public static Body CreateCircle(float radius, Vector2 position, Units units, BodyType bodyType, Entity entity)
{
if (units == Units.Pixels)
{
radius = PhysicsConvert.ToMeters(radius);
}
Body body = BodyFactory.CreateCircle(world, radius, 1);
body.BodyType = bodyType;
body.UserData = entity;
return(body);
}
public static Body CreateRectangle(float width, float height, Vector2 position, Units units, BodyType bodyType, Entity entity)
{
if (units == Units.Pixels)
{
width = PhysicsConvert.ToMeters(width);
height = PhysicsConvert.ToMeters(height);
position = PhysicsConvert.ToMeters(position);
}
Body body = BodyFactory.CreateRectangle(world, width, height, 1, position);
body.BodyType = bodyType;
body.UserData = entity;
return(body);
}
public static Fixture AttachEdge(Body body, Edge line, Units units, object userData = null)
{
Vector2 start = line.Start;
Vector2 end = line.End;
if (units == Units.Pixels)
{
start = PhysicsConvert.ToMeters(start);
end = PhysicsConvert.ToMeters(end);
}
Fixture fixture = FixtureFactory.AttachEdge(start, end, body);
fixture.UserData = userData;
return(fixture);
}
public static RayCastResults RayCast(Vector2 start, Vector2 end, Units units)
{
if (units == Units.Pixels)
{
start = PhysicsConvert.ToMeters(start);
end = PhysicsConvert.ToMeters(end);
}
Vector2 hitPosition = Vector2.Zero;
Fixture hitFixture = null;
float closestFraction = float.PositiveInfinity;
world.RayCast((fixture, point, normal, fraction) =>
{
if (fraction < closestFraction)
{
hitPosition = point;
hitFixture = fixture;
closestFraction = fraction;
return(fraction);
}
return(1);
}, start, end);
if (hitFixture == null)
{
return(null);
}
hitPosition = PhysicsConvert.ToPixels(hitPosition);
return(new RayCastResults(hitPosition, (Entity)hitFixture.Body.UserData));
}