public Rope(Item item, XElement element)
: base(item, element)
{
string spritePath = element.GetAttributeString("sprite", "");
if (spritePath == "")
{
DebugConsole.ThrowError("Sprite " + spritePath + " in " + element + " not found!");
}
float length = ConvertUnits.ToSimUnits(element.GetAttributeFloat("length", 200.0f));
pullForce = element.GetAttributeFloat("pullforce", 10.0f);
projectileAnchor = Vector2.Zero;
projectileAnchor.X = element.GetAttributeFloat("projectileanchorx", 0.0f);
projectileAnchor.Y = element.GetAttributeFloat("projectileanchory", 0.0f);
projectileAnchor = ConvertUnits.ToSimUnits(projectileAnchor);
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(GameMain.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.CollisionItem;
ropeList[i].CollidesWith = Physics.CollisionWall;
//ropeBodies[i] = new PhysicsBody(ropeList[i]);
}
List <RevoluteJoint> joints = PathManager.AttachBodiesWithRevoluteJoint(GameMain.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(GameMain.World, ropeList[i], ropeList[i + 1]);
distanceJoint.Length = sectionLength;
distanceJoint.DampingRatio = 1.0f;
ropeJoints[i] = joints[i];
}
}
public override void LoadContent()
{
base.LoadContent();
World.Gravity = new Vector2(0, 9.82f);
_border = new Border(World, Lines, Framework.GraphicsDevice);
// Bridge
// We make a path using 2 points.
Path bridgePath = new Path();
bridgePath.Add(new Vector2(-15, 5));
bridgePath.Add(new Vector2(15, 5));
bridgePath.Closed = false;
Vertices box = PolygonTools.CreateRectangle(0.125f, 0.5f);
PolygonShape shape = new PolygonShape(box, 20);
_bridgeBodies = PathManager.EvenlyDistributeShapesAlongPath(World, bridgePath, shape, BodyType.Dynamic, 29);
// Attach the first and last fixtures to the world
Body anchor = new Body(World, Vector2.Zero);
anchor.BodyType = BodyType.Static;
World.AddJoint(new RevoluteJoint(_bridgeBodies[0], anchor, _bridgeBodies[0].Position - new Vector2(0.5f, 0f), true));
World.AddJoint(new RevoluteJoint(_bridgeBodies[_bridgeBodies.Count - 1], anchor, _bridgeBodies[_bridgeBodies.Count - 1].Position + new Vector2(0.5f, 0f), true));
PathManager.AttachBodiesWithRevoluteJoint(World, _bridgeBodies, new Vector2(0f, -0.5f), new Vector2(0f, 0.5f), false, true);
// Soft body
// We make a rectangular path.
Path rectanglePath = new Path();
rectanglePath.Add(new Vector2(-6, -11));
rectanglePath.Add(new Vector2(-6, 1));
rectanglePath.Add(new Vector2(6, 1));
rectanglePath.Add(new Vector2(6, -11));
rectanglePath.Closed = true;
// Creating two shapes. A circle to form the circle and a rectangle to stabilize the soft body.
Shape[] shapes = new Shape[2];
shapes[0] = new PolygonShape(PolygonTools.CreateRectangle(0.5f, 0.5f, new Vector2(-0.1f, 0f), 0f), 1f);
shapes[1] = new CircleShape(0.5f, 1f);
// We distribute the shapes in the rectangular path.
_softBodies = PathManager.EvenlyDistributeShapesAlongPath(World, rectanglePath, shapes, BodyType.Dynamic, 30);
// Attach the bodies together with revolute joints. The rectangular form will converge to a circular form.
