ATITD-Tools/Desert-Paint-Lab Changeset

Changeset - 3463e3d12e78

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Jason Maltzen (jmaltzen) - 7 years ago 2018-05-18 18:07:15
jason.maltzen@unsanctioned.net

Fix a bug where recipe generation could use up to 1 more than MaxConcentration

1 file changed with 17 insertions and 8 deletions:

RecipeGenerator.cs

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RecipeGenerator.cs

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 /*
  * Copyright (c) 2015, Jason Maltzen
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
 */
 using System;
 using System.IO;
 using System.Collections.Generic;
 using System.Collections.Concurrent;
 using System.Text.RegularExpressions;
 using System.Threading;
 namespace DesertPaintLab
+{
     public class NewRecipeEventArgs : EventArgs
+    {
         string color;
         PaintRecipe recipe;
         public NewRecipeEventArgs(string color, PaintRecipe recipe)
+        {
             this.color = color;
             this.recipe = recipe;
+        }
         public string Color
+        {
             get {
                 return color;
+            }
+        }
         public PaintRecipe Recipe
+        {
             get {
                 return recipe;
+            }
+        }
+    }
     public class RecipeGenerator
+    {
         public enum SearchType {
             DEPTH_FIRST,
             BREADTH_FIRST
         };
         public SearchType Mode { get; set; }
         public uint MinConcentration { get; private set; } // minimum paint concentration
         public uint MaxConcentration { get; private set; } // maximum paint concentration
         public uint MaxReagents { get; private set; } // maximum number of reagents to use in the recipe
         public uint MinReagents { get; private set; } // minimum number of reagents to use in the recipe
         public uint FullQuantityDepth { get; private set; } // at or equal this number of reagents, ignore ingredient settings for max quantity
         public uint FullQuantity { get; private set; }  // The max number of a reagent to use at full quantity
         public uint MaxThreads { get; set; }
         ReactionSet reactions;
         bool running = false;
         int runningThreads = 0;
         SortedDictionary<string, uint> recipeCosts = new SortedDictionary<string, uint>();
         SortedDictionary<string, PaintRecipe> recipes = new SortedDictionary<string, PaintRecipe>();
         uint totalReagents;
         List<Reagent> costSortedReagents = new List<Reagent>();
         ConcurrentQueue<RecipeSearchNode> searchQueue = new ConcurrentQueue<RecipeSearchNode>();
         ulong recipeCount = 0;
         List<Thread> generatorThreads = new List<Thread>();
         Object workerLock = new Object();
         bool requestCancel = false;
         StreamWriter log;
         // events
         public event EventHandler Finished;
         public event EventHandler Progress;
         public event EventHandler<NewRecipeEventArgs> NewRecipe;
         public RecipeGenerator(ReactionSet reactions)
+        {
             Mode = SearchType.BREADTH_FIRST;
             this.reactions = reactions;
             foreach (PaintColor color in Palette.Colors)
+            {
                 recipes.Add(color.Name, new PaintRecipe());
                 recipeCosts.Add(color.Name, uint.MaxValue);
+            }
             MinReagents = 1;
             MaxReagents = 5;
             MinConcentration = 10;
             MaxConcentration = 20;
+        }
         public SortedDictionary<string, PaintRecipe> Recipes
+        {
             get
+            {
                 return recipes;
+            }
+        }
         public ulong RecipeCount
+        {
             get
+            {
                 return recipeCount;
+            }
+        }
         public bool CanResume
+        {
             get
+            {
                 return (!running && (searchQueue.Count > 0));
+            }
+        }
         public string Log
+        {
             set
+            {
                 if (value != null)
+                {
                     log = new StreamWriter(value);
+                }
                 else
+                {
                     log = null;
+                }
+            }
+        }
         private class ReagentCostSort : IComparer<Reagent>
+        {
             public int Compare(Reagent reagent1, Reagent reagent2)
+            {
                 return (int)reagent1.Cost - (int)reagent2.Cost;
+            }
+        }
         public void InitRecipes(SortedDictionary<string, PaintRecipe> initialRecipes)
+        {
             if (running)
+            {
                 return;
+            }
             recipeCosts.Clear();
             recipes.Clear();
             foreach (PaintRecipe recipe in initialRecipes.Values)
+            {
                 //PaintRecipe recipeCopy = new PaintRecipe(recipe);
                 AddCheapestRecipe(recipe);
+            }
+        }
         private void InitSortedReagents()
+        {
             costSortedReagents.Clear();
             foreach (string name in ReagentManager.Names)
+            {
                 Reagent reagent = ReagentManager.GetReagent(name);
                 costSortedReagents.Add(reagent);
+            }
             costSortedReagents.Sort(new ReagentCostSort());
+        }
         // Generate paint recipes.
