add pitch_scale for pid controller

src/action/components.rs

@@ -85,7 +85,7 @@ impl Default for CatControllerState {
             pitch_prev: Default::default(),
             decay_factor: 0.99,
             roll_limit: 1.5,
-            pitch_limit: 0.8,
+            pitch_limit: 0.2,
         }
     }
 }

src/action/systems.rs

@@ -16,6 +16,8 @@ use crate::{
     input::InputState,
 };
 
+const PITCH_SCALE: f32 = 0.2;
+
 /// Disable gravity in Rapier.
 pub(super) fn zero_gravity(mut config: ResMut<RapierConfiguration>) {
     config.gravity = Vec3::ZERO;
@@ -46,7 +48,7 @@ pub(super) fn falling_cat(
     let wright = xform.forward().cross(wup).normalize();
 
     let roll_error = wright.dot(bike_up);
-    let pitch_error = wup.dot(xform.back());
+    let pitch_error = wup.dot(xform.back()) * PITCH_SCALE;
 
     // only try to correct roll if we're not totally vertical
     if pitch_error.abs() < 0.8 {