The topic says it all. How can I start with an empty inventory. This is what happens.
1)My friend sends our map to my pc
2)I put it in saves in the .minecraft folder
3)I start with a bucket and a compass
We deleted our inventory before he sent it to me, so i have no idea why i start with stuff. It is the first time i start it too!
The game saves only so often. If you empty your inventory and log out before the save point (default is 0.3 seconds I think) then you'll still have the items when you log back in. Some mods can make the save time longer, such as Optifine, so if you're using that you'll need to wait longer before logging out.
Depending on the type of map, it could also have separate data for different players. Maps that were used for servers could have this issue.