internal override void UpdateFixture(bool updateShape = false)
{
// Loop shapes aren't allowed on nonstatic bodies.
if (this.Parent != null && this.Parent.BodyType != BodyType.Static)
{
this.DestroyFixture(this.Parent.PhysicsBody, false);
return;
}
base.UpdateFixture(updateShape);
if (this.fixture == null)
{
return;
}
if (this.Parent == null)
{
return;
}
float scale = 1.0f;
if (this.Parent.GameObj != null && this.Parent.GameObj.Transform != null)
{
scale = this.Parent.GameObj.Transform.Scale;
}
LoopShape poly = this.fixture.Shape as LoopShape;
poly.Vertices = this.CreateVertices(scale);
}
public void DrawShape(Fixture fixture, Transform xf, Color color)
{
switch (fixture.ShapeType)
{
case ShapeType.Circle:
{
CircleShape circle = (CircleShape)fixture.Shape;
Vector2 center = MathUtils.Multiply(ref xf, circle.Position);
float radius = circle.Radius;
Vector2 axis = xf.R.Col1;
DrawSolidCircle(center, radius, axis, color);
//DrawCircle(center, radius, Color.White);
}
break;
case ShapeType.Polygon:
{
PolygonShape poly = (PolygonShape)fixture.Shape;
int vertexCount = poly.Vertices.Count;
Debug.Assert(vertexCount <= Settings.MaxPolygonVertices);
for (int i = 0; i < vertexCount; ++i)
{
_tempVertices[i] = MathUtils.Multiply(ref xf, poly.Vertices[i]);
}
DrawSolidPolygon(_tempVertices, vertexCount, color);
}
break;
case ShapeType.Edge:
{
EdgeShape edge = (EdgeShape)fixture.Shape;
Vector2 v1 = MathUtils.Multiply(ref xf, edge.Vertex1);
Vector2 v2 = MathUtils.Multiply(ref xf, edge.Vertex2);
DrawSegment(v1, v2, color);
}
break;
case ShapeType.Loop:
{
LoopShape loop = (LoopShape)fixture.Shape;
int count = loop.Vertices.Count;
Vector2 v1 = MathUtils.Multiply(ref xf, loop.Vertices[count - 1]);
DrawCircle(v1, 0.05f, color);
for (int i = 0; i < count; ++i)
{
Vector2 v2 = MathUtils.Multiply(ref xf, loop.Vertices[i]);
DrawSegment(v1, v2, color);
v1 = v2;
}
}
break;
}
}
/// <summary>
/// Initialize the proxy using the given shape. The shape
/// must remain in scope while the proxy is in use.
/// </summary>
/// <param name="shape">The shape.</param>
/// <param name="index">The index.</param>
public void Set(Shape shape, int index)
{
switch (shape.ShapeType)
{
case ShapeType.Circle:
{
CircleShape circle = (CircleShape)shape;
Vertices = new Vertices(1);
Vertices.Add(circle.Position);
Radius = circle.Radius;
}
break;
case ShapeType.Polygon:
{
PolygonShape polygon = (PolygonShape)shape;
Vertices = polygon.Vertices;
Radius = polygon.Radius;
}
break;
case ShapeType.Loop:
{
LoopShape loop = (LoopShape)shape;
Debug.Assert(0 <= index && index < loop.Vertices.Count);
Buffer[0] = loop.Vertices[index];
if (index + 1 < loop.Vertices.Count)
{
Buffer[1] = loop.Vertices[index + 1];
}
else
{
Buffer[1] = loop.Vertices[0];
}
Vertices = new Vertices(2);
Vertices.Add(Buffer[0]);
Vertices.Add(Buffer[1]);
Radius = loop.Radius;
}
break;
case ShapeType.Edge:
{
EdgeShape edge = (EdgeShape)shape;
Vertices = new Vertices(2);
Vertices.Add(edge.Vertex1);
Vertices.Add(edge.Vertex2);
Radius = edge.Radius;
