private void FillRandomly(List <Guid> restrictedItems,
Inventory inventory, FillOptions options, Dictionary <string, Guid> itemMap, ItemPool pool,
Random random, LogLayer log)
{
var fillLog = log.AddChild("Random Fill");
fillLog.AddChild("Restricted Items", restrictedItems.Select(key => KeyManager.GetKeyName(key)));
var reachableNodes = new List <NodeBase>();
var localSearcher = new FillSearcher();
// Fill all still reachable random nodes
int stepCount = 1;
while (true)
{
var stepLog = new LogLayer($"Step {stepCount++}");
stepLog.AddChild(inventory.GetKeyLog());
reachableNodes.RemoveAll(node => inventory.myNodes.Contains(node));
reachableNodes.AddRange(localSearcher.ContinueSearch(startNode, inventory, node => (node is KeyNode) && !inventory.myNodes.Contains(node)));
stepLog.AddChild(new LogLayer("Reachable Nodes", reachableNodes.Select(node => node.Name())));
var retracableKeys = reachableNodes.AsParallel().Where(node => node == endNode || NodeTraverser.PathExists(node, startNode, node is EventKeyNode ? inventory.Expand(node) : inventory)).ToList();
// Find all reachable events that are also possible to get back from
var retracableEvents = retracableKeys.Where(node => node is EventKeyNode);
// If any events can be reached, add to inventory and update search before continuing
if (retracableEvents.Any())
{
stepLog.AddChild("Retracable events", retracableEvents.Select(node => node.Name()));
fillLog.AddChild(stepLog);
inventory.myNodes.AddRange(retracableEvents);
continue;
}
var fillNodes = retracableKeys.Any() ? retracableKeys : reachableNodes;
var fillRandomKeyNodes = fillNodes.Where(node => node is RandomKeyNode).Select(node => node as RandomKeyNode).OrderBy(x => x.id);
var addedNodes = FillRandomly(fillRandomKeyNodes, restrictedItems, inventory, options, itemMap, pool, random, stepLog);
if (!addedNodes)
{
break;
}
fillLog.AddChild(stepLog);
}
}
private Guid FindRelevantKey(Inventory inventory, FillSearcher aSearcher, FillOptions options,
IEnumerable <RandomKeyNode> availableLocations, IEnumerable <NodeBase> unRetracableKeys,
IEnumerable <Guid> restrictedItems, IEnumerable <Guid> prioritizedItems,
ItemPool pool, Dictionary <string, Guid> itemMap,
Random random, LogLayer log)
{
var relevantKeyLog = log.AddChild("Relevant Key");
var relevantKeys = new Dictionary <Guid, List <NodeBase> >();
foreach (var item in pool.AvailableItems().Distinct().Where(key => !restrictedItems.Contains(key)))
{
var testInventory = inventory.Expand(KeyManager.GetKey(item));
var tempSearcher = new FillSearcher(aSearcher);
var currentKeyLog = relevantKeyLog.AddChild(KeyManager.GetKeyName(item));
var reachableKeys = new List <NodeBase>();
bool searchAgain;
do
{
// Find all nodes that can be reached with current inventory
reachableKeys.RemoveAll(node => testInventory.myNodes.Contains(node));
reachableKeys.AddRange(tempSearcher.ContinueSearch(testInventory, node => (node is KeyNode) && !testInventory.myNodes.Contains(node)));
var combinedReachableKeys = unRetracableKeys.Where(key => !testInventory.myNodes.Contains(key)).Union(reachableKeys);
searchAgain = false;
var retracableKeys = combinedReachableKeys.AsParallel().Where(node => node == endNode || NodeTraverser.PathExists(node, startNode, node is EventKeyNode ? testInventory.Expand(node) : testInventory)).ToList();
if (retracableKeys.Any())
{
// If any events can be reached, add to inventory and update search before continuing
