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function moveLeft(entity, len, speed)
local remaining = len / speed
while (remaining > 0) do
entity:ponderable().vel.x = -speed
remaining = remaining - coroutine.yield()
end
end
function moveRight(entity, len, speed)
local remaining = len / speed
while (remaining > 0) do
entity:ponderable().vel.x = speed
remaining = remaining - coroutine.yield()
end
end
function run(entity)
while true do
moveRight(entity, 90, 30)
moveLeft(entity, 90, 30)
end
end
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