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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Issues displaying images behind an inactive scrollpane [on hold]

SOLVED using scroller.setFadeScrollBars(false); scroller is a ScrollPane object. The background texture is only displayed when the scrollpane is scrolling, then it fades out to black. The text that ...
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1answer
21 views

Why is my aspect ratio calculation now working on Android platforms?

I have this method: public final float aspectRatioHeight(float originalW, float originalH) { float newHeight = (originalH / originalW) * (Gdx.graphics.getWidth()-20); return newHeight; } To ...
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0answers
12 views

LibGDX, Screens , Animation [on hold]

I want to know is there a way to make beautiful animation between two screens , for example 1st screen will start fading animation and under that second screen well be displayed ?
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2answers
71 views

box2d rendering performance degrading extremely even with sleeping bodies?

I'm working on my first smartphone game, a simple 2D platformer built with libgdx. Game maps use the Tiled level format, so a map is just a bunch of blocks. I recently started using box2d to implement ...
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1answer
32 views

Is it possible to create sqlite database only for android in LIBGDX game? [on hold]

I want to know if I can just implement sqlite database for android in libgdx game? Also if this is not possible then may I know the simple way to integrate libgdx game to just store scores in sqlite ...
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1answer
17 views

Making dialog “clips” in libGDX or in general?

I'm new to libGDX (I just released my first game), and I've started thinking about things I'd like to do next time. One thing I really want to do is, have those story type movies, where you tap the ...
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0answers
110 views

Box2D shape/fixture position vs. body position

I load my rectangular shapes from a simple Tiled level into libGDX and want to create a physics world out of it via Box2D and attach sprite assets for rendering. I get the tiled object layer and ...
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15 views

NullPointer calling scrollpane draw from a libgdx application [on hold]

Solved: Using Stage to display rather than calling the ScrollPane draw method. I get this error when opening the GameScreen and calling the render method. Exception in thread "LWJGL Application" ...
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2answers
98 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
27 views

how to remove game objects after on overlap in LIBGDX game

I have gold stars in my game that give score to game hero if the hero overlap with the star. What I want is to remove star once it overlap with hero object. I give score by checking overlap with this ...
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0answers
11 views

How to loop through tiles in libGDX [duplicate]

I just need a for loop to show me all of the tiles in a tiled map. for(Tiles t: thetilemap) { }
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3answers
70 views

Using Delta for a stopwatch, delta too fast than real time seconds

I search for methods to create a stopwatch on libgdx and came across with this: public void trigger(float delta){ playTime += delta; playTimeRounded = ((double)Math.round(playTime * 100) / ...
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0answers
20 views

How to loop through all of the tiles in LibGDX [on hold]

I need to loop through all the tiles and use my personal collision class. How do I loop through them?
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1answer
20 views

Drawing shapes and images in libgdx dialog

I am currently working on a dialog window for my android game using libgdx. This dialog window contains a collection of labels and buttons, but should also contain an image. The image represents the ...
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0answers
19 views

Event handling for Pressing only 4 keys on desktop

I want to poll only 4 keys i.e. Keys.LEFT, Keys.RIGHT, Keys.Up and Keys.Down in libGDX strictly. That means, I want to call render method, only when above 4 keys are pressed. I followed below link ...
2
votes
1answer
313 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
38 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
17 views

Libgdx--how to store every single point drawn using touchdragged?

Basically i am trying to detect line collision. The problem is when intersection occurs quickly(touch dragged is done quickly like fling), the collision is not detected. It seems as if 'touch dragged' ...
3
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1answer
671 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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1answer
56 views

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

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 ...
2
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0answers
18 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 ...
2
votes
1answer
50 views

How do I detect a line collison in LIBGDX?

I am drawing a continuous line using Pixmap. I want to check for a collision / intersection of my line with the already drawn line.
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2answers
40 views

How can I attach a libGDX actor to a box2D body?

I'm creating game like hill climb racing. I created my car with the help of shapes and joints but I don't know how to attach graphics to it. I used actors and sprites before for the sake of learning, ...
2
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1answer
59 views

Why do my Box2D collisions fail when I have multiple fixtures on one body?

I'm creating my first libgdx / Box2D game where a player moves around using a mouseJoint. My player has two fixtures, "main" and "question". For some reason when I have these two fixtures, my player ...
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0answers
24 views

rotate to movement direction [duplicate]

If I have a player character that can move 8-directionally, I can set the rotation of the player to face the direction of movement. But if I want to smoothly rotate to a direction, sometimes the ...
0
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1answer
324 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
150 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 ...
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1answer
40 views

Texture Packer - Any way to make it combine intelligently

I am making a Pokemon Clone, using libgdx. I have the different types of sprites: e.g. Back, front, back shiny, and front shiny. The current way the Texture Packer combines the textures seems to be ...
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vote
1answer
38 views

How can my entities avoid walking on certain tiles?

