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Unanswered Questions

896 questions with no upvoted or accepted answers
9 votes
1 answer
1k views

Using PhysX, how can I predict where I will need to generate procedural terrain collision shapes?

In this situation, I have terrain height values I generate procedurally. For rendering, I use the camera's position to generate an appropriate sized height map. For collision, however, I need to have ...
7 votes
0 answers
844 views

How to correctly implement 'layered lighting' with Box2D-Lights

How does one only allow Box2D-Lights to affect one and only one OrthographicCamera. After researching, I found the following answer. This answer goes into detail ...
7 votes
1 answer
4k views

Drawing fonts with LWJGL3 with OpenGL

I'm very sorry if this question has already been answered, but since I've been struggling with this for many days I thought I'd give it a shot here. My goal is to somehow render some text on the ...
6 votes
0 answers
325 views

LibGDX Rectangle not Scaling to ImageButton Instance as Expected

below is the class I wrote for a GameButtoninstance: ...
6 votes
1 answer
740 views

Spawning enemies in four different positions with a fixed trajectory in android game

This is my first android game, I appreciate all the help. I want to define 4 spawning zones starting from out of the screen (left, right, up and down). Enemies coming from this areas have a fixed ...
6 votes
0 answers
161 views

balloon ligher than air with libgdx, impementation of FixtureDef.density, gravityScale, linearDamping?

I use libGdx/box2d's physic. My intention is to create a balloon filled with helium (a body, what hovers above a surface, if we apply a little force to it - it moves fast but not far, if we push ...
6 votes
0 answers
195 views

Why is my 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 ...
6 votes
0 answers
213 views

How can I create a set of collision points for an arbitrary mesh?

In my project I am working on automatically deforming an arbitrary mesh with respect to another arbitrary mesh, within the context of user generated content, similar to this deformer being developed ...
5 votes
0 answers
257 views

Implementing rubber rope

I'm using LibGDX to implement rubber rope in which player can fly and launch. I know I could use Box2D as physics engine and I'm going to one day, but I'd like to learn it myself for now. I've ...
5 votes
1 answer
2k 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 ...
5 votes
1 answer
230 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 ...
5 votes
1 answer
184 views

How can I determine "exact moment" of collision with ray casting?

I'm currently brainstorming how the physics for my game engine is going to be handled. It's top down and I'm thinking of using ray casting for collision detection. I've reached two potential problems (...
4 votes
0 answers
173 views

Support function of Minkowski Difference

I am watching this and if you stop at 7:25, you will find an implementation of the support function. The goal of the function is to give you the farthest point in a given direction. My question is how ...
4 votes
0 answers
314 views

Determine user mouse selection of 3D Object for multiple viewports

I am currently working on setting up some world objects for my level editor and am running into a bit of a snag. When I get the hit location from the mouse raycast, I would like to determine what part ...
4 votes
0 answers
181 views

Understanding unknown mesh data structure

I have a large number of old mesh files in a custom, undocumented binary format. I have managed to parse almost everything but am left with one group of structures, described below, that I don't ...

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