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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Having a list of rooms with theirs connection to each other, how do I find isolated room groups?

I'm trying to create a small roguelike and went as far as random generating rooms and corridors. Each room is an instanced object and contain an arraylist of the others rooms connected by a corridor. ...
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5answers
754 views

Increasing the probability for similar tiles to generate next to each other

I'm working on a tile map system, which insofar looks like this (green is grass, air is white, stone is grey, and blue is water): It uses a simple random number generator so that there's a 45% ...
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4answers
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Is there a good reason I shouldn't use a java applet for a game?

I want to make a multiplayer browser-based game. The nice thing about using an applet is that I can make the client and the server in the same language (java/closure/scala/etc). I know there's html5 ...
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Mods for Minecraft Server - how does it work?

Minecraft server comes as a single jar. How are mods developed? How do they interact with the original jar? What is there under the hood? What technologies are involved there? I'm mostly a C++/Python ...
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2answers
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How To: Java Game to Steam Greenlight

I am planning to create an indie game using Java and Eclipse IDE and I want to put the finished product to Steam Greenlight. How does the whole process work after the game is finished and running ...
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3answers
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Fitting Android game to different screen sizes

I am making an Android game that is only in portrait screen orientation. It works great when I run it on my phone, but when I run it on a tablet, even though the screen size is bigger, all of the ...
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8answers
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Best resources to learn Game Development from a Java background? [closed]

I'm an enterprise Java programmer, however something I've been interested in and what got me into the whole programming thing was the idea of being able to create a game. Just wondering if anybody ...
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Is it possible to implement Steamworks functionality in a Java game? How?

I have a basic game that I want to eventually turn into something better. The game is all Java as of right now, but I want to implement the Steamworks SDK into my game (so it can have achievements, ...
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2answers
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How should i have the key/mouse input in an advanced java game?

I am a self taught programmer, so I do not know the proper ways to do things. I have made simple games like asteroids and snake, but in those games, you can easily modify the variables within the ...
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1answer
454 views

Estimating costs in a GOAP system

I'm currently developing a GOAP system in Java. An explanation of GOAP can be found at http://web.media.mit.edu/~jorkin/goap.html. Essentially, it's using A* to plot between Actions that mutate the ...
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1answer
345 views

Load ads in splash screen?

I have some ads that take a very long time to load. I was wondering it it is possible to have them load while the use was in the splash screen. I have looked at this answer: http://stackoverflow.com/...
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2answers
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Android real time multiplayer over LAN [closed]

I've developed several games for the android platform and now planning to create my first multiplayer game. What I have in mind is basically just a 2-player game witch you can play with 2 phones over ...
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5answers
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How can I mark levels as “complete” in a way that prevents cheating?

My first thoughts about marking levels complete is to just write the information to a file upon level completion and load that in once the app is opened up again. But how could I keep this safe from ...
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2answers
9k views

How do I render terrain in a 2.5D perspective, like in the game Don't Starve?

I have experience in making 2D side scroller games such as Terraria, but now I want to challenge myself and make a game that has a 2.5D perspective. The game I am trying to mimic is Don't Starve. ...
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3answers
3k views

Java game in a day or two [closed]

We are three people who are going to make a simple game in Java as a school project (University, first year). The game has to be object oriented. We don't have much time, 10-20 hours tops. None of us ...
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3answers
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Android threads trouble wrapping my head around design

I am having trouble wrapping my head around game design. On the android platform, I have an activity and set its content view with a custom surface view. The custom surface view acts as my panel and I ...
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2answers
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Breakout Collision: Detecting the side of collision

I am writing a breakout clone (my first game) and am totally stuck as to how I figure out which side of the brick was hit. I have a collision detection method that looks like this: DetectCollision(...
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6answers
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Which server platform to choose [closed]

I'm going to write a server for an online multiplayer with these requirements: Pretty simple turn based game (think a card game) that is played entirely on the server (security reasons) Must be able ...
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2answers
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How do I find the angle between two vectors?

I have 3 points on my screen: a = a point which is (c.x, 0) makes a line pointing straight up b = a user input touch, can be anywhere on the screen c = a moving object a _______.________ | ...
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2answers
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How to handle pixel-perfect collision detection with rotation?

Does anyone have any ideas how to go about achieving rotational pixel-perfect collision detection with Bitmaps in Android? Or in general for that matter? I have pixel arrays currently but I don't know ...
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3answers
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Should I move the world or move the player?

I'm about to start developing a sidescrolling game where the players goal is to travel as far as he can in the horizontal axis before touching down. Note that I do not need to ever travel back on the ...
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2answers
4k views

Java 2D game programming: Different approaches to make a game loop

I am new to Java game programming, but the more I read the more I'm confused, because I've seen several different approaches to make a game loop: 1. The standard approach, that uses the Timer class (...
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2answers
637 views

What is the primary use of Vertex Buffer Objects?

