*EDIT* Setting MeshInstance material to a SpatialMaterial GDNative C++

EDIT Setting MeshInstance material to a SpatialMaterial GDNative C++

Lousifr

I wish to use C++ as the only language I program in. Currently making a template to use for hex based strategy games. I originally was using gdscript to program in, but for reasons (mostly personal, partly performance) I would rather use C++. Here is an example of the version I created using GDScript:

In GDNative, I can't set the material of the MeshInstance to a Ref<SpatialMaterial>, so although the game loads properly, the meshes are all white. Example:

How do I do this? Also, despite me seeding the C++ rand() function using time(0), the game will generate the same map everytime. How to fix?

Here is the relevant code:

  if (_elevation < _waterThreshold) {
    _meshInstance->set_surface_material(0, _waterMaterial);
    _position.y = -0.125;
  } else if (_elevation < _sandThreshold) {
    _meshInstance->set_surface_material(0, _sandMaterial);
    _position.y = 0;
  } else if (_elevation < _plainsThreshold) {
    _meshInstance->set_surface_material(0, _plainsMaterial);
    _position.y = 0;
  } else if (_elevation < _grassThreshold) {
    _meshInstance->set_surface_material(0, _grassMaterial);
    _position.y = 0;
  } else if (_elevation < _mountainThreshold) {
    _meshInstance->set_surface_material(0, _mountainMaterial);
    _position.y = pow(1 + (_elevation - 0.225), 12.5) * 0.25;
  } else {
    _meshInstance->set_surface_material(0, _peakMaterial);
    _position.y = pow(1 + (_elevation - 0.225), 12.5) * 0.25;
  }
  set_translation(_position);

  _meshArray = pMeshArray;
  _meshInstance->set_mesh(_meshArray);
  add_child(_meshInstance);

Lousifr

Figured out what troubled me before. Now trying to route the entire project through a "root" node, from which I build the scene entirely in code. The problem I run into seems to be the setting of map variables using properties. The function for map generation is being called, however when it comes to the actual generation, it fails the check for map dimensions. Example below.

/* root.cpp */
void Root::set_numRow(int pRow)
{
  Godot::print("lol"); //--- GETS CALLED ---//
  _numRow = pRow;
  Godot::print(_numRow); //--- DOES NOTHING ---//
}

void Root::_init()
{
  _hexMap->load_resources(_numRow, _numCol, _waterMaterial, _sandMaterial, _plainsMaterial, _grassMaterial, _mountainMaterial, _peakMaterial, _hexMesh);
  _hexMap->generate_map();
  add_child(_hexMap);
  add_child(_cameraController);
}

/* hexMap.cpp */
void HexMap::load_resources(int pNumRow, int pNumCol, Ref<SpatialMaterial> pWaterMaterial, Ref<SpatialMaterial> pSandMaterial, Ref<SpatialMaterial> pPlainsMaterial, Ref<SpatialMaterial> pGrassMaterial, Ref<SpatialMaterial> pMountainMaterial, Ref<SpatialMaterial> pPeakMaterial, Ref<ArrayMesh> pHexMesh)
{
  Godot::print("lol"); //--- GETS CALLED ---//
  _numRow = pNumRow;
  _numCol = pNumCol;
  _waterMaterial = pWaterMaterial;
  _sandMaterial = pSandMaterial;
  _plainsMaterial = pPlainsMaterial;
  _grassMaterial = pGrassMaterial;
  _mountainMaterial = pMountainMaterial;
  _peakMaterial = pPeakMaterial;
  _hexMesh = pHexMesh;
  Godot::print(_numRow); //--- PRINTS "K" ---//
}

void HexMap::generate_map()
{
  Godot::print("lol"); //--- GETS CALLED ---//
  for (int x = 0; x < _numRow; x++) {
    for (int y = 0; y < _numCol; y++) {
      Godot::print("lol"); //--- DOESN'T GET CALLED ---//
    }
  }
}