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(61d00a474) v0.9.7.1

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Regalis
2020-03-04 13:04:10 +01:00
parent 3c50efa5c9
commit 3c09ebe02f
5086 changed files with 786063 additions and 295871 deletions
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Barotrauma/BarotraumaShared/SharedSource/Characters/AI/Objectives/AIObjectiveFindSafety.cs
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using Microsoft.Xna.Framework;
using System;
using System.Collections.Generic;
using System.Linq;
namespace Barotrauma
{
class AIObjectiveFindSafety : AIObjective
{
public override string DebugTag => "find safety";
public override bool ForceRun => true;
public override bool KeepDivingGearOn => true;
public override bool IgnoreUnsafeHulls => true;
public override bool ConcurrentObjectives => true;
public override bool IsLoop { get => true; set => throw new System.Exception("Trying to set the value for IsLoop from: " + System.Environment.StackTrace); }
// TODO: expose?
const float priorityIncrease = 100;
const float priorityDecrease = 10;
const float SearchHullInterval = 3.0f;
private float currenthullSafety;
private float searchHullTimer;
private AIObjectiveGoTo goToObjective;
private AIObjectiveFindDivingGear divingGearObjective;
public AIObjectiveFindSafety(Character character, AIObjectiveManager objectiveManager, float priorityModifier = 1) : base(character, objectiveManager, priorityModifier) { }
protected override bool Check() => false;
public override bool CanBeCompleted => true;
private bool resetPriority;
public override float GetPriority() => Priority;
public override void Update(float deltaTime)
{
if (resetPriority)
{
Priority = 0;
resetPriority = false;
return;
}
if (character.CurrentHull == null)
{
currenthullSafety = 0;
Priority = objectiveManager.CurrentOrder is AIObjectiveGoTo ? 0 : 100;
return;
}
if (HumanAIController.NeedsDivingGear(character, character.CurrentHull, out _) && !HumanAIController.HasDivingGear(character))
{
Priority = 100;
}
currenthullSafety = HumanAIController.CurrentHullSafety;
if (currenthullSafety > HumanAIController.HULL_SAFETY_THRESHOLD)
{
Priority -= priorityDecrease * deltaTime;
}
else
{
float dangerFactor = (100 - currenthullSafety) / 100;
Priority += dangerFactor * priorityIncrease * deltaTime;
}
Priority = MathHelper.Clamp(Priority, 0, 100);
if (divingGearObjective != null && !divingGearObjective.IsCompleted && divingGearObjective.CanBeCompleted)
{
// Boost the priority while seeking the diving gear
Priority = Math.Max(Priority, Math.Min(AIObjectiveManager.OrderPriority + 20, 100));
}
}
private Hull currentSafeHull;
private Hull previousSafeHull;
protected override void Act(float deltaTime)
{
var currentHull = character.CurrentHull;
bool needsDivingGear = HumanAIController.NeedsDivingGear(character, currentHull, out bool needsDivingSuit);
bool needsEquipment = false;
if (needsDivingSuit)
{
needsEquipment = !HumanAIController.HasDivingSuit(character, AIObjectiveFindDivingGear.lowOxygenThreshold);
}
else if (needsDivingGear)
{
needsEquipment = !HumanAIController.HasDivingGear(character, AIObjectiveFindDivingGear.lowOxygenThreshold);
}
if (needsEquipment && divingGearObjective == null && !character.LockHands)
{
RemoveSubObjective(ref goToObjective);
TryAddSubObjective(ref divingGearObjective,
constructor: () => new AIObjectiveFindDivingGear(character, needsDivingSuit, objectiveManager),
onAbandon: () =>
{
searchHullTimer = Math.Min(1, searchHullTimer);
// Don't reset the diving gear objective, because it's possible that there is no diving gear -> seek a safe hull and then reset so that we can check again.
