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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1answer
441 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 ...
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1answer
238 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
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2answers
856 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
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1answer
169 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
291 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 ...
3
votes
1answer
2k 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
872 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 ...
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votes
2answers
1k 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. ...
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1answer
1k 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);
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2answers
3k 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 ...
12
votes
3answers
5k 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
90 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
112 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
350 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
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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
3k 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
2answers
2k 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
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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
255 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 ...
6
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2answers
2k 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
231 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
712 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
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2answers
487 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
1k 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 ...
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2answers
504 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 ...
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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. ...
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1answer
3k 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
644 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
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5answers
6k 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
361 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
489 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
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3answers
3k 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 ...
3
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2answers
3k 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
1k 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 ...
0
votes
1answer
1k views

Managing Game States

I'm thinking about making a StateManager for my game. I want to know how to design it; that is, how to use a stack to push and pop states onto, and draw them to the screen. For example, should each ...
0
votes
2answers
404 views

IOException java problem

I'm working through the Head First Java book, and one piece of code it makes me write looks like this: import java.io.*; public class GameHelper { public String getUserInput(String promt){ ...
0
votes
3answers
569 views

Saving and loading large tilemaps

As the title state, I have a large tilemap 400 x 400 x 26. Which currently just about fairs when using it. Saving takes a couple of seconds and it saves to a .ser file which is okay at the moment ...
2
votes
3answers
203 views

Positioning entities in adjacent maps

Say I have a 2D tile based game engine (I don't, but I will soon). I was wondering how I would manage drawing adjacent maps. That is, imagine we have a map that is 50 by 50 tiles wide. Then next to ...
8
votes
3answers
1k views

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 ...
1
vote
2answers
2k views

Java: Tile-based Collision Detection with Rectangles

There are a few tile-based collision detection questions out there, but none seemed to suit my need. I guess I really would like to know why this method for collision detection isn't working. It ...
3
votes
6answers
4k views

How to implement object velocity as a vector

I'm working on a Breakout game, and want to change the ball's movement code from how I currently do it, to something based on vectors (as I feel learning and implementing movement based on vectors ...
2
votes
2answers
509 views

Ray Picking: how can I find which copy of model to pick, if they share the same vertices, but each one is translated before being drawn?

I have a scene, in which I am drawing few different objects - each one has the same vertices and each one is translated to proper place before being drawn. While using libgdx (but I think that this ...
3
votes
2answers
838 views

Stop map from scrolling but let player still move?

I have a basic method of scrolling around on a map (moving the map instead of the player), but at when the player gets to a certain proximity to the edge, how do you stop the map from scrolling, but ...
5
votes
2answers
2k views

How to get smooth transition within slick?

When a player clicks start, my app immediately switches to the first level. My question is how do I incorporate a smooth transition within Slick?
1
vote
1answer
4k views

How do I play background music in Slick/LWJGL?

I'm trying to play music in the background for my opening menu, but cant seem to find a tutorial specifically on how to play a music file. Does anyone know how this can be accomplished?
0
votes
1answer
664 views

Rendering Loop Problem (Java)

I'm not new to programming, but I am relatively new to game programming. I am trying to create a version of Breakout, as a good basic game to get myself introduced to 2d game programming. I currently ...
3
votes
2answers
838 views

Design pattern for creating multiple enemies

I'm currently attempting to implement a factory method pattern for creating multiple different enemies after loading data from a file. But I'm having second thoughts on what would be the best design ...
5
votes
3answers
2k views

How to Align Gun with Bullets

I have a top-down 2D shooter. I have an image of a player holding a gun, that rotates to face the mouse. Please note that the gun isn't a separate image tethered to the player, but rather part of the ...
0
votes
1answer
205 views

loading a sequence of obj in java

I have 90 obj for an animation and currently using LWJGL. How would I be able to load them in sequence for 3000 seconds (a frame every 33 milliseconds)?