Java is both a popular programming language and runtime environment which allows Java programs to run unchanged on most hardware and software platforms.
8
votes
1answer
181 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 ...
8
votes
2answers
553 views
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 ...
8
votes
1answer
330 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
votes
2answers
953 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 ...
7
votes
3answers
3k views
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?
7
votes
3answers
893 views
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 ...
7
votes
2answers
2k 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. ...
7
votes
3answers
710 views
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 ...
7
votes
3answers
1k views
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 ...
7
votes
1answer
261 views
When and why is a Pool class needed to hold objects?
I've been studying opengl es and an example I saw was using a "Pool" class to keep track of touch and keyboard events.
Could someone please explain how and why a pool class is needed. From what I was ...
7
votes
1answer
5k views
Making a HUD/GUI with OpenGL (LWJGL)
I'm at the stage in my game development where I need to make a HUD or GUI. I've never gotten to this part, so I don't know how its done. I tried rendering a simple quad at a fixed position on the ...
7
votes
2answers
1k views
Multi threaded game - updating, rendering, and how to split them
From the StackOverflow post (it was recommended I move this):
So, I'm working on a game engine, and I've made pretty good progress. However, my engine is single-threaded, and the advantages of ...
7
votes
2answers
516 views
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 ...
7
votes
2answers
309 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 ...
7
votes
2answers
241 views
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, ...
7
votes
2answers
746 views
Are there any game engines in C# or Java that are cross-platform and support multitouch input?
I'm looking for game engines (particularly 2D) that can run/create games for Windows, Mac, and Linux, and support multitouch inputs and gestures. I'm able to find many that meet the first two ...
7
votes
2answers
403 views
Handling commands or events that wait for an action to be completed afterwards
Say you have two events: Action1 and Action2. When you receive Action1, you want to store some arbitrary data to be used the next time Action2 rolls around. Optimally, Action1 is normally a command ...
6
votes
4answers
613 views
Java collections and managing simultaneous operations / concurrency (java.util.ConcurrentModificationException)
Ok, so i have created my first "game" and it uses a lot of java's collections. for example, i have a bunch of monsters in a HashSet which sometimes gives me the fabled ...
6
votes
3answers
2k views
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 ...
6
votes
6answers
1k views
Best resources to learn Game Development from a Java background?
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 ...
6
votes
3answers
315 views
Common ways to keep up with character state in a 2D game?
I am currently developing a 2D Blockdude clone for learning purposes and am wondering about storing character state in the game. For example, the character can be facing either right or left. What are ...
6
votes
2answers
2k 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. ...
6
votes
3answers
1k views
Flash, Java, Unity plugin install penetration?
Is there data on how many users have Flash, Java, or Unity plugins installed?
6
votes
4answers
2k views
Looking for JMonkeyEngine tutorials and documentation
I'm looking for tutorials and documentation for JMonkeyEngine, beside the material on the official website. Any clue?
6
votes
4answers
700 views
Efficient 2d Java Line of Sight for a lot of entities?
My problem today is this:
I have many civilians going around, they are classes stored by an arraylist.
The idea is when they see another civilian panic, they'll start to panic and it will spread.
...
6
votes
4answers
645 views
Profiling server side game loop in java
I am looking for tips to profile the server side game loop of a Java program for CPU usage. I tried to use the TPTP plugin for Eclipse so far.
The problem I am having is that it is really slow. For ...
6
votes
2answers
674 views
How to loop over a part of an ogg vorbis stream?
I'm successfully streaming ogg vorbis data to openAL with the Java library JOrbis, but now I want to loop over a part of this stream, e.g from 30" to 1'30".
I thought that at the end of the loop, I ...
6
votes
1answer
158 views
How to force a line break before the last word of a line reach the edge?
I'm printing a sliding text by adding each letter after a short period of time. My problem is that when the text multilines, the last word of a line starts on the current line and jumps to the next ...
6
votes
1answer
359 views
Finding which tiles are intersected by a line, without looping through all of them or skipping any
I've been staring at this problem for a few days now. I rigged up this graphic to help me visualise the issue:
http://i.stack.imgur.com/HxyP9.png
(from the graph, we know that the line intersects ...
