Java is both a popular 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
86 views

X, Y, Z rotation around camera

I'm making a 3d orthogonal-projected, game using painters' algorithm in java. I'm able to rotate the objects with incremental rotations (e.g. rotate all objects 10 degrees) using affine ...
3
votes
4answers
327 views

Inventory implementation in Java RPG

In my game (simple RPG with Java) there will be an abstract class Creature. Critter, Beast, Vampire... will inherit from Creature. But not ALL classes that inherit from Creature will have an ...
0
votes
1answer
89 views

Weird inheritance hierarchy?

In my RPG, all Food objects should be possible weapons. For instance, I want the player to be able to to try kill bunnies with a cherry or a watermelon. The problem is that the easiest way to do this ...
1
vote
1answer
79 views

Save a mouse coorinates after a specific number of seconds

I have a specific method that saves my mouse x and y coordinates. I want that mouse coordinates be saved by specific time (for example after 1000ms). How I need to do that in Java? Please add a simple ...
4
votes
1answer
118 views

Large 2D Arrays Causing Garbage Collection

I've been working on a game in Java that, for this post's sake, looks like Terraria and has random world generation. I've been using Vectors to contain my tile/block objects, but recently due to the ...
1
vote
2answers
229 views

How to achieve a Gaussian Blur effect for shadows in LWJGL/Slick2D?

I am currently trying to implement shadows into my game, and after a lot of searching in the interwebs I came to the conclusion that drawing hard edged shadows to a low resolution pass combined with a ...
0
votes
1answer
99 views

LibGDX - Textures rendering at wrong position

Update 2: Let me further explain my problem since I think that i didn't make it clear enough: The Y-coordinates on the bottom of my screen should be 0. Instead it is the height of my screen. That ...
0
votes
2answers
2k views

How to update libgdx scene2d Label text dynamically?

I display a BitmapFont on the screen, update its text and the font is updated dynamically on the screen as well. I seem to fail to do the same with a scene2d Label added as actor to a Stage. The ...
1
vote
1answer
224 views

How to resize my 2d game to fit the screen?

I am currently making a 2D game using Java (Java 2D). I want to make my game resizable. If you play any game on an emulator (e.g. legend of Zelda in fceux emulator) in full screen mode, you'll see ...
0
votes
4answers
187 views

Is there any way to load pieces of a tile-map as and when needed, and not the entire map at once?

I created a tile-based rpg game in java, but it runs really really slow, the reason is the big tile-map that is stored in the buffer. Is there any way to programmatically load pieces of the map when ...
2
votes
2answers
2k 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 ...
-3
votes
1answer
77 views

What's wrong with my step-toward-target implementation? [duplicate]

I want to move a game object from its current position toward the mouse position. I wrote this Vector2D class to help me: public class Vector2D { private double xVect; private ...
1
vote
1answer
170 views

Random lines away from images in java2d opengl game

Working on a java game that uses some pngs images for icons/textures. A few images ( fewer than 5, out of dozens ) are showing some odd parallel "artifact" lines. They move with the image, are ...
1
vote
2answers
123 views

2D Lighting Glitch

I've been working on a game in Java, and recently I decided to try out my game on a netbook just to see how it would run. While I do get a constant and decent FPS, it appears that my lighting ...
1
vote
3answers
131 views

How to handle network game [closed]

I'm currently building my own game using LIBGdx in JAVA but i'm facing some trouble. My game is base like this : A player have a position and some other parameters that are float, int types. He also ...
0
votes
1answer
155 views

Too much delay while sending object over UDP to server

I'm getting 4 sec delay when sending objects over UDP. Working on small game and trying to implement multiplayer. For now just trying to synchronize movements of 2 balls on the screen. ...
-1
votes
4answers
193 views

How/where to generate RPG world?

I'm programming an RPG in java. It's text based, so movement is more or less from "room" to "room." In the case of cities, they will generally be one room, with some sub rooms for important shops and ...
0
votes
1answer
61 views

Collision bug with gravity in slick2D

I have fixed some of the previous problem. The collision when running into a corner(a wall on two sides) however is still not working. When the player runs into a corner he just falls down and out of ...
2
votes
3answers
2k 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 ...
-2
votes
1answer
210 views

libGDX How to make camera follow the player? [closed]

I'm having some trouble getting the camera to even work at times. Thankfully, its some-what working now. I'm trying to get the camera to follow the players movement but nothing happens. (cut out the ...
2
votes
2answers
627 views

How to load chunks of 2d map segments when player reaches a certain point?

In my 2d platformer (made with Java and Slick2d), random maps are made by combining different segments together and displaying them one after the other. My problem is that I can't load too many ...
1
vote
0answers
40 views

LibgGDX drawing two seperate Textures in FrameBuffer

So I am trying to combine multiple TextureRegions in to one by using a FrameBuffer. This works extremely well when the TextureRegions originate from the same Texture object/file but as soon as I try ...
0
votes
4answers
154 views

How can I optimize performance when updating tiles?

So I'm making a side-scrolling adventure type game in Java. The worlds are procedurally generated, so I can't manually place tiles. Therefore, I every 20 ticks (1/3 second) I update every block's tile ...
0
votes
1answer
273 views

Java 2D World: Convert from mouse screen co-ords to screen co-ordinates?

