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.

learn more… | top users | synonyms

0
votes
0answers
33 views

2D Voxel Game Chunk Question

I'm currently working on a 2D Voxel game. I started with a big blocks array with all blocks inside it, but it is not very good for performance, so I'm currently switching over to chunks. My question ...
0
votes
0answers
10 views

Java keyListener animating bufferedImages

I am making a game similar to a photo scramble/unscramble game which requires the use of keyListeners. I set up the logic but when I code the animations, they just sit there and do nothing and ...
-1
votes
1answer
36 views

Java Move towards point

Ive made this 'game' where you can fire an aibility (a fire ball for instance) from the player towards the mouse (to the point where the mouse was at the time of casting/fireing/shooting the ball), ...
0
votes
1answer
69 views

How to use Java 8 with Lib GDX in IntelliJ?

I have set the jdk to Java 8 and I have modified all the build.gradle files in my project to have sourceCompatibility = 1.8 instead of 1.6. My problem is that while it does work on Desktop it doesn't ...
0
votes
0answers
48 views

libGDX render 2 tiled maps at different coordinates

I am currently learning libGDX and I want to make a game that loads multiple tiled maps and renders them. This is what I have now: public class PlayScreen implements Screen{ private Main game; ...
0
votes
1answer
29 views

How do I ensure proper date formatting? [closed]

I'm trying to load a date in the form of a string. As there is always 4 possible date formats (x.x.xxxx, x.xx.xxxx, xx.x.xxxx, xx.xx.xxxx (day month year)) I had to take this into account and it is ...
0
votes
0answers
35 views

LibGDX Box2DLights - Global Illumination

I'm using LibGDX + Box2D to create dynamic lights in my game, but I'm currently stuck. I'm trying to light up every game object in the game with its own shadow, kinda like global illumination. Do you ...
0
votes
1answer
81 views

Why is the alpha value of a Sprite in LibGdx 0.99607843 and not 1?

I'm developing a game in LibGDX and one of my problems is related to the alpha value of a Sprite object. If I create a new Sprite sprite object then sprite.getColor().a is equal to 0.99607843 and not ...
4
votes
1answer
82 views

Why Canvas is used more than JPanel for making games in Java?

I saw many ludum dare games, which are written in Java ( using it's standart library ), I checked the code of one or two of them and the thing that I saw is in their Game class, they extends Canvas.So ...
0
votes
1answer
76 views

Good Resources for Random World Generation [closed]

Is there a good reference or tutorials available for adding world generation into a 2D game? I've gotten to the point where I have most of the resources available to add world generation but I don't ...
2
votes
1answer
26 views

Slick2D Networking Crash

This is my first post, so I apologize if it's been put in the wrong place or something. Anyways, here's my problem: I've run into an issue with running my client-side code in one of my game-states. ...
0
votes
1answer
28 views

Drawing from an ArrayList drawing same image repeatedly (Slick2D)

This is the game I'm working on. I isolated the problem into this class. public class Runa extends BasicGame { int startTime, tracker; public ArrayList<Circle> circ = new ...
2
votes
1answer
46 views

Java 2D Game Development - Best Performance With Rendering

I have seen two different rendering methods. One of them is rendering multiple bufferedImages like g.drawImage(image1 to imagexxx, x, y). Like in my game I have to render, on each tick, 880 buffered ...
-2
votes
1answer
67 views

My Java game fills the system memory [closed]

edited. I am writing my first game using LIBGDX. The issue I'm having is that the system memory completely fills up and then even the swap file starts to grow. From what I see, the memory fills pretty ...
-1
votes
1answer
30 views

Reading from txt causes null pointer exception [closed]

I'm reading from this text file called beatSheet.txt. A: 100 A: 101 A: 102 A: 103 A: 104 A: 105 A: 117 A: 120 A: 122 A: 126 A: 128 A: 129 A: 130 A: 131 A: 133 A: 138 ...
0
votes
0answers
37 views

Rhythm game timing not accurate enough (CPU workaround?)

