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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Android Bitmap: Collision Detecting

I am writing an Android game right now and I would need some help in the collision of the Pawns on screen. I figured I could run a for loop on the Player class with all Pawn objects on the screen ...
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1answer
48 views

Get stick analogue XY position using Jinput in lwjgl

I want to capture the movement of the analogue stick of the gamePad. is there any equivalent function to this? public void mouseMoved(MouseEvent mouseEvent) { mouseEvent.getX(); //return the X ...
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24 views

Libgdx project “Not Responding” when in debug mode

So the problem I am encountering is that whenever I attempt to debug my Libgdx desktop project and Android project the "app" is constantly "frozen" or "Non responding." By this I mean that I cannot ...
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1answer
50 views

Box2DLights - the center of sprites are always 100% unlit (black) unless Xray is on

I'm using a ConeLight at 180 degrees, with this setup: pl = new ConeLight(rayHandler, 256, new Color(0.5f, 0.5f, 0.5f, 1f), 280f, 400 - x, 300 - y, 0, 180); And the object I'm casting a shadow on ...
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2answers
77 views

Switching a project written in Lua to a compiled language [closed]

I am experimenting with game development in Lua using the Love2D framework, and while it works fine, I am getting tired of using a dynamic scripting language. I would like to have better performance, ...
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1answer
24 views

LibGDX how to change animations

I have a Player Class and i have 3 different Animations for it. I can render them perfectly but i don't know how to change from one animation to another. For exmaple i have 3 animations, one for ...
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1answer
174 views

Java collision detection and player movement: tips

I have read a short guide for game develompent (java, without external libraries). I'm facing with collision detection and player (and bullets) movements. Now i put the code. Most of it is taken ...
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2answers
3k views

LibGDX - Check if currently on Android/Desktop

I'm using LibGDX and flixel-android to build a Desktop/Android game. It feels like there should be a way of checking to see if you're currently being run on an Android device, the Desktop, and so on, ...
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0answers
31 views

JBullet quaternion to Euler angle conversion causes strange flipping behavior

I am making a game using JBullet (a Java port of C++'s Bullet library) for the physics and LWJGL for the graphics. However, JBullet measures angles in quaternions and LWJGL uses Euler or ...
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vote
1answer
346 views

How can I drag a polygon based on a mouse-moved event?

I have drawn a polygon in Java using java.awt.Polygon. I want to move that polygon with the mouse (by dragging it). I know that I have to use mouseDragged method in addMouseMotionListener. That way I ...
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1answer
372 views

Including slick2d or slick-util in maven build?

I'm converting a project to lwjgl and trying to use slick-util as well. There's no slick-util maven repo anywhere (nor slick2d itself anymore). I've included local dependancies before using ...
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1answer
58 views

How to use the zoom gesture in libgdx?

I found the example code for the GestureListener class, but I don't understand the zoom method: private float initialScale = 1; public boolean zoom (float originalDistance, float currentDistance) { ...
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2answers
211 views

Is it possible to create 3d games with good performance in java? [closed]

Recently i use Javafx 8 for creating small 2D games , but i think it can't manage memory and other things very well .I see Jmonkey jmonkeyengine as a game engine for Java and i see some videos of ...
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1answer
784 views

Dependency setup between libGDX projects in Eclipse IDE

For my game I'd like to create another project that extends the functionality of libGDX and since it will be an independent project it could be easily reusable. How can I achieve this in Eclipse IDE? ...
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0answers
45 views

Quaternion Matrix Camera Example in LWJGL

Does anyone have an example of a quaternion matrix camera for use in LWJGL? I have been looking for months now and I cannot find a single complete example that contains an update function (showing how ...
1
vote
1answer
142 views

If I convert my LibGDX game to an exe, is it legal?

