How Left 4 Dead's AI Director Works

Описание: Explanation of how Left 4 Dead 1's AI director populates the world.

Segments:
Intro - 0:00
Key Data Structures & Metrics - 0:54
Map Initialization - 4:30
Director States - 5:41
Boss Infected & Panic Events - 10:18
Outro - 12:38

Music used:
No Mercy Intro - Left 4 Dead
   • Heroes' Adventure (EB) SPC-to-OPL3 conversion  
PREPSONG.KDM - Ken Silverman
Gallery Theme - Luigi's Mansion
QUIKSONG.KDM - Ken Silverman

Note about Panic events:
Originally in this script I wrote about how there are different types of panic events. Holdout, Gauntlet and Objective (Commonly gas cans). But this is not the case in the original Left 4 Dead. L4D1 only had the holdout type. You may say "Hey, isn't that one event with the forklift in Death Toll a gauntlet event?". No, in the original game it was just a holdout section. For the Left 4 Dead 2 port, they made it a gauntlet event because the gauntlet event's functionality was made for parts in L4D2's campaigns, such as in Dead Center's mall alarm, and The Parish's bridge finale. This is the same with the Objective event type, but that's more obvious because there is no gas can event in L4D1.

Presentation by Valve: https://steamcdn-a.akamaihd.net/apps/...

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