private void Awake()
{
streetPieces = GetComponent <StreetPieces>();
// Generate the Wellington layout.
streetLayout = new Levels.Wellington();
Generate();
}
public void Generate(City city)
{
// Create the intersection game object as a child of Intersections.
gameObject = new GameObject($"Intersection ({position.x}, {position.y})");
gameObject.transform.parent = city.transform.Find("Intersections");
// Position in the game world.
Vector2 size = GetSize();
gameObject.transform.localPosition = new Vector3
{
x = position.x - size.x / 2,
z = position.y - size.y / 2
};
// Set bounds.
bounds = new Bounds
{
center = new Vector3(position.x, City.boundsBaseY + City.boundsHeight / 2, position.y),
size = new Vector3(size.x, City.boundsHeight, size.y)
};
// Place prefabs.
StreetPieces streetPieces = city.streetPieces;
GameObject road = streetPieces.Instantiate(streetPieces.roadPrefab, gameObject);
road.transform.localScale = new Vector3(size.x, 1, size.y);
// Place sidewalk corners or sides.
void CreateCorner(float rotation, float x, float z)
{
GameObject corner = streetPieces.Instantiate(streetPieces.sidewalkCornerPrefab, gameObject);
corner.transform.localScale = new Vector3(City.sidewalkWidth, 1, City.sidewalkWidth);
corner.transform.localRotation = Quaternion.Euler(0, rotation, 0);
corner.transform.localPosition = new Vector3 {
x = x, z = z
};
}
if (southStreet != null && westStreet != null)
{
CreateCorner(0, 0, 0);
}
if (northStreet != null && westStreet != null)
{
CreateCorner(90, 0, size.y);
}
if (northStreet != null && eastStreet != null)
{
CreateCorner(180, size.x, size.y);
}
if (southStreet != null && eastStreet != null)
{
CreateCorner(270, size.x, 0);
}
if (northStreet == null)
{
GameObject sidewalk = streetPieces.Instantiate(streetPieces.sidewalkPrefab, gameObject);
sidewalk.transform.localScale = new Vector3(size.x, 1, City.sidewalkWidth);
sidewalk.transform.localPosition = new Vector3 {
z = size.y - City.sidewalkWidth
};
}
if (southStreet == null)
{
GameObject sidewalk = streetPieces.Instantiate(streetPieces.sidewalkPrefab, gameObject);
sidewalk.transform.localScale = new Vector3(size.x, 1, City.sidewalkWidth);
}
if (eastStreet == null)
{
GameObject sidewalk = streetPieces.Instantiate(streetPieces.sidewalkPrefab, gameObject);
sidewalk.transform.localScale = new Vector3(City.sidewalkWidth, 1, size.y);
sidewalk.transform.localPosition = new Vector3 {
x = size.x - City.sidewalkWidth
};
}
if (westStreet == null)
{
GameObject sidewalk = streetPieces.Instantiate(streetPieces.sidewalkPrefab, gameObject);
sidewalk.transform.localScale = new Vector3(City.sidewalkWidth, 1, size.y);
}
// Place lines if one street has priority.
bool hasLinesNorthSouth = false;
bool hasLinesEastWest = false;
Street northSouthStreet = northStreet ?? southStreet;
Street eastWestStreet = eastStreet ?? westStreet;
if (isFourWayIntersection)
{
// 4-way intersections have lines where there are no stop signs on both ends.
hasLinesEastWest = !HasStopLineForStreet(eastStreet) && !HasStopLineForStreet(westStreet);
hasLinesNorthSouth = !HasStopLineForStreet(northStreet) && !HasStopLineForStreet(southStreet);
}
else if (isTIntersection)
{
// T intersections always have priority on the street that doesn't end.
