attack & annotation refactor

lib/spellbook.lua

@@ -90,11 +90,15 @@ function attack:cast(caster, target)
     if caster:try(Tree.behaviors.map, function(map)
             local dist = math.max(math.abs(map.position.x - target.x), math.abs(map.position.y - target.y))
             print("dist:", dist)
-            return dist >= 2
+            return dist > 2
         end) then
         return false
     end
 
+    caster:try(Tree.behaviors.stats, function (stats)
+        stats.mana = stats.mana - 2
+    end)
+
     --- @type Character
     local targetCharacterId = Tree.level.characterGrid:get(target)
     if not targetCharacterId then return false end