ATITD-Tools/Desert-Paint-Lab Changeset

Changeset - 339712c9aa0a

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Jason Maltzen (jmaltzen) - 9 years ago 2015-12-26 04:08:57
jason.maltzen@unsanctioned.net

Fix up a crash that can happen one resume if ingredients are disabled between recipe generation runs.

1 file changed with 8 insertions and 5 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
+    {
         protected class SearchNode
+        {
             //int initialReagentCount;
             uint[] reagents;
             public uint[] Reagents
+            {
                 get
+                {
                     return reagents;
+                }
+            }
             uint INVALID_REAGENT;
             int nextReagentPos;
             public int ReagentCount
+            {
                 get
+                {
                     return nextReagentPos;
+                }
+            }
             bool[] reagentInUse;
             List<Reagent> costSortedReagents;
             PaintRecipe testRecipe = null;
             public PaintRecipe TestRecipe
+            {
                 get
+                {
                     return testRecipe;
+                }
                 set
+                {
                     testRecipe = value;
+                }
+            }
             public int InitialCount { get; private set; }
             public uint CurrentTargetQuantity { get; set; }
             public uint MaxQuantity { get; set; }
             public uint UsedQuantity { get; private set; }
             public uint CatalystCount { get; set; }
             uint maxReagents;
             public uint MaxReagents
+            {
                 get
+                {
                     return maxReagents;
+                }
                 set
+                {
                     maxReagents = value;
                     currentWeights = new uint[maxReagents];
+                }
+            }
             uint[] currentWeights;
             public uint[] CurrentWeights
+            {
                 get
+                {
                     return currentWeights;
+                }
+            }
             public SearchNode(List<Reagent> costSortedReagents, uint[] reagents)
+            {
                 this.costSortedReagents = new List<Reagent>(costSortedReagents);
                 this.reagents = new uint[costSortedReagents.Count];
                 INVALID_REAGENT = (uint)costSortedReagents.Count;
                 nextReagentPos = reagents.Length;
                 for (int i = this.reagents.Length-1; i >= this.reagents.Length; --i)
+                {
                     reagents[i] = INVALID_REAGENT;
+                }
                 for (int i = reagents.Length-1; i >= 0; --i)
+                {
                     this.reagents[i] = reagents[i];
                     if (reagents[i] == INVALID_REAGENT)
+                    {
                         nextReagentPos = i;
+                    }
+                }
                 reagentInUse = new bool[costSortedReagents.Count];
                 for (uint reagentIdx = 0; reagentIdx < costSortedReagents.Count; ++reagentIdx)
+                {
                     reagentInUse[reagentIdx] = false;
+                }
                 foreach (uint reagentIdx in this.reagents)
+                {
                     if (reagentIdx != INVALID_REAGENT)
+                    {
                         reagentInUse[reagentIdx] = true;
+                    }
+                }
                 InitialCount = nextReagentPos;
                 MaxReagents = (uint)nextReagentPos; // better set this later!
