answers
841 views

Move Box2D body towards mouse click

In a top down game using Box2D, I would like the player's Box2D body to rotate towards the mouse click, and then move to a point on mouse click (move, not teleport). I have worked out the rotation ...
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1answer
141 views

LibGDX: How to detect remote button press for Android TV?

On Android TV, I need to be able to detect the remote control centre button to start the game. I tried: if (Gdx.input.justTouched() || Gdx.input.isKeyJustPressed(Input.Keys.SPACE) || Gdx.input....
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2answers
39 views

LibGDX - Bundling Files

I have 3 files. A JSON file, a PNG file, and a TXT file. Is there any possible way I can put all three inside a common file with a custom extension? (for example "fileName.abc") I searched the web a ...
4
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1answer
320 views

LibGDX Box2D TileGame Efficiency

I am trying to implement Box2D into my top down tile game in LibGDX. Each world consists of a set of chunks, and each chunk is 16 tiles wide/long. The maximum/minimum chunks loaded at one time is 9 (a ...
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20 views

make scrollable list in circular shape using libgdx

I am developing a game using libgdx. I am stuck at making a list in the shape of a half circular which is also scrollable. This is a sample image (not circular) which I want to be in similar shape ...
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36 views

LibGDX - Parallax scrolling background help

I've been trying to do a parallax scrolling effect on my 2D side-scroller game, to give the illusion of depth, by having layers at different speeds. Basically, I have a camera that follows the player....
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1answer
113 views

libGDX upload z-axis of sprite to graphics card

Background: I want to obtain each fragments position via vertex interpolation to then calculate the light vector for phong shading (L = [Fragment pos] - [light source pos]). Problem: At the moment I ...
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0answers
26 views

Uniform Interpolation?

In currently developing a little local Multiplayer game. In using Interpolation to make the player and entitys move smoothly but there's one problem, im using Interpolation, that looks like this ...
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2answers
86 views

Round position to center of current grid position

The title may not make sense, nor may the question - I'll try nevertheless. I'm attempting to make a game similar to The Powder Toy. Essentially, this is a physics simulation game, where the users ...
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0answers
15 views

LibGDX - button change image on hover over time

As we all know, LibGDX has a TextButtonclass which has a TextButtonStyle and ButtonStyle. The style has some parameters: up - an image which is shown normally as a button background down - shown ...
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9 views

LibGdx scene2d Table getRows() returns 1 while i have 2 rows

I am trying to make a puzzle game in which i build the level with Table layout from libGDX scene2d.ui. When building the table i know for sure there are 2 rows (2 rows do pop up on my screen) when ...
2
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1answer
278 views

Rotating towards a point in Box2D

I'm using Box2d as my physics engine and I'm trying to solve what would normally be a simple problem but what has become a nightmare for me and preventing me from finishing my app. (6 months work) I'...
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3answers
99 views

LibGDX - Trying to make a radar-like display

i have an interesting question about geometry. I have two or more moving objects outside of my stage's viewport (blue and red circle in the image below), which i want to point at with two arrows on ...
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2answers
166 views

Black screen when launching on phone

I am coding a game in libgdx. While adding the background I used the html module to watch the results fast and easy on my computer. But when I try to see it on my phone I just get a black screen. My ...
0
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1answer
67 views

libGDX : Paint And Remove Color From Actor with touchDragged

I created two-dimensional array of Button actor, then I added new ClickListener() { touchDragged } as the following code: buttons = new Button[3][3]; for (int row = 0; row < buttons.length; row++...
2
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1answer
1k views

Changing Box2D Body from Kinematic to Dynamic after contact

What is the correct way to change a Kinematic body into a dynamic body? context - I have a dynamic body as a projectile which has to be fired at a kinematic body (it is kinematic because i am ...
4
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2answers
1k views

Matrix rotation wrong orientation LibGDX

I'm having a problem with matrix rotation in libgdx. I rotate it using the method matrix.rotate(Vector3 axis, float angle) but the rotation happens in the model orientation and I need it happens in ...
3
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1answer
185 views

Creation of a tiled map editor polyline in box2d is not working correctly

I'm currently trying to create a box2d polyline object in my libgdx game, but it's not working as expected. To get a better picture of my subject, have a look at how it should look like, and how it ...
1
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1answer
267 views

libGDX new TextureAtlas(filename) and new Texture(filename) drawing stale image data

I'm trying to draw an image using libgdx but no matter what I do, libgdx seems to insist on drawing a portion of an image I had loaded and used in an earlier game screen. In my current game screen (...
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1answer
96 views

How to handle two players playing on one keyboard with Box2D (LibGDX)?

I'm making a racing game with LibGDX and Box2D. I've been using this tutorial to implement the basic physics, and it works properly. My main problem is to implement two different sets of keys (UP-...
3
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1answer
148 views

Scene2D Actor walking animation?

I used to extend my Player/Entity class with Sprite, that way I could create a walking animation using SetRegion and super(stilldown.getKeyFrame(0)); I've recently started porting everything over to ...
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1answer
47 views

Libgdx, actor touchlistener not working

public class Main extends ApplicationAdapter { SpriteBatch batch; OrthographicCamera camera; Stage stage; Image greyback; Image circle; private float width; private float height; @Override ...
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0answers
12 views

LibGDX Render Mesh

I have a Mesh mesh. I'd like to render mesh. However, its method for doing so is render(Shader shader, int primitiveType). I don't have a shader. To get a shader, the thing to do is new Shader(...