PathManager.AttachBodiesWithRevoluteJoint(World, _softBodies, new Vector2(0f, -0.5f), new Vector2(0f, 0.5f), true, true);
// GFX
_bridgeBox = new Sprite(ContentWrapper.TextureFromShape(shape, ContentWrapper.Orange, ContentWrapper.Brown));
_softBodyBox = new Sprite(ContentWrapper.TextureFromShape(shapes[0], ContentWrapper.Green, ContentWrapper.Black));
_softBodyBox.Origin += new Vector2(ConvertUnits.ToDisplayUnits(0.1f), 0f);
_softBodyCircle = new Sprite(ContentWrapper.TextureFromShape(shapes[1], ContentWrapper.Lime, ContentWrapper.Grey));
}
public Chain(Vector2 pathBeginning, Vector2 pathEnd, Vector2 revolutePosition1, bool useSecondRevolute, Vector2 revolutePosition2, int numberOfChainlinks, Body revoluteBody, bool breakable)
{
chainTexture = ScreenManager.Content.Load <Texture2D>("Enemies/kette");
origin = new Vector2(chainTexture.Width / 2, chainTexture.Height / 2);
//Chain start / end
Path path = new Path();
path.Add(pathBeginning);
path.Add(pathEnd);
//A single chainlink
PolygonShape shape = new PolygonShape(PolygonTools.CreateRectangle(0.125f, 0.6f), 20);
//Use PathFactory to create all the chainlinks based on the chainlink created before.
chainLinks = PathManager.EvenlyDistributeShapesAlongPath(PhysicsGameScreen.World, path, shape, BodyType.Dynamic, numberOfChainlinks);
foreach (Body chainLink in chainLinks)
{
foreach (Fixture f in chainLink.FixtureList)
{
f.Friction = 0.1f;
}
}
//Fix the first chainlink to a Body
FixedRevoluteJoint fixedJoint = new FixedRevoluteJoint(chainLinks[0], Vector2.Zero, revolutePosition1);
PhysicsGameScreen.World.AddJoint(fixedJoint);
RevoluteJoint fixedJoint2 = new RevoluteJoint(chainLinks[numberOfChainlinks -= 2], revoluteBody, new Vector2(chainLinks[numberOfChainlinks -= 2].LocalCenter.X - 0.125f,
chainLinks[numberOfChainlinks -= 2].LocalCenter.Y + 0.6f), revolutePosition2);
PhysicsGameScreen.World.AddJoint(fixedJoint2);
//Attach all the chainlinks together with a revolute joint
List <RevoluteJoint> joints = PathManager.AttachBodiesWithRevoluteJoint(PhysicsGameScreen.World, chainLinks,
new Vector2(0, -0.6f),
new Vector2(0, 0.6f),
false, false);
if (breakable == true)
{
//The chain is breakable
for (int i = 0; i < joints.Count; i++)
{
RevoluteJoint r = joints[i];
r.Breakpoint = 10000f;
//if (r.Broke lower bridge
}
}
}
public Barrier(Texture2D texture, Unit start, Unit end, World world, Game game, Color color)
: base(texture, Vector2.Zero, DrawingHelper.DrawingLevel.Low, game, world)
{
Color = color;
EffectParticles = new ParticleEngine(30, texture, Vector2.Zero, color, Vector2.Zero, 1, 0, 10, DrawingHelper.DrawingLevel.Top, game);
SyncedGameCollection.ComponentCollection.Add(EffectParticles);
// Units to follow
_start = start;
_end = end;
// create two static hiddenBodies that mirror the position of the units
hiddenBody1 = BodyFactory.CreateCircle(world, texture.Width / 2, 1, _start.RigidBody.Position); //_start.RigidBody;
hiddenBody2 = BodyFactory.CreateCircle(world, texture.Width / 2, 1, _end.RigidBody.Position); //_end.RigidBody;
hiddenBody1.CollisionCategories = Category.None;
hiddenBody2.CollisionCategories = Category.None;
hiddenBody1.CollidesWith = Category.None;
hiddenBody2.CollidesWith = Category.None;
hiddenBody1.BodyType = BodyType.Static;
hiddenBody2.BodyType = BodyType.Static;
hiddenBody1.Position = _start.RigidBody.Position;
hiddenBody2.Position = _end.RigidBody.Position;
hiddenBody1.UserData = hiddenBody2.UserData = "";
// create path object and set it to the init position.
Path barrierPath = new Path();
barrierPath.Add(start.RigidBody.Position);
barrierPath.Add(end.RigidBody.Position);
barrierPath.Closed = false;
// create barrier particle
Vertices barrierParticle = PolygonTools.CreateCircle(ConvertUnits.ToSimUnits(texture.Width * 4), 8);
Shape shape = new PolygonShape(barrierParticle, 0f);
// distribute barrierParticle positions along the path between the two units.
