item list only wheel-scrolls when you move whell on the navbar

src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryItemGrid.kt

@@ -603,11 +603,13 @@ open class UIItemInventoryItemGrid(
         super.scrolled(amountX, amountY)
 
         items.forEach { if (it.mouseUp) it.scrolled(amountX, amountY) }
+        navRemoCon.scrolled(amountX, amountY)
 
         // scroll the item list (for now)
-        if (mouseUp) {
-            scrollItemPage(amountY.toInt())
-        }
+        // commented out -- this clashes with the wheelFun
+//        if (mouseUp) {
+//            scrollItemPage(amountY.toInt())
+//        }
 
         return true
     }

src/net/torvald/terrarum/modulebasegame/ui/UIItemListNavBarVertical.kt

@@ -177,6 +177,19 @@ class UIItemListNavBarVertical(
         return super.touchDown(screenX, screenY, pointer, button)
     }
 
+    override fun scrolled(amountX: Float, amountY: Float): Boolean {
+        if (mouseUp && amountY > 0f) {
+            scrollDownListener.invoke(this, scrollDownButton)
+            return true
+        }
+        else if (mouseUp && amountY < 0f) {
+            scrollUpListener.invoke(this, scrollUpButton)
+            return true
+        }
+
+        return false
+    }
+
     override fun dispose() {
     }