[Tutor] Method for 'scheduling' object actions

[Bob Gailer]

At 07:09 AM 10/4/2004, gyrof wrote:
>Hi,
>I am designing an application in which several objects need to perform 
>certain actions according to the 'time' on a simulated clock. This clock 
>has no relationship with the actual system or wall clock time, but will 
>proceed from time=0 to time=end_time in some defined increments. Along the 
>way, objects need to be triggered to call certain of their methods when 
>the time reaches a certain point.
>
>For instance,
>'time'          action
>------          ------
>   0             object A.start method is called
>   0             object B.start method is called
>   5             object A.grow method is called
>   6             object B.grow method is called
>   10            object B.pass_info_to_A method is called
>   10            object A.slow_growth method is called
>   12            object A.die method is called
>   20            object B.end method is called
>
>I would like to come up with some sort of flexible and extensible 
>scheduler scheme in which these types of actions can take place. I have 
>read a bit about SimPy, which is a discrete event simulator, but this 
>seems overly complex to me and I'm not even sure if it's appropriate.

Take a look at the sched module.

Bob Gailer
bgailer at alum.rpi.edu
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