// (1) Update cost of getting PP
// (2) Update unit appearance --------------------
// (3) Update Music List
// (4) Update Culture Card Deck
public void swichEra()
{
State.NextEra();
MyEnum.Era era = State.GerEra();
foreach (Nation nation in State.getNations().Values)
{
AI ai = nation.getAI();
TopLevel topLevel = ai.getTopLevel();
topLevel.updateResourcesToKeepNewEra();
topLevel.updateGoodsToKeepNewEra();
}
if (era == MyEnum.Era.Late)
{
earlyPP_Cost.SetActive(false);
latePP_Cost.SetActive(true);
}
App app = UnityEngine.Object.FindObjectOfType <App>();
Music music = app.GetComponent <Music>();
music.goToNextEra(era);
if (music.musicOn)
{
music.PlayMusic();
}
//State.getCultureDeck();
}