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.

learn more… | top users | synonyms

0
votes
0answers
5 views

Does the LibGDX AI extension work on IOS?

Does the LibGDX AI extension work for IOS? Here it does't show how to add it to the IOS dependencies. I don't have an IOS device but I want to release my game for IOS. I just don't to finish my game ...
2
votes
0answers
12 views

GLSL 2D Silhouette

I'm trying to render a silhouette of any entity behind foreground objects to indicate their position to the player. Here's an example of what I want to achieve, from Hyper Light Drifter: From what ...
0
votes
0answers
27 views

LibGDX - Show a minimap

I've started to develop a small roguelike game in LibGDX. I've also made a minimap class, which creates and updates the minimap as the player explores the dungeon, by using a Pixmap. The minimap class ...
6
votes
3answers
2k views

Detect if a sprite has left the camera in libgdx?

Is there a method to know if a sprite has left the camera of the stage? or I have to do my operations? :P
0
votes
1answer
56 views

LibGdx Scalling sprites on Android

I have a sprite that is a few buttons but need them in the center of the screen for all android devices. I tried setting it's location to the center of the screen by dividing the orthogonal camera by ...
0
votes
1answer
10 views

In Scene2D, does Actor.hasActions() no longer exist?

Eclipse does not allow me to do while (actor.hasActions()){} saying it's undefined for type actor, but the libgdx API still has it as one of an Actor object functions.
0
votes
1answer
393 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 ...
0
votes
1answer
47 views

LibGDX make an object rotate around something

I need to rotate and object, which should be a circle made up with a ShaderRender, around a specified point. In LibGDX there is a method or something which allow me to do this? If it doesn't exist how ...
0
votes
1answer
70 views

Libgdx understanding screen size

I'm trying to create my own jumper type game where the player moves up through an infinite y value. The problem I am having is getting the screen size to match up with the android screen. viewport ...
1
vote
2answers
45 views

How to make sure that when two bodies collide, there is only one collision detection on box2d?

I'm using LibGDX with box2d, and when to bodies collide collision is detected multiple times. here's the code `public void preSolve(Contact contact, Manifold oldManifold) { Body a = ...
2
votes
0answers
24 views

generate box2d bodies from isometric tiled map

I followed the tutorial here to generate box2d bodies from a tiled map and that worked fine.... for orthogonal tiled maps. Unfortunately isometric maps use their own coordinate system where (0, 0) is ...
4
votes
1answer
152 views

LibGDX input y-axis flipped

I'm writing a game in Java for Android using LibGDX, and I connected my phone so I can test it on it. I know that LibGDX's render system works different than regular Java systems since the 0,0 ...
0
votes
0answers
19 views

TiledMap blocks makes Animation invisible

////////////////////////////////////////////////////////////////////////////////// Got it fixed. Thanks to anyone who tried to help me. New Code: mapManager.render(); ...
1
vote
0answers
27 views

LibGDX - ShapeRenderer as principal game entity renderer

I am trying to make a 2D game that is just a bunch of default figures like circles, arcs and quadrilaterals with no textures (similar to Super Hexagon), and for that I was using C# and XNA long time ...
2
votes
1answer
27 views

How can I repeat a Texture Region in libGDX

I have a texture that is part of a sprite sheet. I want draw the texture to cover a certain length, but I want it to repeat not stretch. However,when I use the following code batch.draw(hillBottom, ...
0
votes
2answers
201 views

Draw a line/curve for the path an object has taken

Hello I am making a game in libgdx. I want to draw a line/curve of the path a object have taken. First a thought I could save all positions of the objects each iteration and draw line between them ...
-1
votes
0answers
30 views

Level Backgrounds [duplicate]

I'm developing a game using libGDX but am still new, especially when it comes to designing sprites etc. So far for my sprites I've used only GIMP. However, for my game I also need different level ...
0
votes
0answers
15 views

Filling the viewport area of a orthographic camera with an image (libgdx)

So im trying to get the whole area of the viewport and then use the coordinates to draw images in the camera's viewport. So if the camera moves I can fill it with one image the length and the width of ...
2
votes
1answer
38 views

How to achieve sprite reflection effect in libgdx

I am currently working on an open world game similar to Pokemon using libgdx. I am currently stuck on this effect that I really want to be done before moving to other features of my game. How can I ...
1
vote
1answer
138 views

How do I make my main character move towards an object? LibGDX/Java

What I want to happen is for my player to bounce from spring to another. For example take the illustration below: Here's my code (what I've tried to do so far). This gets called in an ...
1
vote
0answers
30 views

Efficient Collision detection for polygons (fleet) in an RTS

I'm trying to make an RTS for android using libgdx. I would like to have collision detection to be able to detect ships inside the range of weapons and collision between my bullets and the ships. So ...
4
votes
1answer
65 views

How do I convert screen coordinates to isometric tile map coordinates in libGDX using matrices

I know this has been asked many times but my question doesn't quite fit the others. I have an IsometricTiledMap and I need to get the tile under a set of screen X and Y coordinates. Here is a picture ...
2
votes
1answer
30 views

2D LibGDX Collision Avoidance [duplicate]

I would like to know what is the best way to implement collision avoidance and eventually pathfinding in a LibGDX 2D top view game. Think of "Binding of Isaac". I use a sort of tilemap to place the ...
0
votes
2answers
277 views

Basic 2d platform collision detection algorithm has a slight bug (Java)

I'm trying to implement collision detection between Player (the main character) and a Platform. They are both modelled as rectangles; when player hits the side of a platform he should bounce off it ...
1
vote
2answers
814 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 ...
1
vote
1answer
449 views

