The AI Systems of Left 4 Dead - Valve

More documents

Recommendations

Info

Goal: Generate dramatic game pacing ‣ What do we mean by “dramatic game pacing” • Algorithmically adjusting game pacing on the fly to maximize “drama” (player excitement/intensity) ‣ Inspired by Observations from Counter-Strike • Natural pacing of CS is "spiky”, with periods of quiet tension punctuated by unpredictable moments of intense combat • Constant, unchanging combat is fatiguing • Long periods of inactivity are boring • Unpredictable peaks and valleys of intensity create a powerfully compelling and replayable experience • Same scenario, often the same map, yet different and compelling experience each round
Goal: Generate dramatic game pacing ‣ Adaptive Dramatic Pacing algorithm • Creates peaks and valleys of intensity similar to the proven pacing success of Counter-Strike • Algorithm: • Estimate the “emotional intensity” of each Survivor • Track the max intensity of all 4 Survivors • If intensity is too high, remove major threats for awhile • Otherwise, create an interesting population of threats • Another key system of the “AI Director”
Page 1 and 2:
The AI Systems of Left 4 Dead Micha
Page 3 and 4:
Left 4 Dead: The Survivor Team
Page 5 and 6:
Left 4 Dead: The Special Infected
Page 7 and 8:
Left 4 Dead
Page 9 and 10:
Left 4 Dead
Page 11 and 12:
Goals of Left 4 Dead AI ‣ Deliver
Page 13 and 14:
Goal: Deliver Robust Behavior Perfo
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28: Goal: Deliver Robust Behavior Perfo
Page 47 and 48: Goal: Provide Competent Human Playe
Page 49 and 50: Goal: Provide Competent Human Playe
Page 51 and 52: Goals of Left 4 Dead AI ‣ Deliver
Page 53 and 54: Goal: Promote Replayability ‣ In
Page 55 and 56: Goal: Promote Replayability Procedu
Page 57 and 58: ‣ The Navigation Mesh • Represe
Page 61 and 62: ‣ The Active Area Set Goal: Promo
Page 63 and 64: ‣ The Active Area Set Goal: Promo
Page 77: Goals of Left 4 Dead AI ‣ Deliver
Page 81 and 82: Goal: Generate dramatic game pacing
Page 93 and 94: ‣ Just the beginning… • Expan
Page 95: THANK YOU!
show all

The AI Systems of Left 4 Dead - Valve

Create successful ePaper yourself

Delete template?

Save as template?