}
break;
default:
Debug.Assert(false);
break;
}
}
void DrawShape(Fixture fixture, Box2D.Transform xf, Color color)
{
switch (fixture.ShapeType)
{
case ShapeType.Circle:
{
CircleShape circle = (CircleShape)fixture.GetShape();
Vector2 center = MathUtils.Multiply(ref xf, circle._p);
float radius = circle._radius;
Vector2 axis = xf.R.col1;
drawSolidCircle(center, radius, axis, color);
}
break;
case ShapeType.Polygon:
{
PolygonShape poly = (PolygonShape)fixture.GetShape();
int vertexCount = poly._vertexCount;
FixedArray8 <Vector2> vertices = new FixedArray8 <Vector2>();
for (int i = 0; i < vertexCount; ++i)
{
vertices[i] = MathUtils.Multiply(ref xf, poly._vertices[i]);
}
drawSolidPolygon(ref vertices, vertexCount, color, true);
}
break;
case ShapeType.Edge:
{
EdgeShape edge = (EdgeShape)fixture.GetShape();
Vector2 v1 = MathUtils.Multiply(ref xf, edge._vertex1);
Vector2 v2 = MathUtils.Multiply(ref xf, edge._vertex2);
drawSegment(v1, v2, color);
}
break;
case ShapeType.Loop:
{
LoopShape loop = (LoopShape)fixture.GetShape();
int count = loop._count;
Vector2 v1 = MathUtils.Multiply(ref xf, loop._vertices[count - 1]);
for (int i = 0; i < count; ++i)
{
Vector2 v2 = MathUtils.Multiply(ref xf, loop._vertices[i]);
drawSegment(v1, v2, color);
v1 = v2;
}
}
break;
}
}
private static JObject SerializeLoopShape(LoopShape shape)
{
var jsonLoopShape = new JObject();
jsonLoopShape.Add(new JProperty("vertices", ToJsonObject(shape.Vertices)));
jsonLoopShape.Add(new JProperty("hasNextVertex", true));
jsonLoopShape.Add(new JProperty("hasPrevVertex", true));
jsonLoopShape.Add(new JProperty("nextVertex", ToJsonObject(shape.Vertices[1])));
jsonLoopShape.Add(new JProperty("prevVertex", ToJsonObject(shape.Vertices[shape.Vertices.Count - 2])));
return(jsonLoopShape);
}
/// <summary>
/// Initialize the proxy using the given shape. The shape
/// must remain in scope while the proxy is in use.
/// </summary>
/// <param name="shape">The shape.</param>
/// <param name="index">The index.</param>
public void Set(Shape shape, int index)
{
switch (shape.ShapeType)
{
case ShapeType.Circle:
{
CircleShape circle = (CircleShape)shape;
Vertices.Clear();
Vertices.Add(circle.Position);
Radius = circle.Radius;
}
break;
case ShapeType.Polygon:
{
PolygonShape polygon = (PolygonShape)shape;
Vertices.Clear();
for (int i = 0; i < polygon.Vertices.Count; i++)
{
Vertices.Add(polygon.Vertices[i]);
}
Radius = polygon.Radius;
}
break;
case ShapeType.Loop:
{
LoopShape loop = (LoopShape)shape;
Debug.Assert(0 <= index && index < loop.Vertices.Count);
Vertices.Clear();
Vertices.Add(loop.Vertices[index]);
Vertices.Add(index + 1 < loop.Vertices.Count ? loop.Vertices[index + 1] : loop.Vertices[0]);
Radius = loop.Radius;
}
break;
case ShapeType.Edge:
{
EdgeShape edge = (EdgeShape)shape;
Vertices.Clear();
Vertices.Add(edge.Vertex1);
Vertices.Add(edge.Vertex2);
Radius = edge.Radius;
}
break;
default:
Debug.Assert(false);
break;
}
}
/// <summary>
/// Evaluate this contact with your own manifold and transforms.
