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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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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3answers
215 views

Creating a separate renderer for entities in a 2D game

I'm making a 2D shooter game. As of now, every entity "draws itself", meaning every renderable entity has a draw function. I know it is better if rendering is handled separately, but how can I achieve ...
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9answers
9k views

C# (Mono)/Java 3D Game Engine recommendation [closed]

Can you recommend a good C# game engine for cross platform (Win/Mac/Linux, I don't care about consoles) development? I've got some experience with raw OpenGL and I played around with Java bindings ...
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1answer
88 views

Using Java on mobile, should I avoid object construction to reduce GC overhead?

I new to both Java and game development and working on my first LibGDX game targeting mobile systems. How problematic is the garbage collector in a mobile environment? Should I try to reuse as many ...
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1answer
49 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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1answer
43 views

How can I rotate a quad around it's center?

My code is: GL11.glPushMatrix(); // rotate around center GL11.glTranslatef(-200/2, -200/2, 0); GL11.glRotatef(30, 0.0f, 0.0f, 1); GL11.glTranslatef(200/2, 200/2, 0); // draw quad ...
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2answers
251 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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1answer
81 views

How can I blend up to 3 textures on a polygon without blend maps?

For my voxel game I need to blend up to 3 textures in the same polygon. It would be preferable if I could specify a texture id for each vertex, but other solutions are accepted as well. Here's an ...
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1answer
435 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
74 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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2answers
124 views

How to create a Update function in Java

I have recently started using Java, but have been programming in javascript, and actionscript 3 for a while. I am used to the language giving me the ability to simply do something like: private ...
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0answers
44 views

how to move an object to the mouse in Java

I have just recently started using Java, literally 2 days ago, and I have run into an issue. While I have been easily able to figure out most of the syntax and methods, because I have used multiple ...
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0answers
69 views

How to draw my android Hexagons in a grid?

I am trying to create a hexagon grid using the Android ’Canvas’ package. I have a working ’Hexagon’ class that when used in a view will draw a single hexagon on screen. The problem is that I need many ...
4
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2answers
775 views

Is it possible to compile an android game for pc desktop?

If I have an android game based on java native libraries. Is it to possible to compile into a windows/linux executable without a 3rd party emulator?
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0answers
67 views

KryoNet/Multiplayer Basic Design Questions

I am building a simple turn-based multiplayer Android game that resembles chess a bit. I'm using KryoNet for the multiplayer. The only thing I got working so far is the login server and game ...
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0answers
47 views

Vertex Skinning OpenGex Incorrect Transformations

I'm following the formula here, I'm using LJWGL, OpenGl, OpenGex, and Blender: I implemented the code and it works but there is a few things. First, there is a gap between the two bones, or on each ...
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1answer
54 views

Java: Exported JAR file doesn't load images

I am using Netbeans to create my game. The images do seem to load when I run it in Netbeans. However, the built jar file only leaves me with a blank screen. This is how I call the images in my game. ...
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2answers
98 views

Multithreaded or Thread pooled server for real time multiplayer games? [closed]

So if the Thread pool handles 10 players out of 100 per second, this could make a delay that will be no good for real-time games, so as I see it that MultiThreaded will be better, thus it will handle ...
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votes
1answer
56 views

What is the best way to send/receive data about user coordinates and other properties?

For example If I have 2 users, and each of them have an object, and that object has: x coordinates, y coordinates, angle, state, and other properties... I use java let'say the game changes at 30 ...
2
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2answers
167 views

Unknown length of primitive array

For my Voxel like game I need to generate terrain meshes from an array of ids. Because of that I have no idea how big the final vertex array will be. Currently I'm doing like this: generate mesh and ...
2
votes
1answer
59 views

Java: Problems with Tile Collisions

I have created a tiled map using a BufferedImage (img) from a PNG. From that, I would like to detect the player's (peter) collisions with individual tiles on the map. However, my code will not run and ...
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votes
2answers
90 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
50 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 ...
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1answer
53 views

Sending an object from one point to another

I am working on a simple game in Java and am stuck for now with getting an object to be directed from its current position to a certain point, all at a fixed speed. My problem is that whenever I ...
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3answers
1k views

Game Programming in java [closed]

I'm new to this site as well as new in game development, so I need to get a great start for it. Can anybody tell me from where I should start and some books or link are appreciable. What are the ...
1
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1answer
177 views

Sprite transparency not effected libGDX

I am making a game using libGDX and Tween Universal Engine. My problem is as follows: I have 2 screens so fars, a splash screen with the logo, and a second one which is the main menu. In the splash ...
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4answers
533 views

What is the easiest way to make an object follow the edge of a sprite?

