[Core] Mouse key kinetic mode fix (#17176)

Co-authored-by: Drashna Jaelre <drashna@live.com>

3 files changed, 21 insertions, 16 deletions

diff --git a/docs/feature_mouse_keys.md b/docs/feature_mouse_keys.md
index 905da36e43..8e474c4245 100644
--- a/docs/feature_mouse_keys.md
+++ b/docs/feature_mouse_keys.md
@@ -87,9 +87,9 @@ This is an extension of the accelerated mode. The kinetic mode uses a quadratic
 |`MK_KINETIC_SPEED`                    |undefined|Enable kinetic mode                                            |
 |`MOUSEKEY_DELAY`                      |5        |Delay between pressing a movement key and cursor movement      |
 |`MOUSEKEY_INTERVAL`                   |10       |Time between cursor movements in milliseconds                  |
-|`MOUSEKEY_MOVE_DELTA`                 |5        |Step size for accelerating from initial to base speed          |
+|`MOUSEKEY_MOVE_DELTA`                 |16       |Step size for accelerating from initial to base speed          |
 |`MOUSEKEY_INITIAL_SPEED`              |100      |Initial speed of the cursor in pixel per second                |
-|`MOUSEKEY_BASE_SPEED`                 |1000     |Maximum cursor speed at which acceleration stops               |
+|`MOUSEKEY_BASE_SPEED`                 |5000     |Maximum cursor speed at which acceleration stops               |
 |`MOUSEKEY_DECELERATED_SPEED`          |400      |Decelerated cursor speed                                       |
 |`MOUSEKEY_ACCELERATED_SPEED`          |3000     |Accelerated cursor speed                                       |
 |`MOUSEKEY_WHEEL_INITIAL_MOVEMENTS`    |16       |Initial number of movements of the mouse wheel                 |
@@ -100,7 +100,7 @@ This is an extension of the accelerated mode. The kinetic mode uses a quadratic
 Tips:
 
 * The smoothness of the cursor movement depends on the `MOUSEKEY_INTERVAL` setting. The shorter the interval is set the smoother the movement will be.  Setting the value too low makes the cursor unresponsive.  Lower settings are possible if the micro processor is fast enough. For example: At an interval of `8` milliseconds, `125` movements per second will be initiated.  With a base speed of `1000` each movement will move the cursor by `8` pixels.
-* Mouse wheel movements are implemented differently from cursor movements. While it's okay for the cursor to move multiple pixels at once for the mouse wheel this would lead to jerky movements. Instead, the mouse wheel operates at step size `1`. Setting mouse wheel speed is done by adjusting the number of wheel movements per second.
+* Mouse wheel movements are implemented differently from cursor movements. While it's okay for the cursor to move multiple pixels at once for the mouse wheel this would lead to jerky movements. Instead, the mouse wheel operates at step size `2`. Setting mouse wheel speed is done by adjusting the number of wheel movements per second.
 
 ### Constant mode
 
diff --git a/quantum/mousekey.c b/quantum/mousekey.c
index 64d0e66682..81e887d529 100644
--- a/quantum/mousekey.c
+++ b/quantum/mousekey.c
@@ -66,11 +66,18 @@ uint8_t mk_time_to_max = MOUSEKEY_TIME_TO_MAX;
 /* milliseconds between the initial key press and first repeated motion event (0-2550) */
 uint8_t mk_wheel_delay = MOUSEKEY_WHEEL_DELAY / 10;
 /* milliseconds between repeated motion events (0-255) */
-uint8_t mk_wheel_interval    = MOUSEKEY_WHEEL_INTERVAL;
+#    ifdef MK_KINETIC_SPEED
+float mk_wheel_interval = 1000.0f / MOUSEKEY_WHEEL_INITIAL_MOVEMENTS;
+#    else
+uint8_t mk_wheel_interval = MOUSEKEY_WHEEL_INTERVAL;
+#    endif
 uint8_t mk_wheel_max_speed   = MOUSEKEY_WHEEL_MAX_SPEED;
 uint8_t mk_wheel_time_to_max = MOUSEKEY_WHEEL_TIME_TO_MAX;
 
