Double Trigger Prevention for POV Hats

Backends/System/Windows/Sources/kinc/backend/system.c.h

@@ -1022,14 +1022,20 @@ bool handleDirectInputPad(int padIndex) {
 			DWORD *now = &di_padState[padIndex].rgdwPOV[povIndex];
 			DWORD *last = &di_lastPadState[padIndex].rgdwPOV[povIndex];
 
-			if (*now != *last) {
-				// Maybe this could use fewer conditionals with some clever math
-				// cardinal press || cardinal + counter-clockwise || cardinal + clockwise
-				kinc_internal_gamepad_trigger_button(padIndex, 12, (*now == 0 || *now == 31500 || *now == 4500));
-				kinc_internal_gamepad_trigger_button(padIndex, 13, (*now == 18000 || *now == 13500 || *now == 22500));
-				kinc_internal_gamepad_trigger_button(padIndex, 14, (*now == 27000 || *now == 22500 || *now == 31500));
-				kinc_internal_gamepad_trigger_button(padIndex, 15, (*now == 9000 || *now == 4500 || *now == 13500));
-			}
+			int up    = (*now == 0     || *now == 31500 || *now == 4500);
+			int down  = (*now == 18000 || *now == 13500 || *now == 22500);
+			int left  = (*now == 27000 || *now == 22500 || *now == 31500);
+			int right = (*now == 9000  || *now == 4500  || *now == 13500);
+
+			int lastUp    = (*last == 0     || *last == 31500 || *last == 4500);
+			int lastDown  = (*last == 18000 || *last == 13500 || *last == 22500);
+			int lastLeft  = (*last == 27000 || *last == 22500 || *last == 31500);
+			int lastRight = (*last == 9000  || *last == 4500  || *last == 13500);
+
+			if (up != lastUp)       kinc_internal_gamepad_trigger_button(padIndex, 12, up);
+			if (down != lastDown)   kinc_internal_gamepad_trigger_button(padIndex, 13, down);
+			if (left != lastLeft)   kinc_internal_gamepad_trigger_button(padIndex, 14, left);
+			if (right != lastRight) kinc_internal_gamepad_trigger_button(padIndex, 15, right);
 		}
 
 		kinc_memcpy(&di_lastPadState[padIndex], &di_padState[padIndex], sizeof(DIJOYSTATE2));