Java is both a popular programming language and runtime environment which allows Java programs to run unchanged on most hardware and software platforms.

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1answer
2k views

Andengine. Put bullet to pool, when it leaves screen

i'm creating a bullet with physics body. Bullet class (extends Sprite class) has die() method, which unregister physics connector, hide sprite and put it in pool public void die() { ...
0
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2answers
180 views

sprite animation system height recalculating has some issues

Basically, the way it works is that it update the frame to show every let's say 24 ticks and every time the frame update, it recalculates the height and width of the new sprite to render so that my ...
2
votes
2answers
319 views

Updating “Inactive” Chunks

In my game, the only chunks (4x4 areas of tiles) in memory are the ones that the player is in. However, chunks need to have updates applied to them over time. A (likely) well-known example would be ...
-8
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1answer
1k views

Is the game Wakfu really fully coded in JAVA? [closed]

If so, this shows that you can develop amazing logic/graphic wise games with JAVA. I think this should be used as an example when people ask about games developed in java instead of just mincraft and ...
1
vote
1answer
2k views

PokeMMO. How they do it? [closed]

Well PokeMMO is a JAVA game project which basically is the original FireRed title for the GBA made online. They know this type of projects don't last long because of the copyrighted material used, but ...
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votes
2answers
789 views

Coding games similar to Machinarium in Java? [closed]

I wan't to see how great of an idea is to start a game project like Machinarium coded in Java. I'm not really good at Java yet, but it's the programming language I decided to go with first. Not really ...
4
votes
1answer
353 views

Android Java: Way to effectively pause system time while debugging?

In my project, I call nanoTime and use that to get a deltaTime which I pass to my entities and animations. However, while debugging (for example, stepping through my code), the system time on my ...
2
votes
1answer
347 views

How do I efficiently generate chunks to fill entire screen when my player moves?

In my game I generate chunks when the player moves. The chunks are all generated on the fly, but currently I just created a simple flat 8X8 floor. What happens is that when he moves to a new chunk ...
1
vote
2answers
3k views

LibGdx drawing weird behaviour

I am finding strange behaviour while rendering TextureRegions in my game, only when pausing it. I am making a game for Android, in Java with LibGdx. When I comment out the line "drawLevelPaused()" ...
2
votes
1answer
212 views

Colored Collision Detection

Several years ago, i made a fast collision detection for 2D, it was just checking a bullets front-pixel's color to check if it were to hit something. Lets say the target rgb color is (124,200,255) ...
-4
votes
2answers
168 views

Bubble sorting my array does not sort it [closed]

I sort an array of chunks by doing this: for (int i =0; i<this.getQueue().size();i++) { for (int j =0; j<this.getQueue().size()-i-1;j++) { Chunk temp1 = ...
1
vote
2answers
141 views

Back to front drawing in an Unorginized array of tiles

I have an Array of tiles in no particular order. How would I do a isometric back to front rendering on it? Do I HAVE to order it?
0
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2answers
2k views

Efficient way to render tile-based map in Java

Some time ago I posted here because I was having some memory issues with a game I'm working on. That has been pretty much solved thanks to some suggestions here, so I decided to come back with another ...
2
votes
3answers
2k views

Pathfinding library

I'm an amateur game developer and somewhat amateur Java developer as well. I'm trying to find a way to have path finding for my game(s). I've first Googled for some existing Java libraries that have ...
2
votes
1answer
403 views

How to draw Isometric game Back to front

What is the for loop or algorytm for a 2D array of tiles that I would render the tiles back to front like this:
2
votes
1answer
315 views

Java getResourceAsStream as local resource

Before using LWJGL, I used the Graphic method, and there I displayed imageicons, and I had the picture file located in the resources. I used: ImageIcon tcard = new ...
1
vote
1answer
185 views

Model View Control Issue: Null Pointer Initialization Question

Good morning again. This is David. Please, I need an urgent help regarding control model view where I making a code that uniquely separating into groups: An Activity Java Class to Display the ...
1
vote
2answers
738 views

