public void Load(Demo demo, PhysicsSimulator physicsSimulator)
{
_circleBody = new Body[_count];
_circleGeom = new Geom[_count];
_circleBody[0] = BodyFactory.Instance.CreateCircleBody(physicsSimulator, _radius, .1f);
_circleBody[0].Position = _startPosition;
demo.AddCircleToCanvas(_circleBody[0], _color, _radius);
for (int i = 1; i < _count; i++)
{
_circleBody[i] = BodyFactory.Instance.CreateBody(physicsSimulator, _circleBody[0]);
_circleBody[i].Position = Vector2.Lerp(_startPosition, _endPosition, i / (float)(_count - 1));
demo.AddCircleToCanvas(_circleBody[i], _color, _radius);
}
_circleGeom[0] = GeomFactory.Instance.CreateCircleGeom(physicsSimulator, _circleBody[0], _radius, 10);
_circleGeom[0].RestitutionCoefficient = .7f;
_circleGeom[0].FrictionCoefficient = .2f;
_circleGeom[0].CollisionCategories = _collisionCategories;
_circleGeom[0].CollidesWith = _collidesWith;
for (int j = 1; j < _count; j++)
{
_circleGeom[j] = GeomFactory.Instance.CreateGeom(physicsSimulator, _circleBody[j], _circleGeom[0]);
}
}
public void Load(Demo demo, PhysicsSimulator physicsSimulator)
{
_circleBody = new Body[_count];
_circleGeom = new Geom[_count];
_circleBody[0] = BodyFactory.Instance.CreateCircleBody(physicsSimulator, _radius, .1f);
_circleBody[0].Position = _startPosition;
demo.AddCircleToCanvas(_circleBody[0], _color, _radius);
for (int i = 1; i < _count; i++)
{
_circleBody[i] = BodyFactory.Instance.CreateBody(physicsSimulator, _circleBody[0]);
_circleBody[i].Position = Vector2.Lerp(_startPosition, _endPosition, i / (float)(_count - 1));
demo.AddCircleToCanvas(_circleBody[i], _color, _radius);
}
_circleGeom[0] = GeomFactory.Instance.CreateCircleGeom(physicsSimulator, _circleBody[0], _radius, 10);
_circleGeom[0].RestitutionCoefficient = .7f;
_circleGeom[0].FrictionCoefficient = .2f;
_circleGeom[0].CollisionCategories = _collisionCategories;
_circleGeom[0].CollidesWith = _collidesWith;
for (int j = 1; j < _count; j++)
{
_circleGeom[j] = GeomFactory.Instance.CreateGeom(physicsSimulator, _circleBody[j], _circleGeom[0]);
}
}
public void Load(Demo demo, PhysicsSimulator physicsSimulator)
{
//Load bodies
_spiderBody = BodyFactory.Instance.CreateCircleBody(physicsSimulator, _spiderBodyRadius, 1);
_spiderBody.Position = _position;
_spiderBody.IsStatic = false;
demo.AddCircleToCanvas(_spiderBody, _spiderBodyRadius);
_leftUpperLegBody = BodyFactory.Instance.CreateRectangleBody(physicsSimulator, _upperLegSize.X,
_upperLegSize.Y,
1);
_leftUpperLegBody.Position = _spiderBody.Position - new Vector2(_spiderBodyRadius, 0) -
new Vector2(_upperLegSize.X / 2, 0);
demo.AddRectangleToCanvas(_leftUpperLegBody, Colors.White, new Vector2(_upperLegSize.X, _upperLegSize.Y));
_leftLowerLegBody = BodyFactory.Instance.CreateRectangleBody(physicsSimulator, _lowerLegSize.X,
_lowerLegSize.Y,
1);
_leftLowerLegBody.Position = _spiderBody.Position - new Vector2(_spiderBodyRadius, 0) -
new Vector2(_upperLegSize.X, 0) - new Vector2(_lowerLegSize.X / 2, 0);
demo.AddRectangleToCanvas(_leftLowerLegBody, Colors.Red, new Vector2(_lowerLegSize.X, _lowerLegSize.Y));
_rightUpperLegBody = BodyFactory.Instance.CreateRectangleBody(physicsSimulator, _upperLegSize.X,
_upperLegSize.Y, 1);
_rightUpperLegBody.Position = _spiderBody.Position + new Vector2(_spiderBodyRadius, 0) +
new Vector2(_upperLegSize.X / 2, 0);
demo.AddRectangleToCanvas(_rightUpperLegBody, Colors.White, new Vector2(_upperLegSize.X, _upperLegSize.Y));
_rightLowerLegBody = BodyFactory.Instance.CreateRectangleBody(physicsSimulator, _lowerLegSize.X,
_lowerLegSize.Y, 1);
_rightLowerLegBody.Position = _spiderBody.Position + new Vector2(_spiderBodyRadius, 0) +
new Vector2(_upperLegSize.X, 0) + new Vector2(_lowerLegSize.X / 2, 0);
demo.AddRectangleToCanvas(_rightLowerLegBody, Colors.Red, new Vector2(_lowerLegSize.X, _lowerLegSize.Y));
//load geometries
_spiderGeom = GeomFactory.Instance.CreateCircleGeom(physicsSimulator, _spiderBody, _spiderBodyRadius, 14);
_leftUpperLegGeom = GeomFactory.Instance.CreateRectangleGeom(physicsSimulator, _leftUpperLegBody,