I have a LibGDX jar file, and I want to have it as an EXE. Would that be legal? (Using launch4j) Also, how do I obfuscate a LibGDX game?
2
votes
1answer
148 views

JBox2D Polygon Collisions Acting Strange

I have been playing around with JBox2D and Slick2D and made a little demo with a ground object, a box object, and two different polygons. The problem I am facing is that the collision-detection for ...
0
votes
1answer
124 views

Fixing game loop to 60fps makes animation very jittery

ns is 1000000000 / amountOfTicks; long now = System.nanoTime(); delta += (now - lastTime) / ns; lastTime = now; if (delta >= 1) { tick(glad); updates++; ...
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1answer
69 views

The sprite will not move in libGDX

When I ran the android application, The sprite image will not move when I press the input keys. I followed a tutorial based on input keys and wish to know what's wrong. Can anyone see what's wrong? ...
2
votes
2answers
223 views

Expandable 2d environment by spawning and controlling individual tiles

what is the best way to implement an environment that is "expandable" in every direction so that when the player moves in any direction a new row or column of tiles that can be manipulated ...
0
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1answer
40 views

When and how to apply affine translations to vertices of a mesh with LWJGL

So, I have a rigid body class, containing a list of vertices and a 4x4 transformation matrix. At the moment, I'm applying the transformation matrix to each vertex individually, and am unable to revert ...
-1
votes
1answer
118 views

How do I find the tile I'm standing on?

I want to get the specific tile I am standing on. My Tiles are in an Arraylist so I can destroy them later. How can I do this? Here's my Level-class (where my Lists are): public class Level { ...
0
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1answer
56 views

Bodies going through the walls of a box

I have a game where the user controls a box to collect falling balls. However, very often the balls will just fall through the walls of the box and be flung away. What could be causing the balls to do ...
0
votes
1answer
49 views

Help with dropping items in a game [duplicate]

I am making a game where i have items or blocks stacked on top of each other. What i would like to do is, when the first item(or the item at the bottom of the stack) is removed, i would like to shift ...
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0answers
72 views

Slick2D v LibGDX: [closed]

Okay. You might have seen some of these posts on forums here and there, but I wanted to ask this here mainly because everyone here is focused on game-dev and there seems to be quite a few Java ...
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0answers
63 views

Android - OpenGL ES 2 - Cube with different texture in each side

I need to create a 3d cube, with a different texture on each side. Here is my cube class, which my other classes extend: import java.nio.ByteBuffer; import java.nio.ByteOrder; import ...
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3answers
109 views

Set value in an array[3], that the sum of all three values is always 1.0

So I'm working on a Civ like game right now and want to have a setting how taxes are split in gold income, science and luxury goods. private double[] rate = new double[] { 0.4, 0.6, 0.0 }; now I ...
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2answers
125 views

How do i make collision detection more effective?

In the game i am developing, there are 220 circles that are not moving. One of the circles is moving and in every update, it iterates through an ArrayList that contains all the circles and check if it ...
2
votes
1answer
266 views

How do I make my camera follow a Box2D object?

I'm implementing a camera in my game. It worked for regular objects, but I began using Box2D and obviously things changed a bit. I have a Body object that I want to draw at the center of the screen. ...
1
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1answer
40 views

Preventing diagonal movement

I was originally fine with diagonal movement but it's clashing with my sprite animation... public void keyPressed(KeyEvent e){ int key = e.getKeyCode(); switch(key){ case ...
0
votes
1answer
86 views

LibGDX drawing map using tiles without space

I am making a board game. To draw the map on the board I use different tiles. On some screen the map looks good but on some other screens there is a space between the tiles. How can I do so there ...
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0answers
14 views

Help with Interactive Grid for Turn-Based-Strategy game [duplicate]

So right now I have all of the menus, and game saving/loading stuff done, but I need help creating my actual game. I have a basic idea of what I want the game to be like. But I just need help with the ...
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vote
3answers
116 views

2D Side Scroller Game Without A TileMap

I want to create a 2D side scrolling game in a similar style as the game "Castle Crashers". (Go to: http://store.steampowered.com/app/204360/ to see some pics of the game). I have experience ...
1
vote
1answer
121 views

Is game maker studio actually flexible enough to cater to an avid programmer? [closed]

After I got burned by RPGMaker which seemed fine what with the semi-open Ruby-like engine until you encountered some nasty surprises like the draconian resolution limitations etc., I've become more ...
0
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1answer
74 views

How to efficiently change VBO size?

