Tagged Questions

0
votes
1answer
103 views

Libgdx import bin/xml/json from physics editor

I'm using Libgdx. I did a simple json file in Physics Body Editor and I don't have any idea how could I import it into my physic world in libgdx. Any idea will be appreciated. P.S: Sorry if there ...
3
votes
3answers
180 views

Libgdx body passing through block then fall on it

I'm using libgdx and its physic engine Box2d. My question is : how could I make my box2d body go through a block , ignore the first collison than make the block active so the ball can fall onto it. A ...
4
votes
1answer
319 views

Mario like jumping and landing in box2d, help

I've been trying to get Mario type jumping/landing in a Box2d game and it's been giving me some trouble. Results: Player loses velocity on landing Desired Results: When player lands it will continue ...
5
votes
4answers
369 views

Making a Box2D ball bounce to constant height

I want to create a game like Doodle Jump. I'm using libgdx and Box2d. I needadvice on how to make my ball bounce constantly and with the same height. I've tried setting the ball's body restitution ...
1
vote
2answers
134 views

What to use as a Box2D renderer in a release version?

I'm creating a game with libgdx. For testing physics I use a Box2DDebugRenderer, which is not fast. When I want to release my full game, what should I use as a renderer?
0
votes
1answer
159 views

Ligdx Box2d : convert box2d coordinates into screen coordinates

I'm new in libgdx and i have a little problem. I created a body in box2d and i want to assign it a sprite; for that i need to get the position of the body,then insert into the main loop the updated ...
3
votes
1answer
453 views

Getting Bodies to go “Super Fast” in Box2D

I am making a breakout game in Android using the LibGDX version of Box2D. I have a ball that I am applying a force to with the following code... getBody().applyForceToCenter(-10000000000.0f, ...
0
votes
0answers
169 views

LibGDX Touch Box2D Body

I am using LibGDX, however, instead of using the stage, actors, etc, I wanted to use straight Box2D that way I could port it easily (to iPhone) later. I have the character moving with the ...
2
votes
2answers
294 views

How do I get the touch event on a body in Box2d(Java)

I have various bodies rotated at some angle with the help of Box2d in libGDX. What I want is to destroy the body when I click on it, but the problem is that I am not able to get the area definition of ...
2
votes
0answers
189 views

Error in destroying object in Box2D/LibGDX

I'm trying to delete an object when a collision happens. I have put the following code in the render method of the object so it would be outside of the physics calculations. public void ...
1
vote
2answers
306 views

strange behavior in Box2D+LibGDX when applying impulse

I have been playing around with Box2D and LibGDX and have been using a sample code from DecisionTreeGames as the testing ground. Now I have a screen with four walls and a rectangle shape, lets call it ...
1
vote
5answers
4k views

What is the proper way to remove a box2d body from the world in libgdx?

I'm wondering how to remove the body from the world, because I found an error when I tried. I found following error. java: ...
0
votes
0answers
2k views

LibGDX Box2D Body and Sprite AND DebugRenderer out of sync

I am having a couple issues with Box2D bodies. I have a GameObject holding a Sprite and Body. I use a ShapeRenderer to draw an outline of the Body's and Sprite's bounding boxes. I also added a ...
5
votes
1answer
1k views

Box2D Difference Between WorldCenter and Position

So this problem has been brothering for a couple of days now. First off, what is the difference between say Body.getWorldCenter() and Body.getPosition(). I heard that WorldCenter might have to do ...
1
vote
5answers
535 views

Errors happen when using World.destroyBody( Body body )

on Android application using libgdx, when I use World.destroyBody( Body body ) method, once in a while the application suddenly shuts down. Is there some setting I need to do with body collision or ...
0
votes
1answer
1k views

Creating lots of sprites dynamically in libgdx

I´m creating Groups that contains Sprites and adding bodies with box2D, but when I create many of this my animation gets very slow. How can I handle it?
1
vote
1answer
482 views

Scaling bodies in box2d and libgdx

Is there a way to scale the bodies made from vertexes (like a guitar), i was trying to multiply each vertex point by the scale value but c++ mark an assertion failed, is there a mehtod to do this? I ...
0
votes
1answer
546 views

Maintain speed in box2D body

I want to delimit my speed and to maintain that speed constantly, but it gets getting higher and if i apply the linear velocity it doesnt bounce :/, Here is te part of my code double fx = ...
0
votes
1answer
647 views

libgdx spite position relative to body

Apologies if this is a reiteration, as I couldn't find another discussion of this over the past couple days. Issue: I'm using libgdx and box2d, and I'm currently updating the sprite's position to ...
2
votes
1answer
1k views

Speed of bodies in Box2D and libgdx

I want to move my bodies at higher speeds, but they have a top speed. I have an Ortoghraphic camera defined at 800x480. My world doesnt have gravity. I apply an impulse of 1000,and a force of 1000 ...
0
votes
0answers
341 views

Problem with rotation in Box2D

I have my sprites and my bodies, and my problem is the following: I rotate a sprite that doesn't have a body, but it has a projectile as a child, and that projectile has a body attached to it, and ...
3
votes
1answer
2k views

sprite display does not match its body in box2d

I found about this using debug renderer. When game starts, everything is in order. But when some collision happens, sprite's rotation is way larger than its body. When sprite and body match is the ...