_upperLegSize.X, _upperLegSize.Y);
_leftLowerLegGeom = GeomFactory.Instance.CreateRectangleGeom(physicsSimulator, _leftLowerLegBody,
_lowerLegSize.X, _lowerLegSize.Y);
_rightUpperLegGeom = GeomFactory.Instance.CreateRectangleGeom(physicsSimulator, _rightUpperLegBody,
_upperLegSize.X, _upperLegSize.Y);
_rightLowerLegGeom = GeomFactory.Instance.CreateRectangleGeom(physicsSimulator, _rightLowerLegBody,
_lowerLegSize.X, _lowerLegSize.Y);
_spiderGeom.CollisionGroup = _collisionGroup;
_leftUpperLegGeom.CollisionGroup = _collisionGroup;
_leftLowerLegGeom.CollisionGroup = _collisionGroup;
_rightUpperLegGeom.CollisionGroup = _collisionGroup;
_rightLowerLegGeom.CollisionGroup = _collisionGroup;
//load joints
JointFactory.Instance.CreateRevoluteJoint(physicsSimulator, _spiderBody,
_leftUpperLegBody,
_spiderBody.Position -
new Vector2(_spiderBodyRadius, 0));
_leftShoulderAngleJoint = JointFactory.Instance.CreateAngleJoint(physicsSimulator, _spiderBody,
_leftUpperLegBody);
_leftShoulderAngleJoint.TargetAngle = -.4f;
_leftShoulderAngleJoint.MaxImpulse = 300;
JointFactory.Instance.CreateRevoluteJoint(physicsSimulator, _spiderBody,
_rightUpperLegBody,
_spiderBody.Position +
new Vector2(_spiderBodyRadius, 0));
_rightShoulderAngleJoint = JointFactory.Instance.CreateAngleJoint(physicsSimulator, _spiderBody,
_rightUpperLegBody);
_rightShoulderAngleJoint.TargetAngle = .4f;
_leftShoulderAngleJoint.MaxImpulse = 300;
JointFactory.Instance.CreateRevoluteJoint(physicsSimulator, _leftUpperLegBody,
_leftLowerLegBody,
_spiderBody.Position -
new Vector2(_spiderBodyRadius, 0) -
new Vector2(_upperLegSize.X, 0));
_leftKneeAngleJoint = JointFactory.Instance.CreateAngleJoint(physicsSimulator, _leftUpperLegBody,
_leftLowerLegBody);
_leftKneeAngleJoint.TargetAngle = -_kneeTargetAngle;
_leftKneeAngleJoint.MaxImpulse = 300;
JointFactory.Instance.CreateRevoluteJoint(physicsSimulator, _rightUpperLegBody,
_rightLowerLegBody,
_spiderBody.Position +
new Vector2(_spiderBodyRadius, 0) +
new Vector2(_upperLegSize.X, 0));
_rightKneeAngleJoint = JointFactory.Instance.CreateAngleJoint(physicsSimulator, _rightUpperLegBody,
_rightLowerLegBody);
_rightKneeAngleJoint.TargetAngle = _kneeTargetAngle;
_rightKneeAngleJoint.MaxImpulse = 300;
}
public void Load(Demo demo, PhysicsSimulator physicsSimulator)
{
int radius;
if (_attachPoint == 0 | _attachPoint == 2)
{
radius = _rectangleHeight;
}
else
{
radius = _rectangleWidth;
}
//body is created as rectangle so that it has the moment of inertia closer to the final shape of the object.
_angleSpringleverBody = BodyFactory.Instance.CreateRectangleBody(physicsSimulator, _rectangleWidth,
_rectangleHeight, 1f);
demo.AddRectangleToCanvas(_angleSpringleverBody, Colors.White,
new Vector2(_rectangleWidth, _rectangleHeight));
_rectangleGeom = GeomFactory.Instance.CreateRectangleGeom(physicsSimulator, _angleSpringleverBody,
_rectangleWidth, _rectangleHeight);
_rectangleGeom.FrictionCoefficient = .5f;
_rectangleGeom.CollisionGroup = _collisionGroup;
Vector2 offset = Vector2.Zero;
switch (_attachPoint)
{
case 0:
{
offset = new Vector2(-_rectangleWidth / 2f, 0); //offset to rectangle to left
break;
}
case 1:
{
offset = new Vector2(0, -_rectangleHeight / 2f); //offset to rectangle to top
break;
}
case 2:
{
offset = new Vector2(_rectangleWidth / 2f, 0); //offset to rectangle to right
break;
}
case 3:
{
offset = new Vector2(0, _rectangleHeight / 2f); //offset to rectangle to bottom
break;
}
}
_angleSpringleverBody.Position = _position - offset;
Ellipse circle = demo.AddCircleToCanvas(null, Colors.White, 20);
Demo.CenterAround(circle, _position);
_circleGeom = GeomFactory.Instance.CreateCircleGeom(physicsSimulator, _angleSpringleverBody, radius, 20,
offset, 0);
_circleGeom.FrictionCoefficient = .5f;
_circleGeom.CollisionGroup = _collisionGroup;
JointFactory.Instance.CreateFixedRevoluteJoint(physicsSimulator, _angleSpringleverBody,
_position);
SpringFactory.Instance.CreateFixedAngleSpring(physicsSimulator, _angleSpringleverBody,
_springConstant, _dampningConstant);
}