Java is both a popular object-oriented programming language and runtime environment which allows Java programs to run unchanged on most hardware and software platforms.

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Libgdx music is not working properly

I finished my game programming but I have small problem, please help me I want to finish it completely. I am starting background music when the user goes to the PlayScreen and when the kid in the game ...
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8 views

Rectangle Flash fix and draw string

Now i have a code wich is work :) But now i have 2 bug and i dont know how to fix it.I drawing a rectangle (thats work) but its flashing and i dont know why. The second bug is i did a score int and ...
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14 views

LibGDX - FPS drops

I've been trying to record some gameplay footage of the game I'm currently working on, using the Android SDK and ADB to do it. Whilst the game runs at constant 60 fps in my medium-end phone, as soon ...
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10 views

Libgdx Music is not working again

I am starting background music when the user goes to the PlayScreen and when the kid in the game dies, the background music stops and starts game over music and move to game over screen, then the user ...
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1answer
69 views

Java Distance between two Vector positions never 0

I have a Player moving, but when the player reaching the destination it should stop. But problem is that distance never return 0. It starts printing this: 0.9672514210000003 End by this and then ...
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1answer
39 views

What are the core concepts needed for a basic game? [on hold]

I'm planning on using JavaFX to develop my first game, and I just wanted to know what are the core concepts I need to understand first? From my research so far it seems to be animation and collision ...
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11 views

How do I resolve the inability to get an input stream from URL?

I am unsure if anyone has ever had problems with this, but I am having difficulty trying to get the URL to work properly however, this is what the logs says javax.imageio.IIOException: Can't get ...
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1answer
21 views

Receiving a “cannot find symbol” error [on hold]

In my Java class, we're creating a connect 4 game. For now, we're just setting up the GUI. I am receiving the error on lines 13 and 14 " private ArrayListplayer; private Connect4Ui ...
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11 views

Libgdx Scene2D Table background not whowing up

I am using Libgdx's Scene2D API to build by UI and everything has been working as expected until now. I created a Skin and a TextureAtlas and linked them as so: Skin skin = new Skin(); TextureAtlas ...
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13 views

Libgdx Ending level is not working properly

In my game the kid is collecting fruits but if he hits the rock 3 times or time is up before collecting the required points, the kid will jump to the half of the screen then fall down and start fail ...
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22 views

java - Instance culling using geometry shaders

I'm developing my own game and for that I want to implement frustum culling, to archive an performance optimization. I found a description on the internet (enter link description here) and this one ...
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63 views

Why aren't my pieces rotating on my chess board in Java?

I am developing chess game in Java using the Netbeans IDE. Instead of rotating the whole board at each move, I thought of changing position of the pieces themselves, while the board remains same. All ...
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2answers
44 views

Textures are not drawn separatley

I am trying to draw different textures of balloons and I want them to appear in different times about half second between each one, and move in the world. first balloons are rendered but after about ...
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1answer
25 views

Libgdx Image doesn't fit the Screen

I am Trying to show Image as background, but it doesn't fit to the screen. When I use this class as the start screen it fit the screen properly but when I call this class after winning the level, the ...
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0answers
15 views

Two Viewpagers - swipe from one to another cause stuck

I have two Viewpagers, one is controlling whole layouts (pages), and second holds some items. First one is named viewPager1 in this image: Works good, but not perfect; As you can see, there's ...
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2answers
53 views

LibGDX - Collision detection between all bullets and all enemies

I'm trying to make a collision detection system between the player's bullets and all the enemies on screen. So far I had something like this: for (Bullet bullet : hero.getPistols().getAllShotBullets(...
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33 views

I want to make a pie countdown timer in LibGDX

How would I go about making one of these in LibGDX? The number in the middle isn't necessary. And to make it clear, I'm not looking for an implementation or a "hand out" of source code. Just point ...
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2answers
38 views

Black lines on sprites

I am having the issue as seen below while using a textureAtlas with libgdx. I haven't found anyone else with the issue so I decided to ask here. Here is an image of the textures in the game screen: ...
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18 views

(LibGDX) Any Good Librarys or some thing for saving and reading data from a file [closed]

I'm going to add a add a library or a system that will save or read data from a file, but i couldn't find any that will work with my project. -I want it to save it in a human readable language example:...
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2answers
34 views

Libgdx Back button exit the app

when I press back button on android, it exits the game although I ask it to go to other screen instead. It goes to the other screen for one or two seconds then it exits.: if((Gdx.input.isKeyPressed(...
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49 views

Implement gpu based dynamic geometry lod with openGL

I'm currently working on my own game and for that I wanted to implement LOD, to boost the performance. I found a very nice tutorial on the internet: http://rastergrid.com/blog/2010/10/gpu-based-...
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1answer
37 views

How to “port” Java2D code to LWJGL

I've been following some game tutorials on youtube and developed a custom engine using Java (Graphics2D, BufferStrategy and such). I have a class "Surface", which represents any 2D object (image, ...
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24 views

Java - Issue colliding with more than one object

Ok, I am working on a simple 2D sidescroller game and having issues with the player (or any moving entity) colliding with another entity. My current method, (a box on north, south, east, and west to ...
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1answer
33 views

Libgdx if statement is not working well

I am trying to make the player die when it hits the rock or the time is up and the score is not reached, in this code at the first if statement it works when Rockhit is true, the player jump and ...
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29 views