},
onCompleted: () =>
{
resetPriority = true;
searchHullTimer = Math.Min(1, searchHullTimer);
RemoveSubObjective(ref divingGearObjective);
});
}
else if (divingGearObjective == null || !divingGearObjective.CanBeCompleted)
{
if (currenthullSafety < HumanAIController.HULL_SAFETY_THRESHOLD)
{
searchHullTimer = Math.Min(1, searchHullTimer);
}
if (searchHullTimer > 0.0f)
{
searchHullTimer -= deltaTime;
}
else
{
searchHullTimer = SearchHullInterval * Rand.Range(0.9f, 1.1f);
previousSafeHull = currentSafeHull;
currentSafeHull = FindBestHull();
if (currentSafeHull == null)
{
currentSafeHull = previousSafeHull;
}
if (currentSafeHull != null && currentSafeHull != currentHull)
{
if (goToObjective?.Target != currentSafeHull)
{
RemoveSubObjective(ref goToObjective);
}
TryAddSubObjective(ref goToObjective,
constructor: () => new AIObjectiveGoTo(currentSafeHull, character, objectiveManager, getDivingGearIfNeeded: true)
{
AllowGoingOutside = HumanAIController.HasDivingSuit(character, conditionPercentage: 50)
},
onCompleted: () =>
{
if (currenthullSafety > HumanAIController.HULL_SAFETY_THRESHOLD ||
HumanAIController.NeedsDivingGear(character, currentHull, out bool needsSuit) && (needsSuit ? HumanAIController.HasDivingSuit(character) : HumanAIController.HasDivingMask(character)))
{
resetPriority = true;
searchHullTimer = Math.Min(1, searchHullTimer);
}
RemoveSubObjective(ref goToObjective);
// If diving gear objective failed, let's reset it here.
RemoveSubObjective(ref divingGearObjective);
},
onAbandon: () =>
{
// Don't ignore any hulls if outside, because apparently it happens that we can't find a path, in which case we just want to try again.
// If we ignore the hull, it might be the only airlock in the target sub, which ignores the whole sub.
if (currentHull != null && goToObjective != null)
{
if (goToObjective.Target is Hull hull)
{
HumanAIController.UnreachableHulls.Add(hull);
}
}
RemoveSubObjective(ref goToObjective);
});
}
else
{
RemoveSubObjective(ref goToObjective);
}
}
if (subObjectives.Any(so => so.CanBeCompleted)) { return; }
if (currentHull != null)
{
//goto objective doesn't exist (a safe hull not found, or a path to a safe hull not found)
// -> attempt to manually steer away from hazards
Vector2 escapeVel = Vector2.Zero;
// TODO: optimize
foreach (FireSource fireSource in HumanAIController.VisibleHulls.SelectMany(h => h.FireSources))
{
Vector2 dir = character.Position - fireSource.Position;
float distMultiplier = MathHelper.Clamp(100.0f / Vector2.Distance(fireSource.Position, character.Position), 0.1f, 10.0f);
escapeVel += new Vector2(Math.Sign(dir.X) * distMultiplier, !character.IsClimbing ? 0 : Math.Sign(dir.Y) * distMultiplier);
}
foreach (Character enemy in Character.CharacterList)
{
if (!HumanAIController.IsActive(enemy) || HumanAIController.IsFriendly(enemy)) { continue; }
if (HumanAIController.VisibleHulls.Contains(enemy.CurrentHull))
{
Vector2 dir = character.Position - enemy.Position;
float distMultiplier = MathHelper.Clamp(100.0f / Vector2.Distance(enemy.Position, character.Position), 0.1f, 10.0f);
escapeVel += new Vector2(Math.Sign(dir.X) * distMultiplier, !character.IsClimbing ? 0 : Math.Sign(dir.Y) * distMultiplier);
}
}
if (escapeVel != Vector2.Zero)
{
float left = currentHull.Rect.X + 50;
float right = currentHull.Rect.Right - 50;
//only move if we haven't reached the edge of the room
if (escapeVel.X < 0 && character.Position.X > left || escapeVel.X > 0 && character.Position.X < right)
