Pencil Code Reference > await
await prevents everything after it from running until a value is returned by a function.
await function() defer(x)
keydown, etc.) and
await read defer() is an easy way to wait for an input from the user.
Input the following commands to control the turtle in the example below.
fd: move forward 50
bk: move backward 50
rt: turn right 15
lt: turn left 15
p = write '' while x isnt 'done' await read 'Input: ', defer(x) if x is 'fd' fd 50 if x is 'bk' bk 50 if x is 'lt' lt 15 if x is 'rt' rt 15 ct()
await done defer()
await done defer() is the most commonly used form of
await, rivaled only by
await read and
await done defer() is used to prevent everything after it from running until everything before it is done. However,
await done defer() is not just a simple pause.