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.

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Game lags when my player collides with a specific object (solution known, unsure how to implement)

I'm developing a game in Android using LibGDX (although this is more of a JAVA problem than an engine problem). My aim is to have my player bounce off one spring onto another that will eventually take ...
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0answers
24 views

Game state: getting it to work help! [on hold]

I've started using enum in java but I ran into issues getting it to work, how would i be able to make it start of with a Intro going into a main menu (with mainmenu backround and buttons) and you can ...
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2answers
111 views

What makes Minecraft so CPU intensive, and what could be done to improve it? [on hold]

Recently I've been searching for VPSes that allow Minecraft servers to be hosted, and surprisingly very few do. Most allow for games - but Minecraft in specific is disallowed by many. Now it's fairly ...
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1answer
55 views

Java OpenGL Perspective matrix not working

I'm trying to render a simple triangle with OpenGL in Java using LWJGL3. Everything is working great, but the projection matrix (perspective) is not working. In C++ I just used to apply the ...
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1answer
25 views

Drawing text with Slick

I've been trying to draw a text to the display using Slick. However, when ever I draw the TrueTypeFont to the screen, it draws it reversed upside down and also, it makes the whole display turn black. ...
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0answers
15 views

Info about java applet (validity and performance) for develop a game [on hold]

I program in C++ and Java, and i know the basic structure on how java applet works (i've made one for educational purpose, only awt btw). As hobby i want to try to develop a game, but i don't know ...
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0answers
34 views

opengl camera scrolling too fast

Im using the code from this tutorial but in java and lwjgl http://lazyfoo.net/tutorials/OpenGL/04_scrolling_and_the_matrix_stack/index.php . The problem is i want the player to click and drag around ...
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1answer
160 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 ...
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1answer
136 views

Creating a separate renderer for entities in a 2D game

I'm making a 2D shooter game. As of now, every entity "draws itself", meaning every renderable entity has a draw function. I know it is better if rendering is handled separately, but how can I achieve ...
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0answers
73 views

Libgdx: ModelInstance texture is not rendered on Java8

I have project based on opengl, libgdx framework. It's impossible I think, but when I switch my project from Jdk1.7 on Jdk1.8 I have problem with rendering model's texture. I have no idea how language ...
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1answer
32 views

How to implement a GUI in a JPanel

I have a game that I am programming in Java from scratch for fun. And I have run into the problem where I want an Inventory system to pop up when you press the 'I' button or something (i know how to ...
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0answers
12 views

How to Move Image Based on Rotation Java Slick2D?

I am trying to rotate image based on rotation. I am unable to do so. Here is my code Vector2f direction = new Vector2f((float)Math.cos(Math.abs(imgIcon.getRotation()) - anglecorrection), ...
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2answers
900 views

How do I make a pop-up window with Scene2D?

I have a main-menu screen with a logo and a bunch of buttons. When the Login-button is pressed, I pop up a dialogue asking for a username and password. This works fine, other than the "popping up". ...
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0answers
15 views

render map with objects in slick2d [closed]

I have a problem when rendering a map with a layer of objects in slick2d. I have a map with two layers of patterns that render in slick2D Tiled, but once you add a layer of objects, the map fails to ...
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0answers
6 views

Eclipse import Gradle project download takes forever [closed]

I tried to generate a project with libGDX and then import it into Eclipse but it takes more than 5 hours on downloading dependencies, however, it works fine from the command line but not Eclipse or ...
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2answers
259 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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0answers
14 views

Libgdx Music error QCMediaPlayer mediaplayer NOT present

Problem solved with music = Gdx.audio.newMusic(Gdx.files.internal("song.mp3")); I am looking for music implementation in my app with LibGDX. I saw the guide provided in LibGDX documentation but it ...
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2answers
963 views

libgdx actors and instant actions

I'm having trouble with actors and actions. I have a list of actors, they all have either no action, or 1 sequence action This sequence action has either : a couple of actions (some are instant, ...
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0answers
30 views

Detect which direction an object collides with another

so I am trying to implement a collision detection system. I'm only using rectangles, so it's not too complicated. My collision detection currently does detect if the 'player' object intersects the ...
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2answers
46 views

Load a simple text file through asset manager in libgdx

It's easy to load a simple text file from the internal: Gdx.files.internal("data/colors.txt"); But I currently use an AssetManager to load assets that are defined in an array of ...
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votes
1answer
257 views

Android Game-Loop (rendering & logic removed, but still 'skipping frames')

Overview Guys really hopeing for some help here. My game loop is based on code from Fix Your Timestep!. I've read the article more than a few times, but I can't quite work out what exactly is ...
2
votes
1answer
751 views

libGDX using Stage and Actor produces different camera angles on desktop and Android Phone

libGDX using Stage and Actor produces different camera angles on desktop and Android Phone. Here are pictures demonstrating the problem: http://brandonyuh.minus.com/mFpdTSgN17VUq On the desktop ...
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0answers
70 views

Sprites not being rendered on screen change - Android Libgdx

In my game over screen for my Libgdx Android game I've the following code which starts a new game upon a screen touch. if(Gdx.input.isTouched()) { ScreenManager.setScreen(new ...
2
votes
1answer
38 views

Endless Running Game - Changing Lane Function in JAVA

I am developing a kind of vertical endless running game, where the character has 4 possible lanes to be in. I am using libGDX and want the character to change lanes by adding a horizontal velocity to ...
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1answer
186 views

Multiplying by delta not giving smooth movement

I started working on my first proper game but reached a problem straight away. In short I have a game that runs most of the time at 60 fps. ( I am using Libgdx a popular Java framework) but my game ...
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2answers
46 views

