549 lines
18 KiB
C#
549 lines
18 KiB
C#
using System;
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using System.Xml.Linq;
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using FarseerPhysics;
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using FarseerPhysics.Dynamics;
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using FarseerPhysics.Dynamics.Joints;
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using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using Barotrauma.Items.Components;
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namespace Barotrauma
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{
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public enum LimbType
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{
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None, LeftHand, RightHand, LeftArm, RightArm,
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LeftLeg, RightLeg, LeftFoot, RightFoot, Head, Torso, Tail, Legs, RightThigh, LeftThigh, Waist
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};
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class Limb
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{
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private const float LimbDensity = 15;
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private const float LimbAngularDamping = 7;
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public readonly Character character;
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//the physics body of the limb
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public PhysicsBody body;
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private Texture2D bodyShapeTexture;
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private readonly int refJointIndex;
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private readonly float steerForce;
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private readonly bool doesFlip;
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protected readonly Vector2 stepOffset;
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public Sprite sprite, damagedSprite;
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public bool inWater;
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public FixedMouseJoint pullJoint;
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public readonly LimbType type;
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public readonly bool ignoreCollisions;
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//private readonly float maxHealth;
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//private float damage;
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//private float bleeding;
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public readonly float impactTolerance;
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private float damage, burnt;
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private readonly Vector2 armorSector;
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private readonly float armorValue;
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Sound hitSound;
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//a timer for delaying when a hitsound/attacksound can be played again
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public float soundTimer;
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public const float SoundInterval = 0.2f;
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public readonly Attack attack;
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private Direction dir;
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private Wearable wearingItem;
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private WearableSprite wearingItemSprite;
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private Vector2 animTargetPos;
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public Texture2D BodyShapeTexture
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{
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get { return bodyShapeTexture; }
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}
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public bool DoesFlip
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{
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get { return doesFlip; }
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}
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public Vector2 WorldPosition
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{
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get { return character.Submarine == null ? Position : Position + character.Submarine.Position; }
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}
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public Vector2 Position
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{
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get { return ConvertUnits.ToDisplayUnits(body.SimPosition); }
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}
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public Vector2 SimPosition
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{
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get { return body.SimPosition; }
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}
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public float Rotation
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{
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get { return body.Rotation; }
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}
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//where an animcontroller is trying to pull the limb, only used for debug visualization
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public Vector2 AnimTargetPos
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{
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get { return animTargetPos; }
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}
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public float SteerForce
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{
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get { return steerForce; }
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}
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public float Mass
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{
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get { return body.Mass; }
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}
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public bool Disabled { get; set; }
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public Sound HitSound
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{
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get { return hitSound; }
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}
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public Vector2 LinearVelocity
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{
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get { return body.LinearVelocity; }
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}
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public float Dir
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{
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get { return ((dir == Direction.Left) ? -1.0f : 1.0f); }
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set { dir = (value==-1.0f) ? Direction.Left : Direction.Right; }
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}
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public int RefJointIndex
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{
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get { return refJointIndex; }
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}
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public Vector2 StepOffset
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{
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get { return stepOffset; }
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}
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public float Burnt
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{
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get { return burnt; }
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set { burnt = MathHelper.Clamp(value,0.0f,100.0f); }
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}
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//public float Damage
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//{
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// get { return damage; }
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// set