         // minConcentration - the minimum permitted concentration in a recipe (10 for paint, 50 for ribbons)
         // maxConcentration - the maximum concentrataion for a recipe
         // minReagents - the minimum number of ingredients in a recipe
         // maxReagents - the maximum number of ingredients allowed in a recipe
         // fullQuantityDepth - at this depth of ingredient or below, allow up to fullQuantity of any reagent
         // fullQuantity - the maximum amount of any reagent to permit up to the full quantity depth. After that, reagents are limited by the
         //                per-reagent value
         public void BeginRecipeGeneration(uint minConcentration, uint maxConcentration, uint minReagents, uint maxReagents, uint fullQuantityDepth, uint fullQuantity)
+        {
             if (running)
+            {
                 // Already running - don't start again
                 return;
+            }
             this.MinConcentration = minConcentration;
             this.MaxConcentration = maxConcentration;
             this.MinReagents = minReagents;
             this.MaxReagents = maxReagents;
             this.FullQuantity = fullQuantity;
             this.FullQuantityDepth = fullQuantityDepth;
             // first, sort reagents by cost.
             InitSortedReagents();
             totalReagents = (uint)costSortedReagents.Count;
             // Pre-populate recipes list with:
             // 1) 1-ingredient recipes @ min concentration for all enabled ingredients with a count >= min concentration
             // 2) any previously-generated recipes
             int enabledReagentCount = 0;
             PaintRecipe recipe = new PaintRecipe();
             recipe.Reactions = reactions;
             foreach (Reagent reagent in costSortedReagents)
+            {
                 if (reagent.Enabled)
+                {
                     if (!reagent.IsCatalyst && ((reagent.RecipeMax >= minConcentration) || ((FullQuantityDepth > 0) && (FullQuantity >= minConcentration))))
+                    {
                         recipe.Clear();
                         recipe.AddReagent(reagent.Name, minConcentration);
                         AddCheapestRecipe(recipe);
+                    }
                     ++enabledReagentCount;
+                }
+            }
             this.MaxReagents = (uint)Math.Min(enabledReagentCount, this.MaxReagents);
             this.MinReagents = (uint)Math.Min(this.MinReagents, this.MaxReagents);
             while (!searchQueue.IsEmpty)
+            {
                 RecipeSearchNode node;
                 searchQueue.TryDequeue(out node);
+            }
             for (uint reagentIdx = 0; reagentIdx < costSortedReagents.Count; ++reagentIdx)
+            {
                 if (costSortedReagents[(int)reagentIdx].Enabled)
+                {
                     // queue up all combinations of MinReagents
                     RecipeSearchNode initialNode = new RecipeSearchNode(costSortedReagents, reagentIdx);
                     initialNode.FullQuantity = FullQuantity;
                     initialNode.FullQuantityDepth = FullQuantityDepth;
                     initialNode.MinConcentration = minConcentration;
                     initialNode.MaxConcentration = maxConcentration;
                     initialNode.MinReagents = minReagents;
                     initialNode.MaxReagents = maxReagents;
                     if (MinReagents > 1)
+                    {
                         while (NextReagentSetBreadthFirst(initialNode, 1, minReagents) == true)
+                        {
                             if (initialNode.ReagentCount == minReagents)
+                            {
                                 //Console.WriteLine("Initial node at size {0}/{1} with recipe: {2}", initialNode.ReagentCount, minReagents, initialNode.TestRecipe.ToString());
                                 RecipeSearchNode searchNode = new RecipeSearchNode(initialNode);
                                 searchQueue.Enqueue(searchNode);
+                            }
+                        }
+                    }
                     else
+                    {
                         searchQueue.Enqueue(initialNode);
+                    }
+                }
+            }
             recipeCount = 0;
             if (log != null)
+            {
                 log.WriteLine("Begin recipe generation: MaxConcentration={0} MinReagents={1} MaxReagents={2} FullQuantity={3} FullQuantityDepth={4}", MaxConcentration, MinReagents, MaxReagents, FullQuantity, FullQuantityDepth);
+            }
             // start worker threads to do the actual work
             ResumeRecipeGeneration();
+        }
         public void ResumeRecipeGeneration()
+        {
             if (running)
+            {
                 // Already running - don't start again
                 return;
+            }
             running = true;
             requestCancel = false;
             if (log != null)
+            {
                 log.WriteLine("Resuming recipe generation: pre-threads={0} reagent count={1} search queue={2}", runningThreads, costSortedReagents.Count, searchQueue.Count);
+            }
             runningThreads = 0; // presumably!