Tilesets - how to make the pink color appear transparent

recently I searched for some free to use Tilesets on the internet. And wherever I found a sheet of sprites there is this pink color in the background. i know that all the spots having that color ...
0
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1answer
50 views

BitmapFont - where is getBounds method in new 1.6 libGDX

I download newest libgdx version 1.6 and i cant solve problem with center my BitmapFont text. Earlier in version 1.54 i used getBounds() method to find out width of text. Share your solutions, thanks ...
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2answers
92 views

OpenGL Vertex Array Object(VAO)

I have drawn a triangle and a square using open gl and everything was fine. I have then tried to draw the same triangle and square, while implementing VAO's and now I only get a white triangle - ...
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1answer
57 views

Life Counter in Greenfoot caught “Incompatible Types” exception

I need to make a life counter so that when my Actor get hit by an Enemy, his life will be decreased by 1. I put this method in my Actor class: private void decreaseLife() { Actor enemy = ...
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2answers
193 views

get View from LibGDX for Android

I am making a LibGDX app, and I need to get the view to put to an Android app. Here is the code to get the view: package jangkoo.game.shadowfiend.android; import ...
1
vote
1answer
55 views

Java - Load new classes from a folder automatically at startup

I want to make my game-coding very flexible; so I wanted to make the game automatically load new Mobs from a folder named "mobs". This must be only at startup; not while it's already running. I just ...
1
vote
1answer
215 views

Structure gameobjects and call events

I'm working on a 2D tile based game in which the player interacts with other game objects (chests, AI, Doors, Houses etc...). The entire map will be stored in a file which I can read. When loading the ...
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0answers
24 views

libGDX: Linking 3D scene from 2D screen

Using libGDX I have created a few 2D screens, such as a splash screen and a main menu, and also created a 3D scene which I want to be able to load when clicking a button on the main menu. I know how ...
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1answer
313 views

LibGDX Bounding Rectangles

I'm creating some rectangles surrounding my sprites for my player and bullet class to detect collisions with the overlaps method in Intersector class of LibGDX. I have a question: When I instantiate ...
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0answers
15 views

Login handler for server logic in Poker

I am developing the server side of a multiplayers Poker game. My server has zone/room architecture. If users want to enter a zone, they have to submit login information to server. After receiving that ...
2
votes
1answer
752 views

How to implement the server-side game loop?

The server needs to handle the physics, because all the movement will be handled by it. So for that I need a game loop. The thing is that the server doesn't have the render part, it's just a console. ...
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1answer
38 views

Entitiy spawn on Button press

I'm trying to create a little 2D-Zombie-Shoot game. I'm pretty much at the beginning of programming. At least, I can create a player that is moving with arrow keys and stuff. My question is: How do I ...
1
vote
1answer
1k 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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votes
1answer
44 views

Rotate heading relative to agent's local space

I'm having a little trouble translating a point in my game's world space to an object's local space. I have a cannon in my game with a normalized heading vector that's always supposed to point in the ...
3
votes
1answer
1k views

Libgdx - IsometricTiledMapRenderer and light shading

I am wondering if there is any way to simulate light shading in Libgdx using an IsometricTiledMapRenderer. Here is my code to draw an isometric map, it's able to be moved around with the mouse and ...
2
votes
2answers
118 views

Why do my Box2D bodies occasionally get stuck and separate forcibly?

I'm making a space game with LibGDX and Box2D. I made a video here to illustrate the issue. Verbal description: When objects collide, they sometimes get stuck together and are then suddenly separated ...
0
votes
1answer
99 views

LibGDX - Executing 2 different touchDown events in the same method

On the bottom left of my screen is a circle with an Arrow and on the bottom right is a circle with a gun. If the player is in jetpack mode and the Arrow "button" is clicked he flies like flappy bird ...
0
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1answer
106 views

How can I make an soundsystem with slick?

My Question would be , how can I develop an easy-to-use Soundsystem under slick-util? Under the function a.playAsSoundEffect(1, 1, true, x, y, z); it allready works to create a static ...
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2answers
45 views

Ball oblique impact physic in Java?

I know Q3 + Q4 = 90 I searched internet and many physic topics, but not found how to calculate this values in Java? (I found V3 and V4 but not found Q3 and Q4) So how can i calculate V3, V4, ...
0
votes
1answer
80 views

box2d ChainShape into curved line

i need to draw a curved line , i searched the internet and found nothing , maybe someone with knowlegde on the subject can help me with a link , i used chain shape and did this , and i don't know ...
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0answers
11 views

LibGDX and Sound Priorities

According to a post I found, the setPriority of a Sound in LibGDX is not only a hint, but does nothing on desktop, and I can confirm this. I really need priorities for sounds in my desktop game. The ...
1
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1answer
67 views

In JBox2d when dragging a Body, why is the direction is flipped vertically?

Why is it when I drag a JBox2d Body with the mouse, the vertical component is flipped? e.g. If I drag down-right, the Body moves up-right. Is this expected behaviour, a bug in JBox2D, a Mac ...
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1answer
35 views

How to read a custom map format [closed]

I am trying to create a custom map format for my own little 2D RPG, so my question is rather how do I manage reading and creating a custom map format properly and flexible. First off, I am writing my ...
1
vote
1answer
297 views

Design pattern for animation sequence in LibGDX

What design pattern to use for sequence of animation that involve different actor in libGDX. For example I am making a game to choose a wolf from a group of sheeps. The first animation played when the ...
0
votes
1answer
308 views

problem adding bumpmap to textured gluSphere in JOGL

I currently have one texture on a gluSphere that represents the Earth being displayed perfectly, but having trouble figuring out how to implement a bumpmap as well. The bumpmap resides in ...