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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How can I simulate a basketball throw in LibGdx box2d?

So I want to simulate a similar throw like in the game Bouncy Basketball. Do i need to create a body and attach another body on it that would be the arm and then how would I apply force/impulse to the ...
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1answer
30 views

Circular Movement

if (Keyboard.isKeyDown(Keyboard.KEY_D)) { if (i < 360) { setX((float) (groundState.getX() + groundState.getRadius() * Math.cos(Clock.delta() * i))); setY((float) ...
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1answer
35 views

What does the TextureRegion.flip() method do?

I'm learning libgdx and don't understand the purpose of parameters passed to flip(boolean x, boolean y). For example, I have code like this: texture = new ...
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2answers
248 views

Accelerometer problems

When I hit an object, my Fighter is supposed to fall to the Ground. BUT, because of the Accelerometer, i can still move it up and down eventhough it died. The Scroller on the x-Axis though stops. ...
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1answer
115 views

How to detect if two sprites are being touched at the same time?

I tried this: if(spr.getBoundingRectangles.contain(x,y)){ //do this } but how to detect if the other sprite is touched by the second pointer? Then I created two Vector3 for the pointer ...
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1answer
16 views

How do I know if the ad is open while the use pressed the back button?

I am trying to reward a user a point whenever they watch/look at an ad. I give the user the reward whenever they watch the ad. However, the user earns a point even if they go to the ad and click back: ...
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2answers
284 views

Mouse coordinate conversion Libgdx

I have a camera: //Map is a my object that wrapper of TiledMap class In the create method: this.renderer=new OrthogonalTiledMapRenderer(this.map.getMap(); this.camera=new OrthographicCamera(); ...
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1answer
124 views

How to map texture to shape in Slick 2D

I need to map texture to shape. Texture: This is a example of shapes I need to map texture to: Notice that each piece in mesh has exactly 4 point to map texture. Logic is pretty straight ...
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3answers
122 views

Accelerated movement in a specific time to a specific point

I am trying to move my sprite in a specific time to a specific position while using frame-independent or time-dependent movement. My sprite is also accelerated every frame to simulate gravity. I know ...
4
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2answers
292 views

Smooth 1D terrain generation

So I'm pretty happy with my terrain, and the progress on my game. I just want to figure out why the terrain is so steep sometimes. Right now to generate my random seed I use this: seed = ...
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1answer
180 views

LibGdx - How can I correctly handle tile transitions / connected textures?

So I am making a tiled game and I need to connect textures correctly based on whats next to it. With tiles that had connection really close to the edge of the tile I could just use the 4 bit meathod ...
3
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1answer
80 views

LibGDX: Is it necessary to set a stage as an input processor when creating a touchpad?

I mean, I've been searching it, they always use set a stage as an input processor after they had added the Touchpadto the Stage because it extends from Actor indireclty(it extends from Widget that ...
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1answer
80 views

Map coordinates to camera coordinates

I have a tiled map which is 3 times higher than camera. When I press on a tile, I want an actor on that tile to show up. This works if camera is not moved. If I move camera a little bit up, so the ...
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4answers
785 views

How to avoid duplication using client-server model

I am using a client-server model to write a multiplayer-capable game (in Java). Currently the clients and the server are using the same code to run the game logic, in order to enable client-side ...
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1answer
356 views

How to use mipmap with TextureAtlas and AssetManager

I searched on the Internet but couldn't find the way to use mipmaps with libGDX TextureAtlas. I want atlas instead of normal textures because as far as I know mipmap supports only 2^n width and height ...
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0answers
52 views

Slick2D fails to load small textures

I'm trying to load a small 32x32 png texture using Slick2D, however it doesn't seem to render correctly. What's odd is that larger textures do load correctly. The 32x32 texture I'm trying to load: ...
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1answer
53 views

Libgdx: more efficient way of using Vector 3?

I currently use if(cam.frustum.pointInFrustum(new Vector3((float)posX, (float)posY, 0))) To check if my sprite is in the camera's view. I have to make a new Vector3 every frame wich is very ...
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1answer
823 views

Multiple enemy array in LibGDX

I am trying to make a multiple enemy array, where every 30 secods a new bullet comes from a random point. And if the bullet is clicked it should disapear and a pop like an explosion should appear. And ...
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1answer
52 views

2D BoundingBox Collision Detection Problem

I implemented collision detection into my game (using Bounding Boxes) The character is floating above the blocks instead of standing on them. I know what is happening, but I can't figure out how to ...
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2answers
161 views

Slick2D: Animation not being parsed from spritesheet correctly

I have a 960x960 spritesheet with each tile being 192x192. I initialized my spritesheet and animation like so: spritesheet = new SpriteSheet("resources/spritesheets/player.png", 192, 192); ...
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2answers
95 views

Scale smaller resolution to full resolution libGDX

Short question about the scaling in libGDX. At the moment i have a application with the resolution 480x320. I define this in the main method of the desktop launcher. My whole application is now ...
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1answer
40 views

Exception in thread “Thread-0” java.lang.IllegalArgumentException: input == null! [closed]

whenever i run my game i get this Error. Exception in thread "Thread-0" java.lang.IllegalArgumentException: input == null! at javax.imageio.ImageIO.read(ImageIO.java:1388) at ...
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1answer
683 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
915 views

Is Java AWT suitable for 2d game rendering?