Different Box2D bodies act differently and unexpectedly with same mass

I have a box2d body which is simply a rectangle (the spaceship). This ship flies around, affected by the gravity of planets (static circle bodies) just fine. I have tried changing the ship fixture ...
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1answer
49 views

Basic Animation Concept - Stuttering Sprites (Java)

The Problem I have some sprites animating across my screen (some spaceships). I alter their X coordinates (like -5, for animation) in my game loop. I want the animation to happen faster, however ...
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1answer
17 views

LWJGL version problems

Is it possible to create VAO's while my computer doesn't support openGL 3.0 or higher? I managed to create a vertex buffer object and draw a rectangle. But then I changed my lwjgl libraries to the ...
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1answer
138 views

Creating puzzle on libGDX

Good afternoon. Help me please to add the code for the game. This game is puzzle. Everything works good, but I would like to have not just ordinary puzzles with numbers, but also the puzzle with a ...
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1answer
26 views

LIBGDX font.draw() makes letters blink on PC

I load Bitmapfont then try to draw it, but on PC(desktop) build screen blinks with frequecy that I can judge that backbuffer is not drawn. On Android all is fine, I don't see blinking. I simply do ...
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1answer
20 views

How to change the way LibGDX scales images?

I'm using FillViewport and OrthographicCamera. LibGDX is scaling my images rather badly - jagged edges, visible pixels. How can I change the scaling method? by the way, I'm pretty sure the issue isn'...
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0answers
7 views

Should I boost run task via disabling TexturePacker?

I decided to create textures with keeping in mind that the largest screen resolution that my game will be working with is 1920x1080. So, menu background texture in my game will be always 1920x1080. ...
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2answers
39 views

Should I have one asset manager and unload and load with different gamestates? Or should I have one for each gamestate?

I am working on a LibGDX game and I would like to find out the best way to manage assets. Should I have one AssetManager that is passed through to my GameState init() method to load from each level, ...
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29 views

Java .dae file loader problem

I am making a COLLADA parser in Java, and I have made a loader that reads a .dae file, and saves it's content in a string. But, when I load a specific file, it doesn't get read correctly. Specifically ...
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107 views

How to correctly implement 'layered lighting' with Box2D-Lights

How does one only allow Box2D-Lights to affect one and only one OrthographicCamera. After researching, I found the following answer. This answer goes into detail about how to prevent one camera from ...
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5answers
8k views

How can I give the illusion of height to a ball in 2D?

In 2D top down soccer games, sometimes a ball is given the illusion of being in the air, like below: How can I achieve this?
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2answers
156 views

2D Platformer: add ability to jump on top of other character

I want to add ability to jump onto a head of other character/player, but still be able to go through them horizontally. There is one useful tutorial about one-way platforms, but that approach doesn't ...
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0answers
17 views

Transposition Table/Alpha-Beta Implementation

I got the following problem. I have implemented transposition tables, which seem to work well or at least I can not see they are not working. Additionally, I wanted to implement some move-ordering. ...
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1answer
39 views

Batching in Java (software rendering)

I've watched some tutorials on java game development and when they start using spritesheets all they do is get a subimage out of the spritesheet and create a new BufferedImage out of that. Does java ...
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1answer
26 views

Sprite update issue

I'm currently implementing Box2D with LIBGdx and i'm having issue on update, as you can see on this video : https://www.youtube.com/watch?v=D3Nph6yftTQ whenever my player move or the camera move the ...
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1answer
33 views

How to normalize angles from points in java

Previous thread on projectile slopes What is the velocity of a translating projectile in 2D? What I'm trying to do Get the slope at a constant speed for both X & Y Coordinates though I don't ...
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1answer
20 views

Java - Performance problem with BufferedImage and AlphaComposite

:) I'm currently making a 2D platformer game and now I want to implement Light using AlphaComposite. For creating the lights I first create a blank BufferedImage with ARGB format. After this, I ...
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2answers
73 views

What is the velocity of a translating projectile in 2D?

What I'm trying to do. So I want to have a projectile that starts at point (x1, y1) and head in the direction of my mouse say point (x2, y2). To clarify I'm pretty sure it's a vector but I don't ...
4
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0answers
41 views

2d platformer distance-based collision bug

I'm writing a 2d platformer collision algorithm, and I have everything almost working, except for one last remaining bug. I do collision by measuring the distance between the player's center and the ...
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1answer
87 views

How do you create a camera with target-focus behavior in Java?

After making some progress in my game, I was looking around for camera scrolling methods to use for my TDS game and found one that I thought would work well for it. This is an example of what sort of ...
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2answers
114 views

How should I implement card effects in a card game?

I've been trying to program a video game adaptation of the popular trading card game "Magic: The Gathering". If you've played MTG before, you'll know most cards have an effect, which is activated at a ...
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0answers
19 views

How To Mesh Models Together

I have been recently using my game engine created on LWJGL 3 to create a voxel game. Just a brief overview on how the voxels work, there are a list of block types that hold a model and bounding info, ...
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1answer
22 views

Average height of any point in a shape

Super quick intro. I am making a terrain generator (With a MC exporter mostly to debug). For the islands I am creating a map with points, and create a Voronoi diagram from it. Each intersection (Where ...
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2answers
62 views

2D Collision in tilemap - ArrayOutOfBounds

im trying to do collision detection with world based on tilemaps (two dimensional array) array - private int WIDTH = 10; private int HEIGHT = 6; String[][] simplemap = new String[][]{ { "0","1"...