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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libgdx box2d car wheel circle collision with ground

I'm creating game similar to hill climb racing. I have created car (which is basically polygon with two circles) and ground generated by sinus. Now here is the problem: when my car try to climb in ...
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1answer
22 views

Libgdx, Gradle, android package naming problem

I'm upgrading my libgdx project to make use of all the new Gradle stuff. However I changed the package namespace from the default generated by gdx-setup but that hasn't worked: when I debug to my ...
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1answer
83 views

Libgdx AtlasTmxMapLoader with multiple tilsets

I am working on a Libgdx game which loads Tiled maps. The current map I am working on makes use of two tilesets, one for shadow/light and another for terrain and buildings. The general process I do, ...
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47 views

Libgdx Box2D random positions and intervals falling bodies

I need to make that objects fall from the top of the screen random intervals and positions. Here's my code where I create lot of objects and add them to ArrayList private void createBalls() { ...
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1answer
151 views

Too many if statements cause lag? [closed]

I am trying to make a vertical scroller game with collision tiles on both sides. I'm using Libgdx and android studio. The problem is that i have made every tile as an object with a rectangle for ...
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25 views

Creating & loading animation from one class in libGDX

i'm new to libgdx and i wonder if i can create all the animation for my game in just one class so i can just call it to my main game screen class,if it is possible can someone teach me how to do this? ...
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29 views

Libgdx tiled map not showing

I'm using a HashMap structure to store and load my maps made in tiled. Currently I have two and I am able to go from mapOne to mapTwo with no problems. But when I go from mapTwo to mapOne, mapOne ...
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1answer
131 views

Convert transform from world to local space

I have a hierarchical node system. Given a world space transform, I need to obtain the transform for a specific node in local space. My Node class has the following method. public void worldToLocal(...
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2answers
6k views

Handle Input Processor in Device Back Button and Button as Actor

How to handle a event for both key as well as actor added in the screen? My problem is that at a time only one input processor is available either for button or device back button. How can I set input ...
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176 views

LibGDX - How to draw a filled rectangle behind a text?

I'm new in LibGDX and I want to create a grid based game. Every square will have a rectangle and a text and the background color of the rectangles can change during the game. The problem is when I ...
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1answer
62 views

How can I communicate between libGDXand the Android Studio Java files?

The reason I'm asking is because I wanted to create a game and I know I could use Scene2D to create the UI but as far as menus go I wanted to use the tools in android studio to at least create a menu ...
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How do I make an on-screen HUD in libgdx?

I'm new to libgdx, and I am finding I am getting stumped by the simplest of things. It seems to want me to do things a specific way, but the documentation won't tell me what that is. I want to make ...
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My characters do not reverse their velocity, why? libGDX

I have been programming my game in libGDX for a while now and even watched a tutorial on youtube from Brent Aureli. The game I'm going for is kinda like Super Mario Bros but there is one problem that ...
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65 views

LibGDX: Problems creating custom actor

I am creating a custom class that extends from Actor,just like this: public class MyActor extends Actor { ProgressBar bar; Label nameLabel; TextButton button; public MyActor(String name, Skin skin){ ...
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1answer
61 views

How to make a ball hit many tiled circular objects in LibGDX

Hey guys I've been learning to make games with LibGDX. I did a tiled map in Tiled and the rest of code in java using Android Studio. I could make a ball bounce on the flour using Box2D, but I can't ...
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55 views

HashMap or LinkedList

I'm working on a 2D game for Android using LibGDX in Java. In my game I got lots of enemies, bullets and other stuff. I hold a hash map, which every cell holds a reference to an array list of that ...
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2answers
72 views

How can I make libGDX text buttons look like clickable buttons?

I have this problem with my game where UI build a nice menu and other stuff with TextButtons and labels, but it doesn't look nice because it's mostly displaying the text of the buttons (which don't ...
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1answer
338 views

libgdx universal tween engine how to control the tweening speed?

