public void SetPhysicsCanvas(PhysicsCanvas cnvGame)
{
_physicsCanvas = cnvGame;
}
/// <summary>
/// Gets a list of all joint-related sprites, given a sprite.
/// </summary>
public static void GetAllSpritesRelatedByJoints(PhysicsCanvas cnvGame, PhysicsSprite spr, List<PhysicsSprite> sprJoined)
{
// add in the given sprite
if (sprJoined.IndexOf(spr) < 0)
sprJoined.Add(spr);
foreach (Joint joint in cnvGame.Simulator.JointList)
{
if (joint.BodyA == spr.BodyObject || joint.BodyB == spr.BodyObject)
{
var spritesJoined = from s in cnvGame.PhysicsObjects.Values
where s.BodyObject == joint.BodyA || s.BodyObject == joint.BodyB
&& (joint.BodyA.Enabled == true && joint.BodyB.Enabled == true)
select s;
foreach (PhysicsSprite sprFound in spritesJoined)
{
if (sprJoined.IndexOf(sprFound) < 0)
{
GetAllSpritesRelatedByJoints(cnvGame, sprFound, sprJoined);
}
}
}
}
}
void PhysicsSprite_Loaded(object sender, RoutedEventArgs e)
{
// set up the transform for position and rotation
if (this.RenderTransform != null && this.RenderTransform is SysWinMedia.TransformGroup)
{
foreach (SysWinMedia.Transform trn in (this.RenderTransform as SysWinMedia.TransformGroup).Children)
{
if (trn is SysWinMedia.CompositeTransform)
Transform = trn as SysWinMedia.CompositeTransform;
}
}
else
if (this.RenderTransform is SysWinMedia.CompositeTransform)
{
Transform = this.RenderTransform as SysWinMedia.CompositeTransform;
}
else
{
this.RenderTransform = new SysWinMedia.CompositeTransform();
Transform = this.RenderTransform as SysWinMedia.CompositeTransform;
}
if (_physicsCanvas == null)
{
_physicsCanvas = PhysicsUtilities.FindPhysicsCanvas(this);
if (_physicsCanvas == null)
{
System.Diagnostics.Debug.WriteLine("PhysicsCanvas was not found - sprite will not be loaded");
return;
}
}
if (InitializePhysics)
{
List<FarseerPhysics.Collision.Shapes.Shape> shapes;
// DEMO: (1) Determine the Shape (Outline) of the element on the screen
try
{
shapes = PhysicsCanvas.BoundaryHelper.CreateShapesFromElement(_physicsCanvas.Simulator, this, _shapeType);
}
catch (Exception ex)
{
shapes = PhysicsCanvas.BoundaryHelper.CreateShapesFromElement(_physicsCanvas.Simulator, this, ShapeTypes.Rectangle);
}
// DEMO: (3) Create the Body based on shape (outline)
BodyObject = BodyFactory.CreateBody(_physicsCanvas.Simulator);
BodyObject.BodyType = BodyType.Dynamic;
foreach (FarseerPhysics.Collision.Shapes.Shape shape in shapes)
{
BodyObject.CreateFixture(shape);
}
foreach (Fixture f in BodyObject.FixtureList)
{
if (_collisionEventDisable)
{
System.Diagnostics.Debug.WriteLine(this.GetValue(Canvas.NameProperty) + " WILL NOT fire collision events.");
CollisionEventDisable = _collisionEventDisable;
}
}
BodyObject.Awake = true;
// did this item have a rotation if so then we need to add it back into new sprite?
double angle = 0;
if (this.RenderTransform is SysWinMedia.CompositeTransform)
{
angle = (this.RenderTransform as SysWinMedia.CompositeTransform).Rotation;
(this.RenderTransform as SysWinMedia.CompositeTransform).Rotation = 0;
this.RenderTransformOrigin = new sw.Point(0, 0);
}
if (angle != 0)
{
float radAngle = (float)(Math.PI * angle / 180.0);
BodyObject.Rotation = radAngle;
_rotation = radAngle;
}
// refresh static now that body is created
IsStatic = _isStatic;
FrictionCoefficient = _frictionCoefficient;
CollisionGroup = _collisionGroup;
CausesCollisions = _causesCollisions;
DebugMode = _debugMode;
RestitutionCoefficient = _restitutionCoefficient;
CollisionEventDisable = _collisionEventDisable;
InternalName = this.Name;
DebugMode = _physicsCanvas.DebugMode;
IsBullet = _isBullet;
IsEnabled = _isEnabled;
IsBodyEnabled = _isBodyEnabled;
Rotation = PhysicsUtilities.RadiansToDecimalDegrees(_rotation);
AngularDamping = _angularDamping;
LinearDamping = _linearDamping;
if (_mass == -1)
_mass = BodyObject.Mass;
else
Mass = _mass;
IsSensor = _isSensor;
// get the overall dimensions
double width, height;
width = this.ActualWidth;
height = this.ActualHeight;
// adjust the offset position in the world
xna.Vector2 offsetPosition = PhysicsUtilities.GetOffsetPositionInScreen(this);
// adjust position to take into consideration origin at middle
offsetPosition.X = (offsetPosition.X + ((float)getWidth / 2));
offsetPosition.Y = (offsetPosition.Y + ((float)getHeight / 2));
if (_position != Vector2.Zero)
Position = _position;
else
BodyObject.Position = PhysicsCanvas.BoundaryHelper.ScreenToWorld(offsetPosition);
Update();
}
// add this sprite into the simulation
if (_physicsCanvas != null)
{
_physicsCanvas.AddPhysicsSprite(this, InitializePhysics);
}
this.Loaded -= PhysicsSprite_Loaded;
IsLoaded = true;
//System.Diagnostics.Debug.WriteLine("added sprite {0} in {1} ms. with mass={2}", this.Name, (DateTime.Now - _dtCtor).TotalMilliseconds, _mass);
}
public static List<Joint> FindJoint(PhysicsCanvas cnvGame, string body1, string body2)
{
List<Joint> joint = new List<Joint>();
foreach (Joint x in cnvGame.Simulator.JointList)
{
if ((x.BodyA == cnvGame.PhysicsObjects[body1].BodyObject && x.BodyB == cnvGame.PhysicsObjects[body2].BodyObject)
|| (x.BodyB == cnvGame.PhysicsObjects[body1].BodyObject && x.BodyA == cnvGame.PhysicsObjects[body2].BodyObject))
{
joint.Add(x);
}
}
return joint;
}