             int threadCount = Math.Min(Math.Min(costSortedReagents.Count, searchQueue.Count), (int)MaxThreads);
             if (threadCount == 0)
+            {
                 if (Finished != null)
+                {
                     Finished(this, null);
+                }
+            }
             generatorThreads.Clear();
             System.Console.WriteLine("Starting {0} generator threads.", threadCount);
             for (int i = 0; i < threadCount; ++i)
+            {
                 Thread thr = new Thread(new ThreadStart(this.Generate));
                 thr.Priority = ThreadPriority.BelowNormal;
                 generatorThreads.Add(thr);
+            }
             foreach (Thread thr in generatorThreads)
+            {
                 thr.Start();
+            }
+        }
         public bool SaveState(string file)
+        {
             if (running)
+            {
                 // can't save state while running
                 return false;
+            }
             lock(workerLock)
+            {
                 using (StreamWriter writer = new StreamWriter(file, false))
+                {
                     writer.WriteLine("MinReagents: {0}", MinReagents);
                     writer.WriteLine("MaxReagents: {0}", MaxReagents);
                     writer.WriteLine("FullQuantityDepth: {0}", FullQuantityDepth);
                     writer.WriteLine("FullQuantity: {0}", FullQuantity);
                     writer.WriteLine("TotalReagents: {0}", totalReagents);
                     writer.WriteLine("RecipeCount: {0}", recipeCount);
                     writer.WriteLine("SearchType: {0}", Mode.ToString());
                     foreach (KeyValuePair<string, PaintRecipe> pair in recipes)
+                    {
                         PaintRecipe recipe = pair.Value;
                         string colorName = Palette.FindNearest(recipe.ReactedColor);
                         writer.WriteLine("BeginRecipe: {0}", colorName);
                         foreach (PaintRecipe.RecipeIngredient ingredient in recipe.Ingredients)
+                        {
                             writer.WriteLine("Ingredient: {0}={1}", ingredient.name, ingredient.quantity);
+                        }
                         writer.WriteLine("EndRecipe: {0}", colorName);
+                    }
                     writer.WriteLine("SearchNodes: {0}", searchQueue.Count);
                     foreach (RecipeSearchNode node in searchQueue)
+                    {
                         node.SaveState(writer);
+                   }
+                }
+            }
             return true;
+        }
         static Regex keyValueRegex = new Regex(@"(?<key>\w+)\:\s*(?<value>.+)\s*");
         static Regex ingredientRegex = new Regex(@"(?<ingredient>(\w+\s)*\w+)\s*=\s*(?<quantity>\d)\s*");
         public bool LoadState(string file)
+        {
             // cannot be running, and reactions must be set
             if (running)
+            {
                 return false;
+            }
             InitSortedReagents();
             bool success = true;
             PaintRecipe currentRecipe = null;
             Match match;
             string line;
             using (StreamReader reader = new StreamReader(file, false))
+            {
                 while (success && ((line = reader.ReadLine()) != null))
+                {
                     match = keyValueRegex.Match(line);
                     if (match.Success)
+                    {
                         string value = match.Groups["value"].Value;
                         switch(match.Groups["key"].Value)
+                        {
                             case "MinReagents":
                                 MinReagents = uint.Parse(value);
                                 MaxReagents = (uint)Math.Max(this.MinReagents, this.MaxReagents);
                                 break;
                             case "MaxReagents":
                                 MaxReagents = uint.Parse(value);
                                 MinReagents = (uint)Math.Min(this.MinReagents, this.MaxReagents);
                                 break;
                             case "FullQuantityDepth":
                                 FullQuantityDepth = uint.Parse(value);
                                 break;
                             case "FullQuantity":
                                 FullQuantity = uint.Parse(value);
                                 break;
                             case "TotalReagents":
                                 totalReagents = uint.Parse(value);