_barrierBodies = PathManager.EvenlyDistributeShapesAlongPath(world, barrierPath, shape, BodyType.Dynamic, 30);
// fix the shapes together with the end and start point
JointFactory.CreateRevoluteJoint(world, hiddenBody1, _barrierBodies[0], new Vector2(0f, 0f));
JointFactory.CreateRevoluteJoint(world, hiddenBody2, _barrierBodies[_barrierBodies.Count - 1], new Vector2(0f, 0f));
// fix all the barrierParticles together in the path
PathManager.AttachBodiesWithRevoluteJoint(world, _barrierBodies, new Vector2(0f, 0.5f), new Vector2(0f, 0.5f), false, false);
// Set up OnCollision fale safe.
for (int i = 0; i < _barrierBodies.Count; i++)
{
_barrierBodies[i].CollisionCategories = Category.Cat10;
_barrierBodies[i].CollidesWith = Category.Cat5; /* should only collide with grabbables*/
_barrierBodies[i].UserData = "BARRIER";
_barrierBodies[i].OnCollision += OnCollision;
}
Deactivated();
}
private PathTest()
{
//Single body that moves around path
_movingBody = BodyFactory.CreateBody(World);
_movingBody.Position = new Vector2(-25, 25);
_movingBody.BodyType = BodyType.Dynamic;
_movingBody.CreateFixture(new PolygonShape(PolygonTools.CreateRectangle(0.5f, 0.5f), 1));
//Static shape made up of bodies
_path = new Path();
_path.Add(new Vector2(0, 20));
_path.Add(new Vector2(5, 15));
_path.Add(new Vector2(20, 18));
_path.Add(new Vector2(15, 1));
_path.Add(new Vector2(-5, 14));
_path.Closed = true;
CircleShape shape = new CircleShape(0.25f, 1);
PathManager.EvenlyDistributeShapesAlongPath(World, _path, shape, BodyType.Static, 100);
//Smaller shape that is movable. Created from small rectangles and circles.
Vector2 xform = new Vector2(0.5f, 0.5f);
_path.Scale(ref xform);
xform = new Vector2(5, 5);
_path.Translate(ref xform);
List <Shape> shapes = new List <Shape>(2);
shapes.Add(new PolygonShape(PolygonTools.CreateRectangle(0.5f, 0.5f, new Vector2(-0.1f, 0), 0), 1));
shapes.Add(new CircleShape(0.5f, 1));
List <Body> bodies = PathManager.EvenlyDistributeShapesAlongPath(World, _path, shapes, BodyType.Dynamic, 20);
//Attach the bodies together with revolute joints
PathManager.AttachBodiesWithRevoluteJoint(World, bodies, new Vector2(0, 0.5f), new Vector2(0, -0.5f), true,
true);
xform = new Vector2(-25, 0);
_path.Translate(ref xform);
Body body = BodyFactory.CreateBody(World);
body.BodyType = BodyType.Static;
//Static shape made up of edges
PathManager.ConvertPathToEdges(_path, body, 25);
body.Position -= new Vector2(0, 10);
xform = new Vector2(0, 15);
_path.Translate(ref xform);
PathManager.ConvertPathToPolygon(_path, body, 1, 50);
}
public Whip(Texture2D tex, Vector2 start, Vector2 end, World world)
{
this.tex = tex;
this.world = world;
this.start = start / 64;
this.end = end / 64;
Path path = new Path();
path.Add(this.start);
path.Add(this.end);
//A single chainlink
PolygonShape shape = new PolygonShape(PolygonTools.CreateRectangle(0.125f, 0.125f), 20);
// ChainLink shape = new ChainLink(100);
//Use PathFactory to create all the chainlinks based on the chainlink created before.