hasLinesEastWest = northStreet == null || southStreet == null;
hasLinesNorthSouth = eastStreet == null || westStreet == null;
}
if (hasLinesNorthSouth)
{
var brokenLineXCoordinates = new List <float>();
if (northSouthStreet.isOneWay)
{
brokenLineXCoordinates.Add(size.x / 2);
}
else
{
GameObject centerLine = streetPieces.Instantiate(streetPieces.solidLinePrefab, gameObject);
centerLine.transform.localScale = new Vector3(1, 1, size.y);
centerLine.transform.localPosition = new Vector3 {
x = size.x / 2
};
}
for (int i = 2; i < northSouthStreet.lanesCount; i += 2)
{
float sideOffset = City.sidewalkWidth + City.laneWidth * (i / 2);
brokenLineXCoordinates.Add(sideOffset);
brokenLineXCoordinates.Add(size.x - sideOffset);
}
foreach (float xCoordinate in brokenLineXCoordinates)
{
GameObject laneLine = streetPieces.Instantiate(streetPieces.brokenLinePrefab, gameObject);
laneLine.transform.localScale = new Vector3(1, 1, size.y);
laneLine.transform.localPosition = new Vector3 {
x = xCoordinate
};
StreetPieces.ChangeBrokenLineTiling(laneLine);
}
}
if (hasLinesEastWest)
{
var brokenLineZCoordinates = new List <float>();
if (eastWestStreet.isOneWay)
{
brokenLineZCoordinates.Add(size.y / 2);
}
else
{
GameObject centerLine = streetPieces.Instantiate(streetPieces.solidLinePrefab, gameObject);
centerLine.transform.localScale = new Vector3(1, 1, size.x);
centerLine.transform.localRotation = Quaternion.Euler(0, 90, 0);
centerLine.transform.localPosition = new Vector3 {
z = size.y / 2
};
}
for (int i = 2; i < eastWestStreet.lanesCount; i += 2)
{
float sideOffset = City.sidewalkWidth + City.laneWidth * (i / 2);
brokenLineZCoordinates.Add(sideOffset);
brokenLineZCoordinates.Add(size.y - sideOffset);
}
foreach (float zCoordinate in brokenLineZCoordinates)
{
GameObject laneLine = streetPieces.Instantiate(streetPieces.brokenLinePrefab, gameObject);
laneLine.transform.localScale = new Vector3(1, 1, size.x);
laneLine.transform.localRotation = Quaternion.Euler(0, 90, 0);
laneLine.transform.localPosition = new Vector3 {
z = zCoordinate
};
StreetPieces.ChangeBrokenLineTiling(laneLine);
}
}
// Place buildings in 4 corners.
void CreateBuilding(float x, float z, float width = City.minBuildingLength, float depth = City.minBuildingLength)
{
GameObject building = streetPieces.Instantiate(streetPieces.buildingPrefab, gameObject);
building.transform.localScale = new Vector3(width, City.buildingHeights[1], depth);
building.transform.localPosition = new Vector3(x, 0, z);
}
CreateBuilding(-City.minBuildingLength, -City.minBuildingLength);
CreateBuilding(-City.minBuildingLength, size.y);
CreateBuilding(size.x, -City.minBuildingLength);
CreateBuilding(size.x, size.y);
// Place buildings in directions where there is no street.
if (northStreet == null)
{
CreateBuilding(0, size.y, width: size.x);
}
if (southStreet == null)
{
CreateBuilding(0, -City.minBuildingLength, width: size.x);
}
if (eastStreet == null)
{
CreateBuilding(size.x, 0, depth: size.y);
}
if (westStreet == null)
{
CreateBuilding(-City.minBuildingLength, 0, depth: size.y);
}
}
public void Generate(City city)
{
// Create the street game object as a child of Streets.
gameObject = new GameObject();
gameObject.transform.parent = city.transform.Find("Streets");
// Calculate size and position in the game world.
Vector2 startIntersectionHalfSize = startIntersection.GetSize() / 2;
Vector2 endIntersectionHalfSize = endIntersection.GetSize() / 2;
float roadWidth = lanesCount * City.laneWidth;
width = roadWidth + 2 * City.sidewalkWidth;
Vector3 boundsOrigin;
Vector3 boundsSize;
if (orientation == StreetOrientation.EastWest)
{
gameObject.name = $"Street ({startIntersection.position.x}-{startIntersection.position.x}, {endIntersection.position.y})";
length = endIntersection.position.x - startIntersection.position.x - startIntersectionHalfSize.x - endIntersectionHalfSize.x;
gameObject.transform.localPosition = new Vector3
{
x = startIntersection.position.x + startIntersectionHalfSize.x,
z = startIntersection.position.y + width / 2
};
// Rotate the road so the local Z axis goes in the positive global X direction.
gameObject.transform.localRotation = Quaternion.Euler(0, 90, 0);
boundsOrigin = gameObject.transform.localPosition;
boundsOrigin.z -= width;
boundsSize = new Vector3(length, City.boundsHeight, width);
}
else
{
gameObject.name = $"Street ({startIntersection.position.x}, {startIntersection.position.y}-{endIntersection.position.y})";
length = endIntersection.position.y - startIntersection.position.y - startIntersectionHalfSize.y - endIntersectionHalfSize.y;
gameObject.transform.localPosition = new Vector3
{
x = startIntersection.position.x - width / 2,
z = startIntersection.position.y + startIntersectionHalfSize.y
};
boundsOrigin = gameObject.transform.localPosition;
boundsSize = new Vector3(width, City.boundsHeight, length);
}
// Set bounds.
bounds = new Bounds
{
min = boundsOrigin + new Vector3(0, City.boundsBaseY, 0),
max = boundsOrigin + boundsSize
};
// Place prefabs.
