JBox2D is a java physics engine often used in games an other physics simulations, and is a port/extension of the C++ physics engine, Box2D.

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Box2d world width and height ratio with screen width and height

I have view, for example GameView which extends SurfaceView . I have integrated Box2D physics in GameView. I have two widths , GameView width, height and Box2D physics world width ,height. I need to ...
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JBox2D Polygon Collisions Acting Strange

I have been playing around with JBox2D and Slick2D and made a little demo with a ground object, a box object, and two different polygons. The problem I am facing is that the collision-detection for ...
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GWT problem with Box2D WheelJoint

I am using the below libgdx java code for a wheel joint and rear axle using Box2D. This works fine for android, Desktop, but when I attempt to run through GWT I get the following error. at ...
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Apply impulse to ball to a fixed height Jbox2D android

I have to hit a ball to a fixed height repeatedly as shown in the following image. This game is similar to 1983 Hitit The difference is the hitting y axis will be variable. I wanted to hit the ...
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Impact js Multibody entities with animations

I have a simple impactjs project working with box2d. just a "car" that can run over some rough terrain. I would like to have the wheels spin though. I know I could accomplish this with a sprite sheet ...
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Libgdx - Box2D: Attach Physics Body Editor Loader mask to dynamic texture

I have a texture of a circle, which gets drawn to a new position when a touch drag occurs. It isn’t set up as a body. I have made a physics map using Aurelien Ribon's Physics Body Editor Loader GUI ...