                                 break;
                             case "RecipeCount":
                                 if (!ulong.TryParse(value, out recipeCount))
+                                {
                                     // must have rolled to negative - try as an int and convert
                                     int recipeCountInt = int.Parse(value);
                                     recipeCount = (ulong)((long)recipeCountInt & 0x00000000ffffffffL);
+                                }
                                 break;
                             case "BeginRecipe":
                                 currentRecipe = new PaintRecipe();
                                 currentRecipe.Reactions = reactions;
                                 break;
                             case "EndRecipe":
                                 if (currentRecipe != null)
+                                {
                                     PaintColor color = currentRecipe.ReactedColor;
                                     uint cost = currentRecipe.Cost;
                                     recipes[color.Name] = currentRecipe; // replace
                                     recipeCosts[color.Name] = cost;
                                     currentRecipe = null;
+                                }
                                 break;
                             case "Ingredient":
                                 if (currentRecipe != null)
+                                {
                                     Match ingredientMatch = ingredientRegex.Match(match.Groups["value"].Value);
                                     if (ingredientMatch.Success)
+                                    {
                                         uint quantity = uint.Parse(ingredientMatch.Groups["quantity"].Value);
                                         currentRecipe.AddReagent(ingredientMatch.Groups["ingredient"].Value, quantity);
+                                    }
                                     else
+                                    {
                                         success = false;
+                                    }
+                                }
                                 break;
                             case "SearchNodes":
                                 int nodeCount = int.Parse(match.Groups["value"].Value);
                                 for (int i = 0; i < nodeCount; ++i)
+                                {
                                     RecipeSearchNode node = new RecipeSearchNode(costSortedReagents);
                                     node.FullQuantity = FullQuantity;
                                     node.FullQuantityDepth = FullQuantityDepth;
                                     node.MinReagents = MinReagents;
                                     node.MaxReagents = MaxReagents;
                                     node.MaxConcentration = MaxConcentration;
                                     success = success && node.LoadState(reader);
                                     if (success)
+                                    {
                                         searchQueue.Enqueue(node);
+                                    }
+                                }
                                 break;
                             case "SearchType":
                                 Mode = (SearchType)Enum.Parse(typeof(SearchType), match.Groups["value"].Value);
                                 break;
                             default:
                                 success = false;
                                 break;
+                        }
+                    }
                     else
+                    {
                         success = false;
                         break;
+                    }
+                }
                 return success;
+            }
+        }
         private void Generate()
+        {
             RecipeSearchNode node;
             lock(workerLock)
+            {
                 ++runningThreads;
+            }
             bool ok = true;
             do
+            {
                 lock (workerLock)
+                {
                     ok = searchQueue.TryDequeue(out node);
+                }
                 if (ok)
+                {
                     if (Mode == SearchType.DEPTH_FIRST)
+                    {
                         uint targetQuantity = (node.ReagentCount <= FullQuantityDepth) ? ((uint)node.ReagentCount * FullQuantity) : node.MaxConcentration + 1;
                         uint targetQuantity = (node.ReagentCount <= FullQuantityDepth)
