336 lines
12 KiB
C#
336 lines
12 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Xml.Linq;
|
|
using FarseerPhysics;
|
|
using FarseerPhysics.Collision.Shapes;
|
|
using FarseerPhysics.Common;
|
|
using FarseerPhysics.Dynamics;
|
|
using FarseerPhysics.Dynamics.Joints;
|
|
using FarseerPhysics.Factories;
|
|
using Microsoft.Xna.Framework;
|
|
using Microsoft.Xna.Framework.Graphics;
|
|
|
|
namespace Subsurface.Items.Components
|
|
{
|
|
class Rope : ItemComponent
|
|
{
|
|
PhysicsBody[] ropeBodies;
|
|
RevoluteJoint[] ropeJoints;
|
|
|
|
DistanceJoint gunJoint;
|
|
|
|
float pullForce;
|
|
|
|
Sprite sprite;
|
|
|
|
float reload;
|
|
|
|
float prevDir;
|
|
|
|
float sectionLength;
|
|
|
|
Item projectile;
|
|
|
|
Vector2 projectileAnchor;
|
|
|
|
private Vector2 BarrelPos
|
|
{
|
|
get
|
|
{
|
|
Vector2 barrelPos = Vector2.Zero;
|
|
|
|
//RangedWeapon weapon = item.GetComponent<RangedWeapon>();
|
|
//if (weapon != null) barrelPos = weapon.barrelPos;
|
|
|
|
return barrelPos;
|
|
}
|
|
}
|
|
|
|
private Vector2 TransformedBarrelPos
|
|
{
|
|
get
|
|
{
|
|
Vector2 barrelPos = Vector2.Zero;
|
|
|
|
RangedWeapon weapon = item.GetComponent<RangedWeapon>();
|
|
if (weapon != null) barrelPos = weapon.TransformedBarrelPos;
|
|
|
|
return barrelPos;
|
|
}
|
|
}
|
|
|
|
|
|
public Rope(Item item, XElement element)
|
|
: base(item, element)
|
|
{
|
|
string spritePath = ToolBox.GetAttributeString(element, "sprite", "");
|
|
if (spritePath == "") DebugConsole.ThrowError("Sprite "+spritePath+" in "+element+" not found!");
|
|
|
|
float length = ConvertUnits.ToSimUnits(ToolBox.GetAttributeFloat(element, "length", 200.0f));
|
|
|
|
pullForce = ToolBox.GetAttributeFloat(element, "pullforce", 10.0f);
|
|
|
|
projectileAnchor = Vector2.Zero;
|
|
projectileAnchor.X = ToolBox.GetAttributeFloat(element, "projectileanchorx", 0.0f);
|
|
projectileAnchor.Y = ToolBox.GetAttributeFloat(element, "projectileanchory", 0.0f);
|
|
projectileAnchor = ConvertUnits.ToSimUnits(projectileAnchor);
|
|
|
|
characterUsable = ToolBox.GetAttributeBool(element, "characterusable", false);
|
|
|
|
sprite = new Sprite(spritePath, new Vector2(0.5f,0.5f));
|
|
sectionLength = ConvertUnits.ToSimUnits(sprite.size.X);
|
|
|
|
|
|
Path ropePath = new Path();
|
|
ropePath.Add(item.body.SimPosition);
|
|
ropePath.Add(item.body.SimPosition + new Vector2(length, 0.0f));
|
|
ropePath.Closed = false;
|
|
|
|
Vertices box = PolygonTools.CreateRectangle(sectionLength, 0.05f);
|
|
PolygonShape shape = new PolygonShape(box, 5);
|
|
|
|
List<Body>ropeList = PathManager.EvenlyDistributeShapesAlongPath(Game1.World, ropePath, shape, BodyType.Dynamic, (int)(length/sectionLength));
|
|
|
|
ropeBodies = new PhysicsBody[ropeList.Count()];
|
|
for (int i = 0; i<ropeBodies.Length; i++)
|
|
{
|
|
ropeList[i].Mass = 0.01f;
|
|
ropeList[i].Enabled = false;
|
|
//only collide with the map
|
|
ropeList[i].CollisionCategories = Physics.CollisionMisc;
|
|
ropeList[i].CollidesWith = Physics.CollisionWall;
|
|
|
|
ropeBodies[i] = new PhysicsBody(ropeList[i]);
|
|
}
|
|
|
|
List<RevoluteJoint> joints = PathManager.AttachBodiesWithRevoluteJoint(Game1.World, ropeList,
|
|
new Vector2(-sectionLength/2, 0.0f), new Vector2(sectionLength/2, 0.0f), false, false);
|
|
|
|
ropeJoints = new RevoluteJoint[joints.Count+1];
|
|
//ropeJoints[0] = JointFactory.CreateRevoluteJoint(Game1.world, item.body, ropeList[0], new Vector2(0f, -0.0f));