LWJGL GL_QUADS texture artifact

I managed to get working LWJGL in Java, and I loaded a test image (tv test card), but I keep getting weird artifacts outside the image. Code: glBegin(GL_QUADS); glTexCoord2f(0, 0); glVertex2i(10, ...
0
votes
1answer
158 views

Gravity stops when side-collision detected [closed]

Please, look at this GIF: The label on the animation says "Move button is pressed, then released". And you can see when it's pressed (and player's getCenterY() is above wall getCenterY()), gravity ...
2
votes
2answers
277 views

Convenience of mySQL over xml

Currently I use XML to store specific information to correctly load a few things such as a list of specfied characters, scenes and music, Once more I use JAXB in combination with standard ...
2
votes
1answer
1k views

Where can I find the library for org.newdawn.slick.opengl.Texture

I started making a game in Java, and someone on stackoverflow recommended me LWJGL. I found some examples, and they worked. Later I wanted to test sprites and every example that I found that loads ...
4
votes
1answer
697 views

Island Generation Library

Can anyone recommend a tile map generator (written in Java is a plus), where one can control some land types? For example: islands, large continents, singe large continent, archipelago, etc. I've ...
0
votes
2answers
556 views

Negative timeout value in Variable Timestep loop

I was working on my game loop and I came across an odd problem. The loop was working fine, my states could render, received updates, etc. I then proceeded to create my Input system, which, also works. ...
-1
votes
1answer
762 views

How do I increase the size of a buffered image to the left and upwards?

I need to know how to increase the size of my buffered image to the left and up, not just the right and down. bI = new BufferedImage(yMax*size*5, xMax*size*5, BufferedImage.TYPE_INT_RGB);
1
vote
2answers
2k views

Creating maps and tileset for a 2d java game

I'm not a completly beginner to java, so I decided to write a map loader and a tileset loader myself instead of using a tilemap editor like Tiled. I'm using Slick & LWJGL for my game. The plan ...
10
votes
3answers
3k views

Composition heavy OOP vs pure entity component systems? [closed]

I admit, I have made the sin of overusing, and even abusing inheritance. The first (text) game project that I made when I was taking my OOP course went as far as "Locked door" and "unlocked door" from ...
1
vote
1answer
85 views

Variable Visibility Class Interaction

I have a very general question about how game classes interact with eachother in a growing RPG game project I'm working on. (Writing it in java/Slick2D, not that is matters because the question is ...
0
votes
1answer
106 views

Menu selection wont stay on selected option

My Menu has a START and a QUIT option. I'm using a controller's D-PAD for selection. The game begins with START highlighted. When I push the down button on the D-PAD, it highlights the QUIT option. ...
0
votes
2answers
233 views

Java applet game design no keyboard focus

THIS IS PROBABLY THE WRONG PLACE. POSTED ITHERE (STACKOVERFLOW) I'm making an applet game and it is rendering, the game loop is running, the animations are updating, but the keyboard input is not ...
0
votes
3answers
1k views

How do you make bullets move at an angle in different angles using delta

I'm having trouble making my bullets move at a steady pace using delta. I have the formula I used outside of slick2d, but it doesn't take delta into account. My bullets fly fast. How do I make them go ...
4
votes
1answer
2k views

Access vertex data stored in VBO in the shader

If I wanted to store extra data in a VBO for skinning (indices for indexing into an array of matrices of bones and floats for applying weights to those bones) How would I go about accessing that data ...
1
vote
3answers
1k views

How to efficiently manage animations and/or textures (resources) in a game?

I am using Java, particularly the Slick2D library. Seeing as this is my first game, I have no idea how I should manage the Animations and the textures in the game in a way to be both memory efficient ...
2
votes
1answer
2k views

How can I accomplish Pokemon-style movement over tiles in java?