                 UsedQuantity = 0;
+            }
             // top-level search
             public SearchNode(List<Reagent> costSortedReagents, uint startReagent)
+            {
                 this.costSortedReagents = new List<Reagent>(costSortedReagents);
                 this.reagents = new uint[costSortedReagents.Count];
                 INVALID_REAGENT = (uint)costSortedReagents.Count;
                 nextReagentPos = 0;
                 for (int i = 0; i < reagents.Length; ++i)
+                {
                     this.reagents[i] = INVALID_REAGENT;
+                }
                 reagentInUse = new bool[costSortedReagents.Count];
                 for (uint reagentIdx = 0; reagentIdx < costSortedReagents.Count; ++reagentIdx)
+                {
                     reagentInUse[reagentIdx] = false;
+                }
                 this.reagents[nextReagentPos++] = NextFreeReagent(startReagent);
                 InitialCount = 1; // don't iterate up beyond the start reagent
                 MaxReagents = 1;
                 UsedQuantity = 0;
+            }
             public SearchNode(List<Reagent> costSortedReagents)
+            {
                 this.costSortedReagents = costSortedReagents;
                 this.reagents = new uint[costSortedReagents.Count];
                 INVALID_REAGENT = (uint)costSortedReagents.Count;
                 nextReagentPos = 0;
                 for (int i = 0; i < reagents.Length; ++i)
+                {
                     this.reagents[i] = INVALID_REAGENT;
+                }
                 reagentInUse = new bool[costSortedReagents.Count];
                 for (uint reagentIdx = 0; reagentIdx < costSortedReagents.Count; ++reagentIdx)
+                {
                     reagentInUse[reagentIdx] = false;
+                }
                 this.reagents[nextReagentPos++] = NextFreeReagent(0);
                 InitialCount = 0;
                 MaxReagents = 1;
                 UsedQuantity = 0;
+            }
             public Reagent Reagent(int idx)
+            {
                 return costSortedReagents[(int)reagents[idx]];
+            }
             public uint LastReagent
+            {
                 get
+                {
                     return reagents[nextReagentPos - 1];
+                }
+            }
             public void RemoveLastReagent()
+            {
                 uint reagentIdx = reagents[nextReagentPos-1];
                 ReleaseReagent(reagentIdx);
                 if (costSortedReagents[(int)reagentIdx].IsCatalyst)
+                {
                     --CatalystCount;
+                }
                 reagents[nextReagentPos-1] = INVALID_REAGENT;
                 --nextReagentPos;
+            }
             public void ReplaceLastReagent(uint reagentIdx)
+            {
                 uint oldReagentIdx = reagents[nextReagentPos-1];
                 ReleaseReagent(oldReagentIdx);
                 reagents[nextReagentPos-1] = reagentIdx;
                 if (costSortedReagents[(int)oldReagentIdx].IsCatalyst)
+                {
                     --CatalystCount;
+                }
                 if (costSortedReagents[(int)reagentIdx].IsCatalyst)
+                {
                     ++CatalystCount;
+                }
+            }
             public uint NextFreeReagent(uint startIdx)
+            {
                 uint idx = startIdx;
                 for (; idx < costSortedReagents.Count; ++idx)
+                {
                     bool inUse = reagentInUse[idx];
                     if (inUse == false)
+                    if ((inUse == false) && (costSortedReagents[(int)idx].Enabled))
+                    {
                         //Console.WriteLine("Found free reagent idx {0}", idx);
                         reagentInUse[idx] = true;
                         return idx;
+                    }
+                }
                 //Console.WriteLine("Failed to find free reagent.");
                 return (uint)costSortedReagents.Count;
+            }
             private void ReleaseReagent(uint reagentIdx)
+            {
                 reagentInUse[reagentIdx] = false;
+            }
             public bool AddNextReagent()
+            {
                 bool ok = (nextReagentPos < MaxReagents);
                 if (ok)
+                {
                     uint nextReagent = NextFreeReagent(0);
                     reagents[nextReagentPos++] = nextReagent;
                     if (costSortedReagents[(int)nextReagent].IsCatalyst)
+                    {
                         ++CatalystCount;
+                    }
                     InitForQuantity(CurrentTargetQuantity);
+                }
                 return ok;
+            }
             public void InitForQuantity(uint quantity)
+            {
                 //System.Console.WriteLine("Target quantity: {0}, reagent count: {1}", quantity, reagents.Count);
                 CurrentTargetQuantity = quantity;
                 if (CurrentTargetQuantity < (10 + CatalystCount))
+                {