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// {
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// damage = Math.Max(value, 0.0f);
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// if (damage >=maxHealth) Character.Kill();
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// }
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//}
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//public float MaxHealth
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//{
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// get { return maxHealth; }
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//}
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//public float Bleeding
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//{
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// get { return bleeding; }
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// set { bleeding = MathHelper.Clamp(value, 0.0f, 100.0f); }
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//}
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public Wearable WearingItem
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{
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get { return wearingItem; }
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set { wearingItem = value; }
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}
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public WearableSprite WearingItemSprite
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{
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get { return wearingItemSprite; }
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set { wearingItemSprite = value; }
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}
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public Limb (Character character, XElement element)
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{
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this.character = character;
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dir = Direction.Right;
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doesFlip = ToolBox.GetAttributeBool(element, "flip", false);
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body = new PhysicsBody(element);
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if (ToolBox.GetAttributeBool(element, "ignorecollisions", false))
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{
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body.CollisionCategories = Category.None;
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body.CollidesWith = Category.None;
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ignoreCollisions = true;
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}
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else
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{
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//limbs don't collide with each other
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body.CollisionCategories = Physics.CollisionCharacter;
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body.CollidesWith = Physics.CollisionAll & ~Physics.CollisionCharacter & ~Physics.CollisionMisc;
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}
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impactTolerance = ToolBox.GetAttributeFloat(element, "impacttolerance", character.IsHumanoid ? 15.0f : 50.0f);
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body.UserData = this;
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refJointIndex = -1;
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if (element.Attribute("type") != null)
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{
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try
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{
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type = (LimbType)Enum.Parse(typeof(LimbType), element.Attribute("type").Value, true);
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}
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catch
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{
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type = LimbType.None;
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DebugConsole.ThrowError("Error in "+element+"! ''"+element.Attribute("type").Value+"'' is not a valid limb type");
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}
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Vector2 jointPos = ToolBox.GetAttributeVector2(element, "pullpos", Vector2.Zero);
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jointPos = ConvertUnits.ToSimUnits(jointPos);
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stepOffset = ToolBox.GetAttributeVector2(element, "stepoffset", Vector2.Zero);
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stepOffset = ConvertUnits.ToSimUnits(stepOffset);
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refJointIndex = ToolBox.GetAttributeInt(element, "refjoint", -1);
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pullJoint = new FixedMouseJoint(body.FarseerBody, jointPos);
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pullJoint.Enabled = false;
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pullJoint.MaxForce = ((type == LimbType.LeftHand || type == LimbType.RightHand) ? 400.0f : 150.0f) * body.Mass;
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GameMain.World.AddJoint(pullJoint);
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}
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else
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{
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type = LimbType.None;
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}
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steerForce = ToolBox.GetAttributeFloat(element, "steerforce", 0.0f);
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//maxHealth = Math.Max(ToolBox.GetAttributeFloat(element, "health", 100.0f),1.0f);
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armorSector = ToolBox.GetAttributeVector2(element, "armorsector", Vector2.Zero);
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armorSector.X = MathHelper.ToRadians(armorSector.X);
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armorSector.Y = MathHelper.ToRadians(armorSector.Y);
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armorValue = Math.Max(ToolBox.GetAttributeFloat(element, "armor", 0.0f), 0.0f);
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body.BodyType = BodyType.Dynamic;
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body.FarseerBody.AngularDamping = LimbAngularDamping;
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foreach (XElement subElement in element.Elements())
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{
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switch (subElement.Name.ToString().ToLower())
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{
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case "sprite":
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string spritePath = subElement.Attribute("texture").Value;
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if (character.Info!=null)
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{
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spritePath = spritePath.Replace("[GENDER]", (character.Info.Gender == Gender.Female) ? "f" : "");
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spritePath = spritePath.Replace("[HEADID]", character.Info.HeadSpriteId.ToString());
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}
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sprite = new Sprite(subElement, "", spritePath);
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break;
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case "damagedsprite":
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string damagedSpritePath = subElement.Attribute("texture").Value;
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if (character.Info != null)
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{
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damagedSpritePath = damagedSpritePath.Replace("[GENDER]", (character.Info.Gender == Gender.Female) ? "f" : "");
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damagedSpritePath = damagedSpritePath.Replace("[HEADID]", character.Info.HeadSpriteId.ToString());
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}
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damagedSprite = new Sprite(subElement, "", damagedSpritePath);
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break;
