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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how to design transparent screen in libgdx

this question is for LibGdx geeks. I want to make transparent screen in my game. For example, when level completes I want a new transparent screen pop up and show player's high score, buttons to ...
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2answers
370 views

Libgdx detect when player is outside of screen

Im trying to learn libGDX (coming from XNA/MonoDevelop), and I'm making a super simple test game to get to know it better. I was wondering how to detect if the player sprite is outside of the screen ...
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0answers
65 views

box2dlights conelight rotation is off

I'm using libgdx/box2dlights for my game~ I have a conelight set up as such: ConeLight cl = new ConeLight(rh, 32, new Color(0f, 0.0f, 0.0f, 1.0f), 3, 0, 0, 0, 1); where "rh" is a RayHandler set to ...
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1answer
551 views

LibGDX: Smooth movement on a grid based game

I'm making a game with LibGDX where the player is on a grid (like a Chess board). For now, I'm moving the player by teleporting him 16px in a direction. I'd like to use the delta time to make smooth ...
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1answer
53 views

revolutejoint doesn't seem to rotate

I have a revolute joint set up as such in libgdx + box2d: RevoluteJointDef rjd = new RevoluteJointDef(); rjd.initialize(body1, body2, arm.getWorldCenter()); rjd.motorSpeed ...
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1answer
599 views

LibGdx efficient data saving/loading?

Currently, my LibGDX game consists of a 512 x 512 map of Tiles and entities such as players and monsters. I am wondering how to efficiently save and load the data of my levels. At the moment I am ...
2
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1answer
217 views

Setting uniform value of a vertex shader for different sprites in a SpriteBatch

I'm using libGDX and currently have a simple shader that does a passthrough, except for randomly shifting the vertex positions. This shift is a vec2 uniform that I set within my code's render() loop. ...
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1answer
207 views

html5 libgdx project: war to be deployed in a servlet container or only part of the contents to a web server

I am new to compiling games with libgdx to be played on the web and I have some doubts perhaps someone can point me in the right direction: Using the new gradle setup I wrote a simple game to learn ...
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1answer
206 views

Create 2D sprites with libGdx using a shape and a texture separately

I am creating a 2D game with LibGdx that will have creatures that are generated from dozens of characteristics with potentially millions of unique combinations. For each segment of each creature, I ...
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1answer
200 views

Cover Screen with Snowing Effect in Libgdx

Oddly enough I cant find clear instructions on this theme (I only found rain and the method is very particular) so I ask, how do I implement a whole-screen snow-falling effect? The methods i can ...
2
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1answer
451 views

Android LibGDX game: Choosing starting activity

I am making a Android game with LibGDX (using ADT eclipse bundle). How do I choose the default activity to launch when the user opens the app. I set the project up with the LibGDX setup GUI, and I ...
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1answer
78 views

TiledMap resizing and aspect ratio with LibGDX

I'm making a game and I don't know how to resize my TiledMap when the window is bigger but keeping its squared shape. Here is a screen: When I change window size, here's what happens: I want ...
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1answer
73 views

Multiple clicks required before listener is called

I have a screen with multiple stages (pre-game, game, pause) and on the game stage I have a pause button. This is implemented as: public class PauseButton extends Actor { private NumberzGame ...
0
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1answer
195 views

libGDX SpriteBatch reuse

Using libGDX, sprites or simply texture regions must be inserted into the batch for drawing: void render() { batch.begin(); batch.draw(...); batch.end(); } Is the VBO being uploaded ...
0
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1answer
58 views

Resizing the window moves and stretches the texture

I have a basic screen with 3 TextureRegions rendered on the screen rendered with this code(Ignore the hardcoded numbers, bad decision I know will be replaced later): Gdx.gl.glClearColor(0, 0, 0, 0); ...
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1answer
160 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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votes
2answers
164 views