I'm talking about where if you press a directional key once you walk over to the adjacent tile and can't do any other actions during the walk. I can get my character to move one tile width, but my ...
1
vote
1answer
212 views

Game Engine Collision Handler

I'm making a collision handler for a Java game engine. I made an interface called Collidable. I have a method called onCollision which takes the parameter of my Engine Game Object. public void ...
5
votes
2answers
964 views

Disadvantages of using multiple versions of OpenGL in LWJGL?

So, I'm trying to figure out LWJGL, and my goal is to use OpenGL 3.2 (because pretty shaders are pretty). But in every tutorial I can find for LWJGL, they import a bunch of different OpenGL versions ...
5
votes
1answer
206 views

Should I amortize scripting cost via bytecode analysis or multithreading?

I'm working on a game sort of thing where users can write arbitrary code for individual agents, and I'm trying to decide the best way to divide up computation time. The simplest option would be to ...
1
vote
1answer
603 views

First Minecraft mod not working: make a new sword

I am making my first mod and cannot see what is wrong with it. I am using MCP and Modloader. For my first mod I was going to make swords. I started with making a new EnumToolMaterials WOOD(0, 59, ...
0
votes
2answers
440 views

Player position triggering teleports

I'm developing a Minecraft plugin (bukkit) in which a server admin can create 'portals' - a small region that will teleport any players who enter it. I have the teleportation sorted and I know how I ...
0
votes
1answer
796 views

Java2D Game Flickering

I'm in the process of trying to get familiar with making games in Java, using the Swing library. Coding my Snake game however, I've got to a point where the game is flickering/ghosting and I haven't ...
1
vote
2answers
375 views

How do we adapt our game to work over a network?

A friend of mine has made a Java version of a popular board game in Java, and has it working for multiplayer on one PC with different turns for each player. He's mentioned he wants it to eventually ...
0
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2answers
3k views

I have created character human in blender. How to use it in Java/Android

Title says it all pretty much. I can't find anything online which explains it in details. I have created a character model in Blender and I want to use it in Android app. I want to make it move. ...
-4
votes
1answer
2k views

How to make NPC AI for my jme3 ninja game

My scene has a main character who is a ninja and an enemy which is a goblin and one monster but the monster has no animation so we can wait with him: How can I make the goblin actually move instead ...
-6
votes
1answer
554 views

Choosing the right game engine [closed]

1 down vote favorite I'm trying to create a game in java inspired by a Gameboy Color Zelda game. I'm exprienced in java but not in game programming. I've been doing a lot of research on game engines, ...
2
votes
5answers
3k views

How do i choose what technology to use for a 2D game like Pokemon? [closed]

I apologize in advance for the wall of text about to come. I've had an idea for a game for a while now, and am stuck at step 1 of game development: Choosing a language/engine. I've read a whole ...
1
vote
1answer
250 views

Invert colors Java rendering

I am making a 2d platformer in java using the slick2d engine. I only use 2 colors: black and white. I want to implement a feature were i invert the colors of certain entities. However i can't find a ...
1
vote
0answers
316 views

How do you program the right analog stick of a controller in JInput?

I have the Left Analog Stick programmed and accepting input (moving a character around). (getCompassDir() returns the values of the cardinal directions and NONE means the stick isn't touched): // ...
1
vote
1answer
2k views

Vector movement in space type game (Mouse rotation)

I'm having an issue with my movement in my 'game' prototype. It's basically not working and admittedly my knowledge with vectors is lacking. The issue I'm running into is that the ship won't move in ...
4
votes
3answers
2k views

Android “Activities” — one or many for games?

I've been learning Android in my spare time, and one of the first things every tutorial/guide will introduce to you is the concept of an "Activity." Everyone loosely defines an Activity as a screen ...
2
votes
2answers
2k views

Menus for LWJGL - Swing or other? [closed]

Okay so I want to create a main menu which includes several buttons and text fields, is there a built in library for LWJGL or would I use normal Swing and start a thread of the application? Its a 2D ...
0
votes
1answer
861 views

Trouble programming JInput for game controller

Due to lack of reasonable documentation, I have not been able to program inputs for using a game controller. The most I have ever found was how to detect if a controller is found and what it's name ...