public void Create(BroadPhase broadPhase, Body body, XForm xf, FixtureDef def)
{
UserData = def.UserData;
Friction = def.Friction;
Restitution = def.Restitution;
Density = def.Density;
_body = body;
_next = null;
Filter = def.Filter;
_isSensor = def.IsSensor;
_type = def.Type;
// Allocate and initialize the child shape.
switch (_type)
{
case ShapeType.CircleShape:
{
CircleShape circle = new CircleShape();
CircleDef circleDef = (CircleDef)def;
circle._position = circleDef.LocalPosition;
circle._radius = circleDef.Radius;
_shape = circle;
}
break;
case ShapeType.PolygonShape:
{
PolygonShape polygon = new PolygonShape();
PolygonDef polygonDef = (PolygonDef)def;
polygon.Set(polygonDef.Vertices, polygonDef.VertexCount);
_shape = polygon;
}
break;
case ShapeType.EdgeShape:
{
EdgeShape edge = new EdgeShape();
EdgeDef edgeDef = (EdgeDef)def;
edge.Set(edgeDef.Vertex1, edgeDef.Vertex2);
_shape = edge;
}
break;
default:
Box2DXDebug.Assert(false);
break;
}
// Create proxy in the broad-phase.
AABB aabb;
_shape.ComputeAABB(out aabb, xf);
bool inRange = broadPhase.InRange(aabb);
// You are creating a shape outside the world box.
Box2DXDebug.Assert(inRange);
if (inRange)
{
_proxyId = broadPhase.CreateProxy(aabb, this);
}
else
{
_proxyId = PairManager.NullProxy;
}
}
public override void Keyboard(System.Windows.Forms.Keys key)
{
switch (key)
{
case System.Windows.Forms.Keys.B:
if (_bullet != null)
{
_world.DestroyBody(_bullet);
_bullet = null;
}
{
CircleDef sd = new CircleDef();
sd.Density = 20.0f;
sd.Radius = 0.25f;
sd.Restitution = 0.05f;
BodyDef bd = new BodyDef();
bd.IsBullet = true;
bd.Position.Set(-31.0f, 5.0f);
_bullet = _world.CreateBody(bd);
_bullet.CreateFixture(sd);
_bullet.SetMassFromShapes();
_bullet.SetLinearVelocity(new Vec2(400.0f, 0.0f));
}
break;
}
}