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FO01 NPC Tandi G
FO01 NPC Tandi N
FO01 NPC Tandi B
Tandi's good, neutral and bad reaction images

Character reaction is a game mechanic in Fallout and Fallout 2. It reflects general attitude of an NPC towards the protagonist. The reaction can be good, neutral of bad.

Reaction value is composed of two components: base reaction and static reaction. Base reaction is preserved between dialogues while static reaction isn't.

Initial reactionEdit

Initial reaction is calculated from multiple factors:

Characters marked as "evil" have their reaction modifiers from karma-based titles (except Childkiller) and reputation backwards. Slaver title's effect and its sign rather depends on what the character thinks of slavers.

In only a few locations are appropriate characters marked as "evil" for this purpose in Fallout 2:

ChangingEdit

Reaction is changed by saying nice or mean things to the character by choosing appropriate dialogue options. For talking heads, the character's expression visibly changes.

There are also scripted changes by various amounts.

Under the hoodEdit

It's an integer from -100 to 100, with 25 and higher for Good, -25 or lower for Bad and Neutral for in-between. There's also a separate variable from -4 to 4 holding just the level where +2 is good and -2 is bad. After one is changed, the other is converted to reflect the result. Both variables are recalculated each time a conversation starts, only the base reaction is saved.

Base reaction:

  • On the first conversation: each point of the player character's Charisma over NPC's: +5 (if higher) / -5 (if lower)
  • After that, it's only altered by scripted changes

Initial static reaction:

Changes:

  • The dialogue options adjust the level by two.
  • There are also scripted changes by various amounts as well as direct assignments. They can affect either base reaction or the effective reaction.

EffectsEdit

Compared to how much thought was put into the reaction system, it's largely unused. Only for a few NPCs does it affect the course of the dialogue (39 in Fallout 2, to be exact). The most prominent effect it has on gameplay is affecting barter prices (e.g. in one test, for Chitsa (CH 10 and Sex Appeal), Leather armor was offered for $1,218 by Maida Buckner and for $1,190 by Sajag).

BugsEdit

Reaction-related macros are heavily bugged and their logic is inconsistent. E.g.:

  • Macros setting the effective level actually have no effect
  • Most macros, including the one calculating the initial reaction, do not properly synchronize all three reaction variables (base reaction, effective reaction, effective level)
  • The macro converting value to level uses effective reaction while the one converting level to value rather sets base reaction
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