                     return;
+                }
                 UsedQuantity = 0;
                 uint remainingReagents = ((uint)nextReagentPos - CatalystCount);
                 uint remainingWeight = CurrentTargetQuantity - CatalystCount;
                 for (int i = 0; i < nextReagentPos; ++i)
+                {
                     Reagent reagent = Reagent(i);
                     if (reagent.IsCatalyst)
+                    {
                         currentWeights[i] = 1;
                         ++UsedQuantity;
+                    }
                     else
+                    {
                         uint weight = (uint)Math.Min(remainingWeight - (remainingReagents-1), reagent.RecipeMax);
                         remainingWeight -= weight;
                         currentWeights[i] = weight;
                         UsedQuantity += weight;
+                    }
                     --remainingReagents;
+                }
+            }
             public void SetWeight(int idx, uint quantity)
+            {
                 UsedQuantity -= currentWeights[idx];
                 currentWeights[idx] = quantity;
                 UsedQuantity += quantity;
+            }
             public void SaveState(StreamWriter writer)
+            {
                 writer.WriteLine("---SearchNode---");
                 writer.WriteLine("MaxReagents: {0}", MaxReagents);
                 writer.WriteLine("Reagents: {0}", nextReagentPos);
                 for (int i = 0; i < nextReagentPos; ++i)
+                {
                     uint idx = reagents[i];
                     uint weight = currentWeights[i];
                     writer.WriteLine("Reagent: {0},{1},{2}", idx, reagentInUse[idx] ? 1 : 0, weight);
+                }
                 // pulled from parent: List<Reagent> costSortedReagents;
                 // new on construct: PaintRecipe testRecipe = null;
                 writer.WriteLine("CurrentTargetQuantity: {0}", CurrentTargetQuantity);
                 writer.WriteLine("MaxQuantity: {0}", MaxQuantity);
                 writer.WriteLine("UsedQuantity: {0}", UsedQuantity);
                 writer.WriteLine("CatalystCount: {0}", CatalystCount);
                 writer.WriteLine("InitialCount: {0}", InitialCount);
                 writer.WriteLine("---EndNode---");
+            }
             static Regex keyValueRegex = new Regex(@"(\w+)\:\s*(.*)\s*$");
             static Regex reagentPartsRegex = new Regex(@"(?<id>\d+),(?<inUse>\d+),(?<weight>\d+)");
             public bool LoadState(StreamReader reader)
+            {
                 string line = reader.ReadLine();
                 if (!line.Equals("---SearchNode---"))
+                {
                     return false;
+                }
                 bool success = true;
                 Match match;
                 while ((line = reader.ReadLine()) != null)
+                {
                     if (line.Equals("---EndNode---"))
+                    {
                         break;
+                    }
                     match = keyValueRegex.Match(line);
                     if (match.Success)
+                    {
                         switch (match.Groups[1].Value)
+                        {
                             case "Reagents":
+                                {
                                     //int reagentCount = int.Parse(match.Groups[2].Value);
                                     for (int i = 0; i < reagents.Length; ++i)
+                                    {
                                         reagents[i] = INVALID_REAGENT;
                                         reagentInUse[i] = false;
+                                    }
                                     nextReagentPos = 0;
+                                }
                                 break;
                             case "Reagent":
+                                {
                                     Match reagentInfo = reagentPartsRegex.Match(match.Groups[2].Value);
                                     if (reagentInfo.Success)
+                                    {
                                         uint reagentId = uint.Parse(reagentInfo.Groups["id"].Value);
                                         int isInUse = int.Parse(reagentInfo.Groups["inUse"].Value);
                                         uint weight = uint.Parse(reagentInfo.Groups["weight"].Value);
                                         reagents[nextReagentPos] = reagentId;
                                         currentWeights[nextReagentPos] = weight;
                                         if (isInUse != 0)
+                                        {
                                             if (reagentId != INVALID_REAGENT)
+                                            {
                                             reagentInUse[reagentId] = true;
+                                        }
+                                        }
                                         ++nextReagentPos;
+                                    }
