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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2
votes
2answers
966 views

Tile based map and collision; getting stuck

I'm trying to make my character move around a tile map with collisions. Everything works fine except for one thing. I show you a picture with the problem: http://i.stack.imgur.com/ZWI7x.jpg That is, ...
5
votes
5answers
8k views

Moving from XNA to Android

I've been using XNA to learn game programming for some time, and I'm interested in moving to Android. Having said that; the learning curve to get started seems to have ramped up exponentially. I ...
-2
votes
1answer
475 views

vector collision on polygon in 3d space detection/testing?

In the 3d fps in java I'm working on, I need a bullet to be fired and to tell if it hit someone. All visual objects in the game are defined through OpenGL, so the object it can be colliding with can ...
0
votes
3answers
296 views

Collision Error

I am having trouble with collision detection part of the game. I am using touch events to fire the gun as you will see in the video. Note, the android icon is a temporary graphic for the bullets ...
4
votes
2answers
3k views

What Java library provides a high-level communication interface suitable for use in an action-game server?

I need to write a server for an action game, which needs fast communication with the client. There will only be one server, and I'll split the world in zones. The client will be written in Java using ...
2
votes
3answers
4k views

LWJGL glRotatef() without rotating axes?

Okay so, I noticed when you rotate around an axis, say you do this: glRotatef(90.0f, 1.0f, 0.0f, 0.0f); That will rotate things 90 degrees around the x-axis. However, it also sort of rotates the y ...
0
votes
2answers
292 views

Question on methods in Object Oriented Programming [closed]

I’m learning Java at the minute (first language), and as a project I’m looking at developing a simple puzzle game. My question relates to the methods within a class. I have my Block type class; it ...
0
votes
2answers
586 views

Bitmap & Object Collision Help

Is it possible to detect when an object and a bitmap collide. I have an arraylist of sprites that I am shooting with an image. I tried using this method here but as soon as the bitmap appears the ...
2
votes
2answers
2k views

No LWJGL in java.library.path

Okay, so I know I need to set the path to the native files. I can do this in Eclipse, by going to the VM arguments and using -Djava.library.path=, but when I export, it says that the VM arguments ...
8
votes
2answers
1k views

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 ...
1
vote
2answers
470 views

Level Creating Help

I am making a little 2d overhead RPG type game just for fun. I have almost all the basic stuff set up, but I just need a little help on level creation. I can already make a level and place each tile ...
2
votes
1answer
669 views

Java how to color text without using JNI?

I am working on a small text-based game in Java. I am trying to understand the concept of how to color the output without needing to use JNI. C++ has the ability to modify the console directly and ...
-6
votes
1answer
7k views

Can you make a 3d game in eclipse java? [closed]

Hello can you make a 3d game like minecraft using java?
5
votes
1answer
916 views

Java rendering performance bottlenecks

I've read a lot of forums about making 3D games in Java but I was unable to build a full picture of how it performs in video games. I know that it works smoothly for small and average size games, but ...
1
vote
1answer
900 views

Tetris style game in java (for now) will I need to use threads?

I'm looking at developing a puzzle game, it might be like tetris or something similar, perhaps more like bejewelled in that the player will select objects with the mouse to manipulate them. I've ...
0
votes
1answer
1k views

Creating Projectiles (Beam)

I am making a simple shooter game for Android where the player is a human and is being attacked by aliens. How would I make a laser beam, so that when the user touches the screen or presses the ...
4
votes
1answer
433 views

Network Game testing via Wireshark

How can i check/inspect the performance of my network game via Wireshark and specifically the Graphs available in Wireshark,i want to test the performance of my network game. which kind of graphs can ...
5
votes
4answers
1k views

Drawbacks of using reflection for a component based system at loading-time

I'm coding a little casual game in Java using Slick2D. This game use a lot of different "objects", managed in a composite way. So, firearms, furniture in the map, NPC and player character will be ...
4
votes
3answers
4k views

Why is my velocity decaying?

Programming in Java. Tinkering around with physics. My entities all have position and velocity. In the main loop, all I'm doing is applying gravity and bouncing off the edges, like so: // add ...
0
votes
1answer
2k views

Java/Android pixel perfect hit detection

I am making a game for android which I need hit detection between two objects. The first bitmap I have is a flying superhero, and the second bitmap is anything that he collides with. The superhero ...
4
votes
3answers
2k views

2D basic map system

i'm currently coding a 2D game in Java, and I would like to have some clues on how-to build this system : the screen is moving on a grander map, for instance, the screen represent 800*600 units on a ...
2
votes
3answers
1k views

Pub/Sub or message passing in multiplayer server backend?

For my masters thesis I'm going to develop a scalable multiplayer server for locationbased games. It's going to be a "service oriented architecture" e.g. one dedicated service for positions, one for ...
3
votes
3answers
526 views

Suitable Client Server setup for Network Game testing

I want to test my Client/Server game for which, currently, I am using localhost for both Client and Server. Obviously I'm not getting any fluctuation in data and measure idea of performance, and in ...
-1
votes
1answer
1k views

Tower Defense Game SurfaceView Structure

I am building a tower defense game for android where you have to defend the base from mobsters who have a bounty on your head. You start out with a certain amount of life, every time an enemy reaches ...
1
vote
2answers
160 views

Observing particular Port for measuring network game performance

How can I check/inspect the performance of some network application via observing the port it used, I want to test the performance of my network game. If my game is using port 1009, how can I check ...
1
vote
2answers
1k views

OpenGL web game: C++ with Java vs pure Java? [closed]

I'm going to write browser online game, not MMO, but something like a lot of Flash game. But with OpenGL rendering, because Flash is using CPU for rendering. What are advantages of pure Java or c++ ...
4
votes
2answers
5k views