|
|
for (int i = 0; i < joints.Count; i++)
|
|
{
|
|
var distanceJoint = JointFactory.CreateDistanceJoint(Game1.World, ropeList[i], ropeList[i + 1]);
|
|
|
|
distanceJoint.Length = sectionLength;
|
|
distanceJoint.DampingRatio = 1.0f;
|
|
ropeJoints[i] = joints[i];
|
|
}
|
|
|
|
}
|
|
|
|
public override void SecondaryUse(float deltaTime, Character character = null)
|
|
{
|
|
if (reload > 0.0f) return;
|
|
|
|
bool first = true;
|
|
for (int i = 0; i < ropeBodies.Length - 1; i++)
|
|
{
|
|
if (ropeBodies[i].UserData == null || (bool)ropeBodies[i].UserData) continue;
|
|
|
|
if (first)
|
|
{
|
|
Vector2 dist = gunJoint.WorldAnchorA - ropeJoints[i].WorldAnchorA;
|
|
float length = dist.Length();
|
|
|
|
if (gunJoint.Length < 0.011 && length*0.5f<sectionLength)
|
|
{
|
|
NextSection(i);
|
|
}
|
|
else
|
|
{
|
|
gunJoint.Length = Math.Max(gunJoint.Length-0.01f,0.01f);
|
|
gunJoint.Frequency = 30;
|
|
gunJoint.DampingRatio = 0.05f;
|
|
//gunJoint.MotorEnabled = true;
|
|
//gunJoint.MotorSpeed = -150.0f;
|
|
//ropeBodies[i + 1].ApplyForce(dist / length * pullForce);
|
|
//ropeJoints[0].LocalAnchorA = new Vector2(ropeJoints[0].LocalAnchorA.X-0.05f,ropeJoints[0].LocalAnchorA.Y);
|
|
//ropeBodies[i].SmoothRotate(item.body.Rotation);
|
|
}
|
|
|
|
first = false;
|
|
}
|
|
else
|
|
{
|
|
//Vector2 dist = ropeBodies[i].Position - ropeBodies[i + 1].Position;
|
|
//float length = dist.Length();
|
|
|
|
//ropeBodies[i + 1].ApplyForce(dist / length * pullForce * 0.1f);
|
|
}
|
|
}
|
|
}
|
|
|
|
private void NextSection(int i)
|
|
{
|
|
gunJoint.Length = sectionLength;
|
|
ropeBodies[i].UserData = true;
|
|
ropeBodies[i].Enabled = false;
|
|
|
|
//if (ropeJoints[0] != null) Game1.world.RemoveJoint(ropeJoints[0]);
|
|
//ropeJoints[0] = JointFactory.CreateRevoluteJoint(Game1.world,
|
|
// item.body.FarseerBody, ropeBodies[i + 1].FarseerBody,
|
|
// BarrelPos, new Vector2(-sectionLength / 2, 0.0f));
|
|
|
|
AttachGunJoint(ropeBodies[i + 1].FarseerBody);
|
|
|
|
if (i == ropeBodies.Length - 2)
|
|
{
|
|
item.Combine(projectile);
|
|
ropeBodies[ropeBodies.Length - 1].Enabled = false;
|
|
isActive = false;
|
|
}
|
|
}
|
|
|
|
public override void Update(float deltaTime, Camera cam)
|
|
{
|
|
if (reload>0.0f) reload -= deltaTime;
|
|
|
|
//for (int i = 0; i < ropeBodies.Length - 1; i++)
|
|
//{
|
|
// if (ropeBodies[i].UserData == null || (bool)ropeBodies[i].UserData == true) continue;
|
|
// ropeBodies[i].SmoothRotate(item.body.Rotation);
|
|
//}
|
|
|
|
int len = 1;
|
|
for (int i = 0; i < ropeBodies.Length - 1; i++)
|
|
{
|
|
if (ropeBodies[i].UserData == null || (bool)ropeBodies[i].UserData) continue;
|
|
len++;
|
|
}
|
|
|
|
if (Vector2.Distance(TransformedBarrelPos, projectile.SimPosition)>len*sectionLength)
|
|
{
|
|
Vector2 stopForce = projectile.SimPosition - ropeBodies[ropeBodies.Length-1].SimPosition;
|
|
stopForce = Vector2.Normalize(stopForce);
|
|
|
|
float dotProduct = Vector2.Dot(stopForce, Vector2.Normalize(projectile.body.LinearVelocity));
|
|
|
|
if (dotProduct<0)
|
|
projectile.body.ApplyLinearImpulse(-stopForce*dotProduct * projectile.body.LinearVelocity.Length() * projectile.body.Mass);
|
|
}
|
|
|
|
if (item.body.Dir!=prevDir)
|
|
{
|
|
gunJoint.LocalAnchorA =
|
|
new Vector2(
|
|
-gunJoint.LocalAnchorA.X,
|
|
BarrelPos.Y);
|
|
|
|
prevDir = -prevDir;
|
|
}
|
|
|
|
if (!projectile.body.Enabled || !item.body.Enabled)
|
|
{
