you might wanna use bgofs then to move the background rather than animate it. example
bx=0:by=0
while 1
b=button()
if b and #right then inc bx
if b and #left then dec bx
bgofs 0,bx,by:bgofs 1,bx,by
bgofs 2,bx,by:bgofs 3,bx,by
vsync
wend
0そうだね プレイ済み