How game starts

[RickLothar]

When entering the game, the player must do the following:

1. enter a password
2. if the password is correct, goto 3, else goto 1
3. Choose the start level(new player-goto 4 or returning players-goto 5)
4. Start the game at the introduction1 level
5. Start the game at the JumpWorld

Acceptance criteria

• [x] Pop out a window when hitting the proxy window

• [x] If the player entered the right password, let the player choose player's type

• [x] If the password is incorrect, ask the player to type it again

• [x] If the player chooses "new player", start the game at the instruction level

• [x] If the player chooses "returning player", start the game at the JumpWorld level