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This tutorial is going to tell you how to make a program that moves the player in lua.

ok, first define our colors:

red = Color.new(255,0,0)

next, we need to have an array for the player:

player = {x = 0, y = 0, img = Image.createEmpty(32,32)}
player.img:clear(red)

next we have our function:

function controls()
if pad:up() then
player.y = player.y - 2
end
if pad:down() then
player.y = player.y + 2
end
if pad:left() then
player.y = player.x - 2
end
if pad:right() then
player.x = player.x + 2
end
end

and finally, our main loop:

while true do
screen:clear()
pad = Controls.read()
controls()

screen.waitVblankStart()
screen.flip()
end

and that's all there is to it!