                             ? ((uint)node.ReagentCount * FullQuantity)
                             : node.MaxConcentration + 1;
                         do {
                             --targetQuantity;
                             node.InitForQuantity(targetQuantity);
                         } while (targetQuantity > MinConcentration && (node.CurrentTargetQuantity != node.UsedQuantity));
                         while ((ok = IterateDepthFirst(node)) && !requestCancel)
+                        {
                             if (Progress != null)
+                            {
                                 Progress(this, null);
+                            }
+                        }
+                    }
                     else
+                    {
                         // breadth-first search
                         uint targetQuantity = MinConcentration-1;
                         uint quantityLimit = (node.ReagentCount <= FullQuantityDepth) ? (FullQuantity * (uint)node.ReagentCount) : node.MaxConcentration;
                         uint targetQuantity = MinConcentration - 1;
                         uint quantityLimit = (node.ReagentCount <= FullQuantityDepth)
                             ? (FullQuantity * (uint)node.ReagentCount)
                             : node.MaxConcentration;
                         do {
                             ++targetQuantity;
                             node.InitForQuantity(targetQuantity);
-                        } while ((targetQuantity <= quantityLimit) && (node.CurrentTargetQuantity != node.UsedQuantity));
                         } while ((targetQuantity < quantityLimit) && (node.CurrentTargetQuantity != node.UsedQuantity));
                         while ((ok = IterateBreadthFirst(node)) && !requestCancel)
+                        {
                             if (Progress != null)
+                            {
                                 Progress(this, null);
+                            }
                             Progress?.Invoke(this, null);
+                        }
+                    }
                     if (ok)
+                    {
                         // stopped because cancel was requested - requeue the node in its current state for resume
                         searchQueue.Enqueue(node);
+                    }
+                }
             } while (!requestCancel && ok);
             bool done = false;
             lock(workerLock)
+            {
                 --runningThreads;
                 //generatorThreads.Remove(Thread.CurrentThread);
                 done = (runningThreads == 0);
+            }
             if (done)
+            {
                 running = false;
                 requestCancel = false;
                 if (Finished != null)
+                {
                     Finished(this, null);
+                }
+            }
+        }
         // Add the cheapest recipe to the recipe list
         // returns the discarded recipe from the pair (or null if no original recipe to replace)
         private void AddCheapestRecipe(PaintRecipe recipe)
+        {
             if (recipe.IsValidForConcentration(MinConcentration))
+            {
                 recipe.Reactions = reactions;
                 string colorName = Palette.FindNearest(recipe.ReactedColor);
                 //System.Console.WriteLine("Recipe: {0} {1}:", colorName, recipe.Cost);
                 //foreach (PaintRecipe.RecipeIngredient ingr in recipe.Ingredients)
                 //{
                 //    System.Console.WriteLine("    -> {0} {1}", ingr.quantity, ingr.name);
                 //}
                 uint cost;
                 lock (workerLock)
+                {
                     if (recipeCosts.TryGetValue(colorName, out cost))
+                    {
                         if (cost > recipe.Cost)
+                        {
                             recipes[colorName].CopyFrom(recipe);
                             recipeCosts[colorName] = recipe.Cost;
                             if (NewRecipe != null)
+                            {
                                 NewRecipeEventArgs args = new NewRecipeEventArgs(colorName, recipe);
                                 NewRecipe(this, args);
+                            }
+                        }
                         else
+                        {
                             Console.WriteLine("Ignoring recipe - existing cost is cheaper.");
+                        }
+                    }
                     else
+                    {
                         // This would be an error!
