Pass through the grid

Avoid touching the deathly walls. Walls are moving but you can toggle directions using fire button.

A game in 548 characters of code for TweetTweetJam 5

This game was made for #TweetTweetJam and contains only 548 characters of code, including art. The code is below:

_set_fps(60)pal(7,13,1)h,z=0,btn::s::g,t,r,x,y,m,s,p=pget,0,.02,64,96,120,0,{} for i=1,m do a="" for j=1,8 do if rnd()<.6 then a=a.." " else a=a.."██" end end v=10+rnd(10) if(i%2>0)v=-v p[i]={a,v}end::_::cls()t+=r if(z(0))x-=.5 if(z(1))x+=.5 if(z(2))y+=.5 if(z(3) and y>96)y-=1 if(btnp(4))r=-r x=mid(x,m)for i=1,#p do q=p[i]a,b,c=q[1],(t*q[2])%128,y-8*i if mid(-3,c,131)==c then ?a,b-128,c,5+(i%6) ?a,b,c end end if(g(x,m)+g(x+6,m)+g(x,m+4)+g(x+6,m+4)>0)h=max(s,h)goto s ?"😐",x,m,12 s=max(s,flr((y-96)/8)) ?"s: "..s.." h: "..h,0,0,6 flip()goto _