/// <summary> /// Initializes a new instance of the <see cref="TouchablePanel"/> class. /// </summary> public TouchablePanel() { elementToBody = new Dictionary<FrameworkElement, Body>(); shouldCreateBody = new List<FrameworkElement>(); shouldRemoveBody = new List<FrameworkElement>(); contactJoints = new Dictionary<int, FixedHingeJoint>(); elementToScale = new Dictionary<FrameworkElement, ScaleState>(); ignorer = new ObjectIgnorer(); engine = new PhysicsEngine(); engine.BroadPhase = new SweepAndPruneDetector(); engine.Solver = new SequentialImpulsesSolver(); timer = new PhysicsTimer(PhysicsTimerCallback, 0.01); Loaded += TouchablePanel_Loaded; }
public static DisposeCallback CreateTank(DemoOpenInfo info, Vector2D position,List<Body> result) { Lifespan avatarLifespan = new Lifespan(); IShape shape = ShapeFactory.CreateSprite(Cache<SurfacePolygons>.GetItem("tank.png"), 4, 18, 2); ObjectIgnorer ignorer = new ObjectIgnorer(); Body tankBody = new Body(new PhysicsState(new ALVector2D(0, 0, 0)), shape, 300,//new MassInfo(40, Scalar.PositiveInfinity), new Coefficients(0, 1), avatarLifespan); result.Add(tankBody); tankBody.State.Position.Linear += position; tankBody.ApplyPosition(); tankBody.CollisionIgnorer = ignorer; BodyGraphic graphic = CreateGraphic(tankBody); graphic.ZOrder = 2; info.Scene.AddGraphic(graphic); Scalar wheelSize = 18; Scalar wheelSpacing = -9; Scalar lenghtPercent = .84f; Matrix2x3 ident = Matrix2x3.Identity; BoundingRectangle rect; shape.CalcBoundingRectangle(ref ident, out rect); Scalar y = (rect.Max.Y + 4); Body lastWheel = null; BoundingPolygon polygon = new BoundingPolygon(shape.Vertexes); Ray ray2 = new Ray(new Vector2D(rect.Max.X, y), -Vector2D.YAxis); Scalar y3 = y - polygon.Intersects(ray2); Vector2D avatarBarrelOffset = new Vector2D(rect.Max.X + 10, y3); CircleShape wheelShape = ShapeFactory.CreateColoredCircle(wheelSize, 30); Scalar force = 0; for (Scalar x = rect.Min.X + wheelSize; x < (rect.Max.X - wheelSize) * lenghtPercent; x += (wheelSize * 2 + wheelSpacing)) { Ray ray = new Ray(new Vector2D(x, y), -Vector2D.YAxis); Scalar y2 = y - polygon.Intersects(ray); Vector2D offset = new Vector2D(x, y2); Body wheel = new Body( new PhysicsState(new ALVector2D(0, offset + position)), wheelShape, 10, new Coefficients(0, 3),// coefficients.Duplicate(), avatarLifespan); result.Add(wheel); wheel.CollisionIgnorer = ignorer; wheel.AngularDamping = .9f; wheel.Updated += delegate(object sender, UpdatedEventArgs e) { wheel.State.ForceAccumulator.Angular += force; }; info.Scene.AddGraphic(CreateGraphic(wheel)); HingeJoint joint = new HingeJoint(tankBody, wheel, offset + position, avatarLifespan); joint.Softness = .1f; info.Scene.Engine.AddJoint(joint); if (lastWheel != null) { AngleJoint joint2 = new AngleJoint(lastWheel, wheel, avatarLifespan); info.Scene.Engine.AddJoint(joint2); } lastWheel = wheel; } CircleShape weaponShape = ShapeFactory.CreateColoredCircle(5, 8); //now begins the abuse of anominous delegates (BIG TIME) EventHandler<KeyboardEventArgs> keyDownHandler = delegate(object sender, KeyboardEventArgs e) { switch (e.Key) { case Key.LeftArrow: force = -1500000; break; case Key.RightArrow: force = 1500000; break; case Key.Space: Scalar velocity = 