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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Collision in Tiled Map - LibGDX

I have collision code that deals with left or right or top or bottom. I am using Tiled Map with LibGDX. Question is: How do I detect collision with other cells by all 4 sides, and not specifically ...
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1answer
124 views

LWJGL Resize window and glTranslate breaking screen resolution

I'm trying to make a 2D Tile RPG game with LWJGL but I'm having a problem with the display resizing. I want the user to be able to re-size the window to whatever size they want just by expanding it ...
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1answer
269 views

How do I combine images into a single entity in libgdx?

I've googled this but can't seem to find anything on "concatenating" two images, especially with libgdx. Any ideas?
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2answers
80 views

Negamax Checkers not working properly [closed]

I'm trying to implement negamax in my checkers game. Sometimes the IA does the appropriate move, sometimes don't. Here is my code: private int evalPawns(ArrayList<Pawn> pawns, int turn){ ...
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0answers
68 views

Incorrect click event when resize on libGdx

I want to use scene2D, in libGDX, to detect click on object. I have this simple Game sample : Stage stage; @Override public void create() { this.stage = new Stage(1280, 720, true); ...
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1answer
83 views

Player doesn't jumps in Box2D implementation [closed]

Well, i'm trying to learn andEngine. I was able to successfully implement the move functionality for the player. Now, i'm trying to make the player jump using Box2D. I referred few online tutorials to ...
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1answer
75 views

JBullet - Detecting when 2 objects collide?

How can I detect when 2 collision objects collide with JBullet? Currently, all body types are going to be of type RigidBody. I have quite literally been trying to find the answer of this for over 2 ...
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1answer
95 views

Playing repeated sound in Java

I'm trying to play sounds in a Java game with the following code: AudioStream audioStream = new AudioStream(stream); AudioPlayer.player.start(audioStream); The stream variable is just an ...
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0answers
61 views

Using multiple uniform blocks in OpenGL

I'm using OpenGL with JOGL and want to use two unfirorm blocks in my vertex and pixel shaders. The following GLSL-Code shows the definitions:- uniform perObject { Material uMaterial; mat4 ...
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2answers
181 views

Do Java and Actionscript use OpenGL?

As far as I know there are only 3 base graphics libraries on Windows, the GDI, OpenGL and DirectX, is that correct, so that means that Java, Actionscript and all language use one of these 3 libraries ...
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0answers
33 views

GWT problem with Box2D WheelJoint

I am using the below libgdx java code for a wheel joint and rear axle using Box2D. This works fine for android, Desktop, but when I attempt to run through GWT I get the following error. at ...
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1answer
126 views

OpenGL ES 2 jittery camera movement

First of all, I am aware that there's no camera in OpenGL (ES 2), but from my understanding proper manipulation of the projection matrix can simulate the concept of a camera. What I'm trying to do ...
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2answers
93 views

Smooth input handling in Java [closed]

I am writing a Java game. My problem is to get a really smooth input. If I hit the key W the character has to go forwards, but if I hit A and release the W key, the character doesn't go left ways :( ...
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1answer
188 views

LibGDX How to take screenshot and use as background for pause screen

So I am trying to take a screenshot of the current situation during the PlayState of the game and when the player pauses the game I want the game to take a "screenshot" save it in memory and not as a ...
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1answer
147 views

Slick2D: Resizing the Window

I am using Slick2D, and I wanted to know which is the best way to resize, maximize, minimize the window, For example, Resizing all the images or scaling them, or Slick2D has an integrated method, Any ...
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1answer
98 views

How can I determine which square in my memory game was pressed?

I want to develop an simple memory game on Android. The memory game have squares like the picture below. How should I determine which of the square is pressed? Should I use image buttons? Personally ...
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1answer
122 views

Libgdx stage rendering issues

I'm using scene2d for the first time, and I can't get anything to draw EXCEPT the stage ui. Say I have my ui on top of my game screen: uiStage.act(): batch.begin(); gameSprite.draw(batch); //does not ...
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1answer
91 views

Java Game Gravity Collision Detection Working Incorrectly

I have searched for this question but was unable to turn up any results - I am making a Java platform game (I have created many top-down games, but nothing with gravity like a platformer) and I have ...
2
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1answer
184 views

How do I split a texture into differently shaped pieces with libgdx?

I want to split a texture into variously shaped pieces with libgdx, like the pieces of a puzzle game. TextureRegion.split() is not an option, as it splits into equally sized rectangular texture ...
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1answer
246 views

Distributed Multiplayer Game Server Architecture [closed]

I'm programming a multiplayer game for mobile phones.I'm working on a distributed server architecture for handling lots of concurrent players. Here is my architecture on my mind: Some questions ...
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1answer
85 views

LWJGL - Keyboard.next() not firing

I am trying to make a class which will handle all of my inputs, however Keyboard.next() isn't returning true. Here is my code. while(Keyboard.next()) { if(Keyboard.getEventKey() == ...
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votes
1answer
86 views

How to keep track of previous scenes and return to them in libgdx

I have three scenes: SceneTitle, SceneMenu, SceneLoad. (The difference between the title scene and the menu scene is that the title scene is what you see when you first turn on the game, and the menu ...
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2answers
66 views

Clamping large content to smaller area

I'm using OpenGL (with LWJGL) in Java, but the question is language independent. I have some region (a rectangle for simplicity), and, let's say, a big tiled map which I want to show in this area. ...
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0answers
53 views

Rendering bug in java

I'm using a simple rendering method in java to render tiles. Everything looks fine, but I notice that some rows grow 1 pixel when I move, and dhen shrink back, but I have no idea why. Infos: I'm ...
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0answers
21 views

Slick util TiledMap stops all other drawing

Im trying to add tile maps to my game. Before I added the tile map, I had 3 quads being drawn for testing purposes, but after adding the tile map, the quads are no longer drawn. private static void ...
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0answers
25 views

Java2D Swing rendering off center on ONLY OSX

I'm having an odd issue with my animation that is happening only on OSX, and not on windows. On my windows computer, the animation occurs full screen in a JFrame, as it is supposed to - however on my ...
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2answers
241 views

How do I add an image inside a rectangle or a circle in JavaFX?

