Joonas Rikkonen
249 lines
12 KiB
C#
249 lines
12 KiB
C#
using Microsoft.Xna.Framework;
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using Barotrauma.Extensions;
|
|
|
|
namespace Barotrauma
|
|
{
|
|
class AIObjectiveFindSafety : AIObjective
|
|
{
|
|
public override string DebugTag => "find safety";
|
|
public override bool ForceRun => true;
|
|
|
|
// TODO: expose?
|
|
const float priorityIncrease = 25;
|
|
const float priorityDecrease = 10;
|
|
const float SearchHullInterval = 3.0f;
|
|
const float clearUnreachableInterval = 30;
|
|
|
|
public readonly HashSet<Hull> unreachable = new HashSet<Hull>();
|
|
|
|
private float currenthullSafety;
|
|
private float unreachableClearTimer;
|
|
private float searchHullTimer;
|
|
|
|
private AIObjectiveGoTo goToObjective;
|
|
private AIObjectiveFindDivingGear divingGearObjective;
|
|
|
|
public AIObjectiveFindSafety(Character character, AIObjectiveManager objectiveManager, float priorityModifier = 1) : base(character, objectiveManager, priorityModifier) { }
|
|
|
|
public override bool IsCompleted() => false;
|
|
public override bool CanBeCompleted => true;
|
|
|
|
public override bool IsDuplicate(AIObjective otherObjective) => otherObjective is AIObjectiveFindSafety;
|
|
|
|
public override void Update(float deltaTime)
|
|
{
|
|
if (unreachableClearTimer > 0)
|
|
{
|
|
unreachableClearTimer -= deltaTime;
|
|
}
|
|
else
|
|
{
|
|
unreachableClearTimer = clearUnreachableInterval;
|
|
unreachable.Clear();
|
|
}
|
|
if (character.CurrentHull == null)
|
|
{
|
|
currenthullSafety = 0;
|
|
Priority = 100;
|
|
return;
|
|
}
|
|
if (character.OxygenAvailable < CharacterHealth.LowOxygenThreshold) { Priority = 100; }
|
|
currenthullSafety = HumanAIController.GetHullSafety(character.CurrentHull);
|
|
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)
|
|
{
|
|
Priority = Math.Max(Priority, Math.Min(AIObjectiveManager.OrderPriority + 20, 100));
|
|
}
|
|
}
|
|
|
|
protected override void Act(float deltaTime)
|
|
{
|
|
var currentHull = character.AnimController.CurrentHull;
|
|
bool needsDivingGear = HumanAIController.NeedsDivingGear(currentHull);
|
|
bool needsDivingSuit = needsDivingGear && (currentHull == null || currentHull.WaterPercentage > 90);
|
|
bool needsEquipment = false;
|
|
if (needsDivingSuit)
|
|
{
|
|
needsEquipment = !HumanAIController.HasDivingSuit(character);
|
|
}
|
|
else if (needsDivingGear)
|
|
{
|
|
needsEquipment = !HumanAIController.HasDivingMask(character);
|
|
}
|
|
if (needsEquipment)
|
|
{
|
|
TryAddSubObjective(ref divingGearObjective,
|
|
() => new AIObjectiveFindDivingGear(character, needsDivingSuit, objectiveManager),
|
|
onAbandon: () => searchHullTimer = Math.Min(1, searchHullTimer));
|
|
}
|
|
else
|
|
{
|
|
if (divingGearObjective != null && divingGearObjective.IsCompleted())
|
|
{
|
|
// Reset the devotion.