I had an idea that I would 'play' my rhythm game first and have the times at which I hit the key output to the console, so I could use those values minus the hard coded in time it takes an object to ...
-1
votes
1answer
69 views

How would I implement a realistic stock market?

I'm making a corporation simulator, and it contains stocks. In the game you can buy and sell stocks, but I can't implement a realistic change in the price for them. How do I make them change up/down ...
0
votes
1answer
69 views

Raycasting. Corner trap

In my top-down game character moves to target (pathfinding) also avoiding obstacles with Raycasting(Central ray with whiskers), but situation like on picture causes shiver and unneeded turning ...
0
votes
0answers
23 views

Java Rectangle Collision Glitch

I have a platformer type game where I have a level builder(reads a .png file and converts into a level where there are rectangle boxes). I have rectangle collision on the boxes but when I make my ...
3
votes
3answers
176 views

Using two languages in a game engine?

I'm thinking about making a game engine as a learning project. I know Java the best and I figure most of the code is not going to be running that much of the time, (20/80 rule) so why not write most ...
0
votes
0answers
35 views

Problem with Collision Detection

So I am adding collision detection into my game but whenever I start the game I get a rendering crash saying that there is a 'Game.update() failure - check the game code.' I have repeatedly tried to ...
-2
votes
1answer
33 views

how to set in vector float x y coordinates [closed]

i am use eclipse java android i am try to projectile trajectory in my game like angry birds example here ...
0
votes
0answers
19 views

How to pass a java string variable from android activity to unity3d C# script variable?

Require some help to pass custom autogenerated text from android activity to unity3d activity being started.
0
votes
1answer
47 views

My game has messed up layouts!

Earlier, I asked this question: Landscape mode for game? Where I had a directory for each and every layout, but the layout in the layout-land directory wasn't showing up when positioning my layout in ...
1
vote
1answer
24 views

Error When Loading a .tmx TILED map through the TiledMap class

So I made a map using the TILED application and I have it as a .tmx for reasons, but whenever I use the TildMap class in the Slick2D library to render the map on the screen, it gives me an error. Here ...
6
votes
1answer
116 views

Minimum number of moves algorithm in Java

I'm looking to implement the minimum number of moves algorithm for the java game I'm developing but I can't quite figure it out. Here's an example picture: There are also some specifications ...
0
votes
1answer
72 views

Is It Better To Generate A Pre-Generated Map or A Randomly Generated Map When Using Tile Properties? [closed]

So I am contemplating whether or not to add a Pre-Generated Map or a randomly generated map into my game. But I also need to add Tile properties into the map (i.e. so that water tiles aren't being ...
2
votes
1answer
38 views

Use an int as a reference to a specific class

So I'm trying to make an efficient game where there is a grid system and every grid has a number that is able to identify what kind of block is located there. This lets me just have an array of ...
0
votes
1answer
40 views

Positioning partials of character sprite animations

I'm not entirely sure how to best explain what I'm doing. Maybe I'm going about this completely the wrong way. If any of you find that that is in fact the case, I would appreciate it if you told me ...
4
votes
1answer
96 views

How do I do selective water surface rendering?

I have a shader that renders the "texture" of a very realistic water on a tile in the 3D world using a Frame Buffer. The problem is that, for example, I only want to render the part that isn't below ...
0
votes
0answers
47 views

Landscape mode for game?

TL;DR: I have made 8 new layouts for each activity layout, but they are not showing up. For example, I have a layout-land directory with a layout, but that layout doesn't show up when I turn my phone ...
1
vote
2answers
116 views

How to make a “Camera” in Java

I need some help with getting my camera to work in java for a game that I am making. The problem is is that I've never made a camera in a game before and this is my first time trying to make one in a ...
0
votes
1answer
28 views

FollowPath steering behavior

I'm having a problem with AI movement in my top-down game. AI builds path and than moves using libgdx FollowPath (this problem is still actual) steering behavior. I have some solutions, but can't ...
-1
votes
1answer
37 views

LibGDX - Map Boundaries

Synopsis Well, I'm making a little top-down JRPG and today I was like 'Yeah, I'm gonna bust out this whole map collision thing!'. I failed. Problem So I went on the internet and looked up 'LibGDX ...
0
votes
1answer
49 views

