673 lines
26 KiB
C#
673 lines
26 KiB
C#
using Barotrauma.Networking;
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using FarseerPhysics;
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using FarseerPhysics.Dynamics;
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using FarseerPhysics.Dynamics.Contacts;
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using Microsoft.Xna.Framework;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Xml.Linq;
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namespace Barotrauma
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{
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partial class LevelTrigger
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{
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[Flags]
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enum TriggererType
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{
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None = 0,
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Human = 1,
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Creature = 2,
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Character = Human | Creature,
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Submarine = 4,
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Item = 8,
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OtherTrigger = 16
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}
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public enum TriggerForceMode
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{
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Force, //default, apply a force to the object over time
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Acceleration, //apply an acceleration to the object, ignoring it's mass
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Impulse, //apply an instant force, ignoring deltaTime
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LimitVelocity //clamp the velocity of the triggerer to some value
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}
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public Action<LevelTrigger, Entity> OnTriggered;
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/// <summary>
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/// Effects applied to entities that are inside the trigger
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/// </summary>
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private readonly List<StatusEffect> statusEffects = new List<StatusEffect>();
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/// <summary>
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/// Attacks applied to entities that are inside the trigger
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/// </summary>
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private readonly List<Attack> attacks = new List<Attack>();
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private readonly float cameraShake;
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private Vector2 unrotatedForce;
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private float forceFluctuationTimer, currentForceFluctuation = 1.0f;
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private readonly HashSet<Entity> triggerers = new HashSet<Entity>();
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private readonly TriggererType triggeredBy;
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private readonly float randomTriggerInterval;
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private readonly float randomTriggerProbability;
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private float randomTriggerTimer;
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private float triggeredTimer;
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private readonly HashSet<string> tags = new HashSet<string>();
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//other triggers have to have at least one of these tags to trigger this one
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private readonly HashSet<string> allowedOtherTriggerTags = new HashSet<string>();
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/// <summary>
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/// How long the trigger stays in the triggered state after triggerers have left
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/// </summary>
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private readonly float stayTriggeredDelay;
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public LevelTrigger ParentTrigger;
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public Dictionary<Entity, Vector2> TriggererPosition
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{
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get;
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private set;
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}
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private Vector2 worldPosition;
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public Vector2 WorldPosition
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{
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get { return worldPosition; }
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set
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{
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worldPosition = value;
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PhysicsBody?.SetTransform(ConvertUnits.ToSimUnits(value), PhysicsBody.Rotation);
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}
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}
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public float Rotation
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{
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get { return PhysicsBody == null ? 0.0f : PhysicsBody.Rotation; }
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set
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{
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if (PhysicsBody == null) return;
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PhysicsBody.SetTransform(PhysicsBody.Position, value);
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CalculateDirectionalForce();
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}
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}
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public PhysicsBody PhysicsBody { get; private set; }
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public float TriggerOthersDistance { get; private set; }
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public IEnumerable<Entity> Triggerers
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{
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get { return triggerers.AsEnumerable(); }
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}
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public bool IsTriggered
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{
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get
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{
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return (triggerers.Count > 0 || triggeredTimer > 0.0f) &&
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(ParentTrigger == null || ParentTrigger.IsTriggered);
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}
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}
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public Vector2 Force
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{
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get;
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private set;
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}
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/// <summary>
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/// does the force diminish by distance
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/// </summary>
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public bool ForceFalloff
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{
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get;
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private set;
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}
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public float ForceFluctuationInterval
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{
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get;
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private set;
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}
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public float ForceFluctuationStrength
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{
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get;
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private set;
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}
