AI Skill – Arma 3

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AI skill/level/final skill

AI Skill

The AI is characterized by a set of sub-skills. The final AI skill is unfluenced by several factors. Additionally each sub-skill is then interpolated with the values set in CfgAISkill.

Changing AI Skill

Players

Difficulty Menu

• As player one can only influence AI skill by changing the global skill settings Skill and Precision. One has also the option to choose one of the default AI Levels.
  • Skill: Influences multiple sub-skills related to the AIs "intelligence". If the value is set too low, the AI will be dumb.
  • Precision: Influences sub-skills related to AIs precision. If the value is set too high, the AI will have a super human precision. Lower values result mostly in interesting fire fights.

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Changing the AI difficulty settings during a scenario will have no effect until the scenario is restarted.

Scenario Designers

Skill setting in Eden Editor

• A scenario designer has four ways to influence the AI skill:
  • By changing the skill slider in Eden Editor for each individual unit.
  • By using functions like BIS_fnc_EXP_camp_setSkill or BIS_fnc_EXP_camp_dynamicAISkill to set the skill of multiple AI entities at once.
  • By using commands like setSkill.
  • By using the Set Skill module which allows to change the skill of AI entities for example when a trigger was activated.

Modders

• A modder can influence the AI skill by overwriting CfgAISkill.

Server Admins

• Server admins can change the AI skill by changing the aiLevelPreset config parameter found in server config. See Arma 3 Server Profile for more information.

Sub-Skills

Sub-skills are a set of parameters ultimately defining the individual AI unit performance in the game.

Sub-Skill	Effect	Influence
aimingAccuracy	Affects how well the AI can lead a target Affects how accurately the AI estimate range and calculates bullet drop Affects how well the AI compensates for weapon dispersion Affects how much the AI will know to compensate for recoil Affects how certain the AI must be about its aim on target before opening fire	Higher value means the AI can lead a target better Higher value means the Ai can estimate range and calculate bullet drop more precicely Higher value means the AI can compensate weapon dispersion better Higher value means the AI can control the recoil better Higher value means the AI needs to now less to open up fire
aimingSpeed	Affects how quickly the AI can rotate and stabilize its aim	Higher value means the AI can rotate and stabilize its aim faster
commanding	Affects how quickly recognized targets are shared with the group	Higher value means the AI can report targets faster
courage	Affects unit's subordinates' morale	Higher value means the AI has got more courage
endurance	Disabled in Arma 3	Disabled
general	Raw "Skill", value is distributed to sub-skills unless defined otherwise. Affects the AI's decision making.	?
reloadSpeed	Affects the delay between switching or reloading a weapon	Higher value means the AI can switch or reload weapons faster
spotDistance	Affects the AI ability to spot targets within it is visual or audible range Affects the accuracy of the information	Higher value means the AI is better at spotting targets Higher value means the AI will collect information about targets more precisely
spotTime	Affects how quick the AI react to death, damage or observing an enemy	Higher value means the AI will react faster to death, damage or enemies
aimingShake	Affects how steadily the AI can hold a weapon	Higher value means the AI will be more precise

CfgAISkill

CfgAISkill is a set of arrays, related to Sub-Skills, defining the interpolation curve of each of the sub-skill. They can be changed by a mod for example.

Example

Interpolation with vanilla A3 CfgAISkill

In { w, x, y, z } value from (w,y) gets interpolated into (x,z)

• spotDistance[] = { 0, 0.2, 1, 0.4 };
  • Value in a range 0-1 will change into value in a range 0.2-0.4.
• _unit setSkill ["spotDistance", 0.5];
  • Results in _unit skill "spotDistance" returning 0.3

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More than 2 pairs of defining values can be used (minimum is 2 pairs). The values are used to interpolate on run-time, so even after setting sub-skill by script command it will be interpolated and bound by this array.

Arma 3 Defaults

Table

Sub-Skill	minInputSkillLimit (w)	resultingSubSkillLowerBoundary (x)	maxInputSkillLimit (y)	resultingSubSkillLowerBoundary (z)
aimingAccuracy	0	0	1	1
aimingShake	0	0	1	1
aimingSpeed	0	0.5	1	1
commanding	0	0	1	1
courage	0	0	1	1
endurance	0	0	1	1
general	0	0	1	1
reloadSpeed	0	0	1	1
spotDistance	0	0	1	1
spotTime	0	0	1	1

Config

Show text

aimingAccuracy[] = { 0, 0, 1, 1 };
aimingShake[] = { 0, 0, 1, 1 };
aimingSpeed[] = { 0, 0.5, 1, 1 };
commanding[] = { 0, 0, 1, 1 };
courage[] = { 0, 0, 1, 1 };
endurance[] = { 0, 0, 1, 1 }; // disabled in Arma 3
general[] = { 0, 0, 1, 1 };
reloadSpeed[] = { 0, 0, 1, 1 };
spotDistance[] = { 0, 0, 1, 1 };
spotTime[] = { 0, 0, 1, 1 };

Related Commands

• skill
• setSkill
• skillFinal
• allowFleeing

External Links

• BIS Forums AI Skill
• AI Facts & Myths Compilation List