I have created a menu class and now I'm working on getting it to render using OpenGL's VBO's. The menu is fairly simple, it has a number of buttons, the user can press up and down to highlight the ...
1
vote
1answer
110 views

How to make an Actor follow my finger

I'm back with another question that may be really simple. I've a texture drawn on my spritebatch and I'm making it move up or down (y-axis only) with Libgdx's Input Handler: touchDown and touchUp. ...
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1answer
36 views

Get position of Fixtures

I'm constructing a Body (a box2d body using AndEngine) using multiple Fixtures and later I need to get the world position of these Fixtures. Currently I am trying something like this; // ...
0
votes
1answer
105 views

Line of Sight with Bresenham

I have a simple function to determine whether an entity can see another, in a top-down tile-based game (this is actually a tiny bit more complex in my game, to determine whether to see the first ...
1
vote
1answer
86 views

LibGDX Box2DLights shadow offset problem on bodies

Hello I just started to use LibGDX, and it's awesome. I looked at the Box2DLights library, and started to learn how the lighting work here. I got something up: As you can see, it works, but the ...
0
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1answer
36 views

Picking a local origin as the centroid of given three points in 3D

Given three points non-collinear P, Q, R in 3D, I need a generic method to generate x', y', z' unit vectors that behave like origin of local coordinate system. x' and y' vectos should be on the plane ...
1
vote
1answer
63 views

Tilemap graphic rendering

Say i have 10 towns in my world map. the world map right now is just a very large Tilemap. I'm curious as to what the standard is. I think it would be much more efficent to have a Tilemap for each ...
2
votes
1answer
67 views

Where to implement textures for tiles?

So I just learned the basics of Java and was ready to try to create a protoype game in the style of Civ. So a tile&turn based game. I created an enum for the different tiles: public enum ...
1
vote
1answer
44 views

Cannot Efficiently Loop SequenceAction

Why doesn't this work and how do I fix it/create a different, working loop for this SequenceAction? public void setLoopingFade(float time) { fadeLoop = Actions.sequence(Actions.fadeOut(time), ...
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vote
1answer
200 views

How do I efficiently collide and match groups of coloured circles?

I am new to game programming and working on clone of this game in libgdx. The game has some static balls and one ball that moves. I want to check if the moving ball collides with any static ones, but ...
0
votes
1answer
38 views

Master sound volume in LibGDX

I have been searching everywhere for master volume for sound and music in LibGDX but to no avail. Can anyone tell me if it is implemented somewhere or do i need to implement such functionality myself? ...
1
vote
1answer
148 views

How should I implement the “Observer” pattern with respect to a game world?

I'm thinking of ways to implement the Observer pattern in a game I'm developing at the moment. I can have a Game World (local map) with Game Objects (player, NPCs, monsters etc...) inside of it. Other ...
0
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1answer
97 views

TiledMap not drawing completely [closed]

While attempting to constrain camera scrolling to within the TiledMap I discovered that it seems the renderer for the map is not drawing the entire map. The map is 1600x960px so one would assume the ...
0
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0answers
20 views

Slick2D changing image's color with drawFlash and using alpha

I have an image, where I have a round soft white feathered ball in the center of it. I plan to use it for my lighting in my 2D game. I could not find any proper way to drawing lighting with many ...
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0answers
36 views

Slick2D/LWJGL Drawing coloured lights problem

I am using the Slick2D engine. I've followed this snippet for creating light sources. I have followed step step, added what is actually important for me, and tested it and the lighting effects ...
1
vote
1answer
200 views

What alternatives are there for creating Keyboard/Mouse controls in LWJGL?

So I'm currently working my way through openGL tutorials, using LWJGL to do all my work in. However as I get to the part on how to access Keyboard and Mouse events in this library, I stumble across ...