chainLinks = PathManager.EvenlyDistributeShapesAlongPath(world, path, shape, BodyType.Dynamic, 30);
foreach (Body chainLink in chainLinks)
{
foreach (Fixture f in chainLink.FixtureList)
{
f.Friction = 0.2f;
f.CollisionCategories = Category.Cat3;
Category whipMask = Category.All ^ Category.Cat2;
f.CollidesWith = whipMask;
f.Body.BodyId = 8;
f.OnCollision += new OnCollisionEventHandler(OnCollision);
}
}
//Fix the first chainlink to the world
// FixedRevoluteJoint fixedJoint = new FixedRevoluteJoint(chainLinks[0], Vector2.Zero, chainLinks[0].Position);
// Game1.world.AddJoint(fixedJoint);
//Attach all the chainlinks together with a revolute joint. This is the spacing between links
joints = PathManager.AttachBodiesWithRevoluteJoint(world, chainLinks,
new Vector2(0, -0.1f),
new Vector2(0, 0.1f),
false, false);
//The chain is breakable
for (int i = 0; i < joints.Count; i++)
{
RevoluteJoint r = joints[i];
r.Breakpoint = 5000f;
}
}
public override void LoadContent()
{
base.LoadContent();
World.Gravity = new Vector2(0, -9.82f);
_border = new Border(World, ScreenManager, Camera);
/* Bridge */
//We make a path using 2 points.
Path bridgePath = new Path();
bridgePath.Add(new Vector2(-15, -5));
bridgePath.Add(new Vector2(15, -5));
bridgePath.Closed = false;
Vertices box = PolygonTools.CreateRectangle(0.25f / 2f, 1f / 2f);
PolygonShape shape = new PolygonShape(box, 20);
_bridgeBodies = PathManager.EvenlyDistributeShapesAlongPath(World, bridgePath, shape, BodyType.Dynamic, 29);
_bridgeBox = new Sprite(ScreenManager.Assets.TextureFromShape(shape, MaterialType.Dots, Color.SandyBrown, 1f));
//Attach the first and last fixtures to the world
JointFactory.CreateRevoluteJoint(World, HiddenBody, _bridgeBodies[0], new Vector2(0f, 0.5f));
JointFactory.CreateRevoluteJoint(World, HiddenBody, _bridgeBodies[_bridgeBodies.Count - 1], new Vector2(0, -0.5f));
PathManager.AttachBodiesWithRevoluteJoint(World, _bridgeBodies, new Vector2(0f, 0.5f), new Vector2(0f, -0.5f), false, true);
/* Soft body */
//We make a rectangular path.
Path rectanglePath = new Path();
rectanglePath.Add(new Vector2(-6, 11));
rectanglePath.Add(new Vector2(-6, -1));
rectanglePath.Add(new Vector2(6, -1));
rectanglePath.Add(new Vector2(6, 11));
rectanglePath.Closed = true;
//Creating two shapes. A circle to form the circle and a rectangle to stabilize the soft body.
List <Shape> shapes = new List <Shape>(2);
shapes.Add(new PolygonShape(PolygonTools.CreateRectangle(1f / 2f, 1f / 2f, new Vector2(-0.1f, 0f), 0f), 1f));
shapes.Add(new CircleShape(0.5f, 1f));
//We distribute the shapes in the rectangular path.
_softBodies = PathManager.EvenlyDistributeShapesAlongPath(World, rectanglePath, shapes,
BodyType.Dynamic, 30);
_softBodyBox = new Sprite(ScreenManager.Assets.TextureFromShape(shapes[0], MaterialType.Blank, Color.Silver * 0.8f, 1f));
_softBodyBox.Origin += new Vector2(2.4f, 0f);
_softBodyCircle = new Sprite(ScreenManager.Assets.TextureFromShape(shapes[1], MaterialType.Waves, Color.Silver, 1f));
//Attach the bodies together with revolute joints. The rectangular form will converge to a circular form.
