let's try this

Author: zkat

examples/dorf_hero/src/ai/scorers/enemy_distance.rs

@@ -20,7 +20,7 @@ impl ScorerBuilder for EnemyDistanceBuilder {
     fn build(&self, cmd: &mut Commands, scorer: Entity, _actor: Entity) {
         cmd.entity(scorer).insert(EnemyDistance {
             within: self.within,
-            evaluator: LinearEvaluator::new_ranged(0.0, self.within),
+            evaluator: LinearEvaluator::new_ranged(self.within, 0.0),
         });
     }
 }
@@ -47,7 +47,7 @@ pub fn enemy_distance(
             if let Ok(hero_pos) = hero_q.single() {
                 let distance = util::euclidean_distance(enemy_pos, hero_pos);
                 if distance <= enemy_distance.within {
-                    score.set(enemy_distance.evaluator.evaluate((distance - enemy_distance.within).abs()));
+                    score.set(enemy_distance.evaluator.evaluate(distance / enemy_distance.within));
                 } else {
                     score.set(0.0);
                 }
@@ -57,7 +57,7 @@ pub fn enemy_distance(
             for enemy_pos in enemy_q.iter() {
                 let distance = util::euclidean_distance(enemy_pos, hero_pos);
                 if distance <= enemy_distance.within {
-                    score.set(enemy_distance.evaluator.evaluate((distance - enemy_distance.within).abs()));
+                    score.set(enemy_distance.evaluator.evaluate(distance / enemy_distance.within));
                 } else {
                     score.set(0.0);
                 }

examples/dorf_hero/src/ai/scorers/fear_of_death.rs

@@ -21,7 +21,7 @@ pub struct FearOfDeathBuilder;
 impl ScorerBuilder for FearOfDeathBuilder {
     fn build(&self, cmd: &mut Commands, scorer: Entity, _actor: Entity) {
         cmd.entity(scorer).insert(FearOfDeath {
-            evaluator: PowerEvaluator::new(2.),
+            evaluator: PowerEvaluator::new_ranged(2., 1.0, 0.0),
         });
     }
 }
@@ -30,7 +30,7 @@ pub fn fear_of_death(hp_q: Query<&Hp>, mut scorer_q: Query<(&Actor, &mut Score,
     for (Actor(actor), mut score, fear) in scorer_q.iter_mut() {
         if let Ok(hp) = hp_q.get(*actor) {
             let perc = hp.current as f32 / hp.max as f32;
-            score.set(fear.evaluator.evaluate((perc - 1.).abs()));
+            score.set(fear.evaluator.evaluate(perc));
         }
     }
 }