Joonas Rikkonen
04bcc6b9b1
- Armor values aren't reduced from the damage taken, but instead multiply the damage (e.g. an item reduces damage by 10% instead of 10 hp). Now armor doesn't make characters invulnerable to small amounts of damage. - Armoring isn't defined as a single "armor value", but instead there are "damage modifiers" which can be added to items and limbs. The modifiers can only affect specific types of damage and have separate multipliers for the damage amount and bleeding amount. - Having a fire proof item on a limb doesn't make that limb invulnerable to burn damage. Item's that protect against fire now have a damage modifier for the Burn damage type.
343 lines
10 KiB
C#
343 lines
10 KiB
C#
using FarseerPhysics;
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using FarseerPhysics.Dynamics;
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using FarseerPhysics.Dynamics.Contacts;
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using FarseerPhysics.Dynamics.Joints;
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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.Items.Components
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{
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class Projectile : ItemComponent
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{
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private float launchImpulse;
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private bool doesStick;
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private PrismaticJoint stickJoint;
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private Body stickTarget;
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private Attack attack;
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public List<Body> IgnoredBodies;
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public Character User;
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[Serialize(10.0f, false)]
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public float LaunchImpulse
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{
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get { return launchImpulse; }
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set { launchImpulse = value; }
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}
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[Serialize(false, false)]
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public bool CharacterUsable
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{
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get { return characterUsable; }
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set { characterUsable = value; }
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}
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[Serialize(false, false)]
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public bool DoesStick
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{
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get { return doesStick; }
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set { doesStick = value; }
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}
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[Serialize(false, false)]
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public bool Hitscan
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{
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get;
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set;
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}
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[Serialize(false, false)]
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public bool RemoveOnHit
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{
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get;
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set;
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}
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public Projectile(Item item, XElement element)
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: base (item, element)
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{
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IgnoredBodies = new List<Body>();
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foreach (XElement subElement in element.Elements())
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{
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if (subElement.Name.ToString().ToLowerInvariant() != "attack") continue;
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attack = new Attack(subElement);
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}
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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 && !characterUsable) return false;
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Vector2 launchDir = new Vector2((float)Math.Cos(item.body.Rotation), (float)Math.Sin(item.body.Rotation));
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if (Hitscan)
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{
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DoHitscan(launchDir);
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}
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else
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{
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Launch(launchDir * launchImpulse * item.body.Mass);
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}
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User = character;
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return true;
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}
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private void Launch(Vector2 impulse)
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{
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item.Drop();
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item.body.Enabled = true;
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item.body.ApplyLinearImpulse(impulse);
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item.body.FarseerBody.OnCollision += OnProjectileCollision;
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item.body.FarseerBody.IsBullet = true;
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item.body.CollisionCategories = Physics.CollisionProjectile;
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item.body.CollidesWith = Physics.CollisionCharacter | Physics.CollisionWall | Physics.CollisionLevel;
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IsActive = true;
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if (stickJoint == null || !doesStick) return;
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if (stickTarget != null)
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{
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try
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{
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item.body.FarseerBody.RestoreCollisionWith(stickTarget);
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}
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catch (Exception e)
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{
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#if DEBUG
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DebugConsole.ThrowError("Failed to restore collision with stickTarget", e);
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#endif
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}
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stickTarget = null;
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}
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GameMain.World.RemoveJoint(stickJoint);
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stickJoint = null;
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}
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private void DoHitscan(Vector2 dir)
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{
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float rotation = item.body.Rotation;
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item.Drop();
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item.body.Enabled = true;
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//set the velocity of the body because the OnProjectileCollision method
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//uses it to determine the direction from which the projectile hit
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item.body.LinearVelocity = dir;
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IsActive = true;
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Vector2 rayStart = item.SimPosition;
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Vector2 rayEnd = item.SimPosition + dir * 1000.0f;
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bool hitSomething = false;
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GameMain.World.RayCast((fixture, point, normal, fraction) =>
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{
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if (fixture == null || fixture.IsSensor) return -1;
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if (!fixture.CollisionCategories.HasFlag(Physics.CollisionCharacter) &&
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!fixture.CollisionCategories.HasFlag(Physics.CollisionWall) &&
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!fixture.CollisionCategories.HasFlag(Physics.CollisionLevel)) return -1;
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item.body.SetTransform(point, rotation);
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if (OnProjectileCollision(fixture, normal))
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{
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hitSomething = true;
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return 0;
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}
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return 1;
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}, rayStart, rayEnd);
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//the raycast didn't hit anything -> the projectile flew somewhere outside the level and is permanently lost
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if (!hitSomething)
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{
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Item.Spawner.AddToRemoveQueue(item);
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}
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}
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public override void Update(float deltaTime, Camera cam)
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{
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ApplyStatusEffects(ActionType.OnActive, deltaTime, null);
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if (stickJoint != null &&