PathManager.AttachBodiesWithRevoluteJoint(World, _softBodies, new Vector2(0f, 0.5f), new Vector2(0f, -0.5f),
true, true);
}
public override void Update(GameTime gameTime)
{
if (Path == null)
{
Path = new FarseerPhysics.Common.Path();
Path.Add(position / Level.PixelPerMeter);
Path.Add(new Vector2(position.X, position.Y + Length) / Level.PixelPerMeter);
Path.Closed = false;
float rectLength = (Length / Segments) / Level.PixelPerMeter;
float rectWidth = (Width) / Level.PixelPerMeter;
List <Shape> shapes = new List <Shape>(1);
//shapes.Add(new PolygonShape(PolygonTools.CreateRectangle(Width/Level.PixelPerMeter, (Length/Segments)/Level.PixelPerMeter, new Vector2(0, 0), 0f), 1));
shapes.Add(new PolygonShape(PolygonTools.CreateRectangle(rectWidth, rectLength, new Vector2(rectWidth, rectLength), 0f), 1));
Bodies = PathManager.EvenlyDistributeShapesAlongPath(Level.Physics, Path, shapes, BodyType.Dynamic, Segments);
if (Object1 == null)
{
Bodies.ElementAt(0).BodyType = BodyType.Static;
}
else
{
WeldJoint joint = JointFactory.CreateWeldJoint(Level.Physics, Object1.fixture.Body, Bodies.ElementAt(0), Vector2.Zero, Vector2.Zero);
foreach (Body body in Bodies)
{
foreach (Fixture fix in body.FixtureList)
{
fix.IgnoreCollisionWith(Object1.fixture);
}
}
}
if (Object2 != null)
{
WeldJoint joint = JointFactory.CreateWeldJoint(Level.Physics, Object2.fixture.Body, Bodies.ElementAt(Bodies.Count - 1), Vector2.Zero, Vector2.Zero);
foreach (Body body in Bodies)
{
foreach (Fixture fix in body.FixtureList)
{
fix.IgnoreCollisionWith(Object2.fixture);
}
}
}
PathManager.AttachBodiesWithRevoluteJoint(Level.Physics, Bodies, new Vector2(0, 0.25f), new Vector2(0, -0.25f), false, false);
}
Circle.position = position;
}
private void LoadObstacles()
{
Vertices box = PolygonTools.CreateRectangle(1f, 10f);
PolygonShape shape = new PolygonShape(box, 30);
_bridgeBox =
new Sprite(ScreenManager.Assets.TextureFromShape(shape, MaterialType.Dots, Color.SandyBrown, 1f));
Path bridgePathL = new Path();
bridgePathL.Add(new Vector2(-400, -50));
bridgePathL.Add(new Vector2(0, 0));
bridgePathL.Closed = false;
_bridgeBodiesL = PathManager.EvenlyDistributeShapesAlongPath(World, bridgePathL, shape,
BodyType.Dynamic, 30);
//Attach the first and last fixtures to the world
JointFactory.CreateFixedRevoluteJoint(World, _bridgeBodiesL[0], new Vector2(0f, -0.5f),
_bridgeBodiesL[0].Position);
JointFactory.CreateFixedRevoluteJoint(World, _bridgeBodiesL[_bridgeBodiesL.Count - 1], new Vector2(0, 0.5f),
_bridgeBodiesL[_bridgeBodiesL.Count - 1].Position);
PathManager.AttachBodiesWithRevoluteJoint(World, _bridgeBodiesL, new Vector2(0f, -0.5f),
new Vector2(0f, 0.5f),
false, true);
Path bridgePathR = new Path();
bridgePathR.Add(new Vector2(350, -50));
bridgePathR.Add(new Vector2(0, 0));
bridgePathR.Closed = false;
_bridgeBodiesR = PathManager.EvenlyDistributeShapesAlongPath(World, bridgePathR, shape,
BodyType.Dynamic, 30);
//Attach the first and last fixtures to the world
JointFactory.CreateFixedRevoluteJoint(World, _bridgeBodiesR[0], new Vector2(0f, -0.5f),
_bridgeBodiesR[0].Position);
JointFactory.CreateFixedRevoluteJoint(World, _bridgeBodiesR[_bridgeBodiesR.Count - 1], new Vector2(0, 0.5f),
_bridgeBodiesR[_bridgeBodiesR.Count - 1].Position);
PathManager.AttachBodiesWithRevoluteJoint(World, _bridgeBodiesR, new Vector2(0f, -0.5f),
new Vector2(0f, 0.5f),
false, true);
}
public Rope(Vector2 RopeStart, Vector2 RopeEnd)