var retracableEvents = retracableKeys.Where(node => node is EventKeyNode).ToList();
if (retracableEvents.Any())
{
currentKeyLog.AddChild("Retracable events", retracableEvents.Select(node => node.Name()));
testInventory.myNodes.AddRange(retracableEvents);
// Prioritize item that will let you beat the game
if (retracableEvents.Any(node => node == endNode))
{
relevantKeyLog.Message += $" : {KeyManager.GetKeyName(item)}";
return(item);
}
searchAgain = true;
continue;
}
var randomizedLocations = retracableKeys.Where(key => key is RandomKeyNode randomNode).Select(key => key as RandomKeyNode).OrderBy(x => x.id).ToList();
// Pick up any items already filled in on the map and update search before placing any items
var preFilledLocations = randomizedLocations.Where(loc => itemMap.ContainsKey(loc.myRandomKeyIdentifier));
if (preFilledLocations.Any())
{
currentKeyLog.AddChild("Prefilled locations", preFilledLocations.Select(node => $"{node.Name()} - {node.GetKeyName()}"));
testInventory.myNodes.AddRange(preFilledLocations);
searchAgain = true;
continue;
}
currentKeyLog.AddChild($"Locations", retracableKeys.Select(key => key.Name()));
relevantKeys.Add(item, retracableKeys);
}
} while (searchAgain);
}
// Filter out any keys that by rules cannot be placed in any available location
var filteredKeys = relevantKeys.Where(key => availableLocations.Any(location => KeyAllowedInLocation(key.Key, options, itemMap, pool, location))).ToDictionary(key => key.Key, key => key.Value);
relevantKeyLog.AddChild("Filtered Keys", filteredKeys.Select(key => $"{KeyManager.GetKeyName(key.Key)}"));
if (!filteredKeys.Any())
{
return(Guid.Empty);
}
// Correlate prioritized and relevant keys
var prioritizedRelevantKeys = filteredKeys.Where(key => prioritizedItems.Contains(key.Key));
if (prioritizedRelevantKeys.Any())
{
filteredKeys = prioritizedRelevantKeys.ToDictionary(key => key.Key, key => key.Value);
}
relevantKeyLog.AddChild("Prioritized Relevant Keys", filteredKeys.Select(key => $"{KeyManager.GetKeyName(key.Key)}"));
// Prioritize items that open up major location for local swaps
if (options.majorSwap == FillOptions.ItemSwap.LocalPool || options.minorSwap == FillOptions.ItemSwap.LocalPool)
{
var keysWithMajorLocation = filteredKeys.Where(key => key.Value.Any(location => StaticKeys.IsMajorLocation(location)));
if (keysWithMajorLocation.Any())
{
filteredKeys = keysWithMajorLocation.ToDictionary(key => key.Key, key => key.Value);
}
}
// Avoid sprawl calculation bias if value is not set or there is only one item to choose from
if (options.SprawlFactor == 0 || filteredKeys.Count < 2)
{
var item = pool.PeekAmong(filteredKeys.Keys, random);
relevantKeyLog.Message += $" : {KeyManager.GetKeyName(item)}";
relevantKeyLog.AddChild($"Item pulled from pool: {KeyManager.GetKeyName(item)}");
return(item);
}
relevantKeyLog.AddChild($"Sprawl factor: {options.SprawlFactor}");
// Translate sprawl factor to a decimal
var sprawl = ((double)options.SprawlFactor) / 10;
// Weight is numberOfLocationsUnlocked ^ sprawl
var keysGroupedByWeight = filteredKeys.ToLookup(key => key.Value.Count, key => key.Key).Select(group => new KeyValuePair <double, List <Guid> >(Math.Pow(group.Key, sprawl), group.ToList())).OrderBy(pair => pair.Key);
relevantKeyLog.AddChild("Keys with weights", keysGroupedByWeight.SelectMany(group => group.Value.Select(key => $"{KeyManager.GetKeyName(key)} - {group.Key}")));