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(stickJoint.JointTranslation < stickJoint.LowerLimit * 0.9f || stickJoint.JointTranslation > stickJoint.UpperLimit * 0.9f))
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{
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if (stickTarget != null)
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{
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try
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{
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item.body.FarseerBody.RestoreCollisionWith(stickTarget);
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}
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catch
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{
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//the body that the projectile was stuck to has been removed
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}
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stickTarget = null;
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}
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try
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{
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GameMain.World.RemoveJoint(stickJoint);
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}
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catch
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{
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//the body that the projectile was stuck to has been removed
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}
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stickJoint = null;
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IsActive = false;
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}
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}
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private bool OnProjectileCollision(Fixture f1, Fixture f2, Contact contact)
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{
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return OnProjectileCollision(f2, contact.Manifold.LocalNormal);
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}
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private bool OnProjectileCollision(Fixture target, Vector2 collisionNormal)
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{
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if (IgnoredBodies.Contains(target.Body)) return false;
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if (target.CollisionCategories == Physics.CollisionCharacter && !(target.Body.UserData is Limb))
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{
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return false;
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}
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AttackResult attackResult = new AttackResult();
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if (attack != null)
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{
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var submarine = target.Body.UserData as Submarine;
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if (submarine != null)
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{
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item.Move(-submarine.Position);
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item.Submarine = submarine;
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item.body.Submarine = submarine;
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//item.FindHull();
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return true;
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}
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Limb limb;
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Structure structure;
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if ((limb = (target.Body.UserData as Limb)) != null)
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{
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attackResult = attack.DoDamage(User, limb.character, item.WorldPosition, 1.0f);
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}
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else if ((structure = (target.Body.UserData as Structure)) != null)
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{
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attackResult = attack.DoDamage(User, structure, item.WorldPosition, 1.0f);
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}
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}
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ApplyStatusEffects(ActionType.OnUse, 1.0f);
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ApplyStatusEffects(ActionType.OnImpact, 1.0f);
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IsActive = false;
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item.body.FarseerBody.OnCollision -= OnProjectileCollision;
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item.body.FarseerBody.IsBullet = false;
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item.body.CollisionCategories = Physics.CollisionItem;
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item.body.CollidesWith = Physics.CollisionWall | Physics.CollisionLevel;
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IgnoredBodies.Clear();
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target.Body.ApplyLinearImpulse(item.body.LinearVelocity * item.body.Mass);
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if (attackResult.AppliedDamageModifiers != null &&
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attackResult.AppliedDamageModifiers.Any(dm => dm.DeflectProjectiles))
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{
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item.body.LinearVelocity *= 0.1f;
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}
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else if (doesStick)
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{
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Vector2 dir = new Vector2(
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(float)Math.Cos(item.body.Rotation),
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(float)Math.Sin(item.body.Rotation));
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if (Vector2.Dot(item.body.LinearVelocity, collisionNormal) < 0.0f)
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{
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StickToTarget(target.Body, dir);
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return Hitscan;
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}
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}
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else
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{
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item.body.LinearVelocity *= 0.5f;
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}
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var containedItems = item.ContainedItems;
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if (containedItems != null)
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{
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foreach (Item contained in containedItems)
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{
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if (contained.body != null)
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{
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contained.SetTransform(item.SimPosition, contained.body.Rotation);
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}
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contained.Condition = 0.0f;
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}
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}
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if (RemoveOnHit)
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{
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Item.Spawner.AddToRemoveQueue(item);
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}
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return true;
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}
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private void StickToTarget(Body targetBody, Vector2 axis)
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{
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if (stickJoint != null) return;
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stickJoint = new PrismaticJoint(targetBody, item.body.FarseerBody, item.body.SimPosition, axis, true);
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stickJoint.MotorEnabled = true;
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stickJoint.MaxMotorForce = 30.0f;
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stickJoint.LimitEnabled = true;
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if (item.Sprite != null)
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{
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stickJoint.LowerLimit = ConvertUnits.ToSimUnits(item.Sprite.size.X * -0.3f);
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stickJoint.UpperLimit = ConvertUnits.ToSimUnits(item.Sprite.size.X * 0.3f);
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}
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item.body.FarseerBody.IgnoreCollisionWith(targetBody);
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stickTarget = targetBody;
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GameMain.World.AddJoint(stickJoint);
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IsActive = true;
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}
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protected override void RemoveComponentSpecific()
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{
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if (stickJoint != null)
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{
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try
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{
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GameMain.World.RemoveJoint(stickJoint);
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}
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catch
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{
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//the body that the projectile was stuck to has been removed
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}
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stickJoint = null;
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}
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}
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}
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}
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