                                     else
+                                    {
                                         success = false;
+                                    }
+                                }
                                 break;
                             case "CurrentTargetQuantity":
+                                {
                                     uint value = uint.Parse(match.Groups[2].Value);
                                     CurrentTargetQuantity = value;
+                                }
                                 break;
                             case "MaxQuantity":
+                                {
                                     uint value = uint.Parse(match.Groups[2].Value);
                                     MaxQuantity = value;
+                                }
                                 break;
                             case "MaxReagents":
+                                {
                                     uint value = uint.Parse(match.Groups[2].Value);
                                     MaxReagents = value;
+                                }
                                 break;
                             case "UsedQuantity":
+                                {
                                     uint value = uint.Parse(match.Groups[2].Value);
                                     UsedQuantity = value;
+                                }
                                 break;
                             case "CatalystCount":
+                                {
                                     uint value = uint.Parse(match.Groups[2].Value);
                                     CatalystCount = value;
+                                }
                                 break;
                             case "InitialCount":
+                                {
                                     int value = int.Parse(match.Groups[2].Value);
                                     InitialCount = value;
+                                }
                                 break;
                             default:
                                 success = false;
                                 break;
+                        }
+                    }
                     else
+                    {
                         success = false;
                         break;
+                    }
+                }
                 return success;
+            }
+        }
         const uint DEFAULT_MAX_QUANTITY = 14; // minimum recipe: 10 base + 4 catalysts
         const uint DEFAULT_MAX_REAGENTS = 5;
         //uint maxQuantity; // maximum number of total ingredients
         uint maxReagents; // maximum number of reagents to use in the recipe
         uint fullQuantityDepth; // at or equal this number of reagents, ignore ingredient settings for max quantity
         uint fullQuantity;  // The max number of a reagent to use at full quantity
         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<SearchNode> searchQueue = new ConcurrentQueue<SearchNode>();
         int recipeCount = 0;
         List<Thread> generatorThreads = new List<Thread>();
         Object workerLock = new Object();
         bool requestCancel = false;
         // events
         public event EventHandler Finished;
         public event EventHandler Progress;
         public event EventHandler<NewRecipeEventArgs> NewRecipe;
         public RecipeGenerator(ReactionSet reactions)
+        {
             this.reactions = reactions;
             foreach (PaintColor color in Palette.Colors)
+            {
                 recipes.Add(color.Name, new PaintRecipe());
                 recipeCosts.Add(color.Name, uint.MaxValue);
+            }
+        }
         public SortedDictionary<string, PaintRecipe> Recipes
+        {
             get
+            {
                 return recipes;
+            }
+        }
         public int RecipeCount
+        {
             get
+            {
                 return recipeCount;
+            }
+        }
         public bool CanResume
+        {
             get
+            {
                 return (!running && (searchQueue.Count > 0));
+            }
+        }
         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;
+            }
             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);
                 if (reagent.Enabled)
+                {
                     costSortedReagents.Add(reagent);
+                }
+            }
             costSortedReagents.Sort(new ReagentCostSort());
+        }
         public void BeginRecipeGeneration(uint maxQuantity, uint maxReagents, uint fullQuantityDepth, uint fullQuantity)
+        {
             if (running)
+            {
                 // Already running - don't start again
                 return;
+            }
             //this.maxQuantity = maxQuantity;
             this.maxReagents = maxReagents;
             this.fullQuantity = fullQuantity;
             this.fullQuantityDepth = fullQuantityDepth;
             // first, sort reagents by cost.