/// </summary>
/// <param name="manifold">The manifold.</param>
/// <param name="transformA">The first transform.</param>
/// <param name="transformB">The second transform.</param>
private void Evaluate(ref Manifold manifold, ref Transform transformA, ref Transform transformB)
{
switch (_type)
{
case ContactType.Polygon:
Collision.Collision.CollidePolygons(ref manifold,
(PolygonShape)FixtureA.Shape, ref transformA,
(PolygonShape)FixtureB.Shape, ref transformB);
break;
case ContactType.PolygonAndCircle:
Collision.Collision.CollidePolygonAndCircle(ref manifold,
(PolygonShape)FixtureA.Shape, ref transformA,
(CircleShape)FixtureB.Shape, ref transformB);
break;
case ContactType.EdgeAndCircle:
Collision.Collision.CollideEdgeAndCircle(ref manifold,
(EdgeShape)FixtureA.Shape, ref transformA,
(CircleShape)FixtureB.Shape, ref transformB);
break;
case ContactType.EdgeAndPolygon:
Collision.Collision.CollideEdgeAndPolygon(ref manifold,
(EdgeShape)FixtureA.Shape, ref transformA,
(PolygonShape)FixtureB.Shape, ref transformB);
break;
case ContactType.LoopAndCircle:
LoopShape loop = (LoopShape)FixtureA.Shape;
loop.GetChildEdge(ref _edge, ChildIndexA);
Collision.Collision.CollideEdgeAndCircle(ref manifold, _edge, ref transformA,
(CircleShape)FixtureB.Shape, ref transformB);
break;
case ContactType.LoopAndPolygon:
LoopShape loop2 = (LoopShape)FixtureA.Shape;
loop2.GetChildEdge(ref _edge, ChildIndexA);
Collision.Collision.CollideEdgeAndPolygon(ref manifold, _edge, ref transformA,
(PolygonShape)FixtureB.Shape, ref transformB);
break;
case ContactType.Circle:
Collision.Collision.CollideCircles(ref manifold,
(CircleShape)FixtureA.Shape, ref transformA,
(CircleShape)FixtureB.Shape, ref transformB);
break;
}
}
//Contributed by Matthew Bettcher
/// <summary>
/// Convert a path into a set of edges and attaches them to the specified body.
/// Note: use only for static edges.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="body">The body.</param>
/// <param name="subdivisions">The subdivisions.</param>
public static void ConvertPathToEdges(Path path, Body body, int subdivisions)
{
Vertices verts = path.GetVertices(subdivisions);
if (path.Closed)
{
LoopShape loop = new LoopShape(verts);
body.CreateFixture(loop);
}
else
{
for (int i = 1; i < verts.Count; i++)
{
body.CreateFixture(new EdgeShape(verts[i], verts[i - 1]));
}
}
}
public void DrawLineShape(Shape shape, Color color)
{
if (!_hasBegun)
{
throw new InvalidOperationException("Begin must be called before DrawLineShape can be called.");
}
if (shape.ShapeType != ShapeType.Edge &&
shape.ShapeType != ShapeType.Loop)
{
throw new NotSupportedException("The specified shapeType is not supported by LineBatch.");
}
if (shape.ShapeType == ShapeType.Edge)
{
if (_lineVertsCount >= _lineVertices.Length)
{
Flush();
}
EdgeShape edge = (EdgeShape)shape;
_lineVertices[_lineVertsCount].Position = new Vector3(edge.Vertex1, 0f);
_lineVertices[_lineVertsCount + 1].Position = new Vector3(edge.Vertex2, 0f);
_lineVertices[_lineVertsCount].Color = _lineVertices[_lineVertsCount + 1].Color = color;
_lineVertsCount += 2;
}
else if (shape.ShapeType == ShapeType.Loop)
{
LoopShape loop = (LoopShape)shape;
for (int i = 0; i < loop.Vertices.Count; ++i)
{
if (_lineVertsCount >= _lineVertices.Length)
{
Flush();
}
_lineVertices[_lineVertsCount].Position = new Vector3(loop.Vertices[i], 0f);
