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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3
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1answer
164 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
204 views

Libgdx Android app: Avoid fullscreen and show titlebar

I am developing an app using Libgdx and I don't want the app to go fullscreen and want to show the title bar but the app goes to fullscreen and hides title bar despite all efforts. Here is my style....
0
votes
1answer
450 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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vote
2answers
228 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 won'...
3
votes
1answer
104 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
3answers
317 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 ...
4
votes
2answers
2k views

LibGDX Game vs ApplicationAdapter

When I create a new LibGDX project the main class of Core project extends ApplicationAdapter. Here is how it looks like. package com.marimba.apptest; import com.badlogic.gdx.ApplicationAdapter; ...
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0answers
79 views

LibGDX with Parallax Camera, unable to accurately select objects

So, basically I borrowed the ParallaxCamera test that LibGDX provides and got the camera set up rather nicely. However, I noticed that when I specify a speed other than 1, my game objects shifted ...
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0answers
52 views

LibGdx scaling properly

I've mad use of view ports and they do what they say they do, but the problem is I'm not able to get it to scale the whole world with it. The game is for android which it looks nice on but desktop is ...
0
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0answers
61 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 ...
4
votes
1answer
274 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 ...
1
vote
2answers
55 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.
2
votes
0answers
188 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 ...
0
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0answers
32 views

TiledMap blocks makes Animation invisible

////////////////////////////////////////////////////////////////////////////////// Got it fixed. Thanks to anyone who tried to help me. New Code: mapManager.render(); spriteBatchForeground....
2
votes
1answer
129 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, ...
4
votes
1answer
791 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 ...
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0answers
56 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 ...
1
vote
0answers
75 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 ...
2
votes
5answers
304 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 two bodies collide, the collision is detected multiple times. Here's the code: public void preSolve(Contact contact, Manifold oldManifold) { Body a = contact....
2
votes
1answer
217 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 ...
2
votes
1answer
90 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 ...
5
votes
1answer
1k 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
0answers
126 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 ...
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vote
0answers
56 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 ...
4
votes
3answers
260 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 ...
0
votes
0answers
93 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); renderer.begin(ShapeType....
3
votes
2answers
201 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
1answer
341 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: com.badlogic.gdx.utils....
2
votes
2answers
63 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
2answers
187 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 ...
0
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2answers
355 views

Libgdx - How to rotate a single ShapeRenderer object

So, looked at a couple of questions similar to this, led me straight into dead ends. I have an object drawn out in ShapeRenderer, and I wish to rotate only that one object. I have tried shapeRenderer....
3
votes
1answer
144 views

Box2d Body to follow mouse movement

I am trying a box2d body to rotate following the mouse. Here's an image to clarify what I mean. The red and blue circles are current point of the mouse and the body (of corresponding color) moving/...
1
vote
1answer
181 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
268 views

LibGDX - Tilemap Wall Collision Detection Issues

I cribbed some code from another web tutorial (SuperKoalio - https://github.com/libgdx/libgdx/blob/master/tests/gdx-tests/src/com/badlogic/gdx/tests/superkoalio/SuperKoalio.java) about detecting a ...
0
votes
1answer
56 views

How to fetch unit coordinates for AI?

I have been designing a simple turn based Civ-like game over the last two days with libGDX to test myself. I have a units class that can be extended to make unit types and I have my game board set up....
0
votes
1answer
208 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
1answer
109 views

How to store each rendered frame as image in libgdx for debugging

I have a libgdx screen's render method where I am executing lots of for loops and drawing various shapes on screen in thoese loops. Also I am manupulating (x,y) of each shape at runtime to acheive a ...
0
votes
1answer
428 views

Camera.unproject(Vector3) method is not working in libGdx

I know the touch postioning in libGdx uses OpenGL, making 0,0 the bottom left corner while the camera uses the top left corner as 0,0. I did some searching and found this SO question that specifies ...
0
votes
1answer
327 views

LibGDX obstacle collision

How can I handle collisions with obstacles in LibGDX? Is there any automatic way to stop the character's movement when it collides with a wall or I have to constantly poll for all the possible ...
2
votes
2answers
820 views

LibGDX - Rendering things in different classes

thanks for your time! I'm really new to LibGDX (and Java itself). Which approach should I use to render my different game parts? I want to show a background, the main character, a bunch of enemies ...
1
vote
0answers
98 views

LibGDX's particle emitter - Multiple particles in the same effect?

Hello everyone reading this, I've used the particle editor to edit an effect to put in my game. Is it possible to have multiple and randomly emitted images (particles) instead of one? I don't want ...
0
votes
1answer
898 views

How do I manually make a .pack file like TexturePacker (without using TexturePacker)?

I am using libGDX and apparently the only way I see for creating a UI is with texture packs. I would say that since a texture pack is nothing more than JSON or XML file and a large png I could ...
3
votes
1answer
151 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 ...
-2
votes
1answer
69 views

Libgdx Statebased game not working

I'm using Libgdx and I wanted to change the default application to a Game with multiple screens. I get an odd nullpointer that has to do with the engine. I'll show you my little setup code. Here I ...
3
votes
1answer
339 views

Making a border around a translucent shape in LibGdx

The recommended method for making a border around a shape using LibGdx is to draw a larger version of the shape to serve as the border, then draw the shape over the larger image. shapeRenderer....
2
votes
1answer
110 views

Screen not rendering after restarting game

Game works fine on the initial launch on Android, but after that restarting game does not render the graphics on the screen properly. It is a copy of the question Sprites not being rendered on ...
0
votes
1answer
83 views

Libgdx Platform collision problem

I am trying to come up with a collision function where all the cases are made. If the player (Who's hit box is a circle) collides with a platform (hit box is a rectangle) from the right the ...
2
votes
1answer
121 views

Box2D No Gravity when moving against wall

I use Box2D in my current project and I have a problem with the gravity.. You can see my problem here: https://www.youtube.com/watch?v=2_kv9LkKwN4&feature=youtu.be when i jump normal everything ...
2
votes
0answers
182 views

LibGDX Android Textures reload other textures, and transparent images get black backgrounds [Pictures]

I have very strange problems with my LibGDX Game in Android - The problem is that sometimes the textures get black backgrounds when they should be transparent, and sometimes when I remove the texture, ...
8
votes
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 + ...