 #    ifndef MK_COMBINED
+#        ifndef MK_KINETIC_SPEED
+
+/* Default accelerated mode */
 
 static uint8_t move_unit(void) {
     uint16_t unit;
@@ -108,8 +115,7 @@ static uint8_t wheel_unit(void) {
     return (unit > MOUSEKEY_WHEEL_MAX ? MOUSEKEY_WHEEL_MAX : (unit == 0 ? 1 : unit));
 }
 
-#    else /* #ifndef MK_COMBINED */
-#        ifdef MK_KINETIC_SPEED
+#        else /* #ifndef MK_KINETIC_SPEED */
 
 /*
  * Kinetic movement  acceleration algorithm
@@ -147,27 +153,27 @@ static uint8_t move_unit(void) {
     return speed > MOUSEKEY_MOVE_MAX ? MOUSEKEY_MOVE_MAX : speed;
 }
 
-float mk_wheel_interval = 1000.0f / MOUSEKEY_WHEEL_INITIAL_MOVEMENTS;
-
 static uint8_t wheel_unit(void) {
     float speed = MOUSEKEY_WHEEL_INITIAL_MOVEMENTS;
 
     if (mousekey_accel & ((1 << 0) | (1 << 2))) {
         speed = mousekey_accel & (1 << 2) ? MOUSEKEY_WHEEL_ACCELERATED_MOVEMENTS : MOUSEKEY_WHEEL_DECELERATED_MOVEMENTS;
-    } else if (mousekey_repeat && mouse_timer) {
+    } else if (mousekey_wheel_repeat && mouse_timer) {
         if (mk_wheel_interval != MOUSEKEY_WHEEL_BASE_MOVEMENTS) {
             const float time_elapsed = timer_elapsed(mouse_timer) / 50;
             speed                    = MOUSEKEY_WHEEL_INITIAL_MOVEMENTS + 1 * time_elapsed + 1 * 0.5 * time_elapsed * time_elapsed;
         }
         speed = speed > MOUSEKEY_WHEEL_BASE_MOVEMENTS ? MOUSEKEY_WHEEL_BASE_MOVEMENTS : speed;
     }
-
     mk_wheel_interval = 1000.0f / speed;
 
-    return 1;
+    return (uint8_t)speed > MOUSEKEY_WHEEL_INITIAL_MOVEMENTS ? 2 : 1;
 }
 
-#        else /* #ifndef MK_KINETIC_SPEED */
+#        endif /* #ifndef MK_KINETIC_SPEED */
+#    else      /* #ifndef MK_COMBINED */
+
+/* Combined mode */
 
 static uint8_t move_unit(void) {
     uint16_t unit;
@@ -205,8 +211,7 @@ static uint8_t wheel_unit(void) {
     return (unit > MOUSEKEY_WHEEL_MAX ? MOUSEKEY_WHEEL_MAX : (unit == 0 ? 1 : unit));
 }
 
-#        endif /* #ifndef MK_KINETIC_SPEED */
-#    endif     /* #ifndef MK_COMBINED */
+#    endif /* #ifndef MK_COMBINED */
 
 void mousekey_task(void) {
     // report cursor and scroll movement independently
diff --git a/quantum/mousekey.h b/quantum/mousekey.h
index 03da5f282a..d44f47fc1f 100644
--- a/quantum/mousekey.h
+++ b/quantum/mousekey.h
@@ -39,7 +39,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #        ifndef MK_KINETIC_SPEED
 #            define MOUSEKEY_MOVE_DELTA 8
 #        else
-#            define MOUSEKEY_MOVE_DELTA 5
+#            define MOUSEKEY_MOVE_DELTA 16
 #        endif
 #    endif
 #    ifndef MOUSEKEY_WHEEL_DELTA
@@ -82,7 +82,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #        define MOUSEKEY_INITIAL_SPEED 100
 #    endif
 #    ifndef MOUSEKEY_BASE_SPEED
-#        define MOUSEKEY_BASE_SPEED 1000
+#        define MOUSEKEY_BASE_SPEED 5000
 #    endif
 #    ifndef MOUSEKEY_DECELERATED_SPEED
 #        define MOUSEKEY_DECELERATED_SPEED 400