_lineVertices[_lineVertsCount + 1].Position = new Vector3(loop.Vertices.NextVertex(i), 0f);
_lineVertices[_lineVertsCount].Color = _lineVertices[_lineVertsCount + 1].Color = color;
_lineVertsCount += 2;
}
}
}
public static Fixture AttachLoopShape(Vertices vertices, Body body, object userData)
{
LoopShape shape = new LoopShape(vertices);
return(body.CreateFixture(shape, userData));
}
public static Fixture CreateLoopShape(Vertices vertices, float density, Body body)
{
LoopShape shape = new LoopShape(vertices, density);
return(body.CreateFixture(shape));
}
private PinballTest()
{
// Ground body
Body ground;
{
ground = BodyFactory.CreateBody(World);
Vertices vertices = new Vertices(5);
vertices.Add(new Vector2(0.0f, -2.0f));
vertices.Add(new Vector2(8.0f, 6.0f));
vertices.Add(new Vector2(8.0f, 20.0f));
vertices.Add(new Vector2(-8.0f, 20.0f));
vertices.Add(new Vector2(-8.0f, 6.0f));
LoopShape loop = new LoopShape(vertices);
ground.CreateFixture(loop);
}
// Flippers
{
Vector2 p1 = new Vector2(-2.0f, 0f);
Vector2 p2 = new Vector2(2.0f, 0f);
Body leftFlipper = BodyFactory.CreateBody(World, p1);
leftFlipper.BodyType = BodyType.Dynamic;
Body rightFlipper = BodyFactory.CreateBody(World, p2);
rightFlipper.BodyType = BodyType.Dynamic;
PolygonShape box = new PolygonShape(1);
box.SetAsBox(1.75f, 0.1f);
leftFlipper.CreateFixture(box);
rightFlipper.CreateFixture(box);
_leftJoint = new RevoluteJoint(ground, leftFlipper, p1, Vector2.Zero);
_leftJoint.MaxMotorTorque = 1000.0f;
_leftJoint.LimitEnabled = true;
_leftJoint.MotorEnabled = true;
_leftJoint.MotorSpeed = 0.0f;
_leftJoint.LowerLimit = -30.0f * Settings.Pi / 180.0f;
_leftJoint.UpperLimit = 5.0f * Settings.Pi / 180.0f;
World.AddJoint(_leftJoint);
_rightJoint = new RevoluteJoint(ground, rightFlipper, p2, Vector2.Zero);
_rightJoint.MaxMotorTorque = 1000.0f;
_rightJoint.LimitEnabled = true;
_rightJoint.MotorEnabled = true;
_rightJoint.MotorSpeed = 0.0f;
_rightJoint.LowerLimit = -5.0f * Settings.Pi / 180.0f;
_rightJoint.UpperLimit = 30.0f * Settings.Pi / 180.0f;
World.AddJoint(_rightJoint);
}
// Circle character
{
_ball = BodyFactory.CreateBody(World, new Vector2(1.0f, 15.0f));
_ball.BodyType = BodyType.Dynamic;
_ball.IsBullet = true;
_ball.CreateFixture(new CircleShape(0.2f, 1.0f));
}
}
public static Fixture CreateLoopShape(Vertices vertices, float density, Body body, Object userData)
{
LoopShape shape = new LoopShape(vertices, density);
return(body.CreateFixture(shape, userData));
}
private CharacterCollisionTest()
{
//Ground body
Body ground = BodyFactory.CreateEdge(World, new Vector2(-40.0f, 0.0f), new Vector2(40.0f, 0.0f));
// Collinear edges
EdgeShape shape = new EdgeShape(new Vector2(-8.0f, 1.0f), new Vector2(-6.0f, 1.0f));
ground.CreateFixture(shape);
shape = new EdgeShape(new Vector2(-6.0f, 1.0f), new Vector2(-4.0f, 1.0f));
ground.CreateFixture(shape);
shape = new EdgeShape(new Vector2(-4.0f, 1.0f), new Vector2(-2.0f, 1.0f));
ground.CreateFixture(shape);
// Square tiles
PolygonShape tile = new PolygonShape(1);
tile.SetAsBox(1.0f, 1.0f, new Vector2(4.0f, 3.0f), 0.0f);
ground.CreateFixture(tile);
tile.SetAsBox(1.0f, 1.0f, new Vector2(6.0f, 3.0f), 0.0f);
ground.CreateFixture(tile);
tile.SetAsBox(1.0f, 1.0f, new Vector2(8.0f, 3.0f), 0.0f);
ground.CreateFixture(tile);
// Square made from an edge loop.