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private readonly TriggerForceMode forceMode;
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public TriggerForceMode ForceMode
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{
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get { return forceMode; }
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}
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/// <summary>
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/// Stop applying forces to objects if they're moving faster than this
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/// </summary>
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public float ForceVelocityLimit
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{
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get;
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private set;
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}
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public float ColliderRadius
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{
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get;
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private set;
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}
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public bool UseNetworkSyncing
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{
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get;
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private set;
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}
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public bool NeedsNetworkSyncing
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{
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get;
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set;
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}
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public string InfectIdentifier
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{
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get;
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set;
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}
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public float InfectionChance
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{
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get;
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set;
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}
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private bool triggeredOnce;
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private readonly bool triggerOnce;
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public LevelTrigger(XElement element, Vector2 position, float rotation, float scale = 1.0f, string parentDebugName = "")
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{
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TriggererPosition = new Dictionary<Entity, Vector2>();
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worldPosition = position;
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if (element.Attributes("radius").Any() || element.Attributes("width").Any() || element.Attributes("height").Any())
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{
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PhysicsBody = new PhysicsBody(element, scale)
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{
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CollisionCategories = Physics.CollisionLevel,
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CollidesWith = Physics.CollisionCharacter | Physics.CollisionItem | Physics.CollisionProjectile | Physics.CollisionWall
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};
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PhysicsBody.FarseerBody.OnCollision += PhysicsBody_OnCollision;
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PhysicsBody.FarseerBody.OnSeparation += PhysicsBody_OnSeparation;
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PhysicsBody.FarseerBody.SetIsSensor(true);
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PhysicsBody.FarseerBody.BodyType = BodyType.Static;
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PhysicsBody.FarseerBody.BodyType = BodyType.Kinematic;
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ColliderRadius = ConvertUnits.ToDisplayUnits(Math.Max(Math.Max(PhysicsBody.radius, PhysicsBody.width / 2.0f), PhysicsBody.height / 2.0f));
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PhysicsBody.SetTransform(ConvertUnits.ToSimUnits(position), rotation);
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}
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cameraShake = element.GetAttributeFloat("camerashake", 0.0f);
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InfectIdentifier = element.GetAttributeString("infectidentifier", null);
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InfectionChance = element.GetAttributeFloat("infectionchance", 0.05f);
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triggerOnce = element.GetAttributeBool("triggeronce", false);
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stayTriggeredDelay = element.GetAttributeFloat("staytriggereddelay", 0.0f);
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randomTriggerInterval = element.GetAttributeFloat("randomtriggerinterval", 0.0f);
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randomTriggerProbability = element.GetAttributeFloat("randomtriggerprobability", 0.0f);
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UseNetworkSyncing = element.GetAttributeBool("networksyncing", false);
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unrotatedForce =
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element.Attribute("force") != null && element.Attribute("force").Value.Contains(',') ?
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element.GetAttributeVector2("force", Vector2.Zero) :
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new Vector2(element.GetAttributeFloat("force", 0.0f), 0.0f);
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ForceFluctuationInterval = element.GetAttributeFloat("forcefluctuationinterval", 0.01f);
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ForceFluctuationStrength = Math.Max(element.GetAttributeFloat("forcefluctuationstrength", 0.0f), 0.0f);
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ForceFalloff = element.GetAttributeBool("forcefalloff", true);
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ForceVelocityLimit = ConvertUnits.ToSimUnits(element.GetAttributeFloat("forcevelocitylimit", float.MaxValue));
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string forceModeStr = element.GetAttributeString("forcemode", "Force");
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if (!Enum.TryParse(forceModeStr, out forceMode))
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{
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DebugConsole.ThrowError("Error in LevelTrigger config: \"" + forceModeStr + "\" is not a valid force mode.");
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}
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CalculateDirectionalForce();
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string triggeredByStr = element.GetAttributeString("triggeredby", "Character");
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if (!Enum.TryParse(triggeredByStr, out triggeredBy))
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{
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DebugConsole.ThrowError("Error in LevelTrigger config: \"" + triggeredByStr + "\" is not a valid triggerer type.");
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}
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UpdateCollisionCategories();
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TriggerOthersDistance = element.GetAttributeFloat("triggerothersdistance", 0.0f);
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var tagsArray = element.GetAttributeStringArray("tags", new string[0]);
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foreach (string tag in tagsArray)
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{
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tags.Add(tag.ToLower());
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}
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if (triggeredBy.HasFlag(TriggererType.OtherTrigger))
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{
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var otherTagsArray = element.GetAttributeStringArray("allowedothertriggertags", new string[0]);
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foreach (string tag in otherTagsArray)
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{
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allowedOtherTriggerTags.Add(tag.ToLower());
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}
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}
