Function AddSpectra

editor/editor_lighting.cpp:1679–1683

Adds color spectrums together

// Adds color spectrums together
void AddSpectra(spectra *dest, spectra *a, spectra *b) {
  dest->r = a->r + b->r;
  dest->g = a->g + b->g;
  dest->b = a->b + b->b;
}

// Returns 1 if a src vector can hit dest vector unobstructed, else 0
int ShootRayForTerrainLight(vector *src, vector *dest, int cellnum) {