LibGDX - Box2D: Realistic Light and Layers

I'm having some problems with my current game. Short description: It's a 2D game where you have to avoid the lights or you lose HP. My problem is the following one: Here is the rendering process: ...
0
votes
2answers
100 views

Game lags when my player collides with a specific object (solution known, unsure how to implement)

I'm developing a game in Android using LibGDX (although this is more of a JAVA problem than an engine problem). My aim is to have my player bounce off one spring onto another that will eventually take ...
0
votes
2answers
377 views

LibGDX , Scale button with animation when it is pressed

I am developing game using LibGDX . I want to create beautiful menu and to scale buttons when they are pressed but not in this way , when it is pressed scale it 1.5f , I want to scale it with ...
0
votes
2answers
301 views

Card game - creating card Listener

I am making a card game where there are 21 cards on hand and 2 options from where user can draw cards to his hand and throw a card from hand. I am new on game development and I'm following the ...
0
votes
1answer
24 views

Move a box2d body towards mouse [on hold]

I'm using LibGdx's Box2D in Java. I'm trying to apply a force to the body that would send it towards the mouse. The problem is, I'm having trouble figuring out a way to send it directly to the mouse ...
2
votes
1answer
318 views

Word game - board implementation?

I'm working on a boggle type game for android, using libgdx. The user is presented with a 4x4 grid of letters and must find words by dragging their finger over the letters. Unlike boggle I want used ...
2
votes
1answer
473 views

How to save file in assets so it can be properly loaded in Android Studio?

I am following a guide on creating a replica of Flappy Bird. - http://www.kilobolt.com/day-6-adding-graphics---welcome-to-the-necropolis.html The step I am having trouble is loading the texture from ...
1
vote
1answer
51 views

Using world coordinates instead of pixels

I've been told that having a set pixels-per-world unit number is bad practice because it will not look the same at different resolutions. Because of this, I am trying to learn about using abstract ...
1
vote
1answer
338 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 ...
-1
votes
0answers
23 views

LibGDX : Scene2D [on hold]

I wanna make the right scrolling button smaller and the buttons inside it to touch the right edge of the Table inside the ScrollPane, the buttons are smaller the left grey part is the background of ...
0
votes
1answer
41 views

How can I update a Stage-based HUD from another Stage's Actor in libGDX?

I feel like this is a simple problem, but I'm having issues finding the correct search terms. I have a Screen that includes two Stages. The first, stage, contains a number of objects deriving from ...
0
votes
0answers
14 views

Scaling/Zooming a SpriteBatch

I am working on my first game with LibGDX and coming from ActionScript3 I am used with the possibility of scaling things more or less the way I want. I know it works different in LibGDX, but I can't ...
0
votes
1answer
86 views

Scene2d Stage Actor setup issues

I am creating a game using libgdx. In the same each level has a class. I have stage as a member variable of the class. To this stage, I add actors. Inside the levels class, I have attaced the input ...
2
votes
1answer
171 views

libgdx arrays onTouch() method and delays for objects

I am trying to create random bullets but it is not working for some reason. also how can I make a delay so the bullets come every 30 seconds or 1 minute? Also the onTouch method does not work and it ...
1
vote
2answers
138 views

Is using camera and viewport in Libgdx always necessary?

I understand that camera and viewport are important to keep virtual measurement units and handle different aspect ratios and resolutions when building games with worlds bigger than the screen (e.g. ...
3
votes
1answer
39 views

How do I use Libgdx viewport for UI?

I am using LibGDX to make a game for Android and I am using 2 Viewports. One for UI and one for the actual game content. My problem is I can't find a good way to scale my UI using a Viewport. This ...
0
votes
0answers
34 views

Is the libgdx g3d model format really most efficient? [closed]

The libgdx wiki says that libgdx's g3d files are more memory and runtime efficient than others. Is this really true? I can see no major reasons why libgdx g3d models any better than the common obj ...
0
votes
0answers
16 views

Libgdx polygon ratating

I'm using polygons for collision detection. Here is the code: poly = new Polygon(verticies); poly.setOrigin(100,100); poly.setRotation(45); renderer.setColor(Color.GREEN); ...
0
votes
2answers
137 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 ...
0
votes
1answer
24 views

LibGDX - how to detect touchUp with GestureListener?

I'm making a game and I have implemented GestureListener as my inputprocessor. It came with a bunch of methods such as fling, pan, tap etc etc including touchDown. However, there is no touchUp method! ...
1
vote
1answer
102 views

LibGDX Box2D Lights - Illuminate background

I have a box2D world made of tiles. I use a custom DirectionalLight for light up the scene from above (It shines through transparent blocks [eg.: the water] more deeply). The problem is (as expected), ...
0
votes
1answer
16 views

How can I use OpenType Font in libGDX

Is there a way I can use an OTF file with libGDX. The following throws an exception: gameFont = new BitmapFont(Gdx.files.internal("data/font.otf")); Caused by: ...
0
votes
0answers
12 views

LibGDX : Scene2D ScrollPane

I want to create a list of buttons with ScrollPane , but I cant create a ScrollPane . In the constructor method in the examples Skins are used (.atlas , .json files) but how to create these files? ...
0
votes
1answer
36 views

Libgdx Scene2d and Box2d light

Currently I am using scene2d and I want to implement shadows using Box2d light. I want shadows under characters but when I draw something after render() , it draws nothing. For example, in draw() ...
0
votes
2answers
61 views

How to use world coordinates

I am quite new to game development (but not programming) so please forgive me if I am not correctly understanding certain concepts. I am trying to figure out how to use world coordinates rather than ...