// Sum of all weights
var weightSum = keysGroupedByWeight.Select(pair => pair.Key).Sum();
relevantKeyLog.AddChild($"Sum of Weights: {weightSum}");
// Pick random number between 0 and weightSum
var weightRandom = random.NextDouble() * weightSum;
relevantKeyLog.AddChild($"Weight Random: {weightRandom}");
// Remove weight from random value until it goes below zero then pick that key
foreach (var key in keysGroupedByWeight)
{
weightRandom -= key.Key;
if (weightRandom < 0)
{
relevantKeyLog.AddChild($"Chosen weight: {key.Key}");
var item = pool.PeekAmong(key.Value, random);
relevantKeyLog.Message += $" : {KeyManager.GetKeyName(item)}";
relevantKeyLog.AddChild($"Selected Key: {KeyManager.GetKeyName(item)}");
return(item);
}
}
relevantKeyLog.AddChild($"No Key Selected");
return(Guid.Empty);
}
public Dictionary <string, Guid> FillLocations(SaveData someData, FillOptions options, ItemPool pool, Inventory startingInventory, Random random, Dictionary <string, Guid> originalItemMap)
{
Log = new LogLayer("Item Placement");
var inventory = new Inventory(startingInventory);
var nodeCollection = new NodeCollection();
nodeCollection.InitializeNodes(someData);
keyNodes = nodeCollection.myNodes.Where(node => node is KeyNode).ToList();
var eventNodes = keyNodes.Where(node => node is EventKeyNode).Select(node => node as EventKeyNode);
startNode = eventNodes.FirstOrDefault(node => node.myKeyId == StaticKeys.GameStart);
endNode = eventNodes.FirstOrDefault(node => node.myKeyId == StaticKeys.GameFinish);
charlieNode = eventNodes.FirstOrDefault(node => node.myKeyId == StaticKeys.CharlieDefeated);
// Generate Item map
var itemMap = new Dictionary <string, Guid>(originalItemMap);
if (options.majorSwap == FillOptions.ItemSwap.Unchanged || options.minorSwap == FillOptions.ItemSwap.Unchanged)
{
var allRandomKeyNodes = keyNodes.Where(node => node is RandomKeyNode randomNode).Select(node => node as RandomKeyNode).OrderBy(node => node.id);
var openRandomKeyNodes = allRandomKeyNodes.Where(node => !itemMap.ContainsKey(node.myRandomKeyIdentifier));
foreach (var keyNode in openRandomKeyNodes)
{
var item = keyNode.GetOriginalKey();
if (item == null)
{
continue;
}
if ((StaticKeys.IsMajorItem(item.Id) && options.majorSwap == FillOptions.ItemSwap.Unchanged) ||
(StaticKeys.IsMinorItem(item.Id) && options.minorSwap == FillOptions.ItemSwap.Unchanged))
{
var pulled = pool.Pull(item.Id);
if (pulled)
{
itemMap.Add(keyNode.myRandomKeyIdentifier, item.Id);
}
}
}
}
KeyManager.SetRandomKeyMap(itemMap);
// Set up location rules
itemRequiredLocationRules = ItemRuleUtility.GetRequiredLocationRules(options.itemRules);
itemBlockedLocationRules = ItemRuleUtility.GetBlockedLocationRules(options.itemRules);
restrictedLocations = new HashSet <string>();
if (itemRequiredLocationRules.Any())
{
Log.AddChild("RequiredLocationRules", itemRequiredLocationRules.Select(group => new LogLayer(KeyManager.GetKeyName(group.Key), group.Value)));
}
if (itemBlockedLocationRules.Any())
{
Log.AddChild("BlockedLocationRules", itemBlockedLocationRules.Select(group => new LogLayer(KeyManager.GetKeyName(group.Key), group.Value)));
}
UpdateLocationRestrictions(inventory, itemMap, pool, random, Log);
// Initialize search terms
searcher = new FillSearcher();
var reachableKeys = new List <NodeBase>();
var retracableKeys = new List <NodeBase>();
var restrictedItems = new List <Guid>();