6
votes
4answers
350 views
Implementing AI to hide behind obstacles
I am developing an AI simulation of predator and prey. I would like to simulate the AI hiding behind obstacles, if it is being chased. But I am still trying to figure out the best way to implement ...
6
votes
2answers
383 views
An odd performance problem rendering a simple scene (less than 14k vertices) in OpenGL using two vbos with LWJGL
Problem
I have been having a strange degrading performance issue rendering a simple scene containing two "chunks" of 4x4x4 cubes each.
Video of problem
This is a screen capture showing my console ...
6
votes
1answer
768 views
Minecraft Mod portable torch/lantern
I have just started making a mod for minecraft, I learned how to make items and import custom png's and have gotten all of that to work. I have been searching around the code trying to find a way to ...
6
votes
1answer
562 views
Is Java AWT suitable for 2d game rendering?
[Reposting this question from stackoverflow, as it was pointed out that it fits better here.]
I'm currently porting my 2D game engine to Java. I looked at some of the game libraries pointed at here ...
6
votes
2answers
339 views
Where can I find some beginners to learn and work with? [closed]
I am very new to game programming. I am currently studying Java (Android mainly) and I know what it takes to make a game, as well as how to render it via OpenGL. Finding some others at nearly my level ...
6
votes
1answer
630 views
For 2D tiled maps is all object and NPC data loaded into memory when the map is loaded?
I'm creating a text RPG in Java, but I think this applies for a GUI as well with regard to the data structure. Each Level is a tiled map. Each Tile object has an (X,Y) coordinate, and references to ...
5
votes
5answers
1k views
Do I really need to “learn” C# for XNA if I know Java?
I want to start developing in XNA. As of now, I do not know C#, but I would consider myself "good" at Java. I have looked at some C# code and it looks almost identical to Java. After looking at Java ...
5
votes
2answers
330 views
One Dimensional Perlin noise vs Multi-Dimensional
I am reading through a book called "The Nature of Coding" and I am working on porting the examples from Processing.js to Regular old Java. The example I am on uses the following method call in ...
5
votes
6answers
909 views
Is it possible to use Java as a scripting language?
Is it possible to use Java as a scripting language for a C++ engine/game?
I understand that you need to make a binding to the interpreter, but I haven't seen any around.
5
votes
4answers
644 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 ...
5
votes
4answers
559 views
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 ...
5
votes
2answers
2k views
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
_______.________
| ...
5
votes
2answers
945 views
How to shuffle cards in a card game?
I am new to programming, I am trying to develop an app for Android
Can anyone suggest me how to write code for "shuffling the playing cards"?
5
votes
2answers
2k views
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 ...
5
votes
3answers
1k views
A more sophisticated ball-paddle collision algorithm for Breakout?
I have a simple breakout game I'm working on. The collision code is solid; things bounce as they should and don't pass through things or do other funkiness, but the reflection is a bit simplistic. As ...
5
votes
3answers
613 views
Programming Languages Recommendations: A Space shooter game that allows two people to play [closed]
Do you remember an arcade game, that allowed two people to versus or play each other? It was a Galaga/Gradius type game.
Me and a couple of other people I know want to make a game like this. We want ...
5
votes
4answers
603 views
Should each Entity have its own update and render methods?
First, the questions:
Should each Entity (which are classes like Character, Tree, Enemy) have its own update() and render() methods?
If that's the case, then should I use Interfaces like ...
5
votes
2answers
337 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 ...
5
votes
2answers
251 views
Is it legal to pack LibGdx libraries in my jar file? And to obfuscate them?
I'm using LibGDX and deploying a runnable jar file, using the Eclipse feature, with libraries extracted into it. There are also .so files and .dlls inside.
1 . Is it legal to do so? I didn't find ...
5
votes
3answers
494 views
How can I make a character move forward in a certain direction?
I have an entity class which is updated every game tick. Let's just assume said entity moves forward constantly. What i want to know is, how can i make it so that i can give an angle to a function and ...
5
votes
4answers
305 views
What version of Java should I target for applets?
I recently deployed an applet that seems to require Java 6 Update 24. I assume the reason for this requirement is the matching JDK version I used to create the applet (I am new to Java).
The fact ...
