riscv use keyboard and simulator

current given function

$1.$ printchar : print one single char in specific area

$2.$printstring: print one string in spefcific area

$3.$print table: create a area for snake game

$4.$ handler: check when time inter and last key pressed,reset timecap

$5.$ main$->1,2,3$ for $3$ level game.

$6.$ game: start time inter and set timecap

there is loop under game

loop:

dreaw a $3$ point snake @as head. it will appear at center when game start$(20*20)$ it will move one each second$\_>$move right and game stop when it touch wall$($I will write that stop myself$)$ and when wasd one of it key press snake will change direction$($but if it go to right, it can not go left, only up or down$).$ when appale$($ there is a random I write to perfrom$),$ get extra time$(5$s$)$ but it would not get longer for snake $.$ snake would never touch it body

how to write this loop