public void SetPropulsionTechs(List<Technology> techs)
{
UnresearchedPropulsionTechs = new List<Technology>(techs);
ResearchedPropulsionTechs = new List<Technology>();
foreach (var tech in techs)
{
if (tech.TechLevel == 1)
{
ResearchedPropulsionTechs.Add(tech);
UnresearchedPropulsionTechs.Remove(tech);
}
}
}