LibGDX - draw bullet physics bounding box

I am very new to game development and I am trying to debug my 3d collision bounds. Could somebody give me an example on how to draw the collision bounds of an object in libGDX? I assume it has ...
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2answers
351 views

Smooth camera movement between followed objects

I have 2d game where my camera follows the player. Simplified, it copies the player position as its own. Now I have some other object in the game, that I want to camera to follow. This is easy enough ...
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0answers
56 views

Box2D and randomly generated tilemaps

I am making a 2D Terraria-style sidescrolling game. I want to use box2d for the physics. However, I am using tilemaps for the maps, and I do not know of a processor-efficient way to use Box2D bodies ...
2
votes
2answers
135 views

how do I create a moving type of block like in Mario[box2d]

I want to create a block which only moves up and only when hit from below. I am trying out a distance joint and I read it can be used as a spring, is this the correct solution? the way I have tried ...
1
vote
1answer
154 views

Gradle desktop build not finding assets

Whenever I run my game using the DesktopLauncher I am able to find my files, but if I build an executable using Gradle I get an error that the files are not within the specified folder. This may be ...
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vote
1answer
584 views

LibGdx sprite rotation vs Box2D physics rotation problem

LibGdx sprite rotation vs Box2D physics rotation problem Tearing my hair out on this one. I am an experienced software developer, but very new to LibGdx and Box2D development. I am writing a game ...
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1answer
387 views

LibGDX keep camera within bounds of TiledMap

I have a simple TiledMap which I can render fine. I have a player hopping (with Box2D) around and my camera follows the player around: cam.position.set( player.position().x * Game.PPM + ...
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2answers
137 views

libgdx: How do you remove a cell from TiledMap?

I am making a Terraria-style sidescrolling game with an open world. I am using a TiledMap to render all of the tiles. If I want to remove a tile, like if it is broken, how would I stop it from being ...
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1answer
58 views

Game slow with older phone [closed]

I've made a game using libgdx. On m'y HTC One X, the game works good, even if there are some lags but only at the beginning. I wanted to try it on an older phone (well a less powerfull phone), a ...
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2answers
440 views

Libgdx: movement of scrolling background is not smooth even at 60fps

I'm developing a game and I want to make a sliding background. The background is not scrolling smoothly. I logged the fps, but it was ok. This is my code, I don't know what I'm doing wrong, any ideas? ...
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1answer
361 views

How to start an animation just once on an event in libGDX

I am trying to show an explosion animation which i created using a few textureregions and created Animation missileblastAnimation from those textureregion like this -- > TextureRegion[] explosion = ...
4
votes
1answer
611 views

How can I create a fade effect between scenes in Libgdx?

I have implemented a screen fade with Scene2D. It currently fades fades out of one screen to black, then then from that black into the next screen. It would be really awesome if I could fade ...
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0answers
44 views

libGDX Tilemap spritesheet size requirements?

I'm having an odd problem with libGDX. I have two spritesheets: http://postimg.org/image/iqj2w03sn/ and http://postimg.org/image/ofzbgb9yv/ [These sheets are from the Pokemon essentials builder ...
2
votes
2answers
221 views

How do I make a puzzle piece move smoothly between locations?

I'm building a 2048 clone to sharpen my Libgdx skills, but I don't know how to ease a tiles between board locations. When I slide my finger, the tile moves rather swiftly. How I can make the movement ...
7
votes
2answers
768 views

How can I make a snake's tail follow the head?

Following an assignment and just getting started with libGDX by building a small Snake clone I've run into an issue that I'll probably be ashamed for in a little while. I currently have a snake's ...
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2answers
107 views

How to implement “move to touch location” function?