I have a 2D world background made up of a Grid of graphics, which I display on screen with a viewport (800x600) and it all works. My question is I have the following code to convert the mouse ...
0
votes
0answers
167 views

Java Libgdx - Fire bullets

This is my project structure! I am using Java Libgdx I want to make my Man class shoot the bullets from my bullet class. To make it more clear for example the spaceship game that you shoot ...
0
votes
1answer
212 views

How do I rotate and flip 2D sprites stored in a 1D array of pixels?

I am using a 1D array of pixels for rendering in 2D in java. I am interested in rotation (in radians) and mirroring across the x and y axes. The desired result looks something like this: Public void ...
1
vote
3answers
392 views

Interpolation using a sprite's previous frame and current frame

Overview I'm currently using a method which has been pointed out to me is extrapolation rather than interolation. As a result, I'm also now looking into the possibility of using another method which ...
2
votes
1answer
311 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 ...
0
votes
1answer
110 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 ...
1
vote
1answer
142 views

Collision between player and heightmap

Im programming a small project, an opengl height map. It is build of triangles, which points are fit to the right y position (read out of an image). The player is represanted by a cuboid. (p1, p2, ...
0
votes
1answer
90 views

Fade into splash screen on game load

I'm using Slick2D and LWJGL for my StateBasedGame and I was wondering if there was a way to enter into my splashscreen on application load using a transition? I tried using: this.enterState(SPLASH, ...
0
votes
1answer
98 views

Cant center screen between black bars

As I was trying to adapt my game to different device resolutions I ran into a problem when adjusting the game screen between the "black bars." In my case I am using the FitViewport class from the ...
1
vote
1answer
79 views

Scale around a point

I am trying to create an image editing application for the purpose of generating UV maps in my own format. I am currently working on scaling the image for the purpose of zooming. I can get the image ...
0
votes
0answers
135 views

Libgdx/Box2D PolygonShape has no position… well, what now?

As my prototype works perfectly fine I want to advance to more fun areas of the project and add a more complex player-character body. So for Box2D I figured I'd need multiple fixtures, like one for ...
0
votes
0answers
35 views

LibGDX ShapeRenderer graphical glitches

So drawing something static on the screen with the ShapeRenderer is fine but whenever I try to move something it starts glitching out. Here's a vine to show what I mean: https://vine.co/v/OBxFi1P2IO9 ...
1
vote
1answer
150 views

Tiles touching all of same color check

I'm currently having a problem that has stopped my productivity for quite a while. I need to check if all tiles of a color is touching each other for each color like this: I have all my code for ...
0
votes
1answer
45 views

Jumping distance due to X velocity

I would just like to know if there is a way to work out the distance of a jump depending on how fast the player is going. For example if the player has a velocity X of 10 and he presses the jump ...
2
votes
6answers
2k views

Implementing pausing functionality

I'm working in LWJGL and trying to implement pausing when the user presses the 'P' key. Thus far I have this: boolean gamePaused = false; while(!Display.isCloseRequested()){ ...
0
votes
0answers
49 views

Camera rotation issue Libgdx

I have a OrthographicCamera and I want to rotate 90° it, but when I rotate it seems to be shifted more to the right. Before rotation: http://postimg.org/image/tc9jpq9zr/ After ...
0
votes
0answers
44 views

2D Game with a big block-based Map - Create for each block one block-object? [duplicate]

I'm working on a 2D game in Java which will be similar to Terraria (Mincecraft 2D). I want to generae the world-map random. The world (the ground) consists of 32x32 blocks. How I should handle all ...
0
votes
1answer
122 views

Enemy spawning problem [closed]

I've been trying to get my characters to spawn at random points through out the map. I have a camera which is following my main character (2D RPG Style) around the screen, but I want these "enemies" ...
-1
votes
1answer
84 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 ...
0
votes
1answer
101 views

Coordinates issue vertical scroll Libgdx

I'm going crazy with this problem. I'll explain: I have a camera that falls down (flowing along the y-axis) which displays a TiledMap and declare the whole in this way: In the create method: ...
1
vote
3answers
238 views

What datastructure would you use for a collision-detection in a tilemap?

Currently I save those blocks in my map that could be colliding with the player in a HashMap (Vector2, Block). So the Vector2 represents the coordinates of the blog. Whenever the player moves I then ...
0
votes
1answer
27 views

Timed player collision

I'm trying to make the player loose one heart then cool down for a second after being hit. For an example if(a.overlaps(b)) { p.health--; } would lower the health while being touched. In my old ...
1
vote
0answers
64 views

LibGDX: Why look BitmapFont pixelated on a scene2d.ui.Dialog?

When I use BitmapFonts directly on the stage table, the fonts looks normal (not pixelated). But when I use the same BitmapFont with the same size on a scene2d.ui.Dialog, the font looks pixelated. ...
0
votes
0answers
62 views

Client side latency when using prediction

I've implemented Client-Side prediction into my game, where when input is received by the client, it first sends it to the server and then acts upon it just as the server will, to reduce the ...
1
vote
1answer
171 views

libgdx get rotated sprite coords points

I would like to get the position of each edge of a sprite when he has been rotated. I have no idea how to do it, I made a image to explain it. I would like to get the X and Y position of each Red ...
0
votes
1answer
173 views

Transparent JPanel, Canvas background in JFrame

I wanna make canvas background and add some elements on top of it. For this goal I made JPanel as transparent container with setOpaque(false) and added it as first of JFrame container, then I added ...
2
votes
2answers
945 views

Problem to match font size to the screen resolution in libgdx

I'm having problems to show text on my game at same size on different screens, and I did a simple test. This test consists to show a text fitting at the screen, I want the text has the same size ...