Scratch

when gf clicked
forever
if<key [up arrow v] pressed?>
change y by (4)
if<touching [#000000]?>
change y by (-4)
end
end
if<key [down arrow v] pressed?>
change y by (-4)
if<touching [#000000]?>
change y by (4)
end
end
if<key [right arrow v] pressed?>
change x by (4)
if<touching [#000000]?>
change x by (-4)
end
end
if<key [left arrow v] pressed?>
change x by (-4)
if<touching [#000000]?>
change x by (4)
end
end

ftf841 wrote:

when gf clicked
forever
if <touching [wall v] ?>
change x by [-4]

There is a little problem with that.
The wall is part of the background and not a sprite.

That script could work if the walls were turned into a sprite.

mythbusteranimator wrote:

You need to make the wall thincker. On of my "Archery" games (see below), there is an occasional glitch that makes it go through the walls. I've got many suggestions saying that i need to make the wall thicker.

Actually you can either make the wall thicker or the arrow longer, or simply decrease the speed of the arrow.  I believe the glitch you're speaking of is caused by the arrow moving faster and it is long, so it skips over some pixels when it moves.