545 lines
22 KiB
C#
545 lines
22 KiB
C#
using Barotrauma.LuaCs.Events;
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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.Concurrent;
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using System.Collections.Generic;
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using System.Collections.Immutable;
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using System.Linq;
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namespace Barotrauma.Items.Components
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{
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class MeleeWeapon : Holdable
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{
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private float hitPos;
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private bool hitting;
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private float range;
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private float reload;
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private float reloadTimer;
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public Attack Attack { get; private set; }
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private readonly HashSet<Entity> hitTargets = new HashSet<Entity>();
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private readonly ConcurrentQueue<Fixture> impactQueue = new ConcurrentQueue<Fixture>();
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public Character User { get; private set; }
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[Serialize(0.0f, IsPropertySaveable.No, description: "An estimation of how close the item has to be to the target for it to hit. Used by AI characters to determine when they're close enough to hit a target.")]
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public float Range
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{
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get { return ConvertUnits.ToDisplayUnits(range); }
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set { range = ConvertUnits.ToSimUnits(value); }
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}
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[Serialize(0.5f, IsPropertySaveable.No, description: "How long the user has to wait before they can hit with the weapon again (in seconds).")]
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public float Reload
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{
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get { return reload; }
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set { reload = Math.Max(0.0f, value); }
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}
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[Serialize(false, IsPropertySaveable.No, description: "Can the weapon hit multiple targets per swing.")]
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public bool AllowHitMultiple
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{
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get;
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set;
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}
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[Serialize(false, IsPropertySaveable.No, description: "Disable to make the weapon ignore all hit effects when it collides with walls, doors, or other items.")]
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public bool HitOnlyCharacters
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{
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get;
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set;
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}
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[Editable, Serialize(true, IsPropertySaveable.No)]
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public bool Swing { get; set; }
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[Editable, Serialize("2.0, 0.0", IsPropertySaveable.No)]
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public Vector2 SwingPos { get; set; }
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[Editable, Serialize("3.0, -1.0", IsPropertySaveable.No)]
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public Vector2 SwingForce { get; set; }
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public bool Hitting { get { return hitting; } }
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/// <summary>
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/// Defines items that boost the weapon functionality, like battery cell for stun batons.
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/// </summary>
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public readonly ImmutableHashSet<Identifier> PreferredContainedItems;
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public MeleeWeapon(Item item, ContentXElement element)
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: base(item, element)
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{
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foreach (var subElement in element.Elements())
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{
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if (!subElement.Name.ToString().Equals("attack", StringComparison.OrdinalIgnoreCase)) { continue; }
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Attack = new Attack(subElement, item.Name + ", MeleeWeapon", item)
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{
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DamageRange = item.body == null ? 10.0f : ConvertUnits.ToDisplayUnits(item.body.GetMaxExtent())
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};
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}
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item.IsShootable = true;
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item.RequireAimToUse = element.Parent.GetAttributeBool("requireaimtouse", true);
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PreferredContainedItems = element.GetAttributeIdentifierArray("preferredcontaineditems", Array.Empty<Identifier>()).ToImmutableHashSet();
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}
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public override void Equip(Character character)
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{
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base.Equip(character);
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//force a wait of at least 1 second when equipping the weapon, so you can't "rapid-fire" by swapping between weapons
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const float forcedDelayOnEquip = 1.0f;
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reloadTimer = Math.Max(Math.Min(reload, forcedDelayOnEquip), reloadTimer);
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IsActive = true;
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}
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public override bool Use(float deltaTime, Character character = null)
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{
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if (character == null || reloadTimer > 0.0f) { return false; }
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#if CLIENT
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if (!Item.RequireAimToUse && character.IsPlayer && (GUI.MouseOn != null || character.Inventory.visualSlots.Any(s => s.MouseOn()) || Inventory.DraggingItems.Any())) { return false; }
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#endif
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if (Item.RequireAimToUse && !character.IsKeyDown(InputType.Aim) || hitting) { return false; }
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//don't allow hitting if the character is already hitting with another weapon