{
path.Add(RopeStart);
path.Add(RopeEnd);
ropeText = GameLoop.gameInstance.Content.Load <Texture2D>("Sprites/rope");
shape = new PolygonShape(PolygonTools.CreateRectangle(0.05f, 0.1f), 0.6f);
chainLinks = PathManager.EvenlyDistributeShapesAlongPath(Level.Physics, path, shape, BodyType.Dynamic, 20);
/*
* MovingFixture = FixtureFactory.CreateRectangle(Level.Physics, 2, 2, 1);
*
* MovingFixture.Body.BodyType = BodyType.Static;
* MovingFixture.Body.Position = RopeStart;
*
*/
foreach (Body chainLink in chainLinks)
{
chainLink.LinearDamping = 0.5f;
foreach (Fixture f in chainLink.FixtureList)
{
f.Friction = 2.0f;
f.CollidesWith = CollisionCategory.None;
}
}
lastBody = chainLinks[(chainLinks.Count - 1)];
// weld = new WeldJoint(MovingFixture.Body, chainLinks[0], Vector2.Zero, Vector2.Zero);
// Level.Physics.AddJoint(weld);
RopeJoint rope = new RopeJoint(chainLinks[0], chainLinks[chainLinks.Count - 1], Vector2.Zero, Vector2.Zero);
chainLinks[0].BodyType = BodyType.Static;
MovingBody = chainLinks[0];
PathManager.AttachBodiesWithRevoluteJoint(Level.Physics, chainLinks, new Vector2(0, -0.1f), new Vector2(0, 0.1f),
false, false);
}
private ChainTest()
{
//Ground
BodyFactory.CreateEdge(World, new Vector2(-40.0f, 0.0f), new Vector2(40.0f, 0.0f));
//Chain start / end
Path path = new Path();
path.Add(new Vector2(0, 25));
path.Add(new Vector2(40, 25));
//A single chainlink
PolygonShape shape = new PolygonShape(PolygonTools.CreateRectangle(0.125f, 0.6f), 20);
//Use PathFactory to create all the chainlinks based on the chainlink created before.
List <Body> chainLinks = PathManager.EvenlyDistributeShapesAlongPath(World, path, shape, BodyType.Dynamic, 30);
foreach (Body chainLink in chainLinks)
{
foreach (Fixture f in chainLink.FixtureList)
{
f.Friction = 0.2f;
}
}
//Fix the first chainlink to the world
FixedRevoluteJoint fixedJoint = new FixedRevoluteJoint(chainLinks[0], Vector2.Zero, chainLinks[0].Position);
World.AddJoint(fixedJoint);
//Attach all the chainlinks together with a revolute joint
List <RevoluteJoint> joints = PathManager.AttachBodiesWithRevoluteJoint(World, chainLinks,
new Vector2(0, -0.6f),
new Vector2(0, 0.6f),
false, false);
//The chain is breakable
for (int i = 0; i < joints.Count; i++)
{
RevoluteJoint r = joints[i];
r.Breakpoint = 10000f;
}
}
/// <summary>
/// Creates a chain.
/// </summary>
/// <param name="world">The world.</param>
/// <param name="start">The start.</param>
/// <param name="end">The end.</param>
/// <param name="linkWidth">The width.</param>
/// <param name="linkHeight">The height.</param>
/// <param name="numberOfLinks">The number of links.</param>
/// <param name="linkDensity">The link density.</param>
/// <param name="attachRopeJoint">Creates a rope joint between start and end. This enforces the length of the rope. Said in another way: it makes the rope less bouncy.</param>
/// <returns></returns>
public static Path CreateChain(World world, Vector2 start, Vector2 end, float linkWidth, float linkHeight, int numberOfLinks, float linkDensity, bool attachRopeJoint)
{
Debug.Assert(numberOfLinks >= 2);
//Chain start / end
Path path = new Path();
path.Add(start);
path.Add(end);
//A single chainlink
PolygonShape shape = new PolygonShape(PolygonTools.CreateRectangle(linkWidth, linkHeight), linkDensity);
//Use PathManager to create all the chainlinks based on the chainlink created before.