|
|
//attempt to recontain the projectile in the launcher
|
|
//eq automatically reload a spear into a speargun when picking the spear up
|
|
if (!projectile.body.Enabled) item.Combine(projectile);
|
|
|
|
foreach (PhysicsBody b in ropeBodies)
|
|
{
|
|
b.Enabled = false;
|
|
}
|
|
foreach (var joint in ropeJoints)
|
|
{
|
|
if (joint != null) joint.Enabled = false;
|
|
}
|
|
isActive = false;
|
|
}
|
|
}
|
|
|
|
public override void Draw(SpriteBatch spriteBatch, bool editing)
|
|
{
|
|
base.Draw(spriteBatch);
|
|
|
|
if (!isActive) return;
|
|
|
|
RevoluteJoint firstJoint = null;
|
|
|
|
for (int i = 0; i<ropeBodies.Length-1; i++)
|
|
{
|
|
if (!ropeBodies[i].Enabled) continue;
|
|
|
|
if (firstJoint==null) firstJoint = ropeJoints[i];
|
|
|
|
DrawSection(spriteBatch, ropeJoints[i].WorldAnchorA, ropeJoints[i+1].WorldAnchorA, i);
|
|
}
|
|
|
|
if (gunJoint == null || firstJoint==null) return;
|
|
|
|
DrawSection(spriteBatch, gunJoint.WorldAnchorA, firstJoint.WorldAnchorA, 0);
|
|
|
|
}
|
|
|
|
private void DrawSection(SpriteBatch spriteBatch, Vector2 start, Vector2 end, int i)
|
|
{
|
|
start.Y = -start.Y;
|
|
end.Y = -end.Y;
|
|
|
|
spriteBatch.Draw(sprite.Texture,
|
|
ConvertUnits.ToDisplayUnits(start), null, Color.White,
|
|
MathUtils.VectorToAngle(end - start),
|
|
new Vector2(0.0f, sprite.size.Y / 2.0f),
|
|
new Vector2((ConvertUnits.ToDisplayUnits(Vector2.Distance(start, end))) / sprite.Texture.Width, 1.0f),
|
|
SpriteEffects.None,
|
|
sprite.Depth + i*0.00001f);
|
|
}
|
|
|
|
public void Attach(Item projectile)
|
|
{
|
|
reload = 0.5f;
|
|
isActive = true;
|
|
|
|
this.projectile = projectile;
|
|
//Projectile projectileComponent = projectile.GetComponent<Projectile>();
|
|
|
|
foreach (PhysicsBody b in ropeBodies)
|
|
{
|
|
b.SetTransform(item.body.SimPosition, 0.0f);
|
|
b.UserData = false;
|
|
b.Enabled = true;
|
|
}
|
|
|
|
foreach (var joint in ropeJoints)
|
|
{
|
|
if (joint!=null) joint.Enabled = true;
|
|
}
|
|
|
|
ropeBodies[ropeBodies.Length - 1].SetTransform(projectile.body.SimPosition, projectile.body.Rotation);
|
|
|
|
//attach projectile to the last section of the rope
|
|
if (ropeJoints[ropeJoints.Length-1] != null) Game1.World.RemoveJoint(ropeJoints[ropeJoints.Length-1]);
|
|
ropeJoints[ropeJoints.Length - 1] = JointFactory.CreateRevoluteJoint(Game1.World,
|
|
projectile.body.FarseerBody, ropeBodies[ropeBodies.Length - 1].FarseerBody,
|
|
projectileAnchor, new Vector2(sectionLength / 2, 0.0f));
|
|
|
|
AttachGunJoint(ropeBodies[0].FarseerBody);
|
|
|
|
prevDir = item.body.Dir;
|
|
}
|
|
|
|
private void AttachGunJoint(Body body)
|
|
{
|
|
float rotation = (item.body.Dir == -1.0f) ? item.body.Rotation - MathHelper.Pi : item.body.Rotation;
|
|
body.SetTransform(TransformedBarrelPos, rotation);
|
|
//Vector2 axis = new Vector2((float)Math.Cos(rotation), (float)Math.Sin(rotation));
|
|
|
|
if (gunJoint != null) Game1.World.RemoveJoint(gunJoint);
|
|
gunJoint = new DistanceJoint(item.body.FarseerBody, body, BarrelPos,
|
|
new Vector2(sectionLength / 2, 0.0f));
|
|
|
|
gunJoint.Length = sectionLength;
|
|
|
|
//gunJoint.LocalAnchorA = BarrelPos;
|
|
//gunJoint.LocalAnchorB = new Vector2(sectionLength / 2, 0.0f);
|
|
//gunJoint.UpperLimit = sectionLength;
|
|
//gunJoint.LowerLimit = 0.0f;
|
|
//gunJoint.LimitEnabled = true;
|
|
//gunJoint.ReferenceAngle = 0.0f;
|
|
|
|
Game1.World.AddJoint(gunJoint);
|
|
}
|
|
|
|
}
|
|
}
|