How can i control the speed of a tweening sprite? Here is the code: in create () /*try tween*/ w = Gdx.graphics.getWidth(); h = Gdx.graphics.getHeight(); ...
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43 views

Libgdx tiled map collision scale problem

I followed Dermetfans tutorials on youtube to make a collision tile map for use in Libgdx and I think I have some scaling problems related to the camera. I'm loading the map and the bottom left corner ...
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1answer
59 views

Make a sprite jump to a certain direction in libGDX

I was wondering how you can make a sprite jump to a certain direction in libGDX just like the brick does in the famous mobile game "Amazing Brick' I want to make my sprite jump up a bit to the right ...
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1answer
6k views

Game Update in Libgdx

In libgdx, the game loop is the render() method. But why is that, and is there a way where I can make an update() method that is called 60 times a second? As in the update() method, I would add the ...
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2answers
276 views

Profiling LibGDX game with GLProfiler

I am trying to profile my LibGDX game, It runs on 60FPS on PC and 42-45 FPS on MY mobile phone. Either I improve performance and raise it to 60, or lock it at 30 (I don´t want to do this). I have ...
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2answers
104 views

Box2D LibGDX Body.getPosition() and Body.getWorldCenter() problems

I have a problem with my game in Java with Box2D and LibGDX I found out that when I use body.getPosition() it is only half of that of body.getWorldCenter(). The problem here is for me that I use ...
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23 views

Libgdx inaccurate collision detection (no body2d)

So, I am developing a simple 2d game that has no need of body2d or over physics engines. I make my bodies update position by adding a specific velocity to them. The problem arises when I try to make ...
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31 views

Movement for Box2D Bodies

I'm having trouble wrapping my head around something that should be relatively simple. I'm making a breakout clone using LibGDX and Box2D. I'm also using the Ashley ECS. For movement with bodies, I ...
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51 views

Wrong Normal When Models is Close to Each Other

I have a problem regarding my Normal FrameBuffer that creates gaps between models. The image below contains 10x2x10 block (Minecraft style) and one character. The image is outputed through: ...
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57 views

Libgdx easy peer to peer connection

Background Information Since a few weeks I am trying to create a easy libgdx game... Maybe a bit similar to Binding of Isaac... But theres one thing which I want to implement as soon as possible... ...
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2answers
1k views

LibGdx - Move sprite in the direction of other sprite

I'm kind new to LibGdx and I'm still learning. I'm working on a small game project to learn this nice framework. However, I'm having some issues with my game. My game is a top down shooter. There is a ...
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26 views

WorldController won't update in Libgdx

I am trying to refactor the code from the superkoalio. If I take out the updateKoala() and I put it in the new class, name it WorldController, it simply won't update the game when I call it from ...
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1answer
175 views

Libgdx spawning enemies at random time

Hello I want to spawn enemies at certain location but at random time,like for example every 10 seconds. Atm I am spawning enemies whenever I click to spawn heroes but with delay, but I sure does not ...
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23 views

Maintain actor position when switching screen in maximized form Libgdx

I have for now 2 Screens in my Game. First is Loading Screen which loads the assets and then when I click the screen (I added ClickListener) takes me to other screen which is my Login Screen. Problem ...
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1answer
128 views

Make game camera stay inside of tiled map boundaries [LibGDX]

I am creating a little 2D platform game, with the LibGDX framework. So far I have created a simple prototype level in Tiled, and loaded this map into my LibGDX game. I can use mouse and keyboard ...
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65 views

Moving box2D body with texture?