|
|
Priority = 0;
|
|
divingGearObjective = null;
|
|
}
|
|
if (currenthullSafety < HumanAIController.HULL_SAFETY_THRESHOLD)
|
|
{
|
|
searchHullTimer = Math.Min(1, searchHullTimer);
|
|
}
|
|
if (searchHullTimer > 0.0f)
|
|
{
|
|
searchHullTimer -= deltaTime;
|
|
}
|
|
else
|
|
{
|
|
searchHullTimer = SearchHullInterval;
|
|
var bestHull = FindBestHull();
|
|
if (bestHull != null && bestHull != currentHull)
|
|
{
|
|
if (goToObjective?.Target != bestHull)
|
|
{
|
|
goToObjective = null;
|
|
}
|
|
TryAddSubObjective(ref goToObjective,
|
|
constructor: () => new AIObjectiveGoTo(bestHull, character, objectiveManager, getDivingGearIfNeeded: false)
|
|
{
|
|
// If we need diving gear, we should already have it, if possible.
|
|
AllowGoingOutside = HumanAIController.HasDivingSuit(character)
|
|
},
|
|
onAbandon: () => unreachable.Add(goToObjective.Target as Hull));
|
|
}
|
|
}
|
|
if (goToObjective != null) { return; }
|
|
if (currentHull == null) { return; }
|
|
//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;
|
|
foreach (FireSource fireSource in currentHull.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)
|
|
{
|
|
//don't run from friendly NPCs
|
|
if (enemy.TeamID == Character.TeamType.FriendlyNPC) { continue; }
|
|
//friendly NPCs don't run away from anything but characters controlled by EnemyAIController (= monsters)
|
|
if (character.TeamID == Character.TeamType.FriendlyNPC && !(enemy.AIController is EnemyAIController)) { continue; }
|
|
if (enemy.CurrentHull == currentHull && !enemy.IsDead && !enemy.IsUnconscious &&
|
|
(enemy.AIController is EnemyAIController || enemy.TeamID != character.TeamID))
|
|
{
|
|
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)
|
|
{
|
|
//only move if we haven't reached the edge of the room
|
|
if ((escapeVel.X < 0 && character.Position.X > currentHull.Rect.X + 50) ||
|
|
(escapeVel.X > 0 && character.Position.X < currentHull.Rect.Right - 50))
|
|
{
|
|
character.AIController.SteeringManager.SteeringManual(deltaTime, escapeVel);
|
|
}
|
|
else
|
|
{
|
|
character.AnimController.TargetDir = escapeVel.X < 0.0f ? Direction.Right : Direction.Left;
|
|
character.AIController.SteeringManager.Reset();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
character.AIController.SteeringManager.Reset();
|
|
}
|
|
}
|
|
}
|
|
|
|
public Hull FindBestHull(IEnumerable<Hull> ignoredHulls = null)
|
|
{
|
|
Hull bestHull = null;
|
|
float bestValue = 0;
|
|
foreach (Hull hull in Hull.hullList)
|
|
{
|
|
if (hull.Submarine == null) { continue; }
|
|
if (ignoredHulls != null && ignoredHulls.Contains(hull)) { continue; }
|
|
float hullSafety = 0;
|
|
if (character.Submarine != null && SteeringManager == PathSteering)
|
|
{
|
|
// Inside or outside near the sub
|
|
if (unreachable.Contains(hull)) { continue; }
|
|
if (!character.Submarine.IsConnectedTo(hull.Submarine)) { continue; }
|
|
hullSafety = HumanAIController.GetHullSafety(hull, character);
|
|
// Vertical distance matters more than horizontal (climbing up/down is harder than moving horizontally)
|
|
float dist = Math.Abs(character.WorldPosition.X - hull.WorldPosition.X) + Math.Abs(character.WorldPosition.Y - hull.WorldPosition.Y) * 2.0f;
|
|
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; }
|
|
// Each unsafe node reduces the hull safety value.
|
|
// Ignore current hull, because otherwise the would block all paths from the current hull to the target hull.
|
|
var path = PathSteering.PathFinder.FindPath(character.SimPosition, hull.SimPosition);
|
|
if (path.Unreachable)
|
|
{
|
|
unreachable.Add(hull);
|
|
continue;
|
|
}
|
|
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?.ToLowerInvariant() == "airlock")
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
// 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;
|
|
}
|
|
}
|
|
}
|