5 files changed, 63 insertions, 3 deletions

diff --git a/src/input_common/mouse/mouse_input.cpp b/src/input_common/mouse/mouse_input.cpp
index 10786a541..b864d26f2 100644
--- a/src/input_common/mouse/mouse_input.cpp
+++ b/src/input_common/mouse/mouse_input.cpp
@@ -2,6 +2,7 @@
 // Licensed under GPLv2+
 // Refer to the license.txt file included.
 
+#include "core/settings.h"
 #include "input_common/mouse/mouse_input.h"
 
 namespace MouseInput {
@@ -32,10 +33,18 @@ void Mouse::UpdateThread() {
             info.motion.UpdateOrientation(update_time * 1000);
             info.tilt_speed = 0;
             info.data.motion = info.motion.GetMotion();
+            if (Settings::values.mouse_panning) {
+                info.last_mouse_change *= 0.96f;
+                info.data.axis = {static_cast<int>(16 * info.last_mouse_change.x),
+                                  static_cast<int>(16 * -info.last_mouse_change.y)};
+            }
         }
         if (configuring) {
             UpdateYuzuSettings();
         }
+        if (mouse_panning_timout++ > 20) {
+            StopPanning();
+        }
         std::this_thread::sleep_for(std::chrono::milliseconds(update_time));
     }
 }
@@ -65,8 +74,45 @@ void Mouse::PressButton(int x, int y, int button_) {
     mouse_info[button_index].data.pressed = true;
 }
 
-void Mouse::MouseMove(int x, int y) {
+void Mouse::StopPanning() {
     for (MouseInfo& info : mouse_info) {
+        if (Settings::values.mouse_panning) {
+            info.data.axis = {};
+            info.tilt_speed = 0;
+            info.last_mouse_change = {};
+        }
+    }
+}
+
+void Mouse::MouseMove(int x, int y, int center_x, int center_y) {
+    for (MouseInfo& info : mouse_info) {
+        if (Settings::values.mouse_panning) {
+            auto mouse_change =
+                (Common::MakeVec(x, y) - Common::MakeVec(center_x, center_y)).Cast<float>();
+            mouse_panning_timout = 0;
+
+            if (mouse_change.y == 0 && mouse_change.x == 0) {
+                continue;
+            }
+            const auto mouse_change_length = mouse_change.Length();
+            if (mouse_change_length < 3.0f) {
+                mouse_change /= mouse_change_length / 3.0f;
+            }
+
+            info.last_mouse_change = (info.last_mouse_change * 0.91f) + (mouse_change * 0.09f);
+
+            const auto last_mouse_change_length = info.last_mouse_change.Length();
+            if (last_mouse_change_length > 8.0f) {
+                info.last_mouse_change /= last_mouse_change_length / 8.0f;
+            } else if (last_mouse_change_length < 1.0f) {
+                info.last_mouse_change = mouse_change / mouse_change.Length();
+            }
+
+            info.tilt_direction = info.last_mouse_change;
+            info.tilt_speed = info.tilt_direction.Normalize() * info.sensitivity;
+            continue;
+        }
+
         if (info.data.pressed) {
             const auto mouse_move = Common::MakeVec(x, y) - info.mouse_origin;
             const auto mouse_change = Common::MakeVec(x, y) - info.last_mouse_position;
diff --git a/src/input_common/mouse/mouse_input.h b/src/input_common/mouse/mouse_input.h
index 58803c1bf..46aa676c1 100644
--- a/src/input_common/mouse/mouse_input.h
+++ b/src/input_common/mouse/mouse_input.h
@@ -57,8 +57,10 @@ public:
      * Signals that mouse has moved.
      * @param x the x-coordinate of the cursor
      * @param y the y-coordinate of the cursor
+     * @param center_x the x-coordinate of the middle of the screen
+     * @param center_y the y-coordinate of the middle of the screen
      */
-    void MouseMove(int x, int y);
+    void MouseMove(int x, int y, int center_x, int center_y);
 
     /**
      * Signals that a motion sensor tilt has ended.
@@ -74,11 +76,13 @@ public:
 private:
     void UpdateThread();
     void UpdateYuzuSettings();
+    void StopPanning();
 
     struct MouseInfo {
         InputCommon::MotionInput motion{0.0f, 0.0f, 0.0f};
         Common::Vec2<int> mouse_origin;
         Common::Vec2<int> last_mouse_position;
+        Common::Vec2<float> last_mouse_change;
         bool is_tilting = false;
         float sensitivity{0.120f};
 
@@ -94,5 +98,6 @@ private:
     Common::SPSCQueue<MouseStatus> mouse_queue;
     bool configuring{false};
     bool update_thread_running{true};
+    int mouse_panning_timout{};
 };
 } // namespace MouseInput
diff --git a/src/input_common/mouse/mouse_poller.cpp b/src/input_common/mouse/mouse_poller.cpp
index 3d799b293..bb56787ee 100644
--- a/src/input_common/mouse/mouse_poller.cpp
+++ b/src/input_common/mouse/mouse_poller.cpp
@@ -6,6 +6,7 @@
 #include <utility>
 
 #include "common/threadsafe_queue.h"
+#include "core/settings.h"
 #include "input_common/mouse/mouse_input.h"
 #include "input_common/mouse/mouse_poller.h"
 
@@ -71,7 +72,7 @@ public:
         std::lock_guard lock{mutex};
         const auto axis_value =
             static_cast<float>(mouse_input->GetMouseState(button).axis.at(axis));
-        return axis_value / (100.0f * range);
+        return axis_value * Settings::values.mouse_panning_sensitivity / (100.0f * range);
     }
 
     std::pair<float, float> GetAnalog(u32 analog_axis_x, u32 analog_axis_y) const {
diff --git a/src/input_common/sdl/sdl_impl.cpp b/src/input_common/sdl/sdl_impl.cpp
index f67de37e3..a88ae452f 100644
--- a/src/input_common/sdl/sdl_impl.cpp
+++ b/src/input_common/sdl/sdl_impl.cpp
@@ -717,6 +717,13 @@ SDLState::SDLState() {
     if (SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1") == SDL_FALSE) {
         LOG_ERROR(Input, "Failed to set hint for background events with: {}", SDL_GetError());
     }
+// these hints are only defined on sdl2.0.9 or higher
+#if SDL_VERSION_ATLEAST(2, 0, 9)
+#if !SDL_VERSION_ATLEAST(2, 0, 12)
+    // There are also hints to toggle the individual drivers if needed.
+    SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI, "0");
+#endif
+#endif
 
     SDL_AddEventWatch(&SDLEventWatcher, this);
 
diff --git a/src/input_common/settings.h b/src/input_common/settings.h
index 75486554b..a59f5d461 100644
--- a/src/input_common/settings.h
+++ b/src/input_common/settings.h
@@ -340,6 +340,7 @@ enum class ControllerType {
     LeftJoycon,
     RightJoycon,
     Handheld,
+    GameCube,
 };
 
 struct PlayerInput {