Refactor for nice gain offset

1 files changed, 5 insertions, 3 deletions

diff --git a/common/accel-base.hpp b/common/accel-base.hpp
index b42f23d..714162f 100644
--- a/common/accel-base.hpp
+++ b/common/accel-base.hpp
@@ -5,6 +5,7 @@ namespace rawaccel {
     /// <summary> Struct to hold arguments for an acceleration function. </summary>
     struct accel_args {
         double offset = 0;
+        double legacy_offset = 0;
         double accel = 0;
         double limit = 2;
         double exponent = 2;
@@ -19,6 +20,7 @@ namespace rawaccel {
 
     template <typename Func>
     struct accel_val_base {
+        bool legacy_offset = false;
         double offset = 0;
         double weight = 1;
         Func fn;
@@ -31,15 +33,15 @@ namespace rawaccel {
     struct additive_accel : accel_val_base<Func> {
 
         additive_accel(const accel_args& args) : accel_val_base(args) {
-            offset = args.offset;
+            legacy_offset = args.offset <= 0 && args.legacy_offset > 0;
+            offset = legacy_offset ? args.legacy_offset : args.offset;
             weight = args.weight;
         }
 
         inline double operator()(double speed) const {
             double offset_speed = speed - offset;
-            return offset_speed > 0 ? 1 + fn(offset_speed) * weight : 1;
+            return offset_speed > 0 ? ( legacy_offset ? 1 + fn.legacy_offset(offset_speed) * weight : 1 + fn(offset_speed) ) : 1;
         }
-
     };
 
     template <typename Func>