var searchDepth = 0;
var stepCount = 1;
if (options.gameCompletion == FillOptions.GameCompletion.NoLogic)
{
Log.AddChild("Game Completion has No Logic - Skipping standard steps");
}
else
{
var logSteps = Log.AddChild("Standard Steps");
while (true)
{
var logCurrentStep = logSteps.AddChild($"Step {stepCount++}, depth {searchDepth}");
logCurrentStep.AddChild(inventory.GetKeyLog());
// Beatable conditional
if (options.gameCompletion == FillOptions.GameCompletion.Beatable && inventory.myNodes.Contains(endNode))
{
logCurrentStep.AddChild($"EndNode reached");
break;
}
// Do not place any power bombs until obtaining powered suit
restrictedItems.Clear();
if (options.noEarlyPbs && !inventory.ContainsKey(StaticKeys.CharlieDefeated))
{
restrictedItems.Add(StaticKeys.PowerBombs);
}
var itemDepthRestrictions = options.itemRules.Where(rest => rest is ItemRuleRestrictedBeforeDepth depthRest && depthRest.SearchDepth > searchDepth);
if (itemDepthRestrictions.Any())
{
restrictedItems.AddRange(itemDepthRestrictions.Select(rest => rest.ItemId));
}
if (restrictedItems.Any())
{
logCurrentStep.AddChild("Restricted Items", restrictedItems.Select(key => KeyManager.GetKeyName(key)));
}
// Find all nodes that can be reached with current inventory
reachableKeys.RemoveAll(node => inventory.myNodes.Contains(node));
reachableKeys.AddRange(searcher.ContinueSearch(startNode, inventory, node => (node is KeyNode) && !inventory.myNodes.Contains(node)));
logCurrentStep.AddChild("Reachable keys", reachableKeys.Select(node => node.Name()));
// Find all reachable keys that are also possible to get back from
// (End node is always considered retracable, since being able to reach it at all is just akin to "being in go mode")
retracableKeys.RemoveAll(node => inventory.myNodes.Contains(node));
var notRetracable = reachableKeys.Except(retracableKeys);
retracableKeys.AddRange(notRetracable.AsParallel().Where(node => node == endNode || NodeTraverser.PathExists(node, startNode, node is EventKeyNode ? inventory.Expand(node) : inventory)).ToList());
logCurrentStep.AddChild("Retracable keys", retracableKeys.Select(node => node.Name()));
if (!retracableKeys.Any())
{
break;
}
// If any events can be reached, add to inventory and update search before continuing
var retracableEvents = retracableKeys.Where(node => node is EventKeyNode).ToList();
if (retracableEvents.Any())
{
logCurrentStep.AddChild("Retracable events", retracableEvents.Select(node => node.Name()));
inventory.myNodes.AddRange(retracableEvents);
continue;
}
var randomizedLocations = retracableKeys.Where(key => key is RandomKeyNode randomNode).Select(key => key as RandomKeyNode).OrderBy(x => x.id).ToList();
// Pick up any items already filled in on the map and update search before placing any items
var preFilledLocations = randomizedLocations.Where(loc => itemMap.ContainsKey(loc.myRandomKeyIdentifier));
if (preFilledLocations.Any())
{
logCurrentStep.AddChild("Prefilled locations", preFilledLocations.Select(node => $"{node.Name()} - {node.GetKeyName()}"));
inventory.myNodes.AddRange(preFilledLocations);
continue;
}
// Get items that are prioritized according to item rules
var prioritizedItems = options.itemRules.Where(rest => rest is ItemRulePrioritizedAfterDepth depthRest && depthRest.SearchDepth <= searchDepth)
.Select(rest => rest.ItemId)
.Where(item => !restrictedItems.Contains(item) && !inventory.ContainsKey(item))