                         recipeCosts.Add(colorName, recipe.Cost);
                         recipes.Add(colorName, new PaintRecipe(recipe));
                         if (NewRecipe != null)
+                        {
                             NewRecipeEventArgs args = new NewRecipeEventArgs(colorName, recipe);
                             NewRecipe(this, args);
+                        }
+                    }
+                }
+            }
             else
+            {
                 string msg = String.Format("Recipe is invalid ({0} ingredients)\n", recipe.Ingredients.Count);
                 foreach (PaintRecipe.RecipeIngredient ingr in recipe.Ingredients)
+                {
                     msg += String.Format("    -> {0} {1}", ingr.quantity, ingr.name);
+                }
                 lock (workerLock) {
                     Console.WriteLine(msg);
+                }
+            }
+        }
         private bool IterateDepthFirst(RecipeSearchNode node)
+        {
             TestCurrentRecipe(node);
             // pick recipe quantities at current recipe ingredients/size
             if (NextRecipe(node))
+            {
                 lock(workerLock)
+                {
                     ++recipeCount;
+                }
                 //System.Console.WriteLine("Found next recipe at size {0} qty {1}", node.Reagents.Count, node.CurrentTargetQuantity);
                 return true;
+            }
             if (NextRecipeSize(node))
+            {
                 //System.Console.WriteLine("Found next recipe size {0}", node.CurrentTargetQuantity);
                 return true;
+            }
             // Search for next ingredient combo - all quantity combos for previous were searched
             //System.Console.WriteLine("Finding next ingredient combo");
             do
+            {
                 if (!node.AddNextReagent())
+                {
                     while ((node.ReagentCount > node.MinReagents) && (node.LastReagent == (totalReagents-1)))
+                    {
                         node.RemoveLastReagent();
+                    }
                     if (node.ReagentCount == node.MinReagents)
+                    {
                         // done
                         return false;
+                    }
                     uint nextReagent = node.NextFreeReagent(node.LastReagent);
                     while ((node.ReagentCount > node.MinReagents) && (nextReagent >= totalReagents))
+                    {
                         // No more reagents to try at this level
                         node.RemoveLastReagent();
                         if (node.ReagentCount > node.MinReagents)
+                        {
                             nextReagent = node.NextFreeReagent(node.LastReagent);
+                        }
+                    }
                     if (node.ReagentCount == node.MinReagents)
+                    {
                         // done
                         return false;
+                    }
                     node.ReplaceLastReagent(nextReagent);
+                }
             } while (node.MaxConcentration < (node.MinConcentration + node.CatalystCount));
             node.InitForQuantity(node.MaxConcentration);
             //string outStr = "{0} : {1} : ";
             //for (int i = 0; i < currentReagents.Count; ++i)
             //{
             //    Reagent reagent = costSortedReagents[(int)currentReagents[i]];
             //    if (i > 0)
             //    {
             //        outStr += ", ";
             //    }
             //    outStr += reagent.Name + " (" + reagent.Cost + ")";
             //}
             //Console.WriteLine(outStr, currentReagents.Count, recipeCount);
             return true;
+        }
         private bool IterateBreadthFirst(RecipeSearchNode node)
+        {
             // pick recipe quantities at current recipe ingredients/size
             TestCurrentRecipe(node);
             lock(workerLock)
+            {
                 ++recipeCount;
+            }
             // search all quantities of current recipe
             if (NextRecipe(node))
+            {
                 //System.Console.WriteLine("Found next recipe at size {0} qty {1}", node.ReagentCount, node.CurrentTargetQuantity);
                 return true;
+            }
             // Try next quantity
             uint newQuantity;
             uint quantityLimit = ((uint)node.ReagentCount <= FullQuantityDepth) ? ((uint)node.ReagentCount * FullQuantity) : node.MaxConcentration;
             do {
                 newQuantity = node.CurrentTargetQuantity + 1;
                 //Console.WriteLine("Try quantity {0}", newQuantity);
                 if (newQuantity <= quantityLimit)
+                {
                     node.InitForQuantity(newQuantity);
                     if (node.CurrentTargetQuantity <= node.UsedQuantity)
+                    {
                         if (log != null) { lock(log) { log.WriteLine("Update quantity to {0}", node.CurrentTargetQuantity); } }
                         return true;
+                    }
+                }
             } while (newQuantity < quantityLimit);
             bool ok = NextReagentSetBreadthFirst(node, node.MinReagents, node.MaxReagents);
