#include "utils.h"

#define RANDOM_DIRECTION_UNITS 4096

Vector2 randomDirection2(int seed, int* nextSeed)
{
  Vector2 direction;
  direction.x = FT_RANDOM16(seed) % RANDOM_DIRECTION_UNITS;
  direction.y = FT_RANDOM16(seed) % RANDOM_DIRECTION_UNITS;
  direction.x -= RANDOM_DIRECTION_UNITS / 2.0;
  direction.y -= RANDOM_DIRECTION_UNITS / 2.0;

  if (nextSeed != NULL)
  {
    *nextSeed = seed;
  }

  return Vector2Normalize(direction);
}

Vector3 randomDirection3(int seed, int* nextSeed)
{
  Vector3 direction;
  direction.x = FT_RANDOM16(seed) % RANDOM_DIRECTION_UNITS;
  direction.y = FT_RANDOM16(seed) % RANDOM_DIRECTION_UNITS;
  direction.z = FT_RANDOM16(seed) % RANDOM_DIRECTION_UNITS;
  direction.x -= RANDOM_DIRECTION_UNITS / 2.0;
  direction.y -= RANDOM_DIRECTION_UNITS / 2.0;
  direction.z -= RANDOM_DIRECTION_UNITS / 2.0;

  if (nextSeed != NULL)
  {
    *nextSeed = seed;
  }

  return Vector3Normalize(direction);
}

// Why does the universe feel strange to exist in?