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foreach (XElement subElement in element.Elements())
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{
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switch (subElement.Name.ToString().ToLowerInvariant())
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{
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case "statuseffect":
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statusEffects.Add(StatusEffect.Load(subElement, string.IsNullOrEmpty(parentDebugName) ? "LevelTrigger" : "LevelTrigger in "+ parentDebugName));
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break;
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case "attack":
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case "damage":
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var attack = new Attack(subElement, string.IsNullOrEmpty(parentDebugName) ? "LevelTrigger" : "LevelTrigger in " + parentDebugName);
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if (!triggerOnce)
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{
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var multipliedAfflictions = attack.GetMultipliedAfflictions((float)Timing.Step);
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attack.Afflictions.Clear();
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foreach (Affliction affliction in multipliedAfflictions)
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{
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attack.Afflictions.Add(affliction, null);
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}
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}
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attacks.Add(attack);
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break;
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}
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}
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forceFluctuationTimer = Rand.Range(0.0f, ForceFluctuationInterval);
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randomTriggerTimer = Rand.Range(0.0f, randomTriggerInterval);
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}
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private void UpdateCollisionCategories()
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{
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if (PhysicsBody == null) return;
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var collidesWith = Physics.CollisionNone;
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if (triggeredBy.HasFlag(TriggererType.Human) || triggeredBy.HasFlag(TriggererType.Creature)) { collidesWith |= Physics.CollisionCharacter; }
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if (triggeredBy.HasFlag(TriggererType.Item)) { collidesWith |= Physics.CollisionItem | Physics.CollisionProjectile; }
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if (triggeredBy.HasFlag(TriggererType.Submarine)) { collidesWith |= Physics.CollisionWall; }
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PhysicsBody.CollidesWith = collidesWith;
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}
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private void CalculateDirectionalForce()
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{
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var ca = (float)Math.Cos(-Rotation);
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var sa = (float)Math.Sin(-Rotation);
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Force = new Vector2(
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ca * unrotatedForce.X + sa * unrotatedForce.Y,
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-sa * unrotatedForce.X + ca * unrotatedForce.Y);
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}
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private bool PhysicsBody_OnCollision(Fixture fixtureA, Fixture fixtureB, FarseerPhysics.Dynamics.Contacts.Contact contact)
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{
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Entity entity = GetEntity(fixtureB);
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if (entity == null) return false;
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if (entity is Character character)
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{
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if (character.CurrentHull != null) return false;
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if (character.IsHuman)
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{
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if (!triggeredBy.HasFlag(TriggererType.Human)) return false;
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}
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else
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{
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if (!triggeredBy.HasFlag(TriggererType.Creature)) return false;
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}
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}
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else if (entity is Item item)
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{
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if (item.CurrentHull != null) return false;
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if (!triggeredBy.HasFlag(TriggererType.Item)) return false;
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}
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else if (entity is Submarine)
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{
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if (!triggeredBy.HasFlag(TriggererType.Submarine)) return false;
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}
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if (!triggerers.Contains(entity))
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{
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if (!IsTriggered)
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{
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OnTriggered?.Invoke(this, entity);
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}
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TriggererPosition[entity] = entity.WorldPosition;
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triggerers.Add(entity);
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}
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return true;
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}
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private void PhysicsBody_OnSeparation(Fixture fixtureA, Fixture fixtureB, Contact contact)
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{
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Entity entity = GetEntity(fixtureB);
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if (entity == null) { return; }
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if (entity is Character character &&
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(!character.Enabled || character.Removed) &&
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triggerers.Contains(entity))
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{
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TriggererPosition.Remove(entity);
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triggerers.Remove(entity);
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return;
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}
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//check if there are contacts with any other fixture of the trigger
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//(the OnSeparation callback happens when two fixtures separate,
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//e.g. if a body stops touching the circular fixture at the end of a capsule-shaped body)
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foreach (Fixture fixture in PhysicsBody.FarseerBody.FixtureList)
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{
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ContactEdge contactEdge = fixture.Body.ContactList;
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while (contactEdge != null)
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{
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if (contactEdge.Contact != null &&
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contactEdge.Contact.Enabled &&
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contactEdge.Contact.IsTouching)
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{
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if (contactEdge.Contact.FixtureA != fixture && contactEdge.Contact.FixtureB != fixture)
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{
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var otherEntity = GetEntity(contactEdge.Contact.FixtureB == fixtureB ?