{
character.AIController.SteeringManager.SteeringManual(deltaTime, escapeVel);
}
else
{
character.AnimController.TargetDir = escapeVel.X < 0.0f ? Direction.Right : Direction.Left;
character.AIController.SteeringManager.Reset();
}
return;
}
}
objectiveManager.GetObjective<AIObjectiveIdle>().Wander(deltaTime);
}
}
public Hull FindBestHull(IEnumerable<Hull> ignoredHulls = null, bool allowChangingTheSubmarine = true)
{
Hull bestHull = null;
float bestValue = 0;
foreach (Hull hull in Hull.hullList)
{
if (hull.Submarine == null) { continue; }
if (!allowChangingTheSubmarine && hull.Submarine != character.Submarine) { continue; }
if (ignoredHulls != null && ignoredHulls.Contains(hull)) { continue; }
if (HumanAIController.UnreachableHulls.Contains(hull)) { continue; }
float hullSafety = 0;
if (character.CurrentHull != null && character.Submarine != null)
{
// Inside
if (!character.Submarine.IsConnectedTo(hull.Submarine)) { continue; }
hullSafety = HumanAIController.GetHullSafety(hull, hull.GetConnectedHulls(true, 1), character);
float yDist = Math.Abs(character.WorldPosition.Y - hull.WorldPosition.Y);
yDist = yDist > 100 ? yDist * 3 : 0;
float dist = Math.Abs(character.WorldPosition.X - hull.WorldPosition.X) + yDist;
float distanceFactor = MathHelper.Lerp(1, 0.9f, MathUtils.InverseLerp(0, 10000, dist));
hullSafety *= distanceFactor;
//skip the hull if the safety is already less than the best hull
//(no need to do the expensive pathfinding if we already know we're not going to choose this hull)
if (hullSafety < bestValue) { continue; }
// Don't allow to go outside if not already outside.
var path = character.CurrentHull != null ?
PathSteering.PathFinder.FindPath(character.SimPosition, hull.SimPosition, nodeFilter: node => node.Waypoint.CurrentHull != null) :
PathSteering.PathFinder.FindPath(character.SimPosition, hull.SimPosition);
if (path.Unreachable && character.CurrentHull != null)
{
HumanAIController.UnreachableHulls.Add(hull);
continue;
}
// Each unsafe node reduces the hull safety value.
// Ignore the current hull, because otherwise we couldn't find a path out.
int unsafeNodes = path.Nodes.Count(n => n.CurrentHull != character.CurrentHull && HumanAIController.UnsafeHulls.Contains(n.CurrentHull));
hullSafety /= 1 + unsafeNodes;
// If the target is not inside a friendly submarine, considerably reduce the hull safety.
if (!character.Submarine.IsEntityFoundOnThisSub(hull, true))
{
hullSafety /= 10;
}
}
else
{
// Outside
if (hull.RoomName != null && hull.RoomName.Contains("airlock", StringComparison.OrdinalIgnoreCase))
{
hullSafety = 100;
}
else
{
// TODO: could also target gaps that get us inside?
foreach (Item item in Item.ItemList)
{
if (item.CurrentHull != hull && item.HasTag("airlock"))
{
hullSafety = 100;
break;
}
}
}
// TODO: could we get a closest door to the outside and target the flowing hull if no airlock is found?
// Huge preference for closer targets
float distance = Vector2.DistanceSquared(character.WorldPosition, hull.WorldPosition);
float distanceFactor = MathHelper.Lerp(1, 0.2f, MathUtils.InverseLerp(0, MathUtils.Pow(100000, 2), distance));
hullSafety *= distanceFactor;
// If the target is not inside a friendly submarine, considerably reduce the hull safety.
if (hull.Submarine.TeamID != character.TeamID && hull.Submarine.TeamID != Character.TeamType.FriendlyNPC)
{
hullSafety /= 10;
}
}
if (hullSafety > bestValue)
{
bestHull = hull;
bestValue = hullSafety;
}
}
return bestHull;
}
}
}