The Lightweight Java Game Library (LWJGL) provides access to high performance, cross-platform libraries OpenGL and OpenAL. Additionally LWJGL provides access to controllers such as Gamepads, Steering wheel and Joysticks.

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1answer
163 views

OpenGL glMatrixMode rotation

I'm stuck on trying to figure out how to rotate the viewport(or camera). So far I've figured out I need to use the function glRotatef and glMatrixMode(GL_MODELVIEW). But I have no idea how to apply ...
0
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1answer
509 views

Does using LWJGL and Slick2D yield promise for the future of my project? [closed]

I've been looking around the net for months now in an attempt to find the most appropriate tool for my needs. I haven't had a lot of time to devote to the creation of systems that could possibly ...
11
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1answer
741 views

OpenGL - white edges on cubes

In a minecraft-like game I'm making, I get white edges on my cubes: It is much more noticeable in darker textures. The textures are being setup like this: glTexParameteri(GL_TEXTURE_2D, ...
2
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2answers
1k views

OBJ model loaded in LWJGL has a black area with no texture

I have a problem with loading an .obj file in LWJGL and its textures. The object is a tree(it's a paid model from TurboSquid, so I can't post it here,but here's the link if you want to see how it ...
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1answer
83 views

Why are only some of my objects being rendered?

Every time I create a new asteroid the previous one is no longer rendered? I did some debugging and printed out the size of Array-List 'Small' and when a new asteroid is created it doesn't go down, ...
2
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2answers
318 views

16-bit PNGs in Slick2D

I'm working on a project and I'm using some 3rd party sprites just to get it off the ground; recently I've come into a hitch. Slick2D doesn't seem to want to load my images. That is, it will warn me ...
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1answer
2k views

LWJGL - Mixing 2D and 3D

I'm trying to mix 2D and 3D using LWJGL. I have wrote 2D little method that allow me to easily switch between 2D and 3D. protected static void make2D() { glEnable(GL_BLEND); ...
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3answers
197 views

Translating an Object to a certain Vector 3 in OpenGL and Java LWJGL

So after almost two hours, I got the hang of using glTranslated() (with Java and LWJGL). If I am correct, applying glTranslated on an object moves that object with the x,y,z relative to the previously ...
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2answers
2k views

Rotating a Quad around it center

How can you rotate a quad around its center? This is what im trying to do but it aint working: GL11.glTranslatef(x-getWidth()/2, y-getHeight()/2, 0); GL11.glRotatef(30, 0.0f, 0.0f, ...
0
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1answer
95 views

What is a fast way to darken the vertices I'm rendering?

To make a lighting system for a voxel game, I need to specify a darkness value per vertex. I'm using GL_COLOR_MATERIAL and specifying a color per vertex, like this: glEnable(GL_COLOR_MATERIAL); ...
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1answer
223 views

Java game object pool management

Currently I am using arrays to handle all of my game objects in the game I am making, and I know how terrible this is for performance. My question is what is the best way to handle game objects and ...
0
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2answers
315 views

LWJGL - OpenGL - Texture shading

I want to use LWJGL to create a shader that all it does is change the color of the given texture. For example I tell it to draw the letter A using a sprite sheet then I can tell the shader to draw the ...
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2answers
2k views

LWJGL Text Rendering

Currently in my project I am using LWJGL and the Slick2D library to render text onto the screen. Here is a more specific example: Font f = new Font("Times New Roman",Font.BOLD,18); font = new ...
1
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1answer
323 views

Rotating a cube using jBullet collisions

How would one go about rotating/flipping a cube with the physics of jBullet? Here is my Draw method for my cube object: public void Draw() { // center point posX, posY, posZ float ...
3
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1answer
408 views

How can I set the rotation of a shape to the same as my image?

The way you set rotations of images is different from setting shape rotations. So how can I make the shape have the same rotation as my image? This is how my image rotates: ...
0
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1answer
350 views

Color Picking Troubles - LWJGL/OpenGL

I'm attempting to check which object the user is hovering over. While everything seems to be just how I'd think it should be, I'm not able to get the correct color due to the second time I draw ...
3
votes
1answer
340 views

Best way to Draw a cube for 3D Picking on a specific face

Currently I am drawing a cube for a game that I am making and the cube draw method is below. My question is, what is the best way to draw a cube and to be able to easily find the face that the cursor ...
0
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1answer
668 views

How can I achieve this lighting with OpenGL?