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contactEdge.Contact.FixtureB :
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contactEdge.Contact.FixtureA);
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if (otherEntity == entity) { return; }
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}
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}
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contactEdge = contactEdge.Next;
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}
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}
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if (triggerers.Contains(entity))
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{
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TriggererPosition.Remove(entity);
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triggerers.Remove(entity);
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}
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}
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private Entity GetEntity(Fixture fixture)
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{
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if (fixture.Body == null || fixture.Body.UserData == null) { return null; }
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if (fixture.Body.UserData is Entity entity) { return entity; }
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if (fixture.Body.UserData is Limb limb) { return limb.character; }
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if (fixture.Body.UserData is SubmarineBody subBody) { return subBody.Submarine; }
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return null;
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}
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/// <summary>
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/// Another trigger was triggered, check if this one should react to it
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/// </summary>
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public void OtherTriggered(LevelObject levelObject, LevelTrigger otherTrigger)
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{
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if (!triggeredBy.HasFlag(TriggererType.OtherTrigger) || stayTriggeredDelay <= 0.0f) { return; }
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//check if the other trigger has appropriate tags
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if (allowedOtherTriggerTags.Count > 0)
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{
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if (!allowedOtherTriggerTags.Any(t => otherTrigger.tags.Contains(t))) { return; }
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}
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if (Vector2.DistanceSquared(WorldPosition, otherTrigger.WorldPosition) <= otherTrigger.TriggerOthersDistance * otherTrigger.TriggerOthersDistance)
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{
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bool wasAlreadyTriggered = IsTriggered;
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triggeredTimer = stayTriggeredDelay;
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if (!wasAlreadyTriggered)
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{
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OnTriggered?.Invoke(this, null);
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}
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}
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}
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public void Update(float deltaTime)
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{
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if (ParentTrigger != null && !ParentTrigger.IsTriggered) { return; }
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triggerers.RemoveWhere(t => t.Removed);
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if (PhysicsBody != null)
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{
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//failsafe to ensure triggerers get removed when they're far from the trigger
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float maxExtent = Math.Max(ConvertUnits.ToDisplayUnits(PhysicsBody.GetMaxExtent() * 5), 5000.0f);
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triggerers.RemoveWhere(t =>
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{
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return Vector2.Distance(t.WorldPosition, WorldPosition) > maxExtent;
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});
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}
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bool isNotClient = true;
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#if CLIENT
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isNotClient = GameMain.Client == null;
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#endif
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if (!UseNetworkSyncing || isNotClient)
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{
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if (ForceFluctuationStrength > 0.0f)
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{