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foreach (Item heldItem in character.HeldItems)
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{
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var otherWeapon = heldItem.GetComponent<MeleeWeapon>();
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if (otherWeapon == null) { continue; }
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if (otherWeapon.hitting) { return false; }
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}
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SetUser(character);
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if (Item.RequireAimToUse && hitPos < MathHelper.PiOver4) { return false; }
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ActivateNearbySleepingCharacters();
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reloadTimer = reload;
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reloadTimer /= 1f + character.GetStatValue(StatTypes.MeleeAttackSpeed);
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reloadTimer /= 1f + item.GetQualityModifier(Quality.StatType.StrikingSpeedMultiplier);
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character.AnimController.LockFlipping();
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item.body.FarseerBody.CollisionCategories = Physics.CollisionProjectile;
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item.body.FarseerBody.CollidesWith = Physics.CollisionCharacter | Physics.CollisionWall | Physics.CollisionItemBlocking;
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item.body.FarseerBody.OnCollision += OnCollision;
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item.body.FarseerBody.IsBullet = true;
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item.body.PhysEnabled = true;
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if (Swing && !character.AnimController.InWater)
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{
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foreach (Limb l in character.AnimController.Limbs)
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{
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if (l.IsSevered) { continue; }
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Vector2 force = new Vector2(character.AnimController.Dir * SwingForce.X, SwingForce.Y) * l.Mass;
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switch (l.type)
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{
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case LimbType.Torso:
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force *= 2;
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break;
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case LimbType.Legs:
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case LimbType.LeftFoot:
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case LimbType.LeftThigh:
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case LimbType.LeftLeg:
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case LimbType.RightFoot:
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case LimbType.RightThigh:
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case LimbType.RightLeg:
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force = Vector2.Zero;
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break;
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}
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l.body.ApplyLinearImpulse(force);
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}
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}
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hitting = true;
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hitTargets.Clear();
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IsActive = true;
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if (item.AiTarget != null)
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{
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item.AiTarget.SoundRange = item.AiTarget.MaxSoundRange;
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item.AiTarget.SightRange = item.AiTarget.MaxSightRange;
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}
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return false;
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}
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public override bool SecondaryUse(float deltaTime, Character character = null)
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{
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return characterUsable || character == null;
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}
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public override void Drop(Character dropper, bool setTransform = true)
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{
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//end hit first (which sets the weapon to the "held" state, with disabled physics and no special collision detection)
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EndHit();
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//ensure the physics body is enabled
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item.body.PhysEnabled = true;
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base.Drop(dropper, setTransform);
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}
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public override void UpdateBroken(float deltaTime, Camera cam)
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{
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Update(deltaTime, cam);
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}
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public override void Update(float deltaTime, Camera cam)
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{
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if (!item.body.Enabled)
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{
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while (impactQueue.TryDequeue(out _)) { } // Clear queue
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return;
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}
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if (picker == null || !picker.HeldItems.Contains(item))
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{
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while (impactQueue.TryDequeue(out _)) { } // Clear queue
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IsActive = false;
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}
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while (impactQueue.TryDequeue(out var impact))
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{
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HandleImpact(impact);
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}
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//in case handling the impact does something to the picker
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if (picker == null) { return; }
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reloadTimer -= deltaTime;
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if (reloadTimer < 0)
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{
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reloadTimer = 0;
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}
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if (!picker.IsKeyDown(InputType.Aim) && !hitting)
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{
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hitPos = 0.0f;
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}
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ApplyStatusEffects(ActionType.OnActive, deltaTime, picker);
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if (item.body.Dir != picker.AnimController.Dir)
