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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2answers
326 views

Android Game Development problem with Speed = Distance / Time

I have been coding speed for an object. I have made it so the object will move from one end of the screen to another at a speed depending on the screen size, at the monemt I have made it so it will ...
4
votes
6answers
2k views

Should my game handle collisions in the Player object?

I'm making a 2D platform game. Right now I'm just working on making a very generic Player class. I'm wondering if it would be more efficient/better practice to have an ActionListener within the Player ...
0
votes
1answer
468 views

How can I run a .jar file with XNA?

Could someone help me to develop a method to run any .jar file (with parameters) from in C# with XNA?
3
votes
1answer
2k views

With Slick, how to change the resolution during gameplay?

I am developing a tile-based strategy game using Java and the Slick API. So far so good, but I've come to a standstill on my options menu. I have plans for the user to be able to change the ...
0
votes
1answer
801 views

Can't remove JPanel from JFrame while adding new class into it

Basically, I have my Frame class, which instantiates all the properties for the JFrame, and draws a JLabel with an image (my title screen). Then I made a separate JPanel with a start button on it, and ...
2
votes
4answers
3k views

Question about JPanel “transition” for Java Swing

I want to make like a sort of main menu (in GUI). When the user clicks the start button, the screen transition into another "screen" (JPanel). This image will make it easier to understand. http://i....
2
votes
2answers
798 views

Help Decide between C#/XNA client or Java

The game runs on a client/server architecture currently setup for TCP, and the client code was built in AS3 to be web based. What we're running into is 3 problems for the client. AS3 has no ...
3
votes
3answers
8k views

How to render axometric/isometric tiles that are a 2d array in logic, but inclined 45º visually?

I am making a tile-based strategy game which i plan to have 2.5D visuals in an axometric/isometric fashion. Right now i'm programming it's logic and rendering it as a literal 2-dimensional array (...
9
votes
3answers
18k views

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 ...
4
votes
3answers
610 views

Box2d Collision problem

I'm not good with words so here's a picture to describe my problem: In my game there is this big ball which the user can move on x-axis only. Now, if the ball is falling like the red one, it's ...
1
vote
2answers
2k views

Adding a short delay between bullets

I'm having some trouble simulating bullets in my 2D shooter. I want similar mechanics to Megaman, where the user can hold down the shoot button and a continues stream of bullets are fired but with a ...
2
votes
3answers
1k views

How to load chunks of 2d map segments when player reaches a certain point?

In my 2d platformer (made with Java and Slick2d), random maps are made by combining different segments together and displaying them one after the other. My problem is that I can't load too many ...
4
votes
2answers
456 views

Minesweeper: Mouse listener problem

I have wrote a code for game Minesweeper and there is no problem with the graphics,but there is some problems with MouseListener. Here is my code /* * To change this template, choose Tools | ...
2
votes
5answers
1k views

Add delay between player jumps

I'm developing a platformer game and have implemented jumping for the player. The player is able to jump, but holding the up arrow causes the player to continuously jump. What would be the best way to ...
4
votes
1answer
2k views

Create the right pom.xml for LWJGL and Slick Project (Maven)

Can somebody tell me whats wrong with my pom.xml file? At this point I get this error if I start my *.jar file: C:\Users\Michael\git\freezing-robot\target>java -jar freezing-robot-0.0.1-SNAPSHOT....
4
votes
1answer
701 views

Store data on server or only in database?

I have been working on programming an online RPG in Java for a while now. It's a huge project and way too hard for me, but I'm having fun learning. server and client: Java database: MySQL I have ...
2
votes
3answers
685 views

For the handling of buildings on a tile-based strategy game, what aproach should I use?

On a tile-based game of the strategy genre, which allows the player to place buildings over the terrain tiles, there are multiple approaches that can be taken for handling such situation. The ones ...
3
votes
1answer
6k views

Drawing hexagonal grid on Android

I'm trying to draw a hexagon grid in my Android application. I don't want to reinvent the wheel here so I'm looking for some frameworks/libraries or just some basic ideas about how should one do this. ...
1
vote
1answer
671 views

AndeEngine Parallax / Sprite Depth?

What I'm attempting to do is create a game in which a space ship explores a large area of space. I'm randomly generating placement of planets, space stations etc. I want to use the ...
1
vote
1answer
324 views

Slick2D drawString with coordinates from bottom-left corner

For OpenGL text drawing I use Slick2D library. Default Slick2D 0:0 coordinates are at upper-left corner. But in my project I use bottom-left corner for 0:0. Is it real to configure Slick2D with bottom-...
2
votes
2answers
6k views

Simple Java networking game engine [closed]

I want to create a simple java networking game and search a networking engine that eases use of sockets etc. I have already read some questions on here and the internet about java networking for games,...
2
votes
2answers
637 views

Snake game - collision detection causing new position of apple to be rendered multiple times

I have a collision method implemented through the use of slick2d. When ever the snake collides with the apple, it causes the apple to be rendered in multiple places before the snake moves further ...
1
vote
1answer
524 views

Minecraft custom name laucher

I'm trying to create a custom name laucher for Minecraft. I run an offline server and was wanting to give some of my friends a laucher to use so they can play. I have done this before with a batch ...
-5
votes
2answers
172 views

Advice on OpenGL 2.1 [closed]

I'm looking to finally get into OpenGL to bring some game ideas of mine to life! As I want to aim for lower class systems I'm probably looking at OpenGL 2.0/2.1 using JOGL (as I know Java the best). ...
5
votes
5answers
2k views

How to get more than one window in Java LWJGL

I'm trying to write a game in Java LWJGL. And I need more than one (multiple) display window. By default I've got one display window where I can draw everything. But I'd like to split some data to ...
0
votes
1answer
223 views

