tweak dropdown visuals

dropdown.lua

@@ -3,6 +3,7 @@ local self = {}
 local dropdowns = {}
 
 local dropdownValueCache = {}
+local dropdownScrollCache = {}
 
 local maxDropdown = 16
 
@@ -178,6 +179,9 @@ function self.render()
         love.graphics.rectangle('line', x, y, w, h)
 
         love.graphics.setColor(1, 1, 1, 1 * a)
+        if i == v.selected then
+          love.graphics.setColor(0.8, 0.8, 1, 1 * a)
+        end
         love.graphics.print(v.options[i], x + 2, y + 2)
 
         ::continue::
@@ -206,8 +210,8 @@ function self.mousepressed(x, y, m)
         if m == 1 then
           self.openDropdown = i
           clickedDropdown = true
-          dropdownScroll = 0
+          dropdownScroll = dropdownScrollCache[i] or 0
-          dropdownScrollE = 0
+          dropdownScrollE = dropdownScrollCache[i] or 0
         elseif m == 3 then
           dropdowns[i].selected = math.random(1, #dropdowns[i].options)
           createUI()
@@ -221,6 +225,7 @@ function self.mousepressed(x, y, m)
   end
 
   if not clickedDropdown and m == 1 then
+    dropdownScrollCache[self.openDropdown] = dropdownScroll
     self.openDropdown = 0
     return true
   end
@@ -234,6 +239,7 @@ function self.mousereleased(x, y, m)
         v.selected = math.floor((y - v.y) / h - dropdownScrollE)
         self.openDropdown = 0
         dropdownValueCache[v.name] = {selected = v.selected}
+        dropdownScrollCache[i] = dropdownScroll
         createUI()
       end
     end