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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(Java) Trying to animate an arraylist of coins with a (working) animation class

I have a coin class which takes in an integer numOfCoinsand an enum LayoutType, which can be linear or curved. A linear layout displays the coins in a straight line one after the other - we'll work ...
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1answer
141 views

How do I reverse this function?

I'm working on an isometric tile rendering engine and I need to reverse a function I used to translate the Cartesian coordinates into isometric coordinates. I've already written a function for this, ...
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2answers
81 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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39 views

player sprite hidden after using a stage (scene2d library)

What i'am doing is showing a tiledmap on the full screen , and it works fine. The character moves perfectly and the camera too. What i want is : Showing some text or imageButton over the map like ...
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24 views

Using Box2D in LibGDX, is there a reason a fixture set to be a sensor would only -sometimes- detect a collision?

I am working on a 2D game in LibGDX. Currently, I am testing interactions between a player's weapon and enemies - in particular, a sword and an enemy monster. The player has a hurtbox and the sword ...
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1answer
38 views

libGDX fix timestep [on hold]

I'm using libGDX for one year. I was making a game based on rhythm, but I dropped because my game has different movement speed and motion in Desktop/Android version. So I started a new project and a I ...
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2answers
124 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 ...
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2answers
65 views

How do I show damage to an enemy? [on hold]

I have a Player and an Enemy, both with damage values and health. I am trying to add something that will show how much damage is done to the Enemy with each attack. I want it to show above the Enemy, ...
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1k views

How can I create a button with an image in libGDX?

I am new to LibGDX. I am trying to develop a game for Android (so it will support different screen sizes), but I don't know how to put a button with an image. I tried ImageButton but I can't resize ...
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2answers
205 views

LibGDX how to change animations

I have a Player Class and i have 3 different Animations for it. I can render them perfectly but i don't know how to change from one animation to another. For exmaple i have 3 animations, one for ...
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1answer
150 views

Lighting shadow casting sprites with box2Dlights

I currently have something like this using box2Dlights Ideally, I would like objects casting shadows to be lit, so the object is lit but there is still a shadow cast around it. Right now the object ...
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1answer
194 views

2d libgdx: runtime level generation

I have encountered a problem during my first game development: I thought of a Array<Ground> groundArray that does groundArray.add when a new ground will appear on the screen, and removes oldest ...
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2answers
883 views

libgdx actors and instant actions

I'm having trouble with actors and actions. I have a list of actors, they all have either no action, or 1 sequence action This sequence action has either : a couple of actions (some are instant, ...
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3answers
134 views

Using a basic shader in libGDX

Looking at https://github.com/libgdx/libgdx/wiki/Shaders, I have decided to try these shaders: String vertexShader = "attribute vec4 a_position;\n"+ "uniform mat4 ...
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1answer
1k 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
684 views

libGDX using Stage and Actor produces different camera angles on desktop and Android Phone

libGDX using Stage and Actor produces different camera angles on desktop and Android Phone. Here are pictures demonstrating the problem: http://brandonyuh.minus.com/mFpdTSgN17VUq On the desktop ...
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14 views

Is their something built-in libgdx android for showcase guide? [on hold]

I'm looking to build showcase guide for my android game. (Something like this) Is there something built-in in libgdx to do so?
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9 views

In android libgdx is it possible to add scrollpane to ContentTable? [on hold]

How can I add scrollpane to a ContentTable (in Dialog) in android using libgdx?
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1answer
108 views

Multiplying by delta not giving smooth movement

I started working on my first proper game but reached a problem straight away. In short I have a game that runs most of the time at 60 fps. ( I am using Libgdx a popular Java framework) but my game ...
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1answer
25 views

LibGDX font issues

I've started creating a small project for the store with LibGDX. So far I only tested on PC, and everything went well. I'm using the gdx-smart-font library for font rendering. The fonts are looking ...
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0answers
16 views

Use prebuilt chunks for dinamical generated level [on hold]

I am looking for a way to create a dynamic vertical scrolling level using chunks of level which i build to be sure the level is playable. I am wondering how to create this levels and which is the best ...
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1answer
25 views

LibGdx Table not firing touch events

I can easily add listeners to the actors within a table, and they will fire events, but if I want an entire to table to have 1 listener and do not care to have differentiated effects depending on ...
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1answer
22 views

LibGdx: How to check if VSync is enabled

I am just about finished my options screen, the only thing I need is some way of detecting if Vsync is enabled or not. I'm using LibGdx 1.5. I have tried to find an access to wglSwapIntervals, but ...
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1answer
46 views

Animation fails due to a NullPointerException which I'm certain shouldn't be thrown (LibGDX / Java)

What the title says basically. I've been stuck on this error for a few hours I got it to work earlier but I honestly can't see why its failing now (ctrl + z'd back to the working stage). Here's my ...
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2answers
157 views

get View from LibGDX for Android

I am making a LibGDX app, and I need to get the view to put to an Android app. Here is the code to get the view: package jangkoo.game.shadowfiend.android; import ...
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1answer
53 views

How can I test if the mouse draw on the active tiles?

