Adjust how deadzones work

src/dusksdl2/input/inputsdl2.c

@@ -88,10 +88,9 @@ float_t inputButtonGetValueSDL2(const inputbutton_t button) {
           INPUT.platform.controller, button.gpAxis.axis
         );
         value = (float_t)axis / 32767.0f;
-
         if(!button.gpAxis.positive) value = -value;
-        if(value >= INPUT.deadzone) return value;
-        return 0.0f;
+        value = inputDeadzone(value, inputGetDeadzoneSDL2(button));
+        return value;
       }
     #endif
 

src/dusksdl2/input/inputsdl2.h

@@ -49,6 +49,15 @@ typedef struct {
  */
 void inputUpdateSDL2(void);
 
+/**
+ * Returns the deadzone for the given gamepad axis. Requires implementation by
+ * the host platform.
+ * 
+ * @param button The button to get the deadzone of.
+ * @return The deadzone for the given gamepad axis.
+ */
+float_t inputGetDeadzoneSDL2(const inputbutton_t button);
+
 /**
  * Returns the input value (between 0 and 1) of the given button.
  *