.ToList();
logCurrentStep.AddChild("Prioritized Items", prioritizedItems.Select(key => KeyManager.GetKeyName(key)));
var selectedRelevantKey = FindRelevantKey(inventory, searcher, options, randomizedLocations, reachableKeys.Except(retracableKeys), restrictedItems, prioritizedItems, pool, itemMap, random, logCurrentStep);
// Special case to handle how chozodia area is built
// Specifically can't get out of it without power bombs, which creates awkward dynamics regarding the placements of said power bombs)
// Special case triggers on reaching charlie when no early pbs is enabled
if (reachableKeys.Any(key => key is EventKeyNode eventKey && eventKey.myKeyId == StaticKeys.CharlieDefeated) && options.noEarlyPbs &&
(NodeTraverser.PathExists(charlieNode, endNode, inventory.Expand(charlieNode)) || selectedRelevantKey == Guid.Empty))
{
FillRandomly(restrictedItems, inventory, options, itemMap, pool, random, logCurrentStep.AddChild("Charlie random fill"));
if (!inventory.ContainsKey(StaticKeys.CharlieDefeated))
{
// Unless Charlie was for some reason reached during fill, start new search with Charlie as new start node
startNode = charlieNode;
inventory.myNodes.Add(startNode);
searcher = new FillSearcher();
}
continue;
}
if (selectedRelevantKey == Guid.Empty)
{
break;
}
// Filter out available locations where selected key cannot be placed
var filteredLocations = randomizedLocations.Where(location => KeyAllowedInLocation(selectedRelevantKey, options, itemMap, pool, location)).OrderBy(x => x.id).ToList();
logCurrentStep.AddChild("Filtered Locations", filteredLocations.Select(node => node.Name()));
if (!filteredLocations.Any())
{
break;
}
pool.Pull(selectedRelevantKey);
// Pick out one random accessible location, place the selected key there and add that item to inventory
var selectedLocation = filteredLocations.ElementAt(random.Next(filteredLocations.Count));
randomizedLocations.Remove(selectedLocation);
itemMap.Add(selectedLocation.myRandomKeyIdentifier, selectedRelevantKey);
inventory.myNodes.Add(selectedLocation);
logCurrentStep.AddChild($"Selected Location: {selectedLocation.Name()}");
prioritizedItems.Remove(selectedRelevantKey);
// Only increase searchDepth if an actual item is placed (debatable if this is the correct approach)
searchDepth++;
UpdateLocationRestrictions(inventory, itemMap, pool, random, logCurrentStep);
// Fill remaining accessible locations with random items
if (options.majorSwap != FillOptions.ItemSwap.LocalPool && options.minorSwap != FillOptions.ItemSwap.LocalPool)
{
var randomizedLocationLog = logCurrentStep.AddChild("Randomized Locations");
foreach (var node in randomizedLocations)
{
var locationLog = randomizedLocationLog.AddChild(node.Name());
// This is possible through Required Location Rules
if (itemMap.ContainsKey(node.myRandomKeyIdentifier))
{
locationLog.AddChild($"Already filled with: {node.GetKeyName()}");
inventory.myNodes.Add(node);
continue;
}
var filteredPrioritizedItems = prioritizedItems.Where(key => KeyAllowedInLocation(key, options, itemMap, pool, node));
if (filteredPrioritizedItems.Any())
{
locationLog.AddChild("Filtered Prioritized Items", filteredPrioritizedItems.Select(key => KeyManager.GetKeyName(key)));
var randomKey = pool.PullAmong(filteredPrioritizedItems, random);
prioritizedItems.Remove(randomKey);
itemMap.Add(node.myRandomKeyIdentifier, randomKey);
inventory.myNodes.Add(node);
