Invert gravity

A simple endless runner in 560 characters of code. You have to invert gravity to skip the deadly spikes. Speed gets faster and faster. Press Z to invert gravity.

https://www.lexaloffle.com/bbs/?tid=37758

This game was made for #TweetTweetJam and contains only 560 characters of code, including art. The code is below:

_set_fps(60)h=0::s::p,x,y,z,b,t,e,f,g,l,m={},16,64,0,0,1,1,.02,.1,0,128 for i=1,900 do p[i]=flr(rnd(3))end ::_::cls(1)t+=f if(btn(4) and e>0)b,y,z,e=130-b,138-y,0,0 poke(24364,b)for i=0,m do u=t+i/64 r=(m*u)%x if(r>8)r=x-r q=p[flr(u)] if(b>0 and q>0)q=3-q v=8*(sin(u)+sin(u/2)) c,w=3,104-v if(q%2>0)w,c=w+r,12 rect(i,w,i,m,c) if i==x then if y<w then="" z+="g" y+="z" else="" y,z,e="w,0,1" if(c="=12)h=max(h,s)goto" s="" end="" c,w="3,24+v" if(band(q,2)="">0)w,c=w-r,12 rect(i,0,i,w,c) end ?"웃",x,y-5,10 s=flr(t) if(s>l)f,g,l=f+.001,g+.025,l+1 ?"s: "..s.." h: "..h,0,0 flip()goto _