I have a rounded rectangle sprite and another sprite that's just a circle. I want the center of the circle to follow the edge of the rounded rectangle. Is there any easy way to accomplish this task? ...
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0answers
70 views

Android client-server logic for a multi-player game

I'm creating an android "quiz" app. The game can be played by two user in real-time. I'm creating game on server with this design: //node js server //new game request api @game/request/new var ...
3
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0answers
109 views

LibGDX's HTML project doesn't show anything in Browser

The question is self explanatory, when I run my demo-html project as a Web Application and I open Chrome with the provided link by eclipse, my browser doesn't show the image it is supposed to show in ...
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1answer
47 views

Resultant Vector Of Circle Line Collision

For my game I need to have a circle collide against a wall and bounce off in the appropriate direction. I've looked around for a while and haven't found a good solution to my problem. I have a diagram ...
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0answers
36 views

How can I render several rectangles efficiently? (LWJGL)

I'm working with OpenGL3+ rendering and I am coming from OpenGL1.5. In GL1.5 I had rendered things like this: public class GraphicsDead { int vboVertexHandle; int vboColorHandle; public ...
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1answer
70 views

Handling collision with LWJGL rectangles

I'm testing collision with other rectangles so I can implement it into my current project. The problem is the rectangle starts at the right x and y, but I'm not sure where exactly they are. I'm pretty ...
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2answers
386 views

OpenGL generate hills looking vertices

I want to generate a terrain which looks like hills. Some sort of sine waves. Should be as simple as possible. But I can not figure out how. I get very scary results, which are nothing worth. I need ...
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0answers
66 views

Problems with starting a new game in Tic-tac-toe

I have problems with a new-game method in the game Tic-tac-toe, because after I play a game against the computer, and want to replay the game, the buttons freeze and I can't press them. For playing ...
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0answers
14 views

Problems with computermove in tctactoe android java

I have problems with the computerMove in tictactoe. I am trying to do a method with matrix, but I do not know how to do it in a good way. I have done an array with button which the game board will be, ...
1
vote
1answer
89 views

Server networking - Thread per player

As my game is purely multiplayer, online performance is important. Should I run two threads for each player/connection? (One for input and one for output) or should I run one thread for all player ...
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0answers
48 views

Game state: getting it to work help! [closed]

I've started using enum in java but I ran into issues getting it to work, how would i be able to make it start of with a Intro going into a main menu (with mainmenu backround and buttons) and you can ...
1
vote
2answers
236 views

What makes Minecraft so CPU intensive, and what could be done to improve it? [closed]

Recently I've been searching for VPSes that allow Minecraft servers to be hosted, and surprisingly very few do. Most allow for games - but Minecraft in specific is disallowed by many. Now it's fairly ...
1
vote
1answer
54 views

Drawing text with Slick

I've been trying to draw a text to the display using Slick. However, when ever I draw the TrueTypeFont to the screen, it draws it reversed upside down and also, it makes the whole display turn black. ...
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0answers
88 views

Libgdx: ModelInstance texture is not rendered on Java8

I have project based on opengl, libgdx framework. It's impossible I think, but when I switch my project from Jdk1.7 on Jdk1.8 I have problem with rendering model's texture. I have no idea how language ...
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0answers
35 views

How to Move Image Based on Rotation Java Slick2D?

I am trying to rotate image based on rotation. I am unable to do so. Here is my code Vector2f direction = new Vector2f((float)Math.cos(Math.abs(imgIcon.getRotation()) - anglecorrection), ...
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vote
2answers
2k views

How do I make a pop-up window with Scene2D?

I have a main-menu screen with a logo and a bunch of buttons. When the Login-button is pressed, I pop up a dialogue asking for a username and password. This works fine, other than the "popping up". ...
0
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0answers
321 views

Libgdx Music error QCMediaPlayer mediaplayer NOT present

Problem solved with music = Gdx.audio.newMusic(Gdx.files.internal("song.mp3")); I am looking for music implementation in my app with LibGDX. I saw the guide provided in LibGDX documentation but it ...
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0answers
36 views

Detect which direction an object collides with another

so I am trying to implement a collision detection system. I'm only using rectangles, so it's not too complicated. My collision detection currently does detect if the 'player' object intersects the ...
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vote
2answers
198 views

Load a simple text file through asset manager in libgdx

It's easy to load a simple text file from the internal: Gdx.files.internal("data/colors.txt"); But I currently use an AssetManager to load assets that are defined in an array of ...
0
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0answers
107 views

Sprites not being rendered on screen change - Android Libgdx

In my game over screen for my Libgdx Android game I've the following code which starts a new game upon a screen touch. if(Gdx.input.isTouched()) { ScreenManager.setScreen(new ...
3
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1answer
110 views

Endless Running Game - Changing Lane Function in JAVA

I am developing a kind of vertical endless running game, where the character has 4 possible lanes to be in. I am using libGDX and want the character to change lanes by adding a horizontal velocity to ...
4
votes
1answer
825 views

BitmapFont - where is getBounds method in new 1.6 libGDX

I download newest libgdx version 1.6 and i cant solve problem with center my BitmapFont text. Earlier in version 1.54 i used getBounds() method to find out width of text. Share your solutions, thanks ...
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vote
1answer
73 views

Life Counter in Greenfoot caught “Incompatible Types” exception

I need to make a life counter so that when my Actor get hit by an Enemy, his life will be decreased by 1. I put this method in my Actor class: private void decreaseLife() { Actor enemy = ...
1
vote
1answer
85 views

Java - Load new classes from a folder automatically at startup

I want to make my game-coding very flexible; so I wanted to make the game automatically load new Mobs from a folder named "mobs". This must be only at startup; not while it's already running. I just ...