Step 3: If You Say So

We'll use LameControl to access the joystick. The LameControl commands return true if a button or direction is pressed, or false.

The IF keyword allows us to test if an expression is true, and if so, run some code. The code to run should be immediately after the IF and indented.

if condition
    ' put code to execute if true here
else
    ' put code to execute if false here

None of the functions will return anything until ctrl.Update is called, so make sure to call it first.

Snake.spin

    snakex := 32
    snakey := 32

    ctrl.Update

    if ctrl.Left
        snakex--
    if ctrl.Right
        snakex++
    if ctrl.Up
        snakey--
    if ctrl.Down
        snakey++

    gfx.Sprite(@dot_gfx, snakex, snakey, 0)
    lcd.Draw