             InitSortedReagents();
             this.maxReagents = (uint)Math.Min(costSortedReagents.Count, this.maxReagents);
             totalReagents = (uint)costSortedReagents.Count;
             // Pre-populate recipes list with:
             // 1) 1-ingredient recipes @ 10db for all enabled ingredients with a count >= 10
             // 2) any previously-generated recipes
             PaintRecipe recipe = new PaintRecipe();
             recipe.Reactions = reactions;
             foreach (Reagent reagent in costSortedReagents)
+            {
                 if (!reagent.IsCatalyst && reagent.RecipeMax >= 10)
+                if (!reagent.IsCatalyst && reagent.RecipeMax >= 10 && reagent.Enabled)
+                {
                     recipe.Clear();
                     recipe.AddReagent(reagent.Name, 10);
                     AddCheapestRecipe(recipe);
+                }
+            }
             while (!searchQueue.IsEmpty)
+            {
                 SearchNode node;
                 searchQueue.TryDequeue(out node);
+            }
             for (uint reagentIdx = 0; reagentIdx < costSortedReagents.Count; ++reagentIdx)
+            {
                 if (costSortedReagents[(int)reagentIdx].Enabled)
+                {
                 SearchNode initialNode = new SearchNode(costSortedReagents, reagentIdx);
                 initialNode.MaxQuantity = maxQuantity;
                 initialNode.MaxReagents = maxReagents;
                 searchQueue.Enqueue(initialNode);
+            }
+            }
             // 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;
             //System.Console.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(costSortedReagents.Count, searchQueue.Count);
             if (threadCount == 0)
+            {
                 if (Finished != null)
+                {
                     Finished(this, null);
+                }
+            }
             generatorThreads.Clear();
             for (int i = 0; i < threadCount; ++i)
+            {
                 Thread thr = new Thread(new ThreadStart(this.Generate));
                 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;
+            }
             using (StreamWriter writer = new StreamWriter(file, false))
+            {
                 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);
                 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 (SearchNode 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 "MaxReagents":
                                 maxReagents = uint.Parse(value);
                                 break;
                             case "FullQuantityDepth":
                                 fullQuantityDepth = uint.Parse(value);
                                 break;
                             case "FullQuantity":
                                 fullQuantity = uint.Parse(value);
                                 break;
                             case "TotalReagents":
                                 totalReagents = uint.Parse(value);
                                 break;
                             case "RecipeCount":
                                 recipeCount = int.Parse(value);
                                 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)
+                                {
                                     SearchNode node = new SearchNode(costSortedReagents);
                                     success = success && node.LoadState(reader);
                                     if (success)
+                                    {
                                         searchQueue.Enqueue(node);
+                                    }
+                                }
                                 break;
                             default:
                                 success = false;
                                 break;
+                        }
+                    }
                     else
+                    {
                         success = false;
                         break;
+                    }
+                }
                 return success;
+            }
+        }
         private void Generate()
+        {
             SearchNode node;
             lock(workerLock)
+            {
                 ++runningThreads;
+            }
             bool ok = true;
             do
+            {
                 lock (workerLock)
+                {
                     ok = searchQueue.TryDequeue(out node);
+                }
                 if (ok)
+                {
                     uint targetQuantity = node.MaxQuantity + 1;
                     do {
                         --targetQuantity;
                         node.InitForQuantity(targetQuantity);
                     } while (targetQuantity > 10 && (node.CurrentTargetQuantity != node.UsedQuantity));
                     while ((ok = Iterate(node)) && !requestCancel)
+                    {
                         if (Progress != null)
+                        {
                             Progress(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.IsValid)
+            {
                 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
+                    {
                         // 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 Iterate(SearchNode 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 recipee 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.InitialCount) && (node.LastReagent == (totalReagents-1)))
+                    {
                         node.RemoveLastReagent();
+                    }
                     if (node.ReagentCount == node.InitialCount)
+                    {
                         // done
                         return false;
+                    }
                     uint nextReagent = node.NextFreeReagent(node.LastReagent);
                     while ((node.ReagentCount > node.InitialCount) && (nextReagent >= totalReagents))
+                    {
                         // No more reagents to try at this level
                         node.RemoveLastReagent();
                         if (node.ReagentCount > node.InitialCount)
+                        {
                             nextReagent = node.NextFreeReagent(node.LastReagent);
+                        }
+                    }
                     if (node.ReagentCount == node.InitialCount)
+                    {
                         // done
                         return false;
+                    }
                     node.ReplaceLastReagent(nextReagent);
+                }
             } while (node.MaxQuantity < (10 + node.CatalystCount));
             node.InitForQuantity(node.MaxQuantity);
             //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 NextRecipe(SearchNode node)
+        {
             // First, run the current 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]);
+            }
             AddCheapestRecipe(node.TestRecipe);
             // check for the next recipe
             uint remainingWeight = node.CurrentTargetQuantity - node.CatalystCount;
             if (remainingWeight < 10)
+            {
                 // not possible to make a valid recipe
                 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];

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