Criterion

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A criterion is a match condition. If it doesn't match, it scores 0. If it does match, the score is its weight value.

The Response system checks each rule against the set, give it a numeric score based on the rule's set of criteria. Then the system picks one rule with the highest score, dispatch a response that the rule points.

criterion <criterionname> <matchkey> <matchvalue> weight nnn required

matchkey

Many keyvalue pairs are updated in ModifyOrAppendCriteria( AI_CriteriaSet& set ) & CAI_ExpresserHost_DoModifyOrAppendCriteria( CAI_BaseNPC *pSpeaker, AI_CriteriaSet& set ) and player and NPC codes.

Also mappers can set keyvalue pairs via the Context system.

• concept
• map
• classname
• name
• health
• healthFrac
• playerHealth
• player
• playerWeapon
• playerActivity
• playerSpeed
• npcstate
• distancetoplayer
• seeplayer
• seenbyplayer
• timesincecombat
• shotloc
• enemy
• gordon_precriminal
• attacking_with_weapon
• hurt_by_fire
• numselected
• useradio
• commandpoint_dist_to_npc
• commandpoint_dist_to_player
• numjoining
• reinforcement

matchvalue

• "0"; numeric match to value 0
• "1"; numeric match to value 1
• "weapon_smg1"; string match to weapon_smg1 string
• "[npcstate::idle]"; match enumeration by looking up numeric value
• ">0"; match if greater than zero
• ">10,<=50"; match if greater than ten and less than or equal to 50
• ">0,<[npcstate::alert]"; match if greater than zer and les then value of enumeration for alert
• "!=0"; match if not equal to zero

other options

• weight nnn: floating point weighting for score assuming criteria match (default value 1.0)

• required: if a rule has one or more criteria with the required flag set, then if any such criteria fail, the entire rule receives a score of zero

See also

• List of HL2 criteria