more precise mouse gamepad movement

keymapper/dev/injector.py

@@ -293,54 +293,52 @@ class KeycodeInjector:
             keymapper_device.device.path, keymapper_device.fd
         )
 
-        newest_abs_event = None
-        abs_x = None
-        abs_y = None
+        self.abs_x = 0
+        self.abs_y = 0
 
         # events only take ints, so a movement of 0.3 needs to add up to
         # 1.2 to affect the cursor.
-        pending_x_rel = 0
-        pending_y_rel = 0
+        self.pending_x_rel = 0
+        self.pending_y_rel = 0
 
         async def spam_mouse_movements():
+            # TODO get absinfo beforehand
+            max_value = 32767
+            max_speed = ((max_value ** 2) * 2) ** 0.5
             while True:
-                # TODO get absinfo beforehand
-                max_value = 32767
-
-                if abs_y is not None and abs_x is not None:
-                    speed = (abs_x ** 2 + abs_y ** 2) ** 0.5
-                    max_speed = ((max_value ** 2) * 2) ** 0.5
-                    non_linearity = 2
-                    factor = (speed / max_speed) ** non_linearity
-                    rel_x = abs_x / max_value * factor * 40
-                    rel_y = abs_y / max_value * factor * 40
-
-                    pending_x_rel = rel_x
-                    pending_y_rel = rel_y
-                    rel_x = int(pending_x_rel)
-                    rel_y = int(pending_y_rel)
-                    pending_x_rel -= rel_x
-                    pending_y_rel -= rel_y
-
-                    print('factor', factor)
-                    print('speed', speed)
-                    print(rel_x, rel_y)
-
-                    self._write(
-                        keymapper_device,
-                        evdev.ecodes.EV_REL,
-                        evdev.ecodes.ABS_Y,
-                        rel_y
-                    )
+                await asyncio.sleep(1 / 60)
 
-                    self._write(
-                        keymapper_device,
-                        evdev.ecodes.EV_REL,
-                        evdev.ecodes.ABS_X,
-                        rel_x
-                    )
+                abs_y = self.abs_y
+                abs_x = self.abs_x
+
+                # to make small movements smaller for more precision
+                speed = (abs_x ** 2 + abs_y ** 2) ** 0.5
+                non_linearity = 4
+                factor = (speed / max_speed) ** non_linearity
+
+                rel_x = abs_x * factor * 80 / max_value
+                rel_y = abs_y * factor * 80 / max_value
+
+                self.pending_x_rel += rel_x
+                self.pending_y_rel += rel_y
+                rel_x = int(self.pending_x_rel)
+                rel_y = int(self.pending_y_rel)
+                self.pending_x_rel -= rel_x
+                self.pending_y_rel -= rel_y
+
+                self._write(
+                    keymapper_device,
+                    evdev.ecodes.EV_REL,
+                    evdev.ecodes.ABS_Y,
+                    rel_y
+                )
 
-                await asyncio.sleep(1 / 60)
+                self._write(
+                    keymapper_device,
+                    evdev.ecodes.EV_REL,
+                    evdev.ecodes.ABS_X,
+                    rel_x
+                )
 
         asyncio.ensure_future(spam_mouse_movements())
 
@@ -350,10 +348,10 @@ class KeycodeInjector:
                     continue
 
                 if event.code == evdev.ecodes.ABS_X:
-                    abs_x = event.value
+                    self.abs_x = event.value
 
                 if event.code == evdev.ecodes.ABS_Y:
-                    abs_y = event.value
+                    self.abs_y = event.value
 
                 continue