locationLog.Message += $" : {KeyManager.GetKeyName(randomKey)}";
locationLog.AddChild($"Prioritized Key placed: {KeyManager.GetKeyName(randomKey)}");
}
else
{
// Add all items that cannot be in this location to restrictedItems
var locationRestrictedItems = restrictedItems.Union(pool.AvailableItems().Where(key => !KeyAllowedInLocation(key, options, itemMap, pool, node)));
locationLog.AddChild("Location Restricted Items", locationRestrictedItems.Select(key => KeyManager.GetKeyName(key)));
var selectedKey = pool.PullExcept(locationRestrictedItems, random);
if (selectedKey != Guid.Empty)
{
itemMap.Add(node.myRandomKeyIdentifier, selectedKey);
inventory.myNodes.Add(node);
locationLog.Message += $" : {KeyManager.GetKeyName(selectedKey)}";
locationLog.AddChild($"Selected Key placed: {KeyManager.GetKeyName(selectedKey)}");
}
}
UpdateLocationRestrictions(inventory, itemMap, pool, random, locationLog);
}
}
// Go back to start of loop to continue search with updated inventory
}
}
var postFillLog = Log.AddChild("Post fill");
// POST-FILL:
// Reachable if seed is beatable or if it ran out of possible relevant keys
// Fill in remaining locations as well as possible without breaking any restrictions
// Do not place any power bombs until obtaining powered suit
restrictedItems.Clear();
if (options.noEarlyPbs && !inventory.ContainsKey(StaticKeys.CharlieDefeated))
{
restrictedItems.Add(StaticKeys.PowerBombs);
}
postFillLog.AddChild("Restricted Items", restrictedItems.Select(key => KeyManager.GetKeyName(key)));
if (options.gameCompletion == FillOptions.GameCompletion.AllItems)
{
var nonEmptyLog = postFillLog.AddChild("Add non-empty items");
// Prioritize filling in non-empty items
var restrictedAndEmpty = new List <Guid>(restrictedItems);
restrictedAndEmpty.Add(StaticKeys.Nothing);
FillRandomly(restrictedAndEmpty, inventory, options, itemMap, pool, random, nonEmptyLog);
}
var reachableLog = postFillLog.AddChild("Fill remaining reachable locations");
// Fill remaining reachable nodes randomly
FillRandomly(restrictedItems, inventory, options, itemMap, pool, random, reachableLog);
restrictedItems.Clear();
// Fill all remaining (unreachable) locations with any remaining items
var remainingNodes = keyNodes.Where(node => node is RandomKeyNode randomNode && !itemMap.ContainsKey(randomNode.myRandomKeyIdentifier)).Select(key => key as RandomKeyNode).OrderBy(x => x.id);
if (remainingNodes.Any())
{
var respectableLog = postFillLog.AddChild("Fill unreachable locations");
FillRandomly(remainingNodes, restrictedItems, inventory, options, itemMap, pool, random, respectableLog);
}
// Fill final locations with blanks
var finalEmptyLocations = keyNodes.Where(node => node is RandomKeyNode randomNode && !itemMap.ContainsKey(randomNode.myRandomKeyIdentifier)).Select(key => key as RandomKeyNode).OrderBy(x => x.id);
if (finalEmptyLocations.Any())
{
var finalFill = postFillLog.AddChild("Final fill");
foreach (var node in finalEmptyLocations)
{
if (itemMap.ContainsKey(node.myRandomKeyIdentifier))
{
continue;
}
var locationLog = finalFill.AddChild(node.myRandomKeyIdentifier);
var item = StaticKeys.Nothing;
locationLog.Message += $" : {KeyManager.GetKeyName(item)}";
locationLog.AddChild($"Selected item: {KeyManager.GetKeyName(item)}");
itemMap.Add(node.myRandomKeyIdentifier, item);
UpdateLocationRestrictions(inventory, itemMap, pool, random, locationLog);
}
}
return(itemMap);
}