How to define 648 units, with 22 different values in Java

A friend and I are currently looking at developing a game. We have 648 units that need to be defined, with 22 final values. To define the units in the game, we've created an abstract class with 44 ...
2
votes
3answers
13k views

Runescape Private Server - How does it work? [closed]

I've seen a lot of Runescape private servers lately. How do they work? Most of them are based on the old Runescape, but a few look exactly like the real Runescape. How do they make the servers? Has ...
1
vote
2answers
2k views

2D game with 3D models and terrains

I am approaching OpenGL and general gaming-development. I want to start by coding a simple 2D game in Java (lwjgl) but, since I can create models with Blender, I don't want to use 2D sprites, but a ...
1
vote
2answers
1k views

GL11.glTexCoord2f(1.0f, 1.0f); 1.0f screws the image up

I recently started using LWJGL in my java programs for the graphics. I'm currently working on a simple game, which I make, to get better at this kind of programming. I ran into some trouble when ...
7
votes
1answer
4k views

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 ...
-2
votes
2answers
364 views

Absolute newb Java programmer seeks “dumbed-down” tutorials/resources [closed]

I understand the basics of Java and Object Oriented Programming so far, and am still working on refining my understanding of it. I have sought several different resources - two books and Oracle's own ...
0
votes
2answers
2k views

3D: First Person Movement

I've searched and searched for a solution today but haven't found one. I have a Camera with Vector3 and also the camera has an angle. If I use this: hero.position.x += speedX; hero.position.z += ...
0
votes
1answer
553 views

JBox2D - how to get vertex positions?

I've created a triangle for jbox2d... public void createTri(){ PolygonDef shape = new PolygonDef(); shape.density = 2.0f; shape.friction = 0.8f; shape.restitution = 0.3f; ...
3
votes
3answers
817 views

Why does creating dynamic bodies in JBox2D freeze my app?

My game hangs/freezes when I create dynamic bullet objects with Box2D and I don't know why. I am making a game where the main character can shoot bullets by the user tapping on the screen. Each touch ...
1
vote
2answers
352 views

Resources for game networking in Java [closed]

I am currently working on a Java multiplayer game. The game itself (single player) already works perfectly fine and so does the chat. The only thing that is really missing is the multiplayer part. ...
-1
votes
1answer
560 views

What is the best way to make UI for an Isometric game in java [closed]

What do you think is the best way to make UI for an isometric game.. I dont have much experience in UI so im not sure where to start. I need something the mouse can interact with and that works good ...
2
votes
2answers
632 views

jMonkey Quest Database

I am building a game in jMonkey (Java) and I have so far only used default quest text. But now I need to start populating a lot of quests with text. My design requires A LOT of quests texts. What is ...
2
votes
1answer
78 views

Changing DisplayMode seems not to update Input&Graphic Dimension

I'm writing a small game using Slick and Nifty-GUI. At the program startup I set the DisplayMode using the following lines: AppGameContainer app = new ... app.setDisplayMode( 800, 600, false ); app....
0
votes
1answer
286 views

Minimap Around Perimeter of Screen, Code Provided

What I'm essentially trying to do is what a lot of FPS's nowadays do in regards to their HUD. When an objective is off-screen, a small icon / symbol is shown on the perimeter of the screen, basically ...
1
vote
3answers
3k views

How do I load tmx files with Slick2d?

I just started using Slick2D and learned how simple it is to load in a tilemap and display it. I tried atleast a dozen different tmx files from numerous examples to see if it was the actual file that ...
3
votes
1answer
3k views

Stuck trying to decompress sections in Minecraft Anvil files (.mca)

I've been trying to write some Java code to read .mca files, based on the information at http://wiki.vg/Map_Format and http://wiki.vg/User:Sprenger120 . I am at the point where I can read in the ...
3
votes
1answer
841 views

2D RPG - Character sprite size bigger than tile size

Ok so I'm trying to make a nice little RPG game in Java & Slick2D engine, the tiles are 16x16, so the collision array is also 16x16, how ever my character sprite is 16x20 What would be the best ...
8
votes
2answers
8k 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 _______.________ | ...
6
votes
2answers
731 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 ...
0
votes
1answer
167 views

How should I detect whether or not to enable Anti-Aliasing?

How can I detect the speed of the user's graphics card so that I can decide whether or not to enable advanced graphics features that would slow down the app on a slow card, such as anti-aliasing? I am ...
3
votes
2answers
540 views

Would it be too much overhead to keep a HashMap of variables on a server per object for the purpose of syncing object changes with the client?

I am currently writing a server for a multiplayer game. I am trying to find a good solution for synchronizing GameObjects across the server. The server sends each client a snapshot of every object in ...
1
vote
2answers
776 views

CCSpriteFrameCache: Frame '%s' not found

I have just started using the Cocos2D library for Android. I am trying to make a walking bear animation. For that I am using a CCSpriteFrameCache, but I'm getting a "frame not found" error in the log....
0
votes
2answers
1k views

Java OpenGl Rotating Cube Problem!

OK, so I successfully learned how to bind textures to quads and display this cool looking crate. However, when I rotate the cube something goes wrong. During rotation the back-face of the cube ...
2
votes
1answer
985 views

Problems with moving 2D circle/box collision detection

This is my first game ever and I'm a newbie in computer physics. I've got this code for the collision detection and it works fine for BOTTOM and TOP collision.It miss the collision detection with the ...
-2
votes
3answers
393 views

Client Server what do i need?

Simple question if the Client is Android Game App That send data to the server for Storing/Recalling Data as well as calculating data? I hear sql is good for simple database stuff.what is good for ...