protected override void Init(World world)
{
this.world = world;
Body body1 = new StaticBody("Ground1", new Box(400.0f, 20.0f));
body1.SetPosition(250.0f, 400);
body1.Friction = 1;
world.Add(body1);
for (int y = 0; y < 5; y++)
{
int xbase = 250 - (y * 21);
for (int x = 0; x < y + 1; x++)
{
DynamicShape shape = new Box(40, 40);
if ((x == 1) && (y == 2))
{
shape = new Circle(19);
}
if ((x == 1) && (y == 4))
{
shape = new Circle(19);
}
if ((x == 3) && (y == 4))
{
shape = new Circle(19);
}
Body body2 = new Body("Mover1", shape, 100.0f);
body2.SetPosition(xbase + (x * 42), y * 45);
world.Add(body2);
}
}
}
/// <summary> Check if this circle Touches another
///
/// </summary>
/// <param name="x">The x position of this circle
/// </param>
/// <param name="y">The y position of this circle
/// </param>
/// <param name="other">The other circle
/// </param>
/// <param name="ox">The other circle's x position
/// </param>
/// <param name="oy">The other circle's y position
/// </param>
/// <returns> True if they touch
/// </returns>
public virtual bool Touches(float x, float y, Circle other, float ox, float oy)
{
float totalRad2 = Radius + other.Radius;
if (System.Math.Abs(ox - x) > totalRad2)
{
return false;
}
if (System.Math.Abs(oy - y) > totalRad2)
{
return false;
}
totalRad2 *= totalRad2;
float dx = System.Math.Abs(ox - x);
float dy = System.Math.Abs(oy - y);
return totalRad2 >= ((dx * dx) + (dy * dy));
}
/// <summary> Creates a collider for a Circle and a Shape.
/// The choice is based on the kind of Shape that is provided
///
/// </summary>
/// <param name="shapeA">The circle to provide a collider for
/// </param>
/// <param name="shapeB">The shape to provide a collider for
/// </param>
/// <returns> a suitable collider
/// </returns>
/// <throws> ColliderUnavailableException </throws>
/// <summary> This exception will be thrown if no suitable collider can be found.
/// </summary>
public virtual Collider CreateColliderFor(Circle shapeA, Shape shapeB)
{
if (shapeB is Circle)
{
return new CircleCircleCollider();
}
else if (shapeB is Box)
{
return new SwapCollider(new BoxCircleCollider());
}
else if (shapeB is Line)
{
return new SwapCollider(new LineCircleCollider());
}
else if (shapeB is Polygon)
{
return new SwapCollider(new PolygonCircleCollider());
}
throw new ColliderUnavailableException(shapeA, shapeB);
}
protected override void DrawCircleBody(Body body, Circle circle)
{
float x = body.GetPosition().X;
float y = body.GetPosition().Y;
float r = circle.Radius;
float rot = body.Rotation;
float xo = (float)(System.Math.Cos(rot) * r);
float yo = (float)(System.Math.Sin(rot) * r);
var circleSize = new Vector2f(circle.Radius * 2, circle.Radius * 2);
UIElement e = body.UserData as UIElement;
if (e == null)
{
e = new VisualCircle(circleSize, imagePath);
canvas.Children.Add(e);
body.UserData = e;
}
UpdateElementPosition(e, x, y, circleSize);
ApplyRotationToElement(e, circle.Radius * 2, circle.Radius * 2, RadToDeg(body.Rotation));
}
protected virtual void DrawCircleBody(Body body, Circle circle)
{
float x = body.GetPosition().X;
float y = body.GetPosition().Y;
float r = circle.Radius;
float rot = body.Rotation;
float xo = (float)(System.Math.Cos(rot) * r);
float yo = (float)(System.Math.Sin(rot) * r);
Ellipse e = body.UserData as Ellipse;
if (e == null)
{
e = new Ellipse();
e.Stroke = new SolidColorBrush(Colors.Yellow);
e.StrokeThickness = 1;
e.Width = r * 2;
e.Height = r * 2;
canvas.Children.Add(e);
body.UserData = e;
}
var circleSize = new Vector2f(circle.Radius*2, circle.Radius*2);
UpdateElementPosition(e, Convert.ToInt32(x), Convert.ToInt32(y), circleSize);
}
