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2
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2answers
884 views

libgdx, how to check collision of randomly generated actors?

I have two groups of randomly generated actors, one is bullets second is enemies. And as of now I have no idea how to check collision of randomly genrated actors and remove the overlaped actors. I'm ...
0
votes
1answer
266 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 ...
0
votes
2answers
246 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 ...
0
votes
0answers
16 views

Minecraft Modding - How do I use OpenGL stencil functions alongside the game's GlStateManager?

Note: I am using Minecraft Coder Pack 9.10 for game version 1.8.0 (official release). I am trying to make a multiline text field similar to the game's original net.minecraft.client.gui.GuiTextField. ...
1
vote
1answer
54 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 ...
0
votes
1answer
104 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 ...
-4
votes
0answers
20 views

2D Java drawing library? [on hold]

I was originally making a 2D game in c++ but I have been having way too many issues so I decided I want to move the game to Java instead. I'm going to have to rewrite a lot of code, but what I am ...
0
votes
2answers
87 views

Swing GUI for games (performance)

I'm developing a game in Slick2D and I'm trying to make GUI. I've already tried TWL library, but it seems to me a bit complicated and it doesn't cover what I need. In my own implementation of GUI ...
0
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0answers
17 views

Scene2d place tables outside stage view

I am trying to create a nice sliding transition between my tables (like in Words with friends), one where I have the main game UI one where I have a freinds list one where I have settings etc I ...
0
votes
2answers
98 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 ...
0
votes
1answer
245 views

Grid collision - finding the location of an entity in each box

I am trying to implement grid-based collision in a 2d game with moving circles. The canvas is 400x400 pixels. Below you can see the code for my Grid class. What I want it to do is check inside which ...
2
votes
1answer
93 views

Creating a Melee Weapon in Box2D (libGDX)

I am struggling with how to implement a melee weapon that can swing when a key is pressed. I am imagining two different attacks (stab and swing) I have tried creating two fixtures (character + ...
0
votes
2answers
39 views

LibGDX Game vs ApplicationAdapter

When I create a new LibGDX project the main class of Core project extends ApplicationAdapter. Here is how it looks like. package com.marimba.apptest; import com.badlogic.gdx.ApplicationAdapter; ...
0
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0answers
34 views

LibGDX with Parallax Camera, unable to accurately select objects

So, basically I borrowed the ParallaxCamera test that LibGDX provides and got the camera set up rather nicely. However, I noticed that when I specify a speed other than 1, my game objects shifted ...
0
votes
0answers
14 views

LibGdx scaling properly

I've mad use of view ports and they do what they say they do, but the problem is I'm not able to get it to scale the whole world with it. The game is for android which it looks nice on but desktop is ...
1
vote
1answer
41 views

Libgdx - How to change GestureListener pan finger sensibility?

I implemented GestureListener in my Overlap2dStage to pan the camera when the player drags its finger over the screen. But I also have some actors that extend InputAdapter to detect when the user ...
0
votes
2answers
48 views

Libgdx - How to rotate a single ShapeRenderer object

So, looked at a couple of questions similar to this, led me straight into dead ends. I have an object drawn out in ShapeRenderer, and I wish to rotate only that one object. I have tried ...
0
votes
2answers
63 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
2answers
155 views

Java libgdx Game Screens and rendering tile map [closed]

I'm working on a 2D tiled game with Java and libGDX. I'm having problems implementing gamescreens. I'm trying to set the screen to gameScreen and start rendering tiles, but I'm getting a nullpointer ...
2
votes
0answers
50 views

OpenGL enabled Java game not detected by Fraps

Recently I found out that I could enable OpenGL hardware acceleration in my java game with the line System.setProperty("sun.java2d.opengl", "True"); Initial tests showed a big boost in performance. ...
1
vote
0answers
76 views

2D Parallax Scrolling

I'm trying to implement parallax scrolling and have a partially working equation (from a book I've read) but it doesn't fully align to the screen. I also want to stick purely to integer maths. I've ...
-1
votes
2answers
63 views

How to teach my child game programming? [on hold]

I want to teach my child programming. He wants to make a game in which he can shoot zombies. This effort will take a lot of time and I would like advice on what direction I should take (what ...
0
votes
0answers
31 views

LWJGL - First time trying to implement shadow mapping

It's my first time when I implementing shadow mapping. My problem is shadows don't work in any way. First I just render all of the object to a FBO with simple shader. shadowMapGenerator.vs: #version ...
0
votes
2answers
68 views

A* Implementation Produces zig-zag in positive directions

I have an implementation of A* in Java. I followed this guide http://www.policyalmanac.org/games/aStarTutorial.htm. But I noticed that the paths generated where the goal is in the positive X and Y ...
1
vote
1answer
61 views

Understanding HingeConstraint in jBullet

I'm using the java port of BulletPhysics engine jBullet. I'd like to make a joints between 2 triangles so that one edge of the first and one edge of the seconds act like a hinge. But I don't ...
0
votes
3answers
211 views

Where the physics should be put

I'm studying a book of artificial intelligence applied to games. It shows several algorithms for each argument (movements, path finding.. ecc). Unfortunately (but obviously) it does not explains how ...
0
votes
1answer
893 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
votes
1answer
59 views