Vertices vertices = new Vertices(4);
vertices.Add(new Vector2(-1.0f, 3.0f));
vertices.Add(new Vector2(1.0f, 3.0f));
vertices.Add(new Vector2(1.0f, 5.0f));
vertices.Add(new Vector2(-1.0f, 5.0f));
LoopShape loopShape = new LoopShape(vertices);
ground.CreateFixture(loopShape);
// Edge loop.
vertices = new Vertices(10);
vertices.Add(new Vector2(0.0f, 0.0f));
vertices.Add(new Vector2(6.0f, 0.0f));
vertices.Add(new Vector2(6.0f, 2.0f));
vertices.Add(new Vector2(4.0f, 1.0f));
vertices.Add(new Vector2(2.0f, 2.0f));
vertices.Add(new Vector2(-2.0f, 2.0f));
vertices.Add(new Vector2(-4.0f, 3.0f));
vertices.Add(new Vector2(-6.0f, 2.0f));
vertices.Add(new Vector2(-6.0f, 0.0f));
BodyFactory.CreateLoopShape(World, vertices, new Vector2(-10, 4));
// Square character
Body squareCharacter = BodyFactory.CreateRectangle(World, 1, 1, 20);
squareCharacter.Position = new Vector2(-3.0f, 5.0f);
squareCharacter.BodyType = BodyType.Dynamic;
squareCharacter.FixedRotation = true;
squareCharacter.SleepingAllowed = false;
squareCharacter.OnCollision += CharacterOnCollision;
squareCharacter.OnSeparation += CharacterOnSeparation;
// Square character 2
Body squareCharacter2 = BodyFactory.CreateRectangle(World, 0.5f, 0.5f, 20);
squareCharacter2.Position = new Vector2(-5.0f, 5.0f);
squareCharacter2.BodyType = BodyType.Dynamic;
squareCharacter2.FixedRotation = true;
squareCharacter2.SleepingAllowed = false;
// Hexagon character
float angle = 0.0f;
const float delta = Settings.Pi / 3.0f;
vertices = new Vertices(6);
for (int i = 0; i < 6; ++i)
{
vertices.Add(new Vector2(0.5f * (float)Math.Cos(angle), 0.5f * (float)Math.Sin(angle)));
angle += delta;
}
Body hexCharacter = BodyFactory.CreatePolygon(World, vertices, 20);
hexCharacter.Position = new Vector2(-5.0f, 8.0f);
hexCharacter.BodyType = BodyType.Dynamic;
hexCharacter.FixedRotation = true;
hexCharacter.SleepingAllowed = false;
// Circle character
Body circleCharacter = BodyFactory.CreateCircle(World, 0.5f, 20);
circleCharacter.Position = new Vector2(3.0f, 5.0f);
circleCharacter.BodyType = BodyType.Dynamic;
circleCharacter.FixedRotation = true;
circleCharacter.SleepingAllowed = false;
}
public CharacterCollision()
{
// Ground body
{
BodyDef bd = new BodyDef();
Body ground = _world.CreateBody(bd);
PolygonShape shape = new PolygonShape();
shape.SetAsEdge(new Vector2(-20.0, 0.0), new Vector2(20.0, 0.0));
ground.CreateFixture(shape, 0.0);
}
// Collinear edges
{
BodyDef bd = new BodyDef();
Body ground = _world.CreateBody(bd);
PolygonShape shape = new PolygonShape();
shape.SetAsEdge(new Vector2(-8.0f, 1.0f), new Vector2(-6.0f, 1.0f));
ground.CreateFixture(shape, 0.0f);
shape.SetAsEdge(new Vector2(-6.0f, 1.0f), new Vector2(-4.0f, 1.0f));
ground.CreateFixture(shape, 0.0f);
shape.SetAsEdge(new Vector2(-4.0f, 1.0f), new Vector2(-2.0f, 1.0f));
ground.CreateFixture(shape, 0.0f);
}
// Square tiles
{
BodyDef bd = new BodyDef();
