Monster AI

  • Monster AI scripts must be saved in the project folder/ServerScripts with a file name like Hello.lua to be read.

script
explanation

enemy

Represents the ScriptUnit of a monster.

ai

Represents an AI behavior to be executed in ScriptEnemyUnitAI.

event

Check the logic to be executed.

AI_INIT(-1)

First run when registering monster AI

AI_UPDATE(0)

Keep running every 2 seconds

AI_ATTACKED(1)

Runs once per attack

AI_DEAD(2)

Runs once on death

data

It can only be used when attacking, and when (event == 1), you can check damage, skill ID, and whether it is critical (true, false) information.

Example) Server script - Setting monster AI

 Server.SetMonsterAI(
        22, --Index of monsters to which AI will be applied
        function(enemy,ai,event,data)
        -- Runs when registering the first monster AI
        if(event == AI_INIT) then
                 ai.customData.test = 1;
        end
        if (event == AI_UPDATE) then
                --Returns the units that meet the condition among the units in the current field.
                --Example) Bring when there is an enemy with unit HP less than 100.
                --ai.SetTargetUnit(
                --        enemy.field.FindUnit(enemy.x, enemy.y, 200,
                --       function(u)
                --                return u.hp <= 100
                --        end
                --, 0,enemy))
                
                --Returns the unit that satisfies the smallest condition among the units in the current field.
                --Example) Bring the enemy with the lowest HP among the player units.
                --ai.SetTargetUnit(
                --        enemy.field.FindMinimumUnit(enemy.x, enemy.y, 200,
                --        function(u)
                --                return u.hp
                --        end
                --, 0,enemy))

                --Returns the unit that meets the largest condition among the units in the current field.
                --Example) Bring the enemy with the most HP among the player units.
                --ai.SetTargetUnit(
               --        enemy.field.FindMaximumUnit(enemy.x, enemy.y, 200,
                --        function(u)
                --               return u.hp
                --        end
                --, 0,enemy))
                
               --If no target is set, the closest player is targeted.
                if( ai.GetTargetUnit() == nil) then
                        ai.SetNearTarget(0,200)
                end
                
                --Set to null if there are no players on the map.
                if( enemy.field.playerCount <=0) then
                        ai.SetTargetUnit(nil)
                        
                --If the targeted player leaves the map, retarget.
                elseif(enemy.field.GetUnit(ai.GetTargetUnitID()) == nil) then
                        ai.SetNearTarget(0,200)
                end
                
                --If there is a target, attack in the direction of the target.
                ai.UseSkill(22);

                --Left attack
                ai.UseSkill(22,Point(-1,0))

                --Right attack
                ai.UseSkill(22,Point(1,0))

                --Attack from above
                ai.UseSkill(22,Point(0,1))

                --Downward attack
                ai.UseSkill(22,Point(0,-1))

                --Attack the location
                ai.UseSkillToPosition(24,Point(150,-150))
                
                --Exception handling when target is not found
                if(ai.GetTargetUnit() == nil) then
                        return
                end
                
                --Enable/disable tracking based on target's HP
                if(ai.GetTargetUnit().hp <=150) then
                        ai.SetFollowTarget(false)
                else
                        ai.SetFollowTarget(true)
               end
                
        end

       if (event == AI_ATTACKED) then
                enemy.Say('I was attacked. \nDamage: ' .. data.damage 
                .. '\nSkillID: '..data.skillDataID
                .. '\nWhether it is critical or not: '..(data.critical and 'true' or 'false'))
                
                --Exception handling when there is no unit attacking
                if(ai.GetAttackedUnit() == nil) then
                        return
               end
                 --Check the HP of the attacked enemy and change target if it is less than 100.
                if(ai.GetAttackedUnit().hp <= 100) then
                        ai.SetTargetUnit(ai.GetAttackedUnit()) 
                end

        end

        if (event == AI_DEAD) then
                Server.SendSay('dying')
                --Resurrect at a specific location after death
                enemy.RespawnAt(150,-150)
        end

end)

Example) Server script - Monster AI preemptive attack monster

PreviousUINextPet AI

Last updated