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case "attack":
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attack = new Attack(subElement);
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break;
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case "sound":
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hitSound = Sound.Load(ToolBox.GetAttributeString(subElement, "file", ""));
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break;
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}
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}
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}
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public void Move(Vector2 pos, float amount, bool pullFromCenter=false)
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{
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Vector2 pullPos = body.SimPosition;
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if (pullJoint!=null && !pullFromCenter)
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{
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pullPos = pullJoint.WorldAnchorA;
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}
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animTargetPos = pos;
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Vector2 vel = body.LinearVelocity;
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Vector2 deltaPos = pos - pullPos;
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deltaPos *= amount;
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body.ApplyLinearImpulse((deltaPos - vel * 0.5f) * body.Mass, pullPos);
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}
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public AttackResult AddDamage(Vector2 simPosition, DamageType damageType, float amount, float bleedingAmount, bool playSound)
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{
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DamageSoundType damageSoundType = (damageType == DamageType.Blunt) ? DamageSoundType.LimbBlunt : DamageSoundType.LimbSlash;
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bool hitArmor = false;
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float totalArmorValue = 0.0f;
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if (armorValue>0.0f && SectorHit(armorSector, simPosition))
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{
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hitArmor = true;
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totalArmorValue += armorValue;
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}
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if (wearingItem!=null &&
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wearingItem.ArmorValue>0.0f &&
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SectorHit(wearingItem.ArmorSectorLimits, simPosition))
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{
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hitArmor = true;
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totalArmorValue += wearingItem.ArmorValue;
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}
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if (hitArmor)
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{
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totalArmorValue = Math.Max(totalArmorValue, 0.0f);
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damageSoundType = DamageSoundType.LimbArmor;
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amount = Math.Max(0.0f, amount - totalArmorValue);
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bleedingAmount = Math.Max(0.0f, bleedingAmount - totalArmorValue);
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}
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if (playSound)
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{
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SoundPlayer.PlayDamageSound(damageSoundType, amount, ConvertUnits.ToDisplayUnits(simPosition));
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}
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//Bleeding += bleedingAmount;
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//Damage += amount;
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float bloodAmount = hitArmor || bleedingAmount<=0.0f ? 0 : (int)Math.Min((int)(amount * 2.0f), 20);
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for (int i = 0; i < bloodAmount; i++)
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{
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Vector2 particleVel = SimPosition - simPosition;
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if (particleVel != Vector2.Zero) particleVel = Vector2.Normalize(particleVel);
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GameMain.ParticleManager.CreateParticle("blood",
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WorldPosition,
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particleVel * Rand.Range(100.0f, 300.0f), 0.0f, character.AnimController.CurrentHull);
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}
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for (int i = 0; i < bloodAmount / 2; i++)
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{
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GameMain.ParticleManager.CreateParticle("waterblood", WorldPosition, Vector2.Zero, 0.0f, character.AnimController.CurrentHull);
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}
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damage += Math.Max(amount,bleedingAmount) / character.MaxHealth * 100.0f;
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return new AttackResult(amount, bleedingAmount, hitArmor);
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}
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public bool SectorHit(Vector2 armorSector, Vector2 simPosition)
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{
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if (armorSector == Vector2.Zero) return false;
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float rot = body.Rotation;
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if (Dir == -1) rot -= MathHelper.Pi;
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Vector2 armorLimits = new Vector2(rot - armorSector.X * Dir, rot - armorSector.Y * Dir);
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float mid = (armorLimits.X + armorLimits.Y) / 2.0f;
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float angleDiff = MathUtils.GetShortestAngle(MathUtils.VectorToAngle(simPosition - SimPosition), mid);
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return (Math.Abs(angleDiff) < (armorSector.Y - armorSector.X) / 2.0f);
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}
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public void Update(float deltaTime)
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{
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if (!character.IsDead) damage = Math.Max(0.0f, damage-deltaTime*0.1f);
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if (burnt > 0.0f) Burnt -= deltaTime;
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if (LinearVelocity.X>100.0f)
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{
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//DebugConsole.ThrowError("CHARACTER EXPLODED");
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foreach (Limb limb in character.AnimController.Limbs)
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{
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limb.body.ResetDynamics();
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limb.body.SetTransform(character.AnimController.RefLimb.SimPosition, 0.0f);
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}
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}
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if (inWater)
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{
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//buoyancy
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Vector2 buoyancy = new Vector2(0, Mass * 9.6f);
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//drag
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Vector2 velDir = Vector2.Normalize(LinearVelocity);
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Vector2 line = new Vector2((float)Math.Cos(body.Rotation), (float)Math.Sin(body.Rotation));
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line *= ConvertUnits.ToSimUnits(sprite.size.Y);
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Vector2 normal = new Vector2(-line.Y, line.X);
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normal = Vector2.Normalize(-normal);