Body ground = _world.CreateBody(bd);
PolygonShape shape = new PolygonShape();
shape.SetAsBox(1.0f, 1.0f, new Vector2(4.0f, 3.0f), 0.0f);
ground.CreateFixture(shape, 0.0f);
shape.SetAsBox(1.0f, 1.0f, new Vector2(6.0f, 3.0f), 0.0f);
ground.CreateFixture(shape, 0.0f);
shape.SetAsBox(1.0f, 1.0f, new Vector2(8.0f, 3.0f), 0.0f);
ground.CreateFixture(shape, 0.0f);
}
// Square made from edges notice how the edges are shrunk to account
// for the polygon radius. This makes it so the square character does
// not get snagged. However, ray casts can now go through the cracks.
for (int i = 0; i < 4; i++)
{
BodyDef bd = new BodyDef();
Body ground = _world.CreateBody(bd);
ground.SetTransform(new Vector2(-2f * i, 0), 0);
Vector2[] vs = new Vector2[4];
vs[0] = new Vector2(-1.0f, 3.0f);
vs[1] = new Vector2(1.0f, 3.0f);
vs[2] = new Vector2(1.0f, 5.0f);
vs[3] = new Vector2(-1.0f, 5.0f);
LoopShape shape = new LoopShape();
shape._count = 4;
shape._vertices = vs;
ground.CreateFixture(shape, 0.0f);
//PolygonShape shape = new PolygonShape();
//double d = 2.0f * Settings.b2_polygonRadius;
//shape.SetAsEdge(new Vector2(-1.0f + d, 3.0f), new Vector2(1.0f - d, 3.0f));
//ground.CreateFixture(shape, 0.0f);
//shape.SetAsEdge(new Vector2(1.0f, 3.0f + d), new Vector2(1.0f, 5.0f - d));
//ground.CreateFixture(shape, 0.0f);
//shape.SetAsEdge(new Vector2(1.0f - d, 5.0f), new Vector2(-1.0f + d, 5.0f));
//ground.CreateFixture(shape, 0.0f);
//shape.SetAsEdge(new Vector2(-1.0f, 5.0f - d), new Vector2(-1.0f, 3.0f + d));
//ground.CreateFixture(shape, 0.0f);
}
// Square character
{
BodyDef bd = new BodyDef();
bd.position = new Vector2(-3.0f, 5.0f);
bd.type = BodyType.Dynamic;
bd.fixedRotation = true;
bd.allowSleep = false;
Body body = _world.CreateBody(bd);
PolygonShape shape = new PolygonShape();
shape.SetAsBox(0.5, 0.5);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0;
body.CreateFixture(fd);
}
#if false
// Hexagon character
{
BodyDef bd = new BodyDef();
bd.position = new Vector2(-5.0f, 5.0f);
bd.type = BodyType.Dynamic;
bd.fixedRotation = true;
bd.allowSleep = false;
Body body = _world.CreateBody(bd);
double angle = 0.0f;
double delta = (double)Math.PI / 3.0f;
Vector2[] vertices = new Vector2[6];
for (int i = 0; i < 6; ++i)
{
vertices[i] = new Vector2(0.5f * (double)Math.Cos(angle), 0.5f * (double)Math.Sin(angle));
angle += delta;
}
PolygonShape shape = new PolygonShape();
shape.Set(vertices, 6);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
body.CreateFixture(fd);
}
// Circle character
{
BodyDef bd = new BodyDef();
bd.position = new Vector2(3.0f, 5.0f);
bd.type = BodyType.Dynamic;
bd.fixedRotation = true;
bd.allowSleep = false;
Body body = _world.CreateBody(bd);
CircleShape shape = new CircleShape();
shape._radius = 0.5f;
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
body.CreateFixture(fd);
}
#endif
}
private void ParseFixture(JObject jsonFixture, Body body)