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//no need for force fluctuation (or network updates) if the trigger limits velocity and there are no triggerers
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if (forceMode != TriggerForceMode.LimitVelocity || triggerers.Any())
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{
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forceFluctuationTimer += deltaTime;
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if (forceFluctuationTimer > ForceFluctuationInterval)
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{
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NeedsNetworkSyncing = true;
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currentForceFluctuation = Rand.Range(1.0f - ForceFluctuationStrength, 1.0f);
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forceFluctuationTimer = 0.0f;
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}
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}
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}
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if (randomTriggerProbability > 0.0f)
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{
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randomTriggerTimer += deltaTime;
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if (randomTriggerTimer > randomTriggerInterval)
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{
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if (Rand.Range(0.0f, 1.0f) < randomTriggerProbability)
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{
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NeedsNetworkSyncing = true;
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triggeredTimer = stayTriggeredDelay;
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}
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randomTriggerTimer = 0.0f;
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}
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}
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}
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if (stayTriggeredDelay > 0.0f)
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{
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if (triggerers.Count == 0)
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{
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triggeredTimer -= deltaTime;
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}
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else
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{
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triggeredTimer = stayTriggeredDelay;
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}
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}
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if (triggerOnce)
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{
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if (triggeredOnce) { return; }
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if (triggerers.Count > 0) { triggeredOnce = true; }
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}
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foreach (Entity triggerer in triggerers)
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{
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foreach (StatusEffect effect in statusEffects)
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{
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Vector2? position = null;
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if (effect.HasTargetType(StatusEffect.TargetType.This)) { position = WorldPosition; }
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if (triggerer is Character character)
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{
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effect.Apply(effect.type, deltaTime, triggerer, character, position);
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if (effect.HasTargetType(StatusEffect.TargetType.Contained) && character.Inventory != null)
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{
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foreach (Item item in character.Inventory.AllItemsMod)
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{
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if (item.ContainedItems == null) { continue; }
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foreach (Item containedItem in item.ContainedItems)
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{
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effect.Apply(effect.type, deltaTime, triggerer, containedItem.AllPropertyObjects, position);
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}
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}
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}
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}
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else if (triggerer is Item item)
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{
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effect.Apply(effect.type, deltaTime, triggerer, item.AllPropertyObjects, position);
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}
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if (effect.HasTargetType(StatusEffect.TargetType.NearbyItems) ||
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effect.HasTargetType(StatusEffect.TargetType.NearbyCharacters))
