From 54fcbd44166f14aace5e1113d70ea3c105524a26 Mon Sep 17 00:00:00 2001
From: ceski <56656010+ceski-1@users.noreply.github.com>
Date: Mon, 14 Oct 2024 20:47:26 -0700
Subject: [PATCH] Add gyro invert turn/look options (#1963)

* Don't invert local lean by default

* Add gyro invert turn/look options
---
 src/i_gyro.c | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/src/i_gyro.c b/src/i_gyro.c
index 309aad73..b83fb2fe 100644
--- a/src/i_gyro.c
+++ b/src/i_gyro.c
@@ -97,6 +97,8 @@ static int gyro_accel_max_threshold;
 static int gyro_smooth_threshold;
 static int gyro_smooth_time;
 static int gyro_tightening;
+static boolean gyro_invert_turn;
+static boolean gyro_invert_look;
 static fixed_t gyro_calibration_a;
 static fixed_t gyro_calibration_x;
 static fixed_t gyro_calibration_y;
@@ -311,12 +313,29 @@ void I_CalcGyroAxes(boolean strafe)
 {
     if (GyroActive())
     {
-        gyro_axes[GYRO_TURN] = !strafe ? RAD2TIC(gyro_axes[GYRO_TURN]) : 0.0f;
+        if (!strafe)
+        {
+            gyro_axes[GYRO_TURN] = RAD2TIC(gyro_axes[GYRO_TURN]);
+
+            if (gyro_invert_turn)
+            {
+                gyro_axes[GYRO_TURN] *= -1.0f;
+            }
+        }
+        else
+        {
+            gyro_axes[GYRO_TURN] = 0.0f;
+        }
 
         if (padlook)
         {
             gyro_axes[GYRO_LOOK] = RAD2TIC(gyro_axes[GYRO_LOOK]);
 
+            if (gyro_invert_look)
+            {
+                gyro_axes[GYRO_LOOK] *= -1.0f;
+            }
+
             if (correct_aspect_ratio)
             {
                 gyro_axes[GYRO_LOOK] /= 1.2f;
@@ -516,7 +535,7 @@ static void ApplyGyroSpace_Skip(void)
 
 static void ApplyGyroSpace_LocalLean(void)
 {
-    motion.gyro.y = -motion.gyro.z;
+    motion.gyro.y = motion.gyro.z;
 }
 
 static void ApplyGyroSpace_PlayerTurn(void)
@@ -829,6 +848,10 @@ void I_BindGyroVaribales(void)
     BIND_NUM(gyro_tightening, 30, 0, 100,
         "Gyro steadying: tightening threshold "
         "(0 = Off; 100 = 10.0 degrees/second)");
+    BIND_BOOL(gyro_invert_turn, false,
+        "Invert gyro turn axis");
+    BIND_BOOL(gyro_invert_look, false,
+        "Invert gyro look axis");
 
     BIND_NUM(gyro_calibration_a, 0, UL, UL, "Accelerometer calibration");
     BIND_NUM(gyro_calibration_x, 0, UL, UL, "Gyro calibration (x-axis)");