@node Coroutines
@section Coroutines

Coroutines are the building block for cooperative multitasking. When
used with agendas, they are a powerful mechanism for writing game
scripts.

@anchor{2d coroutine coroutine}@defun coroutine thunk
Calls a procedure that can yield a continuation.

@end defun

@anchor{2d coroutine colambda}@defspec colambda args body ...
Syntacic sugar for a lambda that is run as a coroutine.

@end defspec

@anchor{2d coroutine codefine}@defspec codefine (name ...) . body
Syntactic sugar for defining a procedure that is run as a coroutine.

@end defspec

@anchor{2d coroutine codefine*}@defspec codefine* (name ...) . body
Syntactic sugar for defining a procedure with optional and keyword
arguments that is run as a coroutine.

@end defspec

@anchor{2d coroutine wait}@defun wait [delay]
Yield coroutine and schdule the continuation to be run after DELAY
ticks.

@end defun

@anchor{2d coroutine yield}@defun yield callback
Yield continuation to a CALLBACK procedure.

@end defun