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{
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item.FlipX(relativeToSub: false);
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}
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AnimController ac = picker.AnimController;
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if (!hitting)
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{
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bool aim = item.RequireAimToUse && picker.AllowInput && picker.IsKeyDown(InputType.Aim) && reloadTimer <= 0 && picker.CanAim && !UsageDisabledByRangedWeapon(picker);
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if (aim)
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{
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UpdateSwingPos(deltaTime, out Vector2 swingPos);
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hitPos = MathUtils.WrapAnglePi(Math.Min(hitPos + deltaTime * 3f, MathHelper.PiOver4));
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ac.HoldItem(deltaTime, item, handlePos, itemPos: aimPos + swingPos, aim: false, hitPos, holdAngle + hitPos + aimAngle, aimMelee: true);
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if (ac.InWater)
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{
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ac.LockFlipping();
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}
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}
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else
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{
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hitPos = 0;
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ac.HoldItem(deltaTime, item, handlePos, itemPos: holdPos, aim: false, holdAngle);
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}
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}
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else
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{
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// TODO: We might want to make this configurable
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hitPos -= deltaTime * 15f;
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if (Swing)
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{
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ac.HoldItem(deltaTime, item, handlePos, itemPos: SwingPos, aim: false, hitPos, holdAngle);
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}
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else
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{
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ac.HoldItem(deltaTime, item, handlePos, itemPos: holdPos, aim: false, holdAngle);
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}
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if (hitPos < -MathHelper.Pi)
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{
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EndHit();
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}
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}
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}
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/// <summary>
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/// Activate sleeping ragdolls that are close enough to hit with the weapon (otherwise the collision will not be registered)
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/// </summary>
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private void ActivateNearbySleepingCharacters()
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{
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foreach (Character c in Character.CharacterList)
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{
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if (!c.Enabled || !c.AnimController.BodyInRest) { continue; }
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//do a broad check first
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if (Math.Abs(c.WorldPosition.X - item.WorldPosition.X) > 1000.0f) { continue; }
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if (Math.Abs(c.WorldPosition.Y - item.WorldPosition.Y) > 1000.0f) { continue; }
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foreach (Limb limb in c.AnimController.Limbs)
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{
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float hitRange = 2.0f;
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if (Vector2.DistanceSquared(limb.SimPosition, item.SimPosition) < hitRange * hitRange)
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{
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c.AnimController.BodyInRest = false;
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break;
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}
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}
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}
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}
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private void SetUser(Character character)
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{
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if (User == character) { return; }
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if (User != null && User.Removed) { User = null; }
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User = character;
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}
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private void EndHit()
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{
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RestoreCollision();
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hitting = false;
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hitTargets.Clear();
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hitPos = 0;
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}
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private void RestoreCollision()
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{
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while (impactQueue.TryDequeue(out _)) { } // Clear queue
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item.body.FarseerBody.OnCollision -= OnCollision;
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item.body.CollisionCategories = Physics.CollisionItem;
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item.body.CollidesWith = Physics.DefaultItemCollidesWith;
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item.body.FarseerBody.IsBullet = false;
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item.body.PhysEnabled = false;
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}
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private bool OnCollision(Fixture f1, Fixture f2, Contact contact)
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{
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if (User == null || User.Removed)
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{
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impactQueue.Enqueue(f2);
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return true;
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}
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contact.GetWorldManifold(out Vector2 normal, out var points);
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//ignore collision if there's a wall between the user and the contact point to prevent hitting through walls
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if (Submarine.PickBody(User.AnimController.AimSourceSimPos,
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points[0],
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collisionCategory: Physics.CollisionWall | Physics.CollisionLevel | Physics.CollisionItemBlocking,
