The AI Systems of Left 4 Dead - Valve

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Goal: Deliver Robust Behavior Performances ‣ Moving through the Environment • A* through Navigation Mesh • Creates jagged path • How to move fluidly
Goal: Deliver Robust Behavior Performances ‣ Path Optimization • Collapse redundant path nodes • Good • Creates minimal and direct path • Bad • Nontrivial CPU cost at path build time • Paths are recomputed <strong>of</strong>ten in the game • Following path directly looks robotic
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: Goals of Left 4 Dead AI ‣ Deliver
Page 15 and 16: 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 59 and 60: Goal: Promote Replayability Procedu
Page 61 and 62: ‣ The Active Area Set Goal: Promo
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‣ The Active Area Set Goal: Promo
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Goal: Promote Replayability Procedu
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Goals of Left 4 Dead AI ‣ Deliver
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Goal: Generate dramatic game pacing
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‣ Just the beginning… • Expan
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THANK YOU!
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The AI Systems of Left 4 Dead - Valve

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