What is the formula/logic to implement moving an object towards a TOUCHED location. I want character A to move to my finger and it must be accurate. Here is what I have tried so far: @Override ...
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vote
2answers
293 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
792 views

Libgdx collision detection and response

I am trying to create a simple platformer game with libgdx. I implemented a collision detection for the player's bounding box with the map's tiles using the Rectangle.overlaps method. In response I ...
2
votes
1answer
112 views

Using Box2d to model rotating turret

I would like to model a rotating "turret" on top of a tank-like object in 2D from the side view like pictured here: Notice the faint outline of a gun protruding to the upper left courtesy of ...
0
votes
1answer
172 views

Parse and iterate over SVG path

I need to parse a SVG path expression like m8,295c-4,-292 441,-291 446,-26c5,265 440,263 442,-9 and have a way of iterating over it in [0 ... 1]. I looked into Apache Batik but it doesn't seem to ...
2
votes
1answer
131 views

RGBA values not coming as intended | LibGDX

As it states, my RGBA values aren't coming out the way I want it to be. My RBGBA values are As it states, I am trying to create a orange tinted color on my game. 221, 189, 98, 0.7 I am using a ...
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2answers
149 views

Conditionally use java or android classes

I'm using bezier curves in my libgdx project. I was testing the desktop version using java.awt.geom with GeneralPath but when I went to test on android, it raised an error saying that I can't import ...
0
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2answers
477 views

How do you create fnt (angelcode format) files from existing bitmaps?

I often gets the same problem: Someones creates a nice bitmap font for me in form of a sheet nicely formated into a png, like this: ...and i need to create the angelcode .fnt atlas for using it ...
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1answer
102 views

Libgdx Box2d createfixture crashes vm intermittently

I have a hard to debug problem. I have a Box2D game which creates a wheeled vehicle. I want the vehicle body to reflect when it goes from moving left to moving right. to do this i set a flag in a ...
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0answers
332 views

Libgdx and ParticleEffect with scene2d not showing the same way as in the Particle Editor

I am developing a new game with libgdx and trying to implement ParticleEffect in scene2d (using actor). I am creating a ParticleEffect with Particle Editor in which I would like to add to a stage. ...
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votes
1answer
77 views

my movement is working good on keyboard but on android its not

So basically here is what my movement is like for keys: key down if (keycode == Keys.LEFT) { mishi.getAcceleration().x = -13; } key up if (keycode == Keys.LEFT) { ...
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0answers
82 views

Using libgdx to display different textures above and below generated terrain

I'm working on a Scorched Earth clone using libgdx. So far I've been able to dynamically generate the terrain as seen in the screenshot below: The polygons below the terrain surface are currently ...
1
vote
1answer
170 views

Most efficient way of brighten and darken sprites with OpenGL > 2.0

So I have been shading (brighten/darken +adding color) my sprites by using glTexEnvf with GL_MODULATE and GL_ADD and a vertex color. I only had to rebind the batch every time I needed to change from ...
2
votes
1answer
545 views

How to correctly set window size in Libgdx scene2d.ui dialog

In my libGDX application I am using the scene2d.ui classes to render my game's GUI. One of the things I render via these classes is a dialog window with a background image set. I have created the ...
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1answer
127 views

Why is my text is too large even when scaled to .05f in libGDX?

I'm trying to scale down my fonts as my game objects are also small. I'd like to scale them down the same way as my sprites. However, if I scale them below .05, the font disappears! My attempt at ...
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1answer
266 views

Two issues with testing LibGDX on Android

1) When I test my game on desktop it is 100% fine. When I test it on my Nexus 7 physical device, it is the same except the backgrounds have no color. For example my splash screen has a greenish ...
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0answers
177 views

Collision in Tiled Map - LibGDX

I have collision code that deals with left or right or top or bottom. I am using Tiled Map with LibGDX. Question is: How do I detect collision with other cells by all 4 sides, and not specifically ...
5
votes
3answers
696 views

Creating Platform game with Inclined Levels

Till now I have developed platform games in which a player can only move and detect tiles linearly. I wonder on how to implement games in which a player can move on an inclined or irregular surface. ...
1
vote
1answer
389 views

How do I combine images into a single entity in libgdx?

I've googled this but can't seem to find anything on "concatenating" two images, especially with libgdx. Any ideas?