private void NextStepFixedFrictionJoint(Vector2 position)
{
switch (_step)
{
case 0:
_currentStateMessage = "Creating fixed friction joint. Choose Body...";
_step++;
break;
case 1:
Body body = CommonHelpers.FindBody(position, _world);
if (body == null)
{
_currentStateMessage = "Cant find body in this position. Choose Body...";
break;
}
_currentStateMessage = "Body has been selected. Choose body anchor...";
_jointParameters.bodyA = body;
_step++;
break;
case 2:
_currentStateMessage = "Body anchor has been selected. FIXED FRICTION JOINT CREATED";
_jointParameters.localAnchorA = CommonHelpers.CalculateLocalPoint(position, _jointParameters.bodyA);
_joint = new FixedFrictionJoint(_jointParameters.bodyA, _jointParameters.localAnchorA);
_step = 0;
break;
default:
throw new ArgumentOutOfRangeException("Unknown join creation step");
}
}
private void NextStepWeldJoint(Vector2 position)
{
switch (_step)
{
case 0:
_currentStateMessage = "Creating weld joint. Choose BodyA...";
_step++;
break;
case 1:
Body bodyA = CommonHelpers.FindBody(position, _world);
if (bodyA == null)
{
_currentStateMessage = "Cant find body in this position. Choose BodyA...";
break;
}
_currentStateMessage = "BodyA has been selected. Choose LocalAnchorA...";
_jointParameters.bodyA = bodyA;
_step++;
break;
case 2:
Vector2 localAnchorA = CommonHelpers.CalculateLocalPoint(position, _jointParameters.bodyA);
_currentStateMessage = string.Format("AnchorA has been selected. Position - {0}, local position - {1}. Choose BodyB...", position.ToString(), localAnchorA.ToString());
_jointParameters.localAnchorA = localAnchorA;
_step++;
break;
case 3:
Body bodyB = CommonHelpers.FindBody(position, _world);
if (bodyB == null)
{
_currentStateMessage = "Cant find body in this position. Choose BodyB...";
break;
}
_currentStateMessage = "BodyB has been selected. Choose LocalAnchorB...";
_jointParameters.bodyB = bodyB;
_step++;
break;
case 4:
Vector2 localAnchorB = CommonHelpers.CalculateLocalPoint(position, _jointParameters.bodyB);
_currentStateMessage = string.Format("AnchorB has been selected. Position - {0}, local position - {1}. WELD JOINT CREATED.", position.ToString(), localAnchorB.ToString());
_jointParameters.localAnchorB = localAnchorB;
_joint = new WeldJoint(_jointParameters.bodyA, _jointParameters.bodyB, _jointParameters.localAnchorA, _jointParameters.localAnchorB);
_step = 0;
break;
default:
throw new ArgumentOutOfRangeException("Unknown join creation step");
}
}
public void NextStep(Vector2 position)
{
switch (_step)
{
case 0:
_finished = false;
_statusMessage = "Attaching fixture to body. Choose body...";
_step++;
break;
case 1:
_foundBody = CommonHelpers.FindBody(position, _world);
if (_foundBody == null)
{
_statusMessage = "Cant find body in this position. Choose Body...";
break;
}
_statusMessage = "Body has been selected. Choose fixture position...";
_step++;
break;
case 2:
Vector2 offset = CommonHelpers.CalculateLocalPoint(position, _foundBody);
Vertices _tempShapeVertices = new Vertices(_initialShapeVertices);
_tempShapeVertices.Rotate(-_foundBody.Rotation);
_tempShapeVertices.Rotate(_prototypeBody.Rotation);
_tempShapeVertices.Translate(ref offset);
List <Vertices> decomposedVerts = EarclipDecomposer.ConvexPartition(_tempShapeVertices);
_resultShapeList = new List <Shape>(decomposedVerts.Count);
foreach (Vertices vertices in decomposedVerts)
{
if (vertices.Count == 2)
{
_resultShapeList.Add(new EdgeShape(vertices[0], vertices[1]));
}
else
{
_resultShapeList.Add(new PolygonShape(vertices, _prototypeBody.Density == null ? 1f : (float)_prototypeBody.Density));
