performance trune for tg cyber magician

procedure.lua

@@ -3640,6 +3640,8 @@ end
 function Synchro.CanCompleteSelection(candidates,target_level,tuner_race,tuner_level,tuner_filter,non_tuner_race,non_tuner_level,non_tuner_filter,tc,
 	tuner_min,tuner_max,non_tuner_min,non_tuner_max,level_mapper,hand_count_mapper,scheck,sgoalcheck,selected,index,state,prune_indexes)
 
+  	dfs_calls = dfs_calls + 1
+
 	if state.tuner_count>tuner_max then return false end
 	if state.non_tuner_count>non_tuner_max then return false end
 
@@ -3747,6 +3749,7 @@ function Synchro.CanCompleteSelection(candidates,target_level,tuner_race,tuner_l
 			local branch_state=Synchro.ApplyVariantState(
 				state,mc,diff,tuner_race,tuner_level,prune_tuner_filter,non_tuner_race,non_tuner_level,prune_non_tuner_filter,tc,prune_level,append_material_limit_filter
 			)
+			if branch_state~=nil then
 				table.insert(selected,mc)
 				if Synchro.CanCompleteSelection(
 					candidates,target_level,
@@ -3762,6 +3765,7 @@ function Synchro.CanCompleteSelection(candidates,target_level,tuner_race,tuner_l
 				table.remove(selected)
 			end
 		end
+	end
 
   	-- exclude branch
 	if Synchro.CanCompleteSelection(candidates,target_level,tuner_race,tuner_level,tuner_filter,non_tuner_race,non_tuner_level,non_tuner_filter,tc,
@@ -4262,11 +4266,13 @@ function Synchro.BuildStatesFromSelection(selection,tuner_race,tuner_level,tuner
                 st,card,selected,tc,tuner_race,tuner_level,tuner_filter,non_tuner_race,non_tuner_level,non_tuner_filter
             )) do
                 -- merge diff into full state
-                local new_state = Synchro.ApplyVariantState(
+                local new_state=Synchro.ApplyVariantState(
                     st,card,diff,tuner_race,tuner_level,tuner_filter,non_tuner_race,non_tuner_level,non_tuner_filter,tc,prune_level,append_material_limit_filter
                 )
+				if new_state~=nil then
                 	table.insert(next_states,new_state)
 				end
+            end
         end
 
 		table.insert(selected,card)
@@ -4517,8 +4523,18 @@ function Synchro.ApplyVariantState(st,card,diff,tuner_race,tuner_level,tuner_fil
 	if append_material_limit_filter~=nil then
 		new_material_limit_filter=aux.AND(append_material_limit_filter,st.material_limit_filter)
 	end
+	local new_possible_sums=diff.possible_sums or possible_sums
+	--- return nil if new_possible_sums has zero valid sum
+	local empty=true
+	for k,v in pairs(new_possible_sums) do
+		empty=false
+		break
+	end
+	if empty then
+		return nil
+	end
     return {
-        possible_sums=diff.possible_sums or possible_sums,
+        possible_sums=new_possible_sums,
         tuner_count=st.tuner_count+tuner_inc,
         non_tuner_count=st.non_tuner_count+non_tuner_inc,
         level_mapper=diff.level_mapper or st.level_mapper,