Java - Create world collision with Heightmap (JBullet)

Question

I'm trying to create an infinite playable world with Jogl, Jbullet, and OpenSimplexNoise (OSN). I'm generating the world with OSN, rendering it successfully, but I don't know how to add it to the world/collision system.

I found the btHeightfieldTerrainShape class, but it isn't implemented in Java. I tried to use BvhTriangleMeshShape too, but i don't understand how it work.

I have 3 values of generation:

• int smooth: the number of division in one meter
• int viewDistance: the number of chunk to draw in one axis
• int chunkSize: the number on meter in one chunk

I'm using this code for generate heightmap:

/**
 * Generate all height in the chunk p[cx][cy].
 */
private float[][] genPerlinMap(int[] p) {
    float[][] pts = new float[chunkSize*smooth+1][chunkSize*smooth+1];
    for(int i1=0;i1<chunkSize*smooth+1;i1++){
        for(int i2=0;i2<chunkSize*smooth+1;i2++){
            pts[i1][i2] = (float) (osp.eval(
                    (p[0]*chunkSize+i1/(float)(smooth))/(float) (mapSize),
                    (p[1]*chunkSize+i2/(float)(smooth))/(float) (mapSize)
            )+1)*0.5f*mapSize;
        }
    }
    return pts;
}

Does someone know how to add this ?

Answer 1

I found a solution: use https://github.com/bubblecloud/jbullet (jbullet from github) with the code here: https://github.com/bubblecloud/jbullet/commit/a5da8cdc679e998ef3a8605ee9b3cd5f94d71fee .

Thanks gouessej for the jbullet github link :)