a terrain request

[x1911]

First of all, thats a really really great project.

I'd like to ask if you could provide the code for Havok terrain?

I would be incredibly grateful.

[lo-th]

Hi thanks
for havok terrain work like other body you just need this shape

const shape = havok.HP_Shape_CreateHeightField( divid[0], divid[1], scale, heights.byteOffset )[1]
const body = havok.HP_Body_Create()[1];
havok.HP_Body_SetShape( body, shape  )

divid is number of square ex [ 128,128 ]
scale is size of terrain ex [ 200, 3, 200]
heights is array of all point height you need create _malloc array ( ar is your array of y position )

const nFloats = ar.length
const bytesPerFloat = 4
const nBytes = nFloats * bytesPerFloat
const bufferBegin = havok._malloc(nBytes)
heights = new Float32Array( havok.HEAPU8.buffer, bufferBegin, nFloats )
let i = ar.length, n = 0
while(i--){  this.heights[i] = ar[n++];   }

[x1911]

Thank you very much.

It seems that the movement of your terrain is experiencing significant stuttering or lag.

This is my code

        const data = [
            [0.24, 0.5, 0.25, 0.25, 0.25, 0.15, 0.1, 0],
            [0.24, 0.5, 0.25, 0.25, 0.25, 0.15, 0.1, 0],
            [0.24, 0.5, 0.25, 0.25, 0.25, 0.15, 0.1, 0],
        ]

            const scale = new THREE.Vector3(5, 8, 3)
            const numXSamples = data[0].length
            const numZSamples = data.length

            const nFloats = data.length;
            const bytesPerFloat = 4;
            const nBytes = nFloats * bytesPerFloat;
            const bufferBegin = havok._malloc(nBytes);

            const heights = new Float32Array(havok.HEAPU8.buffer, bufferBegin, nFloats)
            let i = arr.length, n = 0
            while (i--) { heights[i] = arr[n++]; }

            const ss = [scale.x, scale.y, scale.z]
            const shape = havok.HP_Shape_CreateHeightField(numXSamples, numZSamples, ss, bufferBegin)[1]
            

        const { position, quaternion: q } = mesh

        const boxBody = HK.HP_Body_Create()[1];
        HK.HP_Body_SetShape(
            boxBody,
            shape
        );
        HK.HP_Body_SetQTransform(
            boxBody, [
            [position.x, position.y, position.z],
            [q.x, q.y, q.z, q.w]
        ]
        )
        HK.HP_World_AddBody(world, boxBody, false);

[lo-th]

about lag yes i have to experiment
height data should be update not recreate on every frame.