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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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. ...
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1answer
41 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 ...
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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); ...
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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 ...
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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! ...
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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), ...
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1answer
17 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: ...
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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? ...
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1answer
37 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() ...
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2answers
62 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 ...
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1answer
43 views

Actor not taking touch libGDX

I am trying to handle the touch of one of the Actors in the stage. The following is the code I have written: public class MyGame extends ApplicationAdapter { private GameStage gameStage; //Game ...
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2answers
294 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
63 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) ...
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1answer
288 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
38 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 ...
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2answers
1k 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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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
779 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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1answer
210 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
43 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 ...
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2answers
69 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 ...
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2answers
215 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
70 views

LibGDX particle emitter rotation

I have a libGDX game, in which I'd like to make some ice breath like effect using particles. So far we made a cone like effect. I can obtain and render it on the screen with this. ...
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2answers
157 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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2answers
270 views

Why does adding LIBGDX “fadeIn” action to a table in a group make the whole stage fade in?

I'm trying to "fadeIn" a store "screen" which is really just an invisible group. I set the group to visible=true, set the alpha to 0 and then do a "fadeIn" on the group. The problem is that the whole ...
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1answer
61 views

Libgdx using Box2d with TiledMap to create collision detection

I'm fairly new to Libgdx and have some good basic knowledge on Java. Right now I am stuck on how to add collision to my TiledMap, I am using the Mapeditor to create the tilemap. I read so many ...
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1answer
27 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 ...
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1answer
364 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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1answer
35 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 ...
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1answer
1k 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
132 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
122 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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1answer
61 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 ...
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1answer
1k views

How to mirror a texture in libGDX

Is it possible to rotate my sprite in LibGDX? public class Flame { private static final int FRAME_COLS = 6; private static final int FRAME_ROWS = 1; private Animation flameAnimation; ...
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0answers
7 views

Libgdx : how to attach actor to a rotated group

I have a group actor with a circle image .png and then I spread small circles around surface of this group, I mean circle on angle 0 and circle on angle 60 and so on using the math equation: ...
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2answers
114 views

LibGDX: Easy way to draw partial sprites

I am surely overlooking something, but is there an easy to draw for example only half a sprite in LibGDX? I originally thought I could do this with setBounds() but this distorts the sprite.
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0answers
27 views

Kryonet with multiple clients overhead server, how to deal with this? [closed]

I'm developing a server-client multiplayer game using Kryonet and libGDX. My server contains 100 entities and sends updates at 20 packets per second to clients using udp. Each packet contains the 100 ...
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1answer
312 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
835 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
213 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
19 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 ...
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0answers
18 views

Set the camera to follow a TextureRegion

I need to set the camera to follow an object like the player, I've seen some tutorials where two lines of code can solve this, like: camera.position.set(xPos, yPos, zPos); camera.update(); For my ...
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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 ...
0
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1answer
60 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 ...
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2answers
61 views

LIBGdx - Kryonet with an InetSocketAdresse

I'm trying to implement Kryonet in my game and i'm facing some trouble. Using the source from the code i develop my server like that : try { this.server = new Server(); ...
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1answer
43 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 ...
0
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2answers
187 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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1answer
145 views

LibGDX - Accelerometer Problems

I got some issues. I'm using LibGDX. When I hit an object, my Fighter is supposed to fall to the Ground. BUT, because of the Accelerometer, i can still move it up and down eventhough it died. The ...
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1answer
174 views

Mouse coordinate conversion Libgdx

I have a camera: //Map is a my object that wrapper of TiledMap class In the create method: this.renderer=new OrthogonalTiledMapRenderer(this.map.getMap(); this.camera=new OrthographicCamera(); ...
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1answer
114 views

How can I split my entity manager class into a gameworld class and gamerenderer class?

I currently have a libGDX game where I have an entity manager class which is called in the gamescreen. Instead, I would like to utilise it in a gameworld class and a gamerenderer class, but I cannot ...