random time range is now 31 to 999 rather than 1 to 999. Now answer count down once per second. firstMax is now 1000 from 10000 prevent user from typing when game is over. prevent user from typing when he/she is done, but others are not. removed unused low_num_bullet_visibility
random time range is now 31 to 999 rather than 1 to 999.
Now answer count down once per second.
firstMax is now 1000 from 10000
prevent user from typing when game is over.
prevent user from typing when he/she is done, but others are not.
removed unused low_num_bullet_visibility

bosung90/Esc,bosung90/Esc