I was following the solution from this http://stackoverflow.com/questions/20180063/box2d-body-with-texture. I ended up getting this working for static bodies. But when trying to get the PolygonSprite ...
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1answer
65 views

how to add “tween-engine-api” to my ilbgdx game

I finished now my first game at LibGDX (I am using Eclipse). I run the game in the desktop launcher and it works. I now want to run my game on android and IOS. From some guides I have read ,I ...
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4answers
516 views

Creating a Melee Weapon in Box2D (libGDX)

I am struggling with how to implement a melee weapon that can swing when a key is pressed. I am imagining two different attacks (stab and swing) I have tried creating two fixtures (character + ...
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0answers
23 views

LibGDX: ActorGestureListener after change position

I have this code to get pan touch inside an Image and it works fine, but when I uncomment this line img.setPosition(100, 100); it doesn't work anymore, why? Texture tex = new Texture(Gdx.files....
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3answers
724 views

LibGDX - Best way of scrolling background

I'm new to LibGDX and i'm trying to implement a screen where i have a guy running and the ground under him scrolling to give impression he is really running in a sidewalk for example. The ground ...
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0answers
49 views

Libgdx - multiple images in a group, best practices - also overdraw question

I am trying to right a card game, that will have an image in the middle, a coloured border and potentially a symbol in the top left. I am using libgdx and a stage/scene2d. The image will change ...
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2answers
294 views

libgdx texture edge blending problem

I have two completely white bitmaps here: They're there, trust me. When I put one on top of the other and scale them down with TextureFilter.Linear I get this: How do I get rid of the dark ...
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80 views

How to dynamically draw a filled polygon with a given array of vertices?

Say I have a simple array of vertices (or floats with every odd index being the X of a vertex and every even being the Y), how could I paint all the area between the vertices? As in, I have maybe ...
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4answers
97 views

Dealing with collisions across adjacent static bodies

The Problem: I have the following setup: A, B and C are rectangular static bodies in box2d. p is a circular dynamic body in box2d. The movement of 'p' is solely controlled by the current gravity ...
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1answer
113 views

Drawing texture with smaller size results in pixelated image, even after applying filter

Can someone please help me resolve this issue. I've tried searching myself and the common answer suggested is to use a TextureFilter. I've tried doing that multiple times but nothing works. My png ...
2
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1answer
175 views

Libgdx problem while converting TextureRegion to Pixmap

I'm developping a Tile base game where I have to generate transition tiles. To do so, I have a method that generate those tiles from 2 existing one and 1 "filter tile". I use this method to make a ...
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0answers
60 views

LibGDX Scene2D.UI without Scene2D?

I'm currently programming a little game in LibGDX for which I planned to use Scene2D's UI aspects to make menus and a hud. When fiddling around a bit, I noticed that my Scene2D.Stage basically made ...
2
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1answer
117 views

LibGDX: Do I have to dispose a texture if I load it from AssetManager?

AssetManager manager = new AssetManager(); manager.load("texture1", Texture.class); manager.load("texture2", Texture.class); manager.load("texture3", Texture.class); //And so on... And then I load ...
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77 views

Smoothly fitting texture tiles using alpha gradient on edges

I'm trying to draw a background texture with tiles that I'll rotate and mirror to create a maze. Here is a sample tile: As you can see, I use an alpha gradient on the borders. If I'd use a sharp ...
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3answers
145 views

Most optimal way to load 2D world

I am creating a 2D car racing game. (Yes, a Hill Climb Racing clone) What I am doing right now is load 10% of the map every time the user gets to 7%. For example: Imagine the map has 10km. (10000m) ...
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1answer
57 views

find Vector2 libgdx

I need to get coorinates of red point. Coordinates are just for example, it would be better to see the common formula. Found code like this, but it gains wrong result.() Vector2 o = new Vector2(6f,2f)...
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1answer
90 views

Should texture regions sizes be power of two?

Is it advisable for my individual texture regions inside this texture to be power of two, or that won't make any difference? I've read on several places that it's recommended to use power of two ...
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23 views

LibGDX BoundingBox + pickRay issue

I've been following this tutorial for trying to be able to detect if I have clicked on a 3D model, but am running into some issues. Here's what I have — public GameObject getObject (int screenX, int ...