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{
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var targets = new List<ISerializableEntity>();
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effect.GetNearbyTargets(worldPosition, targets);
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effect.Apply(effect.type, deltaTime, triggerer, targets);
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}
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}
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if (triggerer is IDamageable damageable)
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{
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foreach (Attack attack in attacks)
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{
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attack.DoDamage(null, damageable, WorldPosition, deltaTime, false);
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}
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}
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else if (triggerer is Submarine submarine)
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{
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foreach (Attack attack in attacks)
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|
{
|
|
float structureDamage = attack.GetStructureDamage(deltaTime);
|
|
if (structureDamage > 0.0f)
|
|
{
|
|
Explosion.RangedStructureDamage(worldPosition, attack.DamageRange, structureDamage, levelWallDamage: 0.0f);
|
|
}
|
|
}
|
|
|
|
if (!string.IsNullOrWhiteSpace(InfectIdentifier))
|
|
{
|
|
submarine.AttemptBallastFloraInfection(InfectIdentifier, deltaTime, InfectionChance);
|
|
}
|
|
}
|
|
|
|
if (Force.LengthSquared() > 0.01f)
|
|
{
|
|
if (triggerer is Character character)
|
|
{
|
|
ApplyForce(character.AnimController.Collider, deltaTime);
|
|
foreach (Limb limb in character.AnimController.Limbs)
|
|
{
|
|
if (limb.IsSevered) { continue; }
|
|
ApplyForce(limb.body, deltaTime);
|
|
}
|
|
}
|
|
else if (triggerer is Submarine submarine)
|
|
{
|
|
ApplyForce(submarine.SubBody.Body, deltaTime);
|
|
}
|
|
}
|
|
|
|
if (triggerer == Character.Controlled || triggerer == Character.Controlled?.Submarine)
|
|
{
|
|
GameMain.GameScreen.Cam.Shake = Math.Max(GameMain.GameScreen.Cam.Shake, cameraShake);
|
|
}
|
|
}
|
|
}
|
|
|
|
private void ApplyForce(PhysicsBody body, float deltaTime)
|
|
{
|
|
float distFactor = 1.0f;
|
|
if (ForceFalloff)
|
|
{
|
|
distFactor = 1.0f - ConvertUnits.ToDisplayUnits(Vector2.Distance(body.SimPosition, PhysicsBody.SimPosition)) / ColliderRadius;
|
|
if (distFactor < 0.0f) return;
|
|
}
|
|
|
|
switch (ForceMode)
|
|
{
|
|
case TriggerForceMode.Force:
|
|
if (ForceVelocityLimit < 1000.0f)
|
|
body.ApplyForce(Force * currentForceFluctuation * distFactor, ForceVelocityLimit);
|
|
else
|
|
body.ApplyForce(Force * currentForceFluctuation * distFactor, maxVelocity: NetConfig.MaxPhysicsBodyVelocity);
|
|
break;
|
|
case TriggerForceMode.Acceleration:
|
|
if (ForceVelocityLimit < 1000.0f)
|
|
body.ApplyForce(Force * body.Mass * currentForceFluctuation * distFactor, ForceVelocityLimit);
|
|
else
|
|
body.ApplyForce(Force * body.Mass * currentForceFluctuation * distFactor, maxVelocity: NetConfig.MaxPhysicsBodyVelocity);
|
|
break;
|
|
case TriggerForceMode.Impulse:
|
|
if (ForceVelocityLimit < 1000.0f)
|
|
body.ApplyLinearImpulse(Force * currentForceFluctuation * distFactor, maxVelocity: ForceVelocityLimit);
|
|
else
|
|
body.ApplyLinearImpulse(Force * currentForceFluctuation * distFactor, maxVelocity: NetConfig.MaxPhysicsBodyVelocity);
|
|
break;
|
|
case TriggerForceMode.LimitVelocity:
|
|
float maxVel = ForceVelocityLimit * currentForceFluctuation * distFactor;
|
|
if (body.LinearVelocity.LengthSquared() > maxVel * maxVel)
|
|
{
|
|
body.ApplyForce(
|
|
Vector2.Normalize(-body.LinearVelocity) *
|
|
Force.Length() * body.Mass * currentForceFluctuation * distFactor,
|
|
maxVelocity: NetConfig.MaxPhysicsBodyVelocity);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
public Vector2 GetWaterFlowVelocity(Vector2 viewPosition)
|
|
{
|
|
Vector2 baseVel = GetWaterFlowVelocity();
|
|
if (baseVel.LengthSquared() < 0.1f) return Vector2.Zero;
|
|
|
|
float triggerSize = ConvertUnits.ToDisplayUnits(Math.Max(Math.Max(PhysicsBody.radius, PhysicsBody.width / 2.0f), PhysicsBody.height / 2.0f));
|
|
float dist = Vector2.Distance(viewPosition, WorldPosition);
|
|
if (dist > triggerSize) return Vector2.Zero;
|
|
|
|
return baseVel * (1.0f - dist / triggerSize);
|
|
}
|
|
|
|
public Vector2 GetWaterFlowVelocity()
|
|
{
|
|
if (Force == Vector2.Zero || ForceMode == TriggerForceMode.LimitVelocity) { return Vector2.Zero; }
|
|
|
|
Vector2 vel = Force;
|
|
if (ForceMode == TriggerForceMode.Acceleration)
|
|
{
|
|
vel *= 1000.0f;
|
|
}
|
|
else if (ForceMode == TriggerForceMode.Impulse)
|
|
{
|
|
vel /= (float)Timing.Step;
|
|
}
|
|
return vel.ClampLength(ConvertUnits.ToDisplayUnits(ForceVelocityLimit)) * currentForceFluctuation;
|
|
}
|
|
|
|
public void ServerWrite(IWriteMessage msg, Client c)
|
|
{
|
|
if (ForceFluctuationStrength > 0.0f)
|
|
{
|
|
msg.WriteRangedSingle(MathHelper.Clamp(currentForceFluctuation, 0.0f, 1.0f), 0.0f, 1.0f, 8);
|
|
}
|
|
if (stayTriggeredDelay > 0.0f)
|
|
{
|
|
msg.WriteRangedSingle(MathHelper.Clamp(triggeredTimer, 0.0f, stayTriggeredDelay), 0.0f, stayTriggeredDelay, 16);
|
|
}
|
|
}
|
|
}
|
|
}
|