fix hidden buttons register clicks

lib/simple_ui/element.lua

@@ -11,8 +11,6 @@ function uiElement:update(dt) end
 function uiElement:draw() end
 
 function uiElement:hitTest(screenX, screenY)
-    local r, g, b, a = love.graphics.getColor()
-    if a == 0 then return false end
     local lx, ly = self.transform:inverseTransformPoint(screenX, screenY)
     return self.bounds:hasPoint(lx, ly)
 end

lib/simple_ui/level/skill_row.lua

@@ -71,6 +71,7 @@ function skillRow.new(characterId)
         for i, spell in ipairs(behavior.spellbook) do
             local skb = skillButton:new { icon = spell.tag }
             skb.onClick = function()
+                if t.state ~= "idle" then return end
                 skb.selected = not skb.selected
                 if t.selected then t.selected.selected = false end
                 t.selected = skb