/// <summary>
/// Goes road by road to create sidewalks
/// Once a side of the road (designated by a road and the intersection it comes from) is used, don't try to use it again
/// </summary>
private IEnumerator GenerateBlock()
{
GameObject parentObject = new GameObject();
parentObject.name = "Block";
parentObject.isStatic = true;
HashSet <SidewalkCheckHelper> usedRoads = new HashSet <SidewalkCheckHelper>();
List <Sidewalk> sidewalks = new List <Sidewalk>();
SidewalkCheckHelper check = new SidewalkCheckHelper();
// TODO: Add list of all roads to city info to optimize this
for (int i = 0; i < city.Nodes.Count; i++)
{
for (int j = 0; j < city.Nodes[i].Roads.Count; j++)
{
check.Intersection = city.Nodes[i];
check.Road = city.Nodes[i].Roads[j];
if (!usedRoads.Contains(check))
{
usedRoads.Add(check);
sidewalks.Add(CreateSidewalk(city.Nodes[i], city.Nodes[i].Roads[j], usedRoads, parentObject));
}
}
}
// Create buildings
// Use collisions to make sure buildings don't collide with roads
// TODO: Add list of all roads to city info to optimize this
GameObject buildingObject = new GameObject();
buildingObject.name = "Buildings";
buildingObject.transform.parent = parentObject.transform;
buildingObject.isStatic = true;
HashSet <RoadSegment> roads = new HashSet <RoadSegment>();
for (int i = 0; i < city.Nodes.Count; i++)
{
for (int j = 0; j < city.Nodes[i].Roads.Count; j++)
{
if (!roads.Contains(city.Nodes[i].Roads[j]))
{
roads.Add(city.Nodes[i].Roads[j]);
yield return(EditorCoroutineUtility.StartCoroutine(CreateBuildings(city.Nodes[i].Roads[j], buildingObject), this));
}
}
}
// After buildings are created, create the infill mesh
for (int i = 0; i < sidewalks.Count; i++)
{
if (!sidewalks[i].IsSurroundingSidewalk())
{
sidewalks[i].CreateFillMesh();
}
}
}
/// <summary>
/// Gets all the points that will form a sidewalk
/// </summary>
/// <param name="startIntersection"></param>
/// <param name="roadSegment"></param>
/// <param name="checks"></param>
/// <param name="parent"></param>
private Sidewalk CreateSidewalk(Intersection startIntersection, RoadSegment roadSegment, HashSet <SidewalkCheckHelper> checks, GameObject parent)
{
Intersection current = startIntersection;
Intersection next = roadSegment.GetOtherSide(startIntersection);
RoadSegment nextSegment = null;
GameObject go = new GameObject();
go.name = "Sidewalk Mesh";
Sidewalk sidewalk = go.AddComponent <Sidewalk>();
sidewalk.OriginalVertices.Add(roadSegment.GetVertexWorldPosition(startIntersection, false));
SidewalkCheckHelper check = new SidewalkCheckHelper();
while (next != startIntersection)
{
int nextIndex = (next.Roads.IndexOf(roadSegment) + 1) % (next.Roads.Count);
nextSegment = next.Roads[nextIndex];
check.Intersection = next;
check.Road = nextSegment;
checks.Add(check);
if (next.Roads.Count == 1)
{
sidewalk.OriginalVertices.Add(nextSegment.GetVertexWorldPosition(next, true));
sidewalk.OriginalVertices.Add(nextSegment.GetVertexWorldPosition(next, false));
}
else if (!(Mathf.Approximately(roadSegment.GetVertexWorldPosition(next, true).x, nextSegment.GetVertexWorldPosition(next, false).x) &&
Mathf.Approximately(roadSegment.GetVertexWorldPosition(next, true).z, nextSegment.GetVertexWorldPosition(next, false).z)))
{
sidewalk.OriginalVertices.Add(roadSegment.GetVertexWorldPosition(next, true));
sidewalk.OriginalVertices.Add(nextSegment.GetVertexWorldPosition(next, false));
}
else
{
sidewalk.OriginalVertices.Add(nextSegment.GetVertexWorldPosition(next, false));
}
current = next;
next = nextSegment.GetOtherSide(next);
roadSegment = nextSegment;
}
if (nextSegment != null &&
!(Mathf.Approximately(sidewalk.OriginalVertices[0].x, nextSegment.GetVertexWorldPosition(next, true).x) &&
Mathf.Approximately(sidewalk.OriginalVertices[0].z, nextSegment.GetVertexWorldPosition(next, true).z)))
{
sidewalk.OriginalVertices.Add(nextSegment.GetVertexWorldPosition(next, true));
}
Vector3 sum = Vector3.zero;
for (int i = 0; i < sidewalk.OriginalVertices.Count; i++)
{
sum += sidewalk.OriginalVertices[i];
}
go.transform.position = sum / sidewalk.OriginalVertices.Count;
sidewalk.SidewalkMaterial = city.SidewalkMaterial;
sidewalk.InnerMaterial = city.InnerBlockMaterial;
sidewalk.FixMeshOffset();
sidewalk.FindDirection();
sidewalk.CalculateVertices();
sidewalk.CreateMesh();
go.transform.parent = parent.transform;
go.isStatic = true;
return(sidewalk);
}
