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==Finite State Machines and the State Pattern==
==Finite State Machines and the State Pattern==
Give the title of your exercise, which may include the name of the topic you are covering, or some other catchy title.


===The problem===
===The problem===


Finite state machines are abstract models of systems that have a set number of states, inputs, and rules for transitioning from one state to another. Understanding all the parts of a FSM can be difficult, especially in systems that feature a large number of states and transitions.   
Finite state machines are abstract models of systems that have a set number of states, inputs, and rules for transitioning from one state to another. Understanding all the parts of a FSM can be difficult, especially in systems that feature a large number of states and transitions.  As an interesting application, a Finite State Machine can be used to model the emotional states of an Non-Player Character (NPC) in video games.   


===Participants and props===
===Participants and props===


How many students will participate? What else do you need (e.g., old tennis ball, Powerpoint slides, software).
Students should work in pairs.  In Part 1, one student will act as the FSM, and the other will act as the environment. The student acting as the FSM should reference the following table (which may be printed on a notecard) to determine their reaction to stimuli.
 
{| border="1" cellspacing="0" cellpadding="5"
!
! Compliment
! Dull Comment
! Insult
|-
| '''Amicable'''
| Amicable
| Neutral
| Neutral
|-
| '''Neutral'''
| Amicable
| Neutral
| Agitated
|-
| '''Agitated'''
| Neutral
| Agitated
| Agitated
|}
 
The other student should use the following list of generic insults, compliments and dull comments:
 
 
{| border="1" cellspacing="0" cellpadding="5"
! Compliments
! Dull Comments
! Insults
|-
|
*"You have a lovely smile."
*"Your intellect astounds me."
*"You move very gracefully."
|
*"The weather is nice today."
*"That desk looks heavy."
*"Space travel is boring."
|
*"You disgust me."
*"Clearly, you don't understand."
*"Please be quiet, the adults are talking."
|}


===The script===
===The script===


====Part 1: The Finite State Machine====
====Part 1: The Finite State Machine====


====Part 2: Extending with the State Pattern====
====Part 2: Extending with the State Pattern====

Revision as of 02:19, 21 April 2008

Finite State Machines and the State Pattern

The problem

Finite state machines are abstract models of systems that have a set number of states, inputs, and rules for transitioning from one state to another. Understanding all the parts of a FSM can be difficult, especially in systems that feature a large number of states and transitions. As an interesting application, a Finite State Machine can be used to model the emotional states of an Non-Player Character (NPC) in video games.

Participants and props

Students should work in pairs. In Part 1, one student will act as the FSM, and the other will act as the environment. The student acting as the FSM should reference the following table (which may be printed on a notecard) to determine their reaction to stimuli.

Compliment Dull Comment Insult
Amicable Amicable Neutral Neutral
Neutral Amicable Neutral Agitated
Agitated Neutral Agitated Agitated

The other student should use the following list of generic insults, compliments and dull comments:


Compliments Dull Comments Insults
  • "You have a lovely smile."
  • "Your intellect astounds me."
  • "You move very gracefully."
  • "The weather is nice today."
  • "That desk looks heavy."
  • "Space travel is boring."
  • "You disgust me."
  • "Clearly, you don't understand."
  • "Please be quiet, the adults are talking."

The script

Part 1: The Finite State Machine

Part 2: Extending with the State Pattern

Formatting Resources

Formatting Help Guide from MetaWiki

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