I'm currently trying to implement a type of "smooth" lighting. How can I achieve lighting which looks like this: http://dl.dropbox.com/u/1668516/concept/warp3.png Using OpenGl. I've attempted to use ...
5
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3answers
1k views

How Do Day Night Cycles Work?

I know that this is a vage question, but how do day night cycles work in video games? How do I get started programming one? I have researched for a while, but the only thing I saw was "unity 3-d day ...
2
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3answers
461 views

OpenGL Get Rotated X and Y of quad

I am developing a game in 2D using LWJGL library. So far I have a rotating box. I have done basic Rectangle collision, but it doesn't work for rotated rectangles. Does OpenGL have a function that ...
6
votes
3answers
860 views

Understanding how to create/use textures for games when limited by power of two sizes

I have some questions about the creating graphics for a game. As an example. I want to create a motorbike. (1pixel = 1centimeter) So my motorbike will have 200 width and 150 height. (200x150) But the ...
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1answer
883 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 ...
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1answer
1k views

PokeMMO. How they do it?

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 ...
2
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1answer
230 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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2answers
584 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, ...
2
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1answer
890 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 ...
0
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1answer
104 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. ...
5
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2answers
710 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 ...
2
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1answer
2k views

Menus for LWJGL - Swing or other?

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
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1answer
683 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 ...
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1answer
2k 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?
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1answer
836 views

Slick2D: Changing an Image's colour to Color.white

I am working on a game where we would like the enemies to flash white when hit by a bullet. Ideally, we would like to use the same mechanism to render an Image in any colour. Our Images are all png ...
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3answers
826 views

Easiest way to create a 2d game in Java? [closed]

I would like to create a 2d game in Java, but tutorials online for game libraries such as LWJGL are usually filled with errors once I compile the project. Most people do not explain very well, and ...
4
votes
2answers
1k views

Ray Picking Problems

I've read so many answers on here about how to do Ray Picking, that I thought I had the idea of it down. But when I try to implement it in my game, I get garbage. I'm working with LWJGL. Here's the ...
1
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1answer
323 views

Texture switching with a entity system

I'm using thinking of using an entity system in my game. So far I've been using Artemis with success. However, I have a question about texture switching. I read that switching textures too often is ...
3
votes
2answers
415 views

Textures on top of other textures when using VBOs

I'm currently making a cube style game. With chunks being drawn with VBOs. I'd like to know if there is a way to create an overlay texture on top of the existing texture without the need to rebuild ...
2
votes
3answers
4k views

Where can I find tutorials for LWJGL? [closed]

I don't know if this is against the FAQ so if you close this, it'll be no surprise. I have done research but all the tutorials I have seen have been to hard to follow; I reckon there are better ones ...
0
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2answers
262 views

Matrix loading problems with jbullet and lwjgl

The following code does not load the matrix correctly from jbullet. //box is a RigidBody Transform trans = new Transform(); trans = box.getMotionState().getWorldTransform(trans); float[] matrix = new ...
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votes
1answer
171 views

Issues with networking in my Java game, Client crashes when I try and read from the server input

A buddy and I have been programming a code game over the last 2 weeks, it is intended to be a multiplayer game with the ability to have 2 players play against each other. I am running into an issue ...
3
votes
1answer
1k 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 ...
3
votes
3answers
4k 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 ...
4
votes
1answer
1k 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 ...
0
votes
1answer
954 views

How to implement HUD

I'm wondering how one could implement an HUD in LWJGL. I've seen tutorials on this, but they don't seem to work. I know the basic structure goes like this: init3d(); // 3d code init2d(); // HUD To ...
1
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1answer
243 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 ...
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1answer
438 views

First person camera is somehow “magically” expanding

I'm making a first-person game, and I've gotten the camera done (modified version of Lloyd Goodall's code), but whenever I scale an object, it doesn't appear bigger, but the speed of movement seems to ...
4
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5answers
990 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 ...
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2answers
648 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 ...
6
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2answers
484 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
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1answer
156 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 ...
0
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0answers
56 views

OpenGL 2D Depth Perception [duplicate]

Possible Duplicate: OpenGL 2D Depth Perception I have a 2D RPG game written in Java using LWJGL. All works fine, but at the moment I'm having trouble deciding what the best way to do depth ...