Unit flags — arknights

Unit flags are variables used in Arknights to provide a unit with properties that affects their behavior in-game.

AbnormalFlag

ID	Code and explanation	Example
0	`STUNNED` See Stun.	–
1	`SP_RECOVER_STOPPED` Prevents the unit from generating SP for their skill.	Duelist Defenders
2	`TARGET_FREE` Prevents the unit from being targeted by enemies.	Manticore's Hidden Killer
3	`BLOCK_FREE` Prevents the unit from being blocked by friendly units.	Wraiths
4	`HIDDEN` The unit will not be shown on the map and cannot be targeted by attacks/abilities.	–
5	`INVINCIBLE` The unit cannot be attacked/targeted by abilities and takes no damage at all.	Certain boss enemies when reviving
6	`UNDEADABLE` The unit cannot be knocked out or defeated; any damage or HP loss that would do so will leave the unit with at least 1 HP.	Sarkaz Sentinels
7	`HEAL_FREE` The unit cannot be targeted by active HP restoration (which would show the value, e.g. Medics' healing).	Musha Guards
8	`UNBALANCE_IMMUNE` The unit is unaffected by Shift effects.	Awaken
9	`INVISIBILITY` See Invisible.	–
10	`UNUSED_PLACEHOLDER_1` Unused	–
11	`DISARMED` Prevents the unit from attacking unless if they cannot be targeted.	Degenbrecher's Momentum Murder
12	`SILENCED` See Silence (debuff).	–
13	`UNMOVABLE` Prevents the unit from moving.	Bind
14	`UNUSED_PLACEHOLDER_2` Unused	–
15	`ALLY_TARGET_FREE` Prevents the unit from being targeted by friendly units.	Jammers
16	`FROZEN` See Freeze.	–
17	`CAMOUFLAGE` See Camouflage.	–
18	`FORCE_DISARMED` Prevents the unit from attacking.	Inactive L-44 Gramophones
19	`STUNNED_NO_AMPLIFY_DAMAGE` Same as `STUNNED`, but will not be subjected to W's Insult to Injury.	–
20	`DISABLE_COMBAT` The unit can neither attack nor be blocked.	Critically Wounded
21	`ELEMENT_FREE_ALL` The unit will take no Elemental Damage build-up at all.	–
22	`UNMOVABLE_PRIVATE` Similar to `UNMOVABLE`.	–
23	`COLD` See Cold.	–
24	`SKILL_NOT_ACTIVATABLE` Prevents the unit from activating their skill.	Necrosis Damage
25	`LEVITATE` See Levitate.	–
26	`DURANCE` Prevents the unit from being relieved (only in Stationary Security Service).	Crude Spheres
27	`NOT_WITHDRAWABLE` Prevents the unit from being retreated.	Zaaro, "Signore dei Lupi"'s Hemolytic Horror
28	`OUT_OF_GROUND` The unit is considered to be outside of the map and disjoints any projectiles targeting them.	The Last Steam Knight's Unto My Last Breath

AbnormalCombo

ID	Code and explanation	Example
0	`SLEEPING` `STUNNED_NO_AMPLIFY_DAMAGE` + `INVINCIBLE` + `BLOCK_FREE`	Sleep
1	`SHELTERING` `FORCE_DISARM` + `INVINCIBLE` + `BLOCK_FREE`	The first stage of Mudrock's Bloodline of Desecrated Earth

AbnormalImmune and AbnormalComboImmune

A unit with an AbnormalImmune flag will become unaffected by the corresponding AbnormalFlag, but the flag itself will not be removed. If the AbnormalImmune effect wears off, the AbnormalFlag will take effect again if it is still present. One example of this would be Operators that can temporarily reveal Invisible enemies in range, who will lose their invisibility but regain it once they exit the operator's range.

AbnormalComboImmune is functionally identical to AbnormalImmune, but used for AbnormalCombo flags instead. An example of this is Sleep immunity.

All units utilize several boolean variables for debuff immunity that determine if the unit is naturally immune to the corresponding status. If the variable is set to TRUE, then the unit will gain the corresponding immunity flag when spawning.

stunImmune: Blocks STUNNED.
silenceImmune: Blocks SILENCED.
sleepImmune: Blocks SLEEPING.
freezeImmune: Blocks FROZEN.
levitateImmune: Blocks LEVITATE.

AbnormalAnti

A unit with an AbnormalAnti flag will immediately clear the status conferring the corresponding AbnormalFlag on themselves, and prevent the unit from gaining that effect for the lifetime of the flag. This is distinct from AbnormalImmune in that it affects the status that carries the corresponding flag, but not the flag itself.

AbnormalFlagMask

A method used by the game to consolidate all of the unit flags carried by a status into a single value.