Starting Java 2D Platformer using LWJGL [closed]

Getting started on a 2d platforming project in java. I've decided on using LWJGL and OpenGL, but I don't quite know where to start. What is typically the first thing one would work on with a ...
2
votes
2answers
2k views

Java 2D Game looks like 3D

i have fair experience with java game programming, i already made a simple mario game (side-Scrolling) i'm wondering how can i make a "Java" Game like that ...
2
votes
1answer
933 views

Converting 2D Physics to 3D

I'm new to game physics and I am trying to adapt a simple 2D ball simulation for a 3D simulation with the Java3D library. I have this problem: Two things: 1) I noted down the values generated by the ...
-3
votes
1answer
371 views

Populating Sprites

I am making a android game, it's a tower/base defense like type of game (yea I know it is kind of confusing), I was wondering if anyone knows a good way to have the attacking sprites randomly generate ...
6
votes
2answers
3k views

Tiled based map collision detection problem

I'm working on a tile-based Mario clone. I have implemented the tile based collision method from the tutorial http://www.tonypa.pri.ee/tbw/tut05.html. This works all fine when walking and falling. ...
3
votes
2answers
2k views

Need Ideas for Game [closed]

I've been through a year of programming and have the tools to create a cool, simple 3d game using Java. The biggest problem I have is ideas. When you have no idea how programming works, you want to ...
6
votes
2answers
7k views

How do you determine which object/surface the user's pointing at with lwjgl?

Title pretty much says it all. I'm working on a simple 'lets get used to lwjgl' project involving manipulation of a rubik's cube, and I can't figure out how to tell which side/square the user's ...
3
votes
1answer
373 views

More smaller maps among which player can travel

I am developing 2d game, where maps are tile based, small about 20x20 tiles and player can travel between a lot of maps (in my game rooms) like this. The maps are connected sometimes verticaly and ...
17
votes
3answers
6k views

Polling vs event driven input

I'm developing a game using polling for the input method. However, now that I'm delving deeper into the game menus and other UI components, I'm finding that I'd probably like to have event driven ...
3
votes
1answer
9k views

Java multiplayer cards game

I need to develop a simple multiplayer card game. For example, a poker game; this is only for study. I am going to develop it in Java. How I can I manage communication between the server and clients? ...
13
votes
4answers
13k views

How to load 3D models into Java?

Using LWJGL what is the easiest way to load a 3D model to be drawn on screen? I know LWJGL doesn't have built in loading support so I am looking for a small library that would help to load ...
2
votes
1answer
141 views

What causes my client's painting & input thread to stop? [closed]

I recently returned to face a problem I had with a game client of mine, i.e. the client's thread responsible for input & painting becomes unable to run after some while. I suspect that it has ...
1
vote
2answers
530 views

Problems with Creating Snake's Clone on Java

I'm creating Snake's clone. My app have too classes: Snake.java and Board.java. Right now I have three problems: 1) There are two constants - BOARDS_WIDTH, BOARDS_HEIGHT. They are meant to be ...
0
votes
1answer
2k views

Android sidecroller template

I want to create a sidescroller game for Android but it seems stupid to reinvent the wheel and since there are a lot of android sidescroller games already out I though that there must be some sort of ...
5
votes
1answer
1k views

What's the best way of drawing a glowing 3d line using LWJGL?

Sort of like a strip-light effect; not actually a light source, but just a polygon with glowing edges. Can this be done easily? Right now I'm contemplating drawing a line more than once with varying ...
1
vote
1answer
633 views

How to create a vertex array from any shape in JBox2D?

I have a code, that add a vertex array to a shape, my code is: PolygonDef shape = new PolygonDef(); for (int i=0; i<vertices.size(); i++) { Vec2 v = vertices.get(i); shape.addVertex(new ...
3
votes
1answer
905 views

Get shape of my bodies using Box2D

I would like to get the shapes of my bodies, but I can't get anything, only null. Why? Here is the relevant code section: Body b; while((b = box2d.physics.PhysicsWorld.world.getBodyList().getNext()) ...
6
votes
2answers
2k views

How to store 2D tile-map

I want to create a 2D map composed of small tiles, that should look like voxels (eg. this just from side). I think I can make a structure like Voxel2D, that have int X, Y and some Color, and every ...
0
votes
2answers
268 views

Rcon Api not working

I am developing a gaming control panel and that uses Rcon.jar to fetch data from gaming server. the code to use it written as below public static String rconExecute(String rcon, String command, int ...
2
votes
3answers
738 views

Game World structure in classes

I am developing 2D game in java, and I want some basic in-game scripting (spawn enemy, spawn item, change enemies properties). What I don't know is, how to divide the game world, to easily work with ...
1
vote
4answers
1k views

Client server design question

I'm working on creating a multiplayer game, with the client in ActionScript and the server written in Java. I'm using XMLSocket in the client to connect to the server. The server code looks something ...
4
votes
2answers
231 views

Developing an Asteroids successor: which languages/tools/frameworks?

Currently I'm planning to run the Asteroids successor on the Java Virtual Machine, while writing the code in Scala (because that's the language I'm fluent in). I have looked at different options, ...
2
votes
1answer
334 views

Filling in 3d Shapes

For a college project I need to draw an empty cube and then show the cube being filled. So far I have heard that JME and voxels is the way to go but I have no idea where to start. Can anyone point me ...
1
vote
2answers
714 views

Collision Problems

I'm having some troubles with a 2D platformer type game (there's more to it, but that's all that matters for this question). I had collision with the platforms working fine, but if the character hit ...