1 files changed, 98 insertions, 0 deletions
diff --git a/keyboards/splitkb/kyria/keymaps/gotham/thumbstick.h b/keyboards/splitkb/kyria/keymaps/gotham/thumbstick.h
new file mode 100644
index 0000000000..aff939c746
--- /dev/null
+++ b/keyboards/splitkb/kyria/keymaps/gotham/thumbstick.h
@@ -0,0 +1,98 @@
+#pragma once
+
+typedef enum {
+    THUMBSTICK_MODE_MOUSE = 0,
+    THUMBSTICK_MODE_ARROWS,
+    THUMBSTICK_MODE_SCROLL,
+    _THUMBSTICK_MODE_LAST  // Do not use, except for looping through enum values
+} thumbstick_mode_t;
+
+// Parameters
+#define THUMBSTICK_DEAD_ZONE 90   // Values below this are ignored (deadzone)
+#define THUMBSTICK_FINE_ZONE 180  // Values below this enable fine movement
+
+#define THUMBSTICK_MODE THUMBSTICK_MODE_MOUSE
+#define THUMBSTICK_SPEED 256
+#define THUMBSTICK_FINE_SPEED 96
+#define THUMBSTICK_SCROLL_SPEED 1
+
+#define THUMBSTICK_EIGHT_AXIS true
+#define THUMBSTICK_AXIS_SEPARATION 0.5f
+
+// Implicit and derived constants
+#define THUMBSTICK_TIMEOUT 10          // Mouse report throttling time in ms
+#define THUMBSTICK_SCROLL_TIMEOUT 200  // Mouse scroll throttling time in ms
+#define THUMBSTICK_RANGE_START 0
+#define THUMBSTICK_RANGE_STOP 1023
+#define THUMBSTICK_RANGE_CENTER (THUMBSTICK_RANGE_STOP - THUMBSTICK_RANGE_START + 1) / 2
+#define THUMBSTICK_RANGE_MOVEMENT (THUMBSTICK_RANGE_CENTER - THUMBSTICK_DEAD_ZONE)
+
+#include "timer.h"
+#include "analog.h"
+#include "split_util.h"
+#include "pointing_device.h"
+
+#if defined THUMBSTICK_DEBUG
+#    include "print.h"
+uint16_t rawX;
+uint16_t rawY;
+uint16_t distX;
+uint16_t distY;
+uint16_t thumbstickLogTimer;
+#endif
+
+typedef struct {
+    thumbstick_mode_t mode;
+    uint16_t          deadZone;
+    uint16_t          fineZone;
+    uint16_t          speed;
+    uint16_t          fineSpeed;
+    float             axisSeparation;
+    bool              eightAxis;
+} thumbstick_config_t;
+
+typedef struct {
+    int16_t x;
+    int16_t y;
+} thumbstick_vector_t;
+
+typedef struct {
+    bool up;
+    bool right;
+    bool down;
+    bool left;
+} thumbstick_direction_t;
+
+typedef struct {
+    thumbstick_config_t    config;
+    thumbstick_vector_t    vector;
+    thumbstick_direction_t direction;
+    thumbstick_direction_t lastDirection;
+    report_mouse_t         report;
+} thumbstick_state_t;
+
+uint16_t thumbstickTimer;
+uint16_t thumbstickScrollTimer;
+
+thumbstick_state_t thumbstick_state;
+
+void thumbstick_mode_set(thumbstick_mode_t mode);
+
+thumbstick_mode_t thumbstick_mode_get(void);
+
+void thumbstick_mode_cycle(bool reverse);
+
+void thumbstick_init(void);
+
+// Axis-level wrapper to read raw value, do logging and calculate speed
+int16_t thumbstick_get_component(uint8_t pin);
+
+// Get mouse speed
+int16_t thumbstick_get_mouse_speed(int16_t component);
+
+// Fix direction within one of 8 axes (or 4 if 8-axis is disabled)
+thumbstick_direction_t thumbstick_get_discretized_direction(thumbstick_vector_t vector, float axisSeparation, bool eightAxis);
+
+void thumbstick_process(void);
+
+void update_keycode_status(uint16_t keycode, bool last, bool current);