Hello,

I've been doing something to simulate some physics issues such as gravity/acceleration, force, mass and velocity, all of this based in one chapter of the book "Game Physics Engine Development".  I created 2 examples to simulate it and you can download it through the following links:

http://www.mediafire.com/?92qlo9ekdbahlf0

http://www.mediafire.com/?nafs5d2hab3k2wy

The first one is the easiest, it only has a sphere that can be shot in 4 different ways (in each shot, acceleration, mass and velocity are changed in the code). The second one is based on JPCT-AE example, but with one extra 3D model (r2d2) that is able to shoot some "bullets" changing the angle in X and Y axis, the velocity is incremented depending on the time that DPAD_CENTER button is pressed. I was thinking in programming some kind of "Gunbound" communicating 2 devices via bluetooth 

I hope this can help 

Hello,

I've been doing something to simulate some physics issues such as gravity/acceleration, force, mass and velocity, all of this based in one chapter of the book "Game Physics Engine Development".  I created 2 examples to simulate it and you can download it through the following links:

http://www.mediafire.com/?92qlo9ekdbahlf0

http://www.mediafire.com/?nafs5d2hab3k2wy

The first one is the easiest, it only has a sphere that can be shot in 4 different ways (in each shot, acceleration, mass and velocity are changed in the code). The second one is based on JPCT-AE example, but with one extra 3D model (r2d2) that is able to shoot some "bullets" changing the angle in X and Y axis, the velocity is incremented depending on the time that DPAD_CENTER button is pressed. I was thinking in programming some kind of "Gunbound" communicating 2 devices via bluetooth 

I hope this can help 

Ok, thanks 

I was playing with HelloWorld-AE example that is included with the library and I noticed that positive Y axis goes down and negative Y axis goes up. Is there some method which can invert this?. I mean, I want positive Y axis goes up and negative Y axis goes down.

Thanks for your answer.

Hello,

I was testing the HelloWorld example that is included with the library. It shows a cube, however I would like to do an animation with that cube. For example, I want the cube to move depending of a math function; however, when I try to translate it, without a loop in the onDrawFrame(GL10 gl) method:


cube.translate(new SimpleVector(1, 0, 0));


It moves like an animation through the positive X axis, when I expected just to move one unit(1) to the right. This makes me difficult to move an object depending of a math function. I would like to move it with a Thread, but this doesn't help me.

So, is it possible to move an object without animating it, as it is done in OGL?

Thanks for your answer.

Hello,

I'm trying to load a 3ds object. As it is a big a one, it turns into an array of Object3D. When I want to rotate the whole 3D model around the X axis, I do it by using a for() statement, which rotates each element of the array; however, after rotating each element, the complete 3D model is shown disordered, for example: a 3D car is shown with tires on the car's roof, doors where tires should be, etc. I know the rotation is producing this problem, I also tried to rotate it around a differente axis, but I didn't find the correct axis to do it. Is there an easier way to solve my problem?

Thanks for your answer