Java - LWJGL OBJ Loader with Materials not rendering

So I successfully loading my obj file but I obviously want to get materials on it. I added the vt(texture) to the OBJLoader and the Model.render but still rendering textureless. I have exported the ...
0
votes
0answers
22 views

Libgdx Box2D - Object not showing up

I am trying to put a sprite into my b2d-world. But for some reason, it is not showing up. I've already checked the camera settings, they are defenetly correct. Then I came to the point to check the ...
3
votes
1answer
87 views

Resolving collisions with float precision errors

I'm facing a problem when I try to resolve the collision between two units using floats as positions of the units in my game. I am detecting the collisions using the SweptAABB algorithm and if there ...
2
votes
2answers
35 views

How can I automatically fit elements in libGDX layouts?

Recently I wanted to use libGDX's Table to show four buttons. But my table doesn't fit on the stage: Here is the code I used: table.add(new GameButton("1")); table.add(new GameButton("2")); ...
0
votes
0answers
9 views

What is vector<E> how to use in android java [duplicate]

I making game i want use vector into velocity,position and rotation. But i don't know how to wark vector so please help. Thank you
3
votes
1answer
79 views

VBO rendering crashed with glDrawArrays

I'm playing around in LWJGL3 and I'm experiencing an issue regarding glDrawArrays. At glDrawArrays the JVM crashes. I'm using modern OpenGL and therefore I have my own shaders and matrix ...
2
votes
0answers
43 views

Fixed timestep periodical “lags”

I have fixed timestep code in my main thread, it looks like this: float oldTimeSinceStart = 0; float accumulatedTime = 0; float maxDeltaTime = 0.1f; // 10 FPS float fixedTime = 0.016f; // 60 FPS ...
1
vote
1answer
55 views

Java Reversi/Othello - Checking if Valid move

I've written a gameBoard class for a Reversi/Othello which is the following: import java.io.Serializable; public class GameBoard implements Serializable { private static final long ...
2
votes
1answer
31 views

Call function via ContactListener

I've been creating a game on my own in LIBGDX, BOX2D and there' s a problem I can' t solve. When two World bodies collide, method "beginContact" is called in MyContactListener class that implements ...
0
votes
0answers
32 views

Rendering BOX2D shapes with LIBGDX

I have been creating a game on my own and I need a little help to begin with graphics. I haven' t found much in the internet about this topic, so I came here. Right now I've got a chainshape that i'm ...
0
votes
0answers
54 views

Marching Square Generated 2d Terrain: Dealing with more than 2 tile types

I need some help with my random map generator. First, I use a noise generator (something like Perlin noise) to create my tile array. For now i'm using three tiles: water (0), beach (1), and grass ...
3
votes
0answers
37 views

When I add in Java transformationMatrix I can't see images? [closed]

When I add in Java transformationMatrix I can't see images moving but when I remove it I can see why and how to fix it? Any ideas how to fix it? My Renderer class: public class Renderer { ...
1
vote
1answer
38 views

Minecraft Forge 1.8 referencing mod problem

I'm trying to make a Minecraft Forge mod. I've done this before, but I've never worked with entities. So I was trying to add an entity to the EntityRegistry, but I can't seem to reference the mod file ...
0
votes
0answers
24 views

Creating tunnel of points in LIBGDX

I have been wandering in the Internet lately to find the best possible solution for creating a 2d tunnel/cave in my game in LIBGDX. My game in short: One player can control a shape in tunnel, the ...
0
votes
0answers
14 views

LibGDX: drag and drop in a vertical group

I need to mode with a drag and drop a cell/row in a vertical group and change its position, before or after another cell/row. Is there something that can help me to implement this? Thankyou
-5
votes
3answers
178 views

Making game totally from scratch [closed]

I'm used to make my games in Java. Java is an awesome language but to launch .jar files you need a good updated JRE. So I thought: "I'm just going to make my games in C# or C++!" Unfortunely, I can't ...