             return ok;
+        }
         private bool NextReagentSetBreadthFirst(RecipeSearchNode node, uint minReagents, uint maxReagents)
+        {
             // search all variants at this depth of recipe
             // increase recipe depth
             // next reagent in last position
             // if at end, pop reagent
             //Console.WriteLine("Finding new recipe after quantity {0}/{1} used {2}", newQuantity, node.MaxConcentration, node.UsedQuantity);
             node.InitForQuantity(node.MinConcentration+node.CatalystCount); // reset quantity
             int currentDepth = node.ReagentCount;
             bool recipeFound = false;
             uint nextReagent;
             do {
                 //Console.WriteLine("Current depth: {0}/{1}", currentDepth, node.MaxReagents);
                 do {
                     recipeFound = false;
                     // back out until we find a node that can be incremented
                     if (currentDepth > minReagents)
+                    {
                         while (node.ReagentCount > minReagents)
+                        {
                             if (node.LastReagent < (totalReagents - 1))
+                            {
                                 nextReagent = node.NextFreeReagent(node.LastReagent);
                                 if (nextReagent < totalReagents)
+                                {
                                     //Console.WriteLine("Replace last reagent with {0}", nextReagent);
                                     node.ReplaceLastReagent(nextReagent);
                                     break;
+                                }
                                 else
+                                {
                                     // shouldn't happen
                                     //Console.WriteLine("No available reagents at depth {0}!", node.ReagentCount);
                                     node.RemoveLastReagent();
                                     if (node.ReagentCount == minReagents)
+                                    {
                                         // just popped the last reagent at the top level
                                         ++currentDepth;
                                         if (log != null) { lock(log) { log.WriteLine("Increased depth to {0}/{1}", currentDepth, node.MaxReagents); } }
+                                    }
+                                }
+                            }
                             else
+                            {
                                 //Console.WriteLine("Pop last reagent");
                                 node.RemoveLastReagent();
                                 if (node.ReagentCount == minReagents)
+                                {
                                     // just popped the last reagent at the top level
                                     ++currentDepth;
                                     if (log != null) { lock(log) { log.WriteLine("Increased depth to {0}/{1} [pop last reagent at top level]", currentDepth, node.MaxReagents); } }
+                                }
+                            }
+                        }
                         // fill in the nodes up to the current depth
                         if (node.ReagentCount >= minReagents && currentDepth <= maxReagents)
+                        {
                             recipeFound = true;
                             while (node.ReagentCount < currentDepth)
+                            {
                                 if (! node.AddNextReagent())
+                                {
                                     if (log != null) { lock(log) { log.WriteLine("Failed to reagent {0}/{1}", node.ReagentCount+1, currentDepth); } }
                                     recipeFound = false;
+                                }
+                            }
+                        }
+                    }
                     //Console.WriteLine("Catalysts: {0} Reagents: {1} Min: {2}", node.CatalystCount, node.ReagentCount, node.MinReagents);
                 } while ((node.CatalystCount >= node.ReagentCount) && (node.ReagentCount >= minReagents)); // make sure to skip all-catalyst combinations
                 if (recipeFound)
+                {
                     break;
+                }
                 else
+                {
                     ++currentDepth;
                     if (log != null) { lock(log) { log.WriteLine("Increased depth to {0}/{1} [no recipe]", currentDepth, node.MaxReagents); } }
+                }
             } while (currentDepth <= maxReagents);
             if (recipeFound)
+            {
                 node.InitForQuantity(node.MinConcentration+node.CatalystCount); // minimum quantity for this recipe
                 if (node.TestRecipe == null)
+                {
                     node.TestRecipe = new PaintRecipe();
                     node.TestRecipe.Reactions = reactions;
+                }
                 node.TestRecipe.Clear();
                 for (int i = 0; i < node.ReagentCount; ++i)
+                {
                     node.TestRecipe.AddReagent(node.Reagent(i).Name, node.CurrentWeights[i]);