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float dragDot = Vector2.Dot(normal, velDir);
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Vector2 dragForce = Vector2.Zero;
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if (dragDot > 0)
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{
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float vel = LinearVelocity.Length()*2.0f;
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float drag = dragDot * vel * vel
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* ConvertUnits.ToSimUnits(sprite.size.Y);
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dragForce = drag * -velDir;
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//if (dragForce.Length() > 100.0f) { }
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}
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body.ApplyForce(dragForce + buoyancy);
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body.ApplyTorque(body.AngularVelocity * body.Mass * -0.08f);
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}
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if (character.IsDead) return;
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soundTimer -= deltaTime;
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//if (MathUtils.RandomFloat(0.0f, 1000.0f) < Bleeding)
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//{
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// Game1.particleManager.CreateParticle(
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// !inWater ? "blood" : "waterblood",
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// SimPosition, Vector2.Zero);
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//}
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}
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public void Draw(SpriteBatch spriteBatch)
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{
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float brightness = 1.0f - (burnt / 100.0f) * 0.5f;
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Color color = new Color(brightness, brightness, brightness);
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body.Dir = Dir;
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if (wearingItem == null || !wearingItemSprite.HideLimb)
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{
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body.Draw(spriteBatch, sprite, color);
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}
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else
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{
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body.UpdateDrawPosition();
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}
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if (wearingItem != null)
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{
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SpriteEffects spriteEffect = (dir == Direction.Right) ? SpriteEffects.None : SpriteEffects.FlipHorizontally;
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Vector2 origin = wearingItemSprite.Sprite.Origin;
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if (body.Dir == -1.0f) origin.X = wearingItemSprite.Sprite.SourceRect.Width - origin.X;
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float depth = sprite.Depth - 0.000001f;
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if (wearingItemSprite.DepthLimb!=LimbType.None)
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{
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Limb depthLimb = character.AnimController.GetLimb(wearingItemSprite.DepthLimb);
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if (depthLimb!=null)
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{
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depth = depthLimb.sprite.Depth - 0.000001f;
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}
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}
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wearingItemSprite.Sprite.Draw(spriteBatch,
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new Vector2(body.DrawPosition.X, -body.DrawPosition.Y),
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color, origin,
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-body.DrawRotation,
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1.0f, spriteEffect, depth);
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}
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if (damage>0.0f && damagedSprite!=null)
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{
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SpriteEffects spriteEffect = (dir == Direction.Right) ? SpriteEffects.None : SpriteEffects.FlipHorizontally;
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float depth = sprite.Depth - 0.0000015f;
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damagedSprite.Draw(spriteBatch,
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new Vector2(body.DrawPosition.X, -body.DrawPosition.Y),
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color*Math.Min(damage/50.0f,1.0f), sprite.origin,
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-body.DrawRotation,
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1.0f, spriteEffect, depth);
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}
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if (!GameMain.DebugDraw) return;
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if (pullJoint!=null)
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{
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Vector2 pos = ConvertUnits.ToDisplayUnits(pullJoint.WorldAnchorB);
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GUI.DrawRectangle(spriteBatch, new Rectangle((int)pos.X, (int)-pos.Y, 5, 5), Color.Red, true);
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}
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if (bodyShapeTexture == null)
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{
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switch (body.bodyShape)
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{
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case PhysicsBody.Shape.Rectangle:
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bodyShapeTexture = GUI.CreateRectangle(
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(int)ConvertUnits.ToDisplayUnits(body.width),
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(int)ConvertUnits.ToDisplayUnits(body.height));
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break;
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case PhysicsBody.Shape.Capsule:
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bodyShapeTexture = GUI.CreateCapsule(
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(int)ConvertUnits.ToDisplayUnits(body.radius),
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(int)ConvertUnits.ToDisplayUnits(body.height));
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break;
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case PhysicsBody.Shape.Circle:
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bodyShapeTexture = GUI.CreateCircle((int)ConvertUnits.ToDisplayUnits(body.radius));
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break;
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}
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}
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spriteBatch.Draw(
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bodyShapeTexture,
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new Vector2(body.DrawPosition.X, -body.DrawPosition.Y),
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null,
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Color.White,
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-body.DrawRotation,
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new Vector2(bodyShapeTexture.Width / 2, bodyShapeTexture.Height / 2), 1.0f, SpriteEffects.None, 0.0f);
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}
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public void Remove()
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{
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sprite.Remove();
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body.Remove();
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if (hitSound!=null) hitSound.Remove();
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}
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}
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}
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