Suppose we have a rectangle called r Rectangle r = new Rectangle(40, 20); and an image called image Image image = new Image("...src for image"); How do I fit the image inside the rectangle? ...
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1answer
204 views

What is the approach of creating an image puzzle game with libgdx

I would like to create a game which consists of taking a random image, slicing it up into some number of pieces (according to a selected difficulty) and letting the player solve the puzzle. I've ...
0
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1answer
83 views

Java: Irrelative Simplex Noise [closed]

I am stuck in another problem with Noise(I´ve never did this before). Now Terrain is generating and its quite well but its Irrelative to each other. Here is a screenshot As you might notice Each ...
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2answers
68 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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1answer
95 views

How to poll input for a gui in libgdx?

Ok, so my question is simple. How do you poll input with a GUI class without it affecting what's underneath the GUI? So suppose you have an RPG game with a gui for the d-pad and other controls: ...
0
votes
1answer
100 views

Why doesn't my animation stop when I press a key?

I wrote a program that animates two squares diagonally across the screen, from opposite sides. Used Timer object to do so. The squares collide with each other and also with the frame boundary to ...
0
votes
1answer
312 views

libgdx: Rotate sprite on 3d plane

Im trying to create a game on a 3d plane but with 2d objects. I have a perspective camera and the ground plane drawn. I can't seem to get sprites onto it. I am trying to render the sprites, then to ...
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97 views

Moving objects smoothly, bad perfomance

I just finished developing my mini-game on Android and I got some questions about perfomance and generally "how to": If I have 25+ objects on the creeen (just a polygon with 7-8 angles) its starts to ...
0
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1answer
163 views

Getting the Ray position from View and Projection Matrix

I'm having some trouble calculating the direction and position of the ray from my matrices. I have tried some things such as: private Vec3 getPick(Mat4 projection, Mat4 view) { Mat4 ...
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2answers
76 views

How to get all points within a box?

What is the fastest way to get all of the points within a bounding box? If I had an ArrayList<Point>, and they weren't mapped to coordinates, would I have to loop through every point to see if ...
0
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1answer
183 views

How to clear out a drawn texture from the screen in libGDX

I am trying to clear out the drawn texture from the screen. Lets take a classic game example - in many games when the character goes through the coins the coins clears out from the screen and ...
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1answer
108 views

2D Collision in JavaFX - Bad accuracy with .intersects()

I have several Shape objects - Circle, Rectangle and Polygon. I use the built-in .intersects(Bounds1, Bounds2) method to detect collision but it's quite inaccurate. Circle c1 = new Circle(20); ...
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1answer
113 views

How to use LWJGL Vertex Buffer Objects?

I have been learning how to make a game with LWJGL for a while now by following YouTube tutorials online but I've recently been having a problem understanding Vertex Buffer Objects. I've looked at ...
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0answers
118 views

Box2dLights rendering in bigger scale

So basically my box2dLights are rendering in wreid places. The circle in center is my player and as you can see lamp which should be aligned to player is in the right-top corner. my code: package ...
2
votes
1answer
275 views

3D Camera Rotation

Please, forgive me, but I need help and I've been stuck on this for a few weeks now, I'm making no progress and everywhere I go and I see a different answer, everything I try doesn't work. I've had ...
6
votes
2answers
638 views

Is it possible to implement Steamworks functionality in a Java game? How?

I have a basic game that I want to eventually turn into something better. The game is all Java as of right now, but I want to implement the Steamworks SDK into my game (so it can have achievements, ...
1
vote
0answers
80 views

3D Camera Y-Axis wrong angle

I am trying to build a camera class, though I am running into a problem. When I move the camera above/below, and try to move towards the ground, I am moved off in what seems to be about 45 degrees in ...
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0answers
19 views

Artificial physics : ball angle bouncing (Vector2) [duplicate]

My question is : how can I manage to move my object (ball) on a trajectory , and onContact with another object, it bounces, respecting the angle
2
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2answers
687 views

How to draw a rectangle or curve between two co-ordinates in libGDX

I am new to libGDX.I just want a Rectangle or a small curve drawn between the object and the clicked position .I know libGDX has RECTANGLE class. I just want to draw a rectangle or a curved line to ...
1
vote
1answer
512 views

How to match user click and the sprite object position in libGDX framework

I am using libGDX Java framework for developing a practice game in Eclipse. My game is in landscape mode and I am using sprite image for game assets. Actually I am trying to follow the Kilobolt ...
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0answers
137 views

How do I handle collision involving many characters?

My collision checking works fine. The problem is what to do after two zombies collide so they still walk towards the player but don't go through each other. My current method works fine for two or ...
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1answer
46 views

Concurrent touches not being detected

I have pretty much the same controls on the race example of the engine. A AnalogOnScreenControl and a button defined by a Sprite. The problem is, when I'm using the analog directional, touching the ...
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votes
2answers
60 views

Java Animating using drawImage [closed]

Hi I have a tile based game and I would like to know how to animate the grass image this is what I have so far: public class dirt extends block{ float frame = 0; public dirt(int x,int y){ ...
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1answer
312 views

How do I handle collision response between many different types of game objects?

I am looking for a way to avoid the dreaded switch or if/else scenarios between numerous game object types when a collision takes place in a game. For example: You have a list of game objects which ...