How to make “Events”/ Scripted Scenes

I want to make cutscenes etc, in my game. I thought of a similar System like in the RPG Maker: If you enter a certain Area, a list of commands and arguments is played. E.g. like this: [Move ...
0
votes
1answer
398 views

libgdx ActorGestureListener.pan() parameters not moving actor in smooth line

I override the pan method in ActorGestureListener to implement dragging actors in libgdx (scene2d). When I move individual pieces on a board they move smoothly, but when moving the whole board, the ...
0
votes
1answer
73 views

Libgdx understanding screen size

I'm trying to create my own jumper type game where the player moves up through an infinite y value. The problem I am having is getting the screen size to match up with the android screen. viewport ...
0
votes
2answers
179 views

How should I access frame buttons from a controller in an MVC approach?

I'm developing an italian card game using the mvc pattern. I have the class GameFrame that contains the view. The user's card are buttons (JButton objects). I have 3 controllers: GameController: to ...
0
votes
0answers
32 views

Java GUI Development: Learn Using IDE or Pen and Paper? [closed]

I am currently working on a game in Java. It has many of the basic features and is playable, but it does not have any graphics (you play it in the command prompt). I want to learn GUI programming ...
-1
votes
1answer
38 views

Drag and drop game for android

I'm trying to make some alert for my drag and drop game which I want to insert the sound when user drag the right answer in the space provided. How can I code my Java in Eclipse? Someone please help ...
-2
votes
1answer
22 views

single Key press

I have my following (static) KeyListener http://pastebin.com/gR1i3Xzb and this is my update Method: @Override public void update() { input(); /*...*/ } private void input() { ...
1
vote
1answer
36 views

Certain random content rendering differently

On the main menu of my game there is (obviously) several buttons. 2 of which, in different positions on different screens, render a different colour to the rest. As you can see below, "New game" ...
1
vote
0answers
44 views

Blinn-Phong lighting on Voxel models

I'm creating a game that is going to use voxel models. However I got stuck when I coded my shader using Blinn-Phong algoritm. Here is how it look (Only care about the red model): As you can see ...
4
votes
1answer
157 views

LibGDX input y-axis flipped

I'm writing a game in Java for Android using LibGDX, and I connected my phone so I can test it on it. I know that LibGDX's render system works different than regular Java systems since the 0,0 ...
0
votes
2answers
445 views

Wall jumping collision detection anomaly

I'm creating a game where the player ascends a tower by wall jumping his way to the top. When the player has collided with the right wall they can only jump left and vice versa. Here is my current ...
2
votes
1answer
28 views

How can I repeat a Texture Region in libGDX

I have a texture that is part of a sprite sheet. I want draw the texture to cover a certain length, but I want it to repeat not stretch. However,when I use the following code batch.draw(hillBottom, ...
0
votes
0answers
17 views

Filling the viewport area of a orthographic camera with an image (libgdx)

So im trying to get the whole area of the viewport and then use the coordinates to draw images in the camera's viewport. So if the camera moves I can fill it with one image the length and the width of ...
1
vote
1answer
138 views

How do I make my main character move towards an object? LibGDX/Java

What I want to happen is for my player to bounce from spring to another. For example take the illustration below: Here's my code (what I've tried to do so far). This gets called in an ...
0
votes
1answer
94 views

What is the correct approach to implement multiplayer in a game? [duplicate]

I'm developing a game and it is intended to be a multiplayer game. I have experience in writing servers and clients in Java, but the game is written in C++. The server will be written in Java for ...
0
votes
2answers
281 views

Basic 2d platform collision detection algorithm has a slight bug (Java)

I'm trying to implement collision detection between Player (the main character) and a Platform. They are both modelled as rectangles; when player hits the side of a platform he should bounce off it ...
1
vote
2answers
822 views

Matrix rotation wrong orientation LibGDX

I'm having a problem with matrix rotation in libgdx. I rotate it using the method matrix.rotate(Vector3 axis, float angle) but the rotation happens in the model orientation and I need it happens in ...
0
votes
2answers
100 views

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 ...
0
votes
0answers
26 views

Issue with texture mapping on a spehre using opgengl es 2.0

I have a problem to calculate the right UV coordinates. I'm calculating the sphere by subdivate a ocathdron. What did I do wrong? Calculate UV Points for the texture: private ...
1
vote
1answer
46 views

Best way to deal with Collision in JavaFX

This question I'ts no exactly a fix for the current game I'm working on, but I am showing it as an example to explain my problem. I just want to know the best way to handle collision in JavaFX. My ...
0
votes
1answer
27 views

Move a box2d body towards mouse [closed]

I'm using LibGdx's Box2D in Java. I'm trying to apply a force to the body that would send it towards the mouse. The problem is, I'm having trouble figuring out a way to send it directly to the mouse ...
1
vote
1answer
56 views

Using world coordinates instead of pixels

I've been told that having a set pixels-per-world unit number is bad practice because it will not look the same at different resolutions. Because of this, I am trying to learn about using abstract ...
0
votes
1answer
66 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 ...