List <Body> chainLinks = PathManager.EvenlyDistributeShapesAlongPath(world, path, shape, BodyType.Dynamic, numberOfLinks);
//TODO
//if (fixStart)
//{
// //Fix the first chainlink to the world
// JointFactory.CreateFixedRevoluteJoint(world, chainLinks[0], new Vector2(0, -(linkHeight / 2)),
// chainLinks[0].Position);
//}
//if (fixEnd)
//{
// //Fix the last chainlink to the world
// JointFactory.CreateFixedRevoluteJoint(world, chainLinks[chainLinks.Count - 1],
// new Vector2(0, (linkHeight / 2)),
// chainLinks[chainLinks.Count - 1].Position);
//}
//Attach all the chainlinks together with a revolute joint
PathManager.AttachBodiesWithRevoluteJoint(world, chainLinks, new Vector2(0, -linkHeight), new Vector2(0, linkHeight), false, false);
if (attachRopeJoint)
{
JointFactory.CreateRopeJoint(world, chainLinks[0], chainLinks[chainLinks.Count - 1], Vector2.Zero, Vector2.Zero);
}
return(path);
}
protected override void SetupPhysics(World world)
{
#if EDITOR
#else
this._pathBodies = new List <Body>();
float width = ConvertUnits.ToSimUnits(this._texture.Width * 0.5f);
float height = ConvertUnits.ToSimUnits(this._texture.Height * 0.5f);
Vector2 startPos = ConvertUnits.ToSimUnits(this._position);
Vector2 endPos = ConvertUnits.ToSimUnits(this._endPosition);
Path _ropePath = new Path();
_ropePath.Add(startPos);
_ropePath.Add(endPos);
PolygonShape rotationPointShape = new PolygonShape(PolygonTools.CreateCircle(height, 8), 25);
PolygonShape shape = new PolygonShape(PolygonTools.CreateRectangle(width, height), ConvertUnits.ToSimUnits(1.0f));
PolygonShape sensorShape = new PolygonShape(PolygonTools.CreateCircle(height * 1.5f, 6), 1.0f);
List <Shape> shapes = new List <Shape>(2);
shapes.Add(new PolygonShape(PolygonTools.CreateRectangle(0.5f, 0.5f, new Vector2(-0.1f, 0f), 0f), 1f));
shapes.Add(new CircleShape(0.5f, 1f));
_pathBodies = PathManager.EvenlyDistributeShapesAlongPath(world, _ropePath, shapes,
BodyType.Dynamic, _chainCount);
JointFactory.CreateFixedRevoluteJoint(world, _pathBodies[0], Vector2.Zero, startPos);
PathManager.AttachBodiesWithRevoluteJoint(world, _pathBodies, new Vector2(0f, -0.5f), new Vector2(0f, 0.5f),
false, true);
for (int i = 1; i < _pathBodies.Count; i++)
{
_pathBodies[i].FixtureList[0].CollidesWith = Category.All & ~Category.Cat10 & ~Category.Cat12;
_pathBodies[i].FixtureList[1].CollidesWith = Category.All & ~Category.Cat10 & ~Category.Cat12;
Fixture fix = FixtureFactory.AttachCircle(height * 2, 0.0f, _pathBodies[i]);
fix.IsSensor = true;
fix.OnCollision += Body_OnCollision;
fix.OnSeparation += Body_OnSeparation;
}
//Body prevBody = new Body(world); ;
//for (int i = 0; i < _chainCount; ++i)
//{
// Body body = new Body(world);
// body.BodyType = BodyType.Dynamic;
// body.Position = startPos + new Vector2(0, height * i);
// if (i == 0)
// {
// Fixture fixture = body.CreateFixture(rotationPointShape);
// fixture.Friction = 0.2f;
// body.AngularDamping = 0.4f;
// FixedRevoluteJoint fixedJoint = JointFactory.CreateFixedRevoluteJoint(world, body, Vector2.Zero, startPos);
// }
// else
// {
// Fixture fixture = body.CreateFixture(shape);
// fixture.Friction = 0.2f;
// Fixture sensorFix = FixtureFactory.AttachCircle(height * 2, 0.0f, body);
// sensorFix.IsSensor = true;