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allowInsideFixture: true,
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customPredicate: (Fixture fixture) => { return fixture.CollidesWith.HasFlag(Physics.CollisionItem) && fixture.Body != f2.Body; }) != null)
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{
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return false;
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}
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if (f2.Body.UserData is Limb targetLimb)
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{
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if (targetLimb.IsSevered || targetLimb.character == null || targetLimb.character == User) { return false; }
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if (targetLimb.character.IgnoreMeleeWeapons) { return false; }
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var targetCharacter = targetLimb.character;
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if (targetCharacter == picker) { return false; }
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if (HitFriendlyTarget(targetCharacter)) { return false; }
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if (AllowHitMultiple)
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{
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if (hitTargets.Contains(targetCharacter)) { return false; }
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}
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else
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{
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if (hitTargets.Any(t => t is Character)) { return false; }
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}
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hitTargets.Add(targetCharacter);
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}
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else if (f2.Body.UserData is Character targetCharacter)
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{
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//only allow hitting limbs, not the main collider
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//otherwise it's difficult to make certain parts of the ragdoll not take hits by making them ignore collisions or melee weapons
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return false;
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}
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else if (!HitOnlyCharacters)
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{
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if ((f2.Body.UserData as Structure ?? f2.UserData as Structure) is Structure targetStructure)
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{
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if (AllowHitMultiple)
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{
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if (hitTargets.Contains(targetStructure)) { return true; }
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}
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else
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{
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if (hitTargets.Any(t => t is Structure)) { return true; }
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}
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hitTargets.Add(targetStructure);
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}
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else if ((f2.Body.UserData as Item ?? f2.UserData as Item) is Item targetItem)
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{
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if (AllowHitMultiple)
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{
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if (hitTargets.Contains(targetItem)) { return true; }
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}
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else
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{
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if (hitTargets.Any(t => t is Item)) { return true; }
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}
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hitTargets.Add(targetItem);
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}
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else if (f2.Body.UserData is Holdable holdable && holdable.CanPush)
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{
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if (holdable.Item.GetRootInventoryOwner() == User) { return false; }
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hitTargets.Add(holdable.Item);
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}
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}
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else
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{
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return false;
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}
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impactQueue.Enqueue(f2);
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return true;
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// Prevent bots from hitting friendly targets.
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bool HitFriendlyTarget(Character target)
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{
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if (User.IsPlayer) { return false; }
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if (User.AIController is HumanAIController { Enabled: true } humanAI)
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{
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if (humanAI.ObjectiveManager.CurrentObjective is AIObjectiveCombat combat && combat.Enemy != target)
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{
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if (humanAI.IsFriendly(target, onlySameTeam: true)) { return true; }
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}
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}
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return false;
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}
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}
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private System.Text.StringBuilder serverLogger;
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private void HandleImpact(Fixture targetFixture)
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{
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var target = targetFixture.Body;
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if (User == null || User.Removed || target == null)
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{
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RestoreCollision();
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hitting = false;
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User = null;
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return;
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}
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float damageMultiplier = 1 + User.GetStatValue(StatTypes.MeleeAttackMultiplier);
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damageMultiplier *= 1.0f + item.GetQualityModifier(Quality.StatType.StrikingPowerMultiplier);
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Character user = User;
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Limb targetLimb = target.UserData as Limb;
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Character targetCharacter = targetLimb?.character ?? target.UserData as Character;