From what I've read, it seems VBOs are purely for performance. I'm working on a very rudimentary learning project in lwjgl and I'm just trying to figure out what more advanced features of the library ...
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3answers
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Android differences (Dalvik+Java vs Old School C++)

Developing in Android is going to be different for me, having spent the last 10 years coding games in C++. What's the main differences / pitfalls / bottlenecks to developing for the Android? My big ...
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1answer
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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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Looking for JMonkeyEngine tutorials and documentation [closed]

I'm looking for tutorials and documentation for JMonkeyEngine, beside the material on the official website. Any clue?
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1answer
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Box2D Difference Between WorldCenter and Position

So this problem has been brothering for a couple of days now. First off, what is the difference between say Body.getWorldCenter() and Body.getPosition(). I heard that WorldCenter might have to do ...
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Does Unity let you code in Java?

I am fairly new to Unity3D experience , but I have a very good knowledge of Java and Android development. I am really confused that if Java is at all needed for developing android applications? I read ...
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2answers
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How can a desktop Java game be distributed without a Java runtime dependency?

Is it possible to turn a Java application into a standalone package that runs "out of the box"? The end user should not be required to install any Java JRE, nor should the installer contain a JRE and ...
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2answers
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Space partitioning when everything is moving

Background Together with a friend I'm working on a 2D game that is set in space. To make it as immersive and interactive as possible we want there to be thousands of objects freely floating around, ...
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1answer
707 views

Appropriate level representation / data stucture for a 2D platfrom game?

I'm about to program a copy of Mario in Java. I'm thinking on 2 representations/data structures for the levels but I'm not sure which one should I choose: A 2D integer array. A quadtree to divide ...
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3answers
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Flash, Java, Unity plugin install penetration?

Is there data on how many users have Flash, Java, or Unity plugins installed?
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Is there any Card Game Framework? [closed]

Please let's avoid the discussion of creating/using a game framework or not. I would like to create a small framework for card games or use one if it exists. Does anyone knows one? Preferably ...
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2answers
968 views

What's the best way to draw lots of trees

I'm writing an app which renders a random island planted with trees. The trees are currently two quads, criss-crossed and drawn with textures. I plan to have more complex meshes that form different ...
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3answers
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PacMan character AI suggestions for optimal next direction

Firstly, this is AI for PacMan and not the ghosts. I am writing an Android live wallpaper which plays PacMan around your icons. While it supports user suggestions via screen touches, the majority of ...
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2answers
1k views

Random Zelda-style map generation

Im trying to randomly generate a map of rooms connected by doors, and I've succeeded in generating one using this code: public void generate(GameContainer gc) { rooms = new ArrayList<Room&...
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2answers
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What is involved with writing a lobby server?

So I'm writing a Chess matchmaking system based on a Lobby view with gaming rooms, general chat etc. So far I have a working prototype but I have big doubts regarding some things I did with the server....
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2answers
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Java code for client-server game on Android

I have developed a game on Android. Now I want to play it on wifi or 3G. I have game packets which I want to send form client (mobile) to server then to another client (mobile). I don't know how to ...
8
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1answer
686 views

Separation of world state and animation in a turn based game

How do you handle the separation of animation from the world state within a turn based game? I'm working on a 2D grid based game currently. The below code is simplified to better explain. When an ...
8
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1answer
544 views

Using a Higher Precision (than 8-bit unsigned integer) Buffered Image for Heightmaps in Java

I am generating a heightmap for every quad in my quadtree in openCL. The way I was creating the image is as follows: DataBufferInt dataBuffer = (DataBufferInt)img.getRaster()....
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4answers
514 views

Creating a Melee Weapon in Box2D (libGDX)

I am struggling with how to implement a melee weapon that can swing when a key is pressed. I am imagining two different attacks (stab and swing) I have tried creating two fixtures (character + ...
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3answers
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Does Steam notify the user that they need Java for a game when they buy/download/install it?

My mate and I are gonna make a game for Steam and I, as the programmer, want to use Java as that is my current favorite language. So I need to know, does Steam notify the user that they need Java for ...
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5answers
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How do I get pixel to hex coordinates on an array based hex map?

I'm trying to make a pixel to coord function for a hex map but I'm not getting the math correctly, everything I try seems to be a little off, and examples I found were based on circled centered maps. ...
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3answers
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How much is java used in 2d/3d indie games? (before/after Minecraft) [closed]

I wonder for my own use and curiosity, how popular is Java in indie game development , in 2d and 3d? Are there any good open/closed source games done in java?
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2answers
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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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5answers
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How to save and restore Bullet Physics state?

I'm looking for information on how to save the runtime state of rigid bodies with Bullet Physics. Most of my world consists of static objects, but I have a few dynamic and kinematic objects as well. I ...
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3answers
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Effective methods to continuously update movement in a tower defense game?

We are four guys making a Tower Defense game as a project in first grade on a university. The game is going to be really simple! Three different towers Three different monsters One map (maybe add ...
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3answers
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Rendering only what is on the screen

I am fairly new to this world, so bear with me. I have a grid of blocks in a top-down, 2d game written using Slick. The best way to think of it is the Pokemon world. Right now, I am rendering all ...
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1answer
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How to invert background pixel's color

I'm writing a game and map editor using Java and jMonkeyEngine. In the map editor, I've got a brush done by wireframed sphere. My problem is: I want to make it visible everywhere, so I want to invert ...
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2answers
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Java single Array best choice for accessing pixels for manipulation?

I am just watching this tutorial https://www.youtube.com/watch?v=HwUnMy_pR6A and the guy (who seems to be pretty competent) is using a single array to store and access the pixels of his to-be-rendered ...