public void Update()
{
if (drawGraph && m_Graph != null)
{
Debug.DrawLine(new Vector2(left, top), new Vector2(right, top), Color.blue);
Debug.DrawLine(new Vector2(right, top), new Vector2(right, bottom), Color.blue);
Debug.DrawLine(new Vector2(right, bottom), new Vector2(left, bottom), Color.blue);
Debug.DrawLine(new Vector2(left, bottom), new Vector2(left, top), Color.blue);
CityGraph.Edge[] graphEdges = m_Graph.GetEdges();
for (int i = 0; i < graphEdges.Length; i++)
{
Debug.DrawLine(
graphEdges[i].pointA.position.ConvertToWorldPoint(m_PointSpacing),
graphEdges [i].pointB.position.ConvertToWorldPoint(m_PointSpacing),
Color.red);
}
}
if (iterations > m_LastIterations)
{
int newIterations = iterations - m_LastIterations;
m_LastIterations = iterations;
m_Graph = BuildRRT(m_Graph, newIterations, increment);
}
}
private CityGraph AddBuildingsToCity(CityGraph currentCity, int lotsToPlace)
{
//Sort Edges by distance from the center in travel time.
List <CityGraph.Edge> allEdges = new List <CityGraph.Edge>(currentCity.GetEdges());
allEdges.Sort(CompareEdges);
//place lots on edges (left or right)
//Lots are made up of at least 4 points.
float totalLotsToPlace = lotsToPlace;
for (int i = 0; i < allEdges.Count && lotsToPlace > 0; i++)
{
if (Random.value < (1 - populationDensity))
{
continue;
}
if (allEdges [i].NeighbouringLotsCount < 2)
{
GridPoint point1 = allEdges [i].pointA.position;
GridPoint point2 = allEdges [i].pointB.position;
Vector2 point1Vec = point1.ConvertToWorldPoint(m_PointSpacing);
Vector2 point2Vec = point2.ConvertToWorldPoint(m_PointSpacing);
Vector2 edgeVector = point2Vec - point1Vec;
Vector2 rhNormal = new Vector2(edgeVector.y, -edgeVector.x);
Vector2 lhNormal = new Vector2(-edgeVector.y, edgeVector.x);
CityGraph.Lot rhLot = new CityGraph.Lot(point1, point2, ConvertToGridPoint(point1Vec + rhNormal), ConvertToGridPoint(point2Vec + rhNormal));
CityGraph.Lot lhLot = new CityGraph.Lot(point1, point2, ConvertToGridPoint(point1Vec + lhNormal), ConvertToGridPoint(point2Vec + lhNormal));
bool coinFlip = Random.value > 0.5f;
CityGraph.Lot lotToAdd = rhLot;
if (coinFlip == true)
{
lotToAdd = lhLot;
}
bool success = currentCity.AddLot(allEdges [i], lotToAdd);
if (!success)
{
lotToAdd = coinFlip ? rhLot : lhLot;
success = currentCity.AddLot(allEdges [i], lotToAdd);
}
if (success)
{
lotsToPlace--;
}
}
}
return(currentCity);
}
public List <Collider2D> DrawRoads(CityGraph graph, float pointSpacing)
{
ClearLastObjects();
List <Collider2D> newObstructions = new List <Collider2D> ();
CityGraph.Edge[] graphEdges = graph.GetEdges();
for (int i = 0; i < graphEdges.Length; i++)
{
GameObject segment = Instantiate <GameObject> (roadSegment);
m_Roads.Add(segment);
LineRenderer segmentRederer = segment.GetComponent <LineRenderer> ();
Vector3[] positions = new Vector3[2];
positions [0] = graphEdges [i].pointA.position.ConvertToWorldPoint(pointSpacing);
positions [1] = graphEdges [i].pointB.position.ConvertToWorldPoint(pointSpacing);
segmentRederer.SetPositions(positions);
segmentRederer.widthMultiplier *= Mathf.Min(Vector3.Distance(positions [0], positions [1]), 2);
}
CityGraph.Lot[] lots = graph.GetLots();
for (int i = 0; i < lots.Length; i++)
{
GameObject building = Instantiate <GameObject> (buildingPrefab);
m_Buildings.Add(building);
Vector2 upVector = lots [i].corners [1].ConvertToWorldPoint(pointSpacing) - lots [i].corners [0].ConvertToWorldPoint(pointSpacing);
Vector2 rightVector = lots [i].corners [2].ConvertToWorldPoint(pointSpacing) - lots [i].corners [1].ConvertToWorldPoint(pointSpacing);
float width = Mathf.Min(maxBuildingWidth, rightVector.magnitude) * 0.9f;
float depth = Mathf.Min(maxBuildingDepth, upVector.magnitude) * 0.9f;
float height = (width + depth) / 2;
building.transform.localScale = new Vector3(depth, width, height);
float x = Vector2.Dot(rightVector, Vector2.right);
float y = Vector2.Dot(rightVector, Vector2.up);
float angle = Mathf.Rad2Deg * Mathf.Acos(x / Mathf.Max(rightVector.magnitude, 0.01f));
if (y < 0)
{
angle *= -1;
}
building.transform.localEulerAngles = new Vector3(0, 0, angle);
Vector3 position = (Vector3)lots [i].GetCenter(pointSpacing);
position.z = -height / 2;
building.transform.localPosition = position;
newObstructions.Add(building.GetComponent <Collider2D> ());
}
return(newObstructions);
}