From bfa6a27c46c35ec50d4fdf780e6828232de8cbe2 Mon Sep 17 00:00:00 2001
From: Kyle Carow <Kyle.Carow@nrel.gov>
Date: Fri, 4 Aug 2023 16:30:21 -0600
Subject: [PATCH] add defaults to regen_a and regen_b for serde

---
 rust/fastsim-core/src/vehicle.rs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/rust/fastsim-core/src/vehicle.rs b/rust/fastsim-core/src/vehicle.rs
index 21b6c8c7..2ddaa84d 100644
--- a/rust/fastsim-core/src/vehicle.rs
+++ b/rust/fastsim-core/src/vehicle.rs
@@ -358,10 +358,10 @@ pub struct RustVehicle {
     #[serde(skip)]
     pub fc_perc_out_array: Vec<f64>,
     #[doc(hidden)]
-    #[serde(skip)]
+    #[serde(default = "RustVehicle::default_regen_a")]
     pub regen_a: f64,
     #[doc(hidden)]
-    #[serde(skip)]
+    #[serde(default = "RustVehicle::default_regen_b")]
     pub regen_b: f64,
     #[doc(hidden)]
     #[serde(skip)]
@@ -549,6 +549,13 @@ impl RustVehicle {
             * self.props.a_grav_mps2;
     }
 
+    const fn default_regen_a() -> f64 {
+        500.0
+    }
+    const fn default_regen_b() -> f64 {
+        0.99
+    }
+
     pub fn max_regen_kwh(&self) -> f64 {
         0.5 * self.veh_kg * (27.0 * 27.0) / (3_600.0 * 1_000.0)
     }