I want to draw some sprites in a tiledmap where the tiles are active. I want to draw with the mouse, so how could I compare the position of the mouse, the sprite position and the position of active ...
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35 views

Dijkstra Pathfinding in Libgdx, some minor problems

I'm having some problems with my Dijkstra implementation in Libgdx. I understand that there are already AI libraries that can probably do this much simplier but this is a school assignment so i'm ...
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1answer
193 views

LibGDX Bounding Rectangles

I'm creating some rectangles surrounding my sprites for my player and bullet class to detect collisions with the overlaps method in Intersector class of LibGDX. I have a question: When I instantiate ...
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2answers
42 views

Is using Game in libGDX for more than just switching screens a bad practice

I'm the process of refactoring the prototype of my game to use multiple screens using the Game - Screens model. I found some information (I think in more than one place) that the Game class should be ...
3
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1answer
987 views

Libgdx - IsometricTiledMapRenderer and light shading

I am wondering if there is any way to simulate light shading in Libgdx using an IsometricTiledMapRenderer. Here is my code to draw an isometric map, it's able to be moved around with the mouse and ...
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2answers
90 views

Why do my Box2D bodies occasionally get stuck and separate forcibly?

I'm making a space game with LibGDX and Box2D. I made a video here to illustrate the issue. Verbal description: When objects collide, they sometimes get stuck together and are then suddenly separated ...
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1answer
116 views

Why does my libgdx app just display the badlogic.jpg instead of my start screen? [on hold]

I have been looking at example libgdx games. It looks like https://github.com/libgdx/libgdx-demo-cuboc is the closest thing to a game I would like to make. I am able to download, compile and execute ...
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1answer
31 views

OrthographicCamera and viewport not giving expected effect

I recently asked a question about this area that I think was too broad, so I will try a new approach. I have the following code I am experimenting with: batch = new SpriteBatch(); ...
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1answer
44 views

LibGDX - Executing 2 different touchDown events in the same method

On the bottom left of my screen is a circle with an Arrow and on the bottom right is a circle with a gun. If the player is in jetpack mode and the Arrow "button" is clicked he flies like flappy bird ...
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13 views

How to resize animation in libgdx?

I want to draw an animation, the size of each frame is 500x500px but when I try to resize, the animation seems to rotate... Here the code to load frames and create animation: Texture fireSheet = ...
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0answers
12 views

Scaling buttons in LibGDX

I'm trying to make a usable GUI for a Android game using LibGDX. But I'm having big trouble getting the fonts and buttons to a usable size. Scaling fonts work, but the results are not very pretty. ...
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1answer
588 views

Libgdx actor bounds are wrong

The Actor's boundaries are not centered at the ButtonText but I used the setBounds() method. The higher the Y position is, the less centered is the boundary. The weird thing is that i only created ...
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1answer
29 views

LibGDX problems when switching screens and disposing: AL lib: (EE) alc_cleanup: 1 device not closed [on hold]

I have to classes which implements the Screen interface. I'm trying to switch between these screens. I'm able to switch one time, but when trying to switch back, I receive the error: AL lib: (EE) ...
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1answer
252 views

Design pattern for animation sequence in LibGDX

What design pattern to use for sequence of animation that involve different actor in libGDX. For example I am making a game to choose a wolf from a group of sheeps. The first animation played when the ...
0
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1answer
72 views

LibGDX multiple enemies animations

Hello everyone i have a question about animating multiple enemies on the screen at the same time. Basically, i figured out how to use the Pool for creating enemies and dispose them after use etc.. ...
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0answers
25 views

Can't perform normal jump after applying revolute joint

I have encountered the following problem: I have two PolygonShapes which I had connected with a RevoluteJoint. The first body is called square the second is called weapon, before connecting the two ...
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0answers
20 views

LWJGL: getDisplayModes() on Linux with two monitors

When calling getDisplayModes() on a Linux machine with two monitors I only get one single resolution, that is, the current resolution set on the main monitor. However, calling xrandr directly gives me ...
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2answers
231 views

Since Table.drawDebug is deprecated in libGDX, what should I use instead?

I am following the "Learning LibGDX Game Development" book to make a simple game. I am in the menu creation section where we create a stage and render it with debug borders. The book says to use ...
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1answer
112 views

SelectBox in LibGDX doesn't display and freezes the program after a click

I am currently trying to apply an overlay with LibGDX over my 3D ModelBatch. Everything works fine except for the SelectBox. Once instanciated, it shows up on my screen I can click on it once but then ...
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2answers
2k 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 ...
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0answers
42 views

Problem with collision detection , Libgdx [on hold]

I have a main character called main_sprite and I need to check for collision with another object called enemySprite . In case there is a collision, it should set velocity to 0. Here are my classes : ...
0
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1answer
23 views

Animation reset in libgdx

i have an issue that i hope it's easy to resolve. I'm playing various animations in my libgdx-created game. For a particular animation, i need that to play in loop mode but only if a particular ...
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1answer
63 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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0answers
15 views

Libgdx. Sprite won't stop moving;

I can't stop a sprite from moving. Here's my code: boolean moving; Gdx.input.setInputProcessor(new Input(){ public boolean touchDown(int screenX, int screenY, int pointer, int ...
0
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2answers
73 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 ...