Add analog joystick support with fine control adjustments, improve prediction smoothing, reduce correction thresholds, and enhance lobby and overlay UI responsiveness.

cmd/client/main.go

@@ -49,6 +49,7 @@ type InputState struct {
 	Right    bool
 	Jump     bool
 	Down     bool
+	JoyX     float64 // Analoger Joystick-Wert (-1.0 bis 1.0)
 }
 
 // --- GAME STRUCT ---