+                }
                 if (log != null) {
                     string combo = "";
                     foreach (PaintRecipe.RecipeIngredient ingr in node.TestRecipe.Ingredients)
+                    {
                         combo += " " + ingr.name;
+                    }
                     lock(log) { log.WriteLine("New ingredients: " + combo); }
+                }
+            }
             return recipeFound;
+        }
         private void TestCurrentRecipe(RecipeSearchNode node)
+        {
             if (node.TestRecipe == null)
+            {
                 node.TestRecipe = new PaintRecipe();
                 node.TestRecipe.Reactions = reactions;
+            }
             node.TestRecipe.Clear();
             for (int i = 0; i < node.ReagentCount; ++i)
+            {
                 node.TestRecipe.AddReagent(node.Reagent(i).Name, node.CurrentWeights[i]);
+            }
             AddCheapestRecipe(node.TestRecipe);
             //if (log != null) { lock(log) { log.WriteLine("Tested recipe: {0}", node.TestRecipe); } }
+        }
         private bool NextRecipe(RecipeSearchNode node)
+        {
             // check for the next recipe
             uint remainingWeight = node.CurrentTargetQuantity - node.CatalystCount;
             if (remainingWeight < MinConcentration)
+            {
                 // not possible to make a valid recipe
                 Console.WriteLine("Insufficient remaining weight");
                 return false;
+            }
             //uint remainingReagents = (uint)node.Reagents.Count - node.CatalystCount;
             uint depth = (uint)node.ReagentCount;
             uint weightToConsume = 0;
             uint spaceBelow = 0;
             int reagentsBelow = 0;
             for (int i = (int)depth-1 ; i >= 0; --i)
+            {
                 uint currentWeight = node.CurrentWeights[i];
                 if ((spaceBelow >= (weightToConsume+1)) && (currentWeight > 1))
+                {
                     // reduce this node by 1, allocate remaining weight to reagents below it
                     node.SetWeight(i, currentWeight-1);
                     weightToConsume += 1;
                     for (int j = i+1; j < depth; ++j)
+                    {
                         --reagentsBelow;
                         Reagent reagent = node.Reagent(j);
                         uint allocated = (uint)Math.Min(reagent.IsCatalyst ? 1 : (depth <= FullQuantityDepth ? FullQuantity : reagent.RecipeMax), weightToConsume - reagentsBelow);
                         if (allocated > 100)
+                        {
                             Console.WriteLine("ACK: allocated = {0}", allocated);
+                        }
                         node.SetWeight(j, allocated);
                         weightToConsume -= allocated;
+                    }
                     break;
+                }
                 else
+                {
                     Reagent reagent = node.Reagent(i);
                     spaceBelow += (reagent.IsCatalyst ? 1 : (depth <= FullQuantityDepth ? FullQuantity : reagent.RecipeMax));
                     weightToConsume += currentWeight;
                     ++reagentsBelow;
+                }
+            }
             //int recipeWeight = 0;
             //foreach (int weight in node.CurrentWeights)
             //{
             //    recipeWeight += weight;
             //}
             //if ((weightToConsume != 0) || (recipeWeight != node.CurrentTargetQuantity))
             //{
             //    Console.WriteLine("Failed recipe with leftover weight {0} ({1}/{2}):", weightToConsume, recipeWeight, node.CurrentTargetQuantity);
             //    for (int i = 0; i < node.Reagents.Count; ++i)
             //    {
             //        Console.WriteLine("   > {0} {1}", node.Reagent(i).Name, node.CurrentWeights[i]);
             //    }
             //}
             return (weightToConsume == 0);
+        }
         private bool NextRecipeSize(RecipeSearchNode node)
+        {
             uint newQuantity = node.CurrentTargetQuantity - 1;
             if (newQuantity < (node.MinConcentration + node.CatalystCount))
+            {
                 return false;
+            }
             node.InitForQuantity(newQuantity);
             if (node.CurrentTargetQuantity > node.UsedQuantity)
+            {
                 return false;
+            }
             return true;
+        }
         public void Wait()
+        {
             if (generatorThreads.Count > 0)
+            {
                 foreach (Thread thr in generatorThreads)
+                {
                     thr.Join();
+                }
                 generatorThreads.Clear();
+            }
+        }
         public void Stop()
+        {
             this.requestCancel = true;
+        }
         public void Reset()
+        {
             foreach (PaintRecipe recipe in recipes.Values)
+            {
                 recipe.Clear();
+            }
             foreach (string key in recipeCosts.Keys)
+            {
                 recipeCosts[key] = uint.MaxValue;
+            }
+        }
+    }
+}

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