Simple Techniques for Coordinated Behavior

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Simple Techniques for Coordinated Behavior

• Presentation by Jonathan Martin
• Based on Chapter 3.2 of AI Game Programming
  Wisdom 2, by Jeff Orkin

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Tactical Espionage Action

• Lets continue the example from the last section
• Our agents use a simple pathfinding scheme (most
  likely A)
• We do not have enough resources for a group
  behavior layer

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Lets see what happens
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• To avoid this, we can let agents reserve a path
  node
• When a node is reserved, set its cost to
  something very high, so other agents will have to
  find another way

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Lets see what happens

• Now we have the illusion of group behavior
  without a separate layer!

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RESERVED
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50
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Get Out of My Way!

• Now that weve surrounded the player, we want to
  shoot him without shooting each other
• This can be done very simply
• on (fire)
• if we have line of sight, fire!
• else if obstructing object is an ally, ask him
  to move!
• if ally is busy, or obstruction is not an ally,
  move!
• Adding audio cues adds to realism