2000; Matrix2x3 toWorld = tankBody.Matrices.ToWorld; Matrix2x2 toWorldNormal = tankBody.Matrices.ToWorldNormal; // Matrix2D mat = avatarBodies[0].Matrices.ToWorld; Vector2D direction = toWorldNormal * Vector2D.XAxis; PhysicsState state = new PhysicsState(); state.Position.Linear = toWorld * (avatarBarrelOffset); state.Velocity.Linear = velocity * direction + tankBody.State.Velocity.Linear; Body weapon = new Body(state, weaponShape, 5, new Coefficients(1, 1), new Lifespan(10)); //weapon.CollisionIgnorer = tankBody.CollisionIgnorer; weapon.Collided += delegate(object sender2, CollisionEventArgs e2) { if (!weapon.Lifetime.IsExpired) { weapon.Lifetime.IsExpired = true; AddParticles(info, weapon.State.Position.Linear, weapon.State.Velocity.Linear * .5f, 50); } }; // weapon.Collided += weapon_Collided; tankBody.State.Velocity.Linear -= (velocity * weapon.Mass.Mass * tankBody.Mass.MassInv) * direction; info.Scene.AddGraphic(CreateGraphic(weapon)); break; } }; EventHandler<KeyboardEventArgs> keyUpHandler = delegate(object sender, KeyboardEventArgs e) { switch (e.Key) { case Key.LeftArrow: force = 0; break; case Key.RightArrow: force = 0; break; } }; Events.KeyboardDown += keyDownHandler; Events.KeyboardUp += keyUpHandler; return delegate() { Events.KeyboardDown -= keyDownHandler; Events.KeyboardUp -= keyUpHandler; }; }
void CreateAvatar() { Lifespan avatarLifespan = new Lifespan(); Sprite sprite = GetSprite("tank.png"); Vector2D[][] polygons = sprite.Polygons; MultiPolygonShape shape = new MultiPolygonShape(polygons, 4); shape.Tag = sprite; ObjectIgnorer ignorer = new ObjectIgnorer(); Body a = new Body(new PhysicsState(new ALVector2D(0, 0, 0)), shape, 300,//new MassInfo(40, Scalar.PositiveInfinity), coefficients.Duplicate(), avatarLifespan); a.Updated += new EventHandler<UpdatedEventArgs>(avatar_Updated); avatarBodies = new List<Body>(); avatarOffsets = new List<Vector2D>(); avatarJoints = new List<Joint>(); avatarBodies.Add(a); a.CollisionIgnorer = ignorer; Scalar wheelSize = 18; Scalar wheelSpacing = -9; Scalar lenghtPercent = .84f; Matrix2x3 ident = Matrix2x3.Identity; BoundingRectangle rect; shape.CalcBoundingRectangle(ref ident, out rect); Scalar y = (rect.Max.Y +4) ; Body lastWheel = null ; BoundingPolygon polygon = new BoundingPolygon(polygons[0]); Ray ray2 = new Ray(new Vector2D(rect.Max.X, y), -Vector2D.YAxis); Scalar y3 = y - polygon.Intersects(ray2); avatarBarrelOffset = new Vector2D(rect.Max.X, y3); for (Scalar x = rect.Min.X + wheelSize ; x < (rect.Max.X - wheelSize ) * lenghtPercent; x += (wheelSize*2 + wheelSpacing)) { Ray ray = new Ray(new Vector2D(x, y), -Vector2D.YAxis); Scalar y2 = y- polygon.Intersects(ray); Vector2D offset = new Vector2D(x, y2); Body wheel = new Body( new PhysicsState(new ALVector2D(0, offset)), new CircleShape(wheelSize, 30), 10, new Coefficients(0,3),// coefficients.Duplicate(), avatarLifespan); HingeJoint joint = new HingeJoint(a, wheel, offset, avatarLifespan); joint.Softness = .1f; wheel.CollisionIgnorer = ignorer; if (lastWheel != null) { AngleJoint joint2 = new AngleJoint(lastWheel, wheel, avatarLifespan); avatarJoints.Add(joint2); } avatarJoints.Add(joint); avatarOffsets.Add(offset); avatarBodies.Add(wheel); lastWheel = wheel; } }