void Clear()
{
//remove attatchment and points
m_attatched = false;
m_firstPoint = null;
m_secondPoint = null;
//disable edge drawer
m_edge.enabled = false;
}
/// <summary>
/// Handles a mouse down event on the given point
/// </summary>
/// <param name="a_target"></param>
public void MouseDown(TourPoint a_target)
{
//enalbe line drawing
m_edge.enabled = true;
//set first point
m_firstPoint = a_target;
//update edge line start
m_edge.SetPosition(0, a_target.transform.position);
}
/// <summary>
/// Handles a mouse event on a settlement
/// </summary>
/// <param name="a_target"></param>
public void MouseEnter(TourPoint a_target)
{
//don't do anything if no startint point has been selected
if (m_firstPoint == null)
{
return;
}
//add lock to target point
m_attatched = true;
m_secondPoint = a_target;
// update edge line end to target point
m_edge.SetPosition(1, a_target.transform.position);
}
/// <summary>
/// Handles a mouse exit event for a given point
/// </summary>
/// <param name="a_target"></param>
public void MouseExit(TourPoint a_target)
{
//do nothing if settlement was not the current target
if (a_target != m_secondPoint)
{
return;
}
//remove the attatchement lock and the target settlement
m_attatched = false;
m_secondPoint = null;
//update edge to mouse position
var pos = Camera.main.ScreenToWorldPoint(Input.mousePosition + 10 * Vector3.forward);
m_edge.SetPosition(1, pos);
}
/// <summary>
/// Add a road tour segment between 2 points
/// </summary>
/// <param name="a_point1"></param>
/// <param name="a_point2"></param>
public void AddSegment(TourPoint a_point1, TourPoint a_point2)
{
// Dont add edge to itself or double edges
if (a_point1 == a_point2 || m_graph.ContainsEdge(a_point1.Vertex, a_point2.Vertex))
{
return;
}
//instantiate new road mesh object
var roadmesh = Instantiate(m_roadMeshPrefab, Vector3.forward, Quaternion.identity) as GameObject;
roadmesh.transform.parent = this.transform;
roadmesh.name = $"mesh({a_point1.Vertex}, {a_point2.Vertex})";
//remember segment for destoryal later
instantObjects.Add(roadmesh);
//create road mesh
var roadmeshScript = roadmesh.GetComponent <ReshapingMesh>();
roadmeshScript.CreateNewMesh(a_point1.transform.position, a_point2.transform.position);
//create road edge
var edge = m_graph.AddEdge(a_point1.Vertex, a_point2.Vertex);
//error check
if (edge == null)
{
throw new InvalidOperationException("Edge could not be added to graph");
}
//link edge to segment
roadmesh.GetComponent <TourSegment>().Edge = edge;
//check the solution
CheckSolution();
UpdateTextField();
}