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Structure targetStructure = target.UserData as Structure ?? targetFixture.UserData as Structure;
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Item targetItem = target.UserData is Holdable h ? h.Item : target.UserData as Item ?? targetFixture.UserData as Item;
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Entity targetEntity = targetCharacter ?? targetStructure ?? targetItem ?? target.UserData as Entity;
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LuaCsSetup.Instance.EventService.PublishEvent<IEventMeleeWeaponHandleImpact>(x => x.OnMeleeWeaponHandleImpact(this, target));
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if (Attack != null)
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{
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Attack.SetUser(user);
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bool applyAttack = true;
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if (Attack.Conditionals.Any(c => !c.TargetSelf && !c.Matches(targetEntity as ISerializableEntity)) ||
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Attack.Conditionals.Any(c => c.TargetSelf && !c.Matches(user)))
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{
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applyAttack = false;
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}
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if (applyAttack)
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{
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Attack.DamageMultiplier = damageMultiplier;
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if (targetLimb != null)
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{
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if (targetLimb.character.Removed) { return; }
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targetLimb.character.LastDamageSource = item;
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Attack.DoDamageToLimb(user, targetLimb, item.WorldPosition, 1.0f);
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}
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else if (targetCharacter != null)
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{
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if (targetCharacter.Removed) { return; }
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targetCharacter.LastDamageSource = item;
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Attack.DoDamage(user, targetCharacter, item.WorldPosition, 1.0f);
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}
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else if (targetStructure != null)
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{
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if (targetStructure.Removed) { return; }
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Attack.DoDamage(user, targetStructure, item.WorldPosition, 1.0f);
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}
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else if (targetItem != null && targetItem.Prefab.DamagedByMeleeWeapons && targetItem.Condition > 0)
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{
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if (targetItem.Removed) { return; }
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var attackResult = Attack.DoDamage(user, targetItem, item.WorldPosition, 1.0f);
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#if CLIENT
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if (attackResult.Damage > 0.0f && targetItem.Prefab.ShowHealthBar && Character.Controlled != null &&
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(user == Character.Controlled || Character.Controlled.CanSeeTarget(item)))
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{
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Character.Controlled.UpdateHUDProgressBar(targetItem,
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targetItem.WorldPosition,
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targetItem.Condition / targetItem.MaxCondition,
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emptyColor: GUIStyle.HealthBarColorLow,
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fullColor: GUIStyle.HealthBarColorHigh,
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textTag: targetItem.Prefab.ShowNameInHealthBar ? targetItem.Name : string.Empty);
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}
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#endif
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}
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else if (target.UserData is Holdable { CanPush: true } holdable)
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{
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if (holdable.Item.Removed) { return; }
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RestoreCollision();
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hitting = false;
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User = null;
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}
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else
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{
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return;
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}
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}
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}
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if (GameMain.NetworkMember != null && GameMain.NetworkMember.IsClient) { return; }
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ActionType conditionalActionType = ActionType.OnSuccess;
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if (user != null && Rand.Range(0.0f, 0.5f) > DegreeOfSuccess(user))
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{
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conditionalActionType = ActionType.OnFailure;
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}
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if (GameMain.NetworkMember is { IsServer: true } server && targetEntity != null)
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{
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server.CreateEntityEvent(item, new Item.ApplyStatusEffectEventData(conditionalActionType, targetItemComponent: this, targetCharacter, targetLimb, useTarget: targetEntity));
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server.CreateEntityEvent(item, new Item.ApplyStatusEffectEventData(ActionType.OnUse, targetItemComponent: this, targetCharacter, targetLimb, useTarget: targetEntity));
|
|
serverLogger ??= new System.Text.StringBuilder();
|
|
serverLogger.Clear();
|
|
serverLogger.Append($"{picker?.LogName} used {item.Name}");
|
|
if (item.ContainedItems != null && item.ContainedItems.Any())
|
|
{
|
|
serverLogger.Append($"({string.Join(", ", item.ContainedItems.Select(i => i?.Name))})");
|
|
}
|
|
string targetName;
|
|
if (targetCharacter != null)
|
|
{
|
|
targetName = targetCharacter.LogName;
|
|
}
|
|
else if (targetItem != null)
|
|
{
|
|
targetName = targetItem.Name;
|
|
}
|
|
else if (targetStructure != null)
|
|
{
|
|
targetName = targetStructure.Name;
|
|
}
|
|
else
|
|
{
|
|
targetName = targetEntity.ToString();
|
|
}
|
|
serverLogger.Append($" on {targetName}.");
|
|
#if SERVER
|
|
Networking.GameServer.Log(serverLogger.ToString(), Networking.ServerLog.MessageType.Attack);
|
|
#endif
|
|
}
|
|
if (targetEntity != null)
|
|
{
|
|
ApplyStatusEffects(conditionalActionType, 1.0f, targetCharacter, targetLimb, useTarget: targetEntity, user: user, attackMultiplier: damageMultiplier);
|
|
ApplyStatusEffects(ActionType.OnUse, 1.0f, targetCharacter, targetLimb, useTarget: targetEntity, user: user, attackMultiplier: damageMultiplier);
|
|
}
|
|
|
|
if (DeleteOnUse)
|
|
{
|
|
Entity.Spawner.AddItemToRemoveQueue(item);
|
|
}
|
|
}
|
|
}
|
|
}
|