// fixture.CollidesWith = Category.All & ~Category.Cat10 & ~Category.Cat12;
// RopeJoint rj = new RopeJoint(prevBody, body, new Vector2(0.0f, height), new Vector2(0.0f, -height * 0.5f));
// rj.CollideConnected = false;
// world.AddJoint(rj);
// body.FixtureList[1].Body.OnCollision += Body_OnCollision;
// body.FixtureList[1].Body.OnSeparation += Body_OnSeparation;
// }
// prevBody = body;
// _pathBodies.Add(body);
//}
#endif
}
public PathEntity GetPathEntity(Vector2 scale)
{
float scaleD = (scale.X + scale.Y) / 2;
PathEntity pathEntity = new PathEntity();
List <Shape> shapes = new List <Shape>();
Body b = Body.GetPhysicsBody(scale);
foreach (var fix in b.FixtureList)
{
shapes.Add(fix.Shape);
}
Path p = new Path();
foreach (Vector2 node in Path)
{
p.Add(UnitsConverter.ToSimUnits(node) * scale);
}
pathEntity.Bodies = PathManager.EvenlyDistributeShapesAlongPath(
Platform.Instance.PhysicsWorld,
p,
shapes,
Body.Static ? BodyType.Static : BodyType.Dynamic,
BodyCount + 1
);
foreach (var link in pathEntity.Bodies)
{
link.CollisionGroup = b.FixtureList[0].CollisionGroup;
}
Platform.Instance.PhysicsWorld.RemoveBody(b);
switch (JointType)
{
case JointType.Revolute:
pathEntity.Joints = new List <Joint>(PathManager.AttachBodiesWithRevoluteJoint(
Platform.Instance.PhysicsWorld,
pathEntity.Bodies,
UnitsConverter.ToSimUnits(Anchor1) * scale,
UnitsConverter.ToSimUnits(Anchor2) * scale,
ConnectFirstAndLast,
CollideConnected
));
return(pathEntity);
case JointType.Slider:
pathEntity.Joints = new List <Joint>(PathManager.AttachBodiesWithSliderJoint(
Platform.Instance.PhysicsWorld,
pathEntity.Bodies,
UnitsConverter.ToSimUnits(Anchor1) * scale,
UnitsConverter.ToSimUnits(Anchor2) * scale,
ConnectFirstAndLast,
CollideConnected,
UnitsConverter.ToSimUnits(MaxLength) * scaleD,
UnitsConverter.ToSimUnits(MinLength) * scaleD
));
return(pathEntity);
}
return(new PathEntity());
}
public override void Construct()
{
Demo.Window.Title = "Path Demo";
Demo.Camera3D.Position = new Vector3(16.36052f, 7.006462f, 1.119595f);
Demo.Camera3D.Target = new Vector3(15.43861f, 6.659885f, 0.9464932f);
HiddenBody = Demo.World3D.World2D.CreateBody(Vector2.Zero);
Path bridgePath = new Path();
bridgePath.Add(new Vector2(-17, 5));
bridgePath.Add(new Vector2(17, 5));
bridgePath.Closed = false;
Model plankModel = Demo.Content.Load <Model>("Models/bridge");
PolygonShape shape = new PolygonShape(PolygonTools.CreateRectangle(0.125f, 0.5f), 20f);
List <Body> bodies =
PathManager.EvenlyDistributeShapesAlongPath(Demo.World3D.World2D,
bridgePath, shape,
BodyType.Dynamic,
34);
JointFactory.CreateRevoluteJoint(
Demo.World3D.World2D,
HiddenBody,
bodies[0],
new Vector2(0f, 0.5f));
JointFactory.CreateRevoluteJoint(
Demo.World3D.World2D,
HiddenBody,
bodies[bodies.Count - 1],
new Vector2(0f, -0.5f));
PathManager.AttachBodiesWithRevoluteJoint(
Demo.World3D.World2D,
bodies,
new Vector2(0f, 0.5f),
new Vector2(0f, -0.5f),
false,
true);
foreach (Body b in bodies)
{
Demo.World3D.AddBody3D(new Body3D(plankModel, b));
}
Body body = new Body();
body.CreateCircle(1f, 1f);
body.SetRestitution(0.7f);
Body3D body3D =
Body3DFactory.CreateBody3D(
Demo.Content.Load <Model>("Models/Primitives/goldBall"),
Demo.World3D.World2D,
body,
new Vector2(8f, 8f));
Demo.World3D.AddBody3D(body3D);
body.ApplyAngularImpulse(5f);
}