{
Shape shape = null;
var circles = (JObject)jsonFixture["circle"];
var polygons = (JObject)jsonFixture["polygon"];
var chains = (JObject)jsonFixture["chain"];
if (circles != null)
{
var center = Vector2.Zero;
float radius = 0;
foreach (JProperty circleProperty in circles.Children())
{
switch (circleProperty.Name)
{
case "center":
center = ParseVector2(circleProperty);
break;
case "radius":
radius = HexToFloat(circleProperty.Value.ToString());
break;
}
}
shape = new CircleShape(radius, 1);
var circleShape = (CircleShape)shape;
circleShape.Position = center;
}
else if (polygons != null)
{
Vertices vertices = null;
foreach (var polygonProperty in polygons.Children().Cast <JProperty>().Where(polygonProperty => polygonProperty.Name == "vertices"))
{
vertices = new Vertices(ParseVector2Array(polygonProperty));
}
if (vertices != null)
{
shape = new PolygonShape(vertices, 1);
}
}
else if (chains != null)
{
//shape = new
Vertices vertices = null;
bool isLoopShape = false;
bool hasNextVertex;
bool hasPrevVertex;
Vector2 nextVertex = Vector2.Zero;
Vector2 prevVertex = Vector2.Zero;
foreach (JProperty chainProperty in chains.Children())
{
switch (chainProperty.Name)
{
case "vertices":
vertices = new Vertices(ParseVector2Array(chainProperty));
break;
case "hasNextVertex":
isLoopShape = true;
hasNextVertex = (bool)chainProperty.Value;
break;
case "hasPrevVertex":
hasPrevVertex = (bool)chainProperty.Value;
break;
case "nextVertex":
nextVertex = ParseVector2(chainProperty);
break;
case "prevVertex":
prevVertex = ParseVector2(chainProperty);
break;
default:
System.Diagnostics.Debug.WriteLine(chainProperty.Name + " not supported!");
break;
}
}
if (isLoopShape)
{
var lastvertexIndex = vertices.Count - 1;
if (vertices[0] == vertices[lastvertexIndex])
{
vertices.RemoveAt(lastvertexIndex);
}
shape = new LoopShape(vertices);
//var loopShape = (LoopShape) shape;
}
else
{
throw new NotImplementedException();
//shape = new EdgeShape(prevVertex, nextVertex);
//var edgeShape = (EdgeShape) shape;
}
}
var fixture = body.CreateFixture(shape);
foreach (JProperty fixtureProperty in jsonFixture.Children())
{
//Fixture properties
switch (fixtureProperty.Name)
{
case "name":
var value = fixtureProperty.Value.ToString();
_namedFixtures.Add(fixture, value);
break;
case "density":
shape.Density = HexToFloat(fixtureProperty.Value.ToString());
break;
case "friction":
fixture.Friction = HexToFloat(fixtureProperty.Value.ToString());
break;
case "restitution":
fixture.Restitution = HexToFloat(fixtureProperty.Value.ToString());
break;
case "sensor":
fixture.IsSensor = (bool)fixtureProperty.Value;
break;
case "circle":
case "polygon":
case "chain":
//case "filter-categoryBits":
//case "filter-maskBits":
//case "filter-groupIndex":
break; //ignore
default:
System.Diagnostics.Debug.WriteLine(fixtureProperty.Name + " not supported!");
break;
}
}
}
