Add 3 New area
Open world optimization
Add some new mobs and villager
But the world is still empty.
I spent too much time optimizing the game this month.
Next month I will focus on adding new gameplay future and debug.
Also fixed old dungeon mode does not show all mobs bug.
(It's because the save data save the mob base on filepath, now I game all the mobs a ID.)
But all the old dungeon mobs will change to default shield skeleton. I am sorry about this, I didn't design it well the first time