In my tile map, created with 'Tiled', I placed some tiles that need to be avoided by my mobiles. Tiles like water or obstacles. The entities "wander" in the map, choosing random directions, and their ...
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0answers
22 views

LibGDX/Java - IllegalArgumentException causes my game to crash whenever my main character touches a Coin [closed]

Trying to figure out why my Android game crashes whenever the player touches an animated coin. I have attached an image of the LogCat and my code is below (NOTE: all game objects in ![Renderer] are in ...
1
vote
1answer
181 views

Libgdx 2D Game, Random generated World of random size, how to get mouse coordinates? [closed]

I'm a noob and English is not my mothertongue, so please bear with me! I'm generating a map for a Sidescroller out of a 2D-array. That is, the array holds different values and I create blocks based ...
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vote
2answers
817 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
66 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 ...
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0answers
37 views

LibGDX - Is it worth making a World class for my game? [closed]

Right now I pretty much have a World class across 3 classes (Player, Game, Renderer) if that makes sense? Game is where game objects are initialised, and Renderer just draws the objects onto the ...
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0answers
36 views

Libgdx implement 2d drop shadow for transparent sprites

I am a libgdx learner. For an learning application that I am developing using libgdx on android, I need to show drop shadow or glow effect when a sprite is touched. The sprites are created from a ...
1
vote
2answers
908 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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0answers
40 views

How to eliminate the outline in libgdx?

I'm recently started working on a game in libgdx, and I've run into the problem that my sprites tend to get a thin, whitish outline around them. This is especially a problem for me since I'm working ...
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1answer
39 views

How do I split a button graphic into a 9 patch?

I understand what a nine patch is but I don't understand how to create one with code. I've made an image with a 1-pixel black border, but how do I turn that into a nine patch? How do I make a nine ...
2
votes
1answer
134 views

Does Libgdx being “for Desktop” mean dependency-free native executables?

I want to clarify whether the Java Framework "LibGDX" can be used to compile games to native executables. The description/tagline says "Desktop/Android/HTML5/iOS Java game development framework". I ...
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0answers
16 views

How do I get the impulse of a collision from Box2D in LibGDX?

I am developing a game using LibGDX and Box2D. I want to get the force or the impulse when two bodies collide, but I can't find the right way to do that. How can I use a ContactListener to get the ...
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2answers
89 views

Optimizing Collision Detection in a 2D Game

I am optimizing my "little" Java (LibGDX) shooter game, and perhaps unsurprisingly, collision detection is a "bottleneck"; I've kind of reached my performance goals already, but I want to tweak the ...
0
votes
2answers
1k 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
44 views

Dealing with multiple 2d sprite animations for the same object

I am using libGDX for a 2d game. Some of my in-game objects have animations, for example a soldier in top-down view that has a walking animation. That is working fine. Now, while walking, this ...
0
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1answer
61 views

Make camera move constantly upwards in box2d world

Im using libGdx to develop a 2d game, which has the following: The world moves in an upward direction by having a camera follow the player's y position. The user only controls player's x movement, ...
1
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0answers
28 views

Lag when drawing single Texture multiple times in libGDX [closed]

I am building a game where you are basically drawing little dots on the screen with the help of the accelerometer. I am using a single instance of an Actor where I store the coordinates that needs to ...
0
votes
1answer
108 views

Label not properly centered in TextButton

I'm using LibGDX v1.1.0 and I see that the label of a TextButton is not properly centered. I have the following code: m_resumeButton = new TextButton("resume", skin); m_resumeButton.addListener(new ...
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0answers
26 views

How to draw multiple large background images using libgdx?

I have developed a basic lunar lander-style game using Slick2D and dyn4j and am now redeveloping it using libgx for various reasons. I am having problems drawing the background (i.e. everything, but ...
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votes
1answer
51 views

Throwing a bomb LibGDX Box2D [closed]

I am trying to create game where somenone throw a bomb. I am wondering how I can have an bomb react in a way that is represented by the following picture : Is there are any tools in Box2D that can ...
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0answers
17 views

AssetManager and Pixmaps

I've been reading about AssetManager here: https://github.com/libgdx/libgdx/wiki/Managing-your-assets. Apparently assets are reference counted (with load and unload). I am wondering about Pixmaps. ...
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0answers
103 views

How can I modify my procedural shadows to also show some of the walls?

I'm rendering shadows in Libgdx with the method from this tutorial. I think it's a nice and easy method. I render all my shadows in a framebuffer, then invert it. Before invert: After Invert: ...