current VHGT parsing

loadland.cpp

        esm.getHNExact(&rawHeights, sizeof(VHGT), "VHGT");

        float base = rawHeights.heightOffset;
        int currentHeightIndex = 0;
        for (int y = 0; y < LAND_SIZE; y++)
        {
            uint8_t delta = rawHeights.heightData[currentHeightIndex];
            currentHeightIndex++;
            base += delta;
            landData->heights[y * LAND_SIZE] = base * HEIGHT_SCALE;
            float scratch = base;
            for (int x = 1; x < LAND_SIZE; x++)
            {
                uint8_t delta = rawHeights.heightData[currentHeightIndex];
                currentHeightIndex++;
                scratch += delta;
                landData->heights[x + y * LAND_SIZE] = scratch
                        * HEIGHT_SCALE;
            }
        }

I don't have the complete context here, so it's difficult to say exactly what may be wrong.

However, for one thing the code above seems to be recording the deltas as unsigned bytes. They should be signed bytes. The landscape height can go both up and down :)

FYI, search for "VHGT" in https://github.com/athile/lxengine/blob/master/lx0/dev/samples/games/lxmorrowind/tes3loader/imp.cpp to see the code I used to load the heights.

Also, there's no "HEIGHT_SCALE" in my code. As far as I could tell, the heights are already in Morrowind units. (The horizontal and vertical has a fixed scale though, as the landscape represents a 8192x8192 rectangular area with 65x65 height samples, each 128 Morrowind units apart.)

thanks for info & hint