$${if(invfunc);unset(invfunc);log(&aLogic Invent &bOFF);STOP;
else;set(invfunc);log(&aLogic Invent &bON);endif;

do;
ifmatches(%GUI%,inventory);
if(KEY_W);keydown(forward);sprint;else;keyup(forward);endif;
if(KEY_S);keydown(back);sprint;else;keyup(back);endif;
if(KEY_A);keydown(left);sprint;else;keyup(left);endif;
if(KEY_D);keydown(right);sprint;else;keyup(right);endif;
if(KEY_SPACE);keydown(jump);else;keyup(jump);endif;
endif;
loop;
}$$