[Reposting this question from stackoverflow, as it was pointed out that it fits better here.] I'm currently porting my 2D game engine to Java. I looked at some of the game libraries pointed at here ...
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2answers
688 views

Move Box2D body towards mouse click

In a top down game using Box2D, I would like the player's Box2D body to rotate towards the mouse click, and then move to a point on mouse click (move, not teleport). I have worked out the rotation ...
3
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1answer
91 views

Fixing the size?

My app isn't compatible with all screen sizes. When testing on a small size, my textview overlaps with my button. So, as suggested on the Android Documentation, and many stack overflow pages, I ...
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2answers
616 views

Libgdx box2d crashing

im making a game in libgdx which i having a bunch of circle bodies floating around in space and when the player's body crashes into another body, that body deletes and creates two smaller bodies ...
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1answer
35 views

Binding tiles with Rect

I'm having trouble binding tiles with Rect. I've successfully bound other objects (such as the player, trees etc) in my game with rectangles but I'm unable to do the same with the tiles and I don't ...
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1answer
148 views

Correct way to integrate scaled axis angular velocity into a quaternion

Across my travels on the internet I have came across to ways of integrating a scaled axis angular velocity into a quaternion. The first way converts the angular velocity into an axis angle quaternion ...
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0answers
20 views

Ads are loading, but not showing?

TL;DR: My interstitial ads in my game are successfully loading, but when I call .show() on them, they don't show up! I have followed these directions, and the ads load succesfully, but don't show ...
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2answers
51 views

How do I get to ModPE to perform a function the first time a mod is opened?

I am making a Minecraft PE mod and I want to set a variable only on the first launch of the mod. So, how do I make it it set the variable and then not set it again until I import the mod again?
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0answers
38 views

Java multiple player objects/enemy objects?

NOTE: I'm a beginner and learning :D Alright, so in my game I have a class for the player (with the parameters of x, y, color, width, height, and health, same parameters with the enemy). But I have a ...
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3answers
257 views

Gradual rotation of an object in Java

I'm using Java to learn some movement algorithm. I would like to implement the "wandering" algorithm, but in order to do it, i should understand how to rotate an Object gradually. Actually, my Player ...
3
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2answers
153 views

How do I induce collision events in LibGDX 3D?

In the code below I've put an example of something I want to do. I have the camera and I want it to stop moving whenever it hits one of the boxes, how do I do this? public class Main extends ...
3
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5answers
353 views

How can I make this day/night cycle computation repeat?

Here's my code for a day/night cycle. I have it set up so that when time (Statistics.duration) is the right number, the light levels switch. It works great, but I'm at a loss for how to make it work ...
1
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1answer
50 views

Problems managing collision filtering

I have my character fixture and body(is a tank), so when I press the screen it throws a rocket(which also has a body and a fixture) that the player can controlll touching the screen. My game also has ...
2
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2answers
296 views

Laggy empty project at 60FPS

@Override public void create() { batch = new SpriteBatch(); img = new Texture("badlogic.jpg"); } @Override public void render() { Gdx.gl.glClearColor(0, 0, 0, 1); ...
2
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1answer
69 views

How can I fix my audio? (prioritize)

When two audio's are played at the same time... the sound is cancelling out. How do I fix this weird phenomenon? I have some code where there is audio on button click and audio in ten second ...
0
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0answers
43 views

How to fix my issue with movement?

I am making a 2D tile game in Java, and I am having problems with movement, could someone tell me what I am doing wrong please? I am having difficulty in "calling" the function vectorFromKey in main. ...
0
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1answer
200 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 ...
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1answer
80 views

How to replace tiles in Tiled in AndEngine?

in my Game I Create object layers and interpret the shapes in the engine as collision objects...now I want when Player collide with object, after a few seconds object falls...this works properly but ...
-1
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0answers
34 views

How to make character selection in slick2D?

I am trying to make the player able to select between two characters in slick2D, but I cant get the map class to use the variable holding which ever character the player selects. Map Class: package ...
2
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2answers
127 views

Funnel algorithm

I'm implementing the funnel algorithm for pathfinding. After searching many resources I found those : https://skatgame.net/mburo/ps/thesis_demyen_2006.pdf ...
3
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0answers
28 views

Calculate Relative Mouse Movements Regardless of position

Context I'm working on making a variant of the atari game Breakaway IV and I'm trying to improve my mouse input handling. I use the input of a mouse's motion left and right to move the bumper. ...
0
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1answer
987 views

How handle nifty initialization in a Slick2D state based game?

I'm using Slick2D and Nifty GUI. I decided to use a state based approach for my game and since i want to use Nifty GUI, i use the classes NiftyStateBasedGame for the main and ...
0
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0answers
44 views

Alternative Sound lib with LibGDX

i'm making a 2D game for Android in Java using LibGDX. I find LibGDX sound management not good enough for me. I wonder if it's possible to use an external lib for playing and managing the sound and ...
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0answers
59 views

Texturing Cubes

How can I texture a cube that is able to rotate in x,y and z direction in pure Java? Here is what i have tried: package main; import java.awt.Color; import java.awt.Graphics; import ...
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0answers
45 views

JBullet is acting weird, what is causing these 'floating' rigidbodies?

I've been working on a 3D game engine in Java for a school project. The game engine had scenes containing game objects, these game objects contain components defining the behavior of each object. I'm ...
2
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2answers
86 views

Circle to Polygon collision response

I'm working for collision response for my 2d game. Character is represented by circle and obstacles are represented by Polygons(in my example it would be rotated rectangle for simlification). The ...
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1answer
81 views

Why is my deltaTime in my GameLoop 0?

I have a question about my code. I wrote a basic GameLoop for an Android Game and while testing it I realized the deltaTime is always 0. The code looks like this: @Override public void ...