}
}
_statusMessage = "Fixture has been created.";
_finished = true;
_step = 0;
break;
}
}
private void NextStepFixedRevoluteJoint(Vector2 position)
{
switch (_step)
{
case 0:
_currentStateMessage = "Creating fixed revolute joint. Choose Body...";
_step++;
break;
case 1:
Body body = CommonHelpers.FindBody(position, _world);
if (body == null)
{
_currentStateMessage = "Cant find body in this position. Choose Body...";
break;
}
_currentStateMessage = "Body has been selected. Choose body anchor...";
_jointParameters.bodyA = body;
_step++;
break;
case 2:
Vector2 bodyAnchor = CommonHelpers.CalculateLocalPoint(position, _jointParameters.bodyA);
_currentStateMessage = string.Format("Body anchor has been selected. Position - {0}, local position - {1}. Choose world anchor...", position.ToString(), bodyAnchor.ToString());
_jointParameters.localAnchorA = bodyAnchor;
_step++;
break;
case 3:
_currentStateMessage = string.Format("World anchor has been selected. Position - {0}. FIXED DISTANCE JOINT CREATED.", position.ToString());
_jointParameters.worldAnchorA = position;
_joint = new FixedRevoluteJoint(_jointParameters.bodyA, _jointParameters.localAnchorA, _jointParameters.worldAnchorA);
_step = 0;
break;
default:
throw new ArgumentOutOfRangeException("Unknown join creation step");
}
}
private void NextStepPrismaticJoint(Vector2 position)
{
switch (_step)
{
case 0:
_currentStateMessage = "Creating prismatic joint. Choose BodyA...";
_step++;
break;
case 1:
Body bodyA = CommonHelpers.FindBody(position, _world);
if (bodyA == null)
{
_currentStateMessage = "Cant find body in this position. Choose BodyA...";
break;
}
_currentStateMessage = "BodyA has been selected. Choose LocalAnchorA...";
_jointParameters.bodyA = bodyA;
_step++;
break;
case 2:
Vector2 localAnchorA = CommonHelpers.CalculateLocalPoint(position, _jointParameters.bodyA);
_currentStateMessage = string.Format("AnchorA has been selected. Position - {0}, local position - {1}. Choose BodyB...", position.ToString(), localAnchorA.ToString());
_jointParameters.localAnchorA = localAnchorA;
_step++;
break;
case 3:
Body bodyB = CommonHelpers.FindBody(position, _world);
if (bodyB == null)
{
_currentStateMessage = "Cant find body in this position. Choose BodyB...";
break;
}
_currentStateMessage = "BodyB has been selected. Choose LocalAnchorB...";
_jointParameters.bodyB = bodyB;
_step++;
break;
case 4:
Vector2 localAnchorB = CommonHelpers.CalculateLocalPoint(position, _jointParameters.bodyB);
_currentStateMessage = string.Format("AnchorB has been selected. Position - {0}, local position - {1}. Detecting axis. Select first axis point...", position.ToString(), localAnchorB.ToString());
_jointParameters.localAnchorB = localAnchorB;
_step++;
break;
case 5:
_currentStateMessage = string.Format("First axis point has been selected. Position - {0}. Detecting axis. Select second axis point...", position.ToString());
_jointParameters.axisFirst = position;
_step++;
break;
case 6:
Vector2 axis = (position - _jointParameters.axisFirst);
axis.Normalize();
_jointParameters.axisSecond = position;
_currentStateMessage = string.Format("Second axis point has been selected. Position - {0}, axis - {1}. PRISMATIC JOINT CREATED.", position.ToString(), axis.ToString());
_joint = new PrismaticJoint(_jointParameters.bodyA, _jointParameters.bodyB, _jointParameters.localAnchorA, _jointParameters.localAnchorB, axis);
_step = 0;
break;
default:
throw new ArgumentOutOfRangeException("Unknown join creation step");
}
}