StreetPieces streetPieces = city.streetPieces;
GameObject road = streetPieces.Instantiate(streetPieces.roadPrefab, gameObject);
road.transform.localScale = new Vector3(roadWidth, 1, length);
road.transform.localPosition = new Vector3 {
x = City.sidewalkWidth
};
GameObject sidewalkLeft = streetPieces.Instantiate(streetPieces.sidewalkPrefab, gameObject);
sidewalkLeft.transform.localScale = new Vector3(City.sidewalkWidth, 1, length);
GameObject sidewalkRight = streetPieces.Instantiate(streetPieces.sidewalkPrefab, gameObject);
sidewalkRight.transform.localScale = new Vector3(City.sidewalkWidth, 1, length);
sidewalkRight.transform.localPosition = new Vector3 {
x = width - City.sidewalkWidth
};
// Place lane division lines.
var brokenLineXCoordinates = new List <float>();
if (isOneWay)
{
brokenLineXCoordinates.Add(width / 2);
}
else
{
GameObject centerLine = streetPieces.Instantiate(streetPieces.solidLinePrefab, gameObject);
centerLine.transform.localScale = new Vector3(1, 1, length);
centerLine.transform.localPosition = new Vector3 {
x = width / 2
};
}
for (int i = 2; i < lanesCount; i += 2)
{
float sideOffset = City.sidewalkWidth + City.laneWidth * (i / 2);
brokenLineXCoordinates.Add(sideOffset);
brokenLineXCoordinates.Add(width - sideOffset);
}
foreach (float xCoordinate in brokenLineXCoordinates)
{
GameObject laneLine = streetPieces.Instantiate(streetPieces.brokenLinePrefab, gameObject);
laneLine.transform.localScale = new Vector3(1, 1, length);
laneLine.transform.localPosition = new Vector3 {
x = xCoordinate
};
StreetPieces.ChangeBrokenLineTiling(laneLine);
}
GameObject CreateStopLine()
{
GameObject stopLine = streetPieces.Instantiate(streetPieces.solidLinePrefab, gameObject);
float lineLength = roadWidth;
if (!isOneWay)
{
lineLength /= 2;
}
stopLine.transform.localScale = new Vector3(1, 1, lineLength);
return(stopLine);
}
// Place intersection stop lines.
if (endIntersection.HasStopLineForStreet(this))
{
GameObject stopLine = CreateStopLine();
stopLine.transform.localRotation = Quaternion.Euler(0, 90, 0);
stopLine.transform.localPosition = new Vector3 {
x = City.sidewalkWidth, z = length - City.lineWidth / 2
};
}
if (startIntersection.HasStopLineForStreet(this))
{
GameObject stopLine = CreateStopLine();
stopLine.transform.localRotation = Quaternion.Euler(0, 270, 0);
stopLine.transform.localPosition = new Vector3 {
x = width - City.sidewalkWidth, z = City.lineWidth / 2
};
}
// Place buildings.
void CreateBuilding(float x, float z, float depth, int heightIndex)
{
GameObject building = streetPieces.Instantiate(streetPieces.buildingPrefab, gameObject);
building.transform.localScale = new Vector3(City.buildingWidth, City.buildingHeights[heightIndex], depth);
building.transform.localPosition = new Vector3(x, 0, z);
}
void PlaceBuildings(float z, float depth)
{
CreateBuilding(-City.buildingWidth, z, depth, Random.Range(0, City.buildingHeights.Length));
CreateBuilding(width, z, depth, Random.Range(0, City.buildingHeights.Length));
}
void PlaceBuildingsInRange(float minZ, float maxZ)
{
// See if we could put 2 or more buildings in this range.
if (maxZ - minZ < City.minBuildingLength * 2)
{
// No, this should be 1 building.
PlaceBuildings(minZ, maxZ - minZ);
}
else
{
// Yes, split into two parts.
float midZ = Random.Range(minZ + City.minBuildingLength, maxZ - City.minBuildingLength);
PlaceBuildingsInRange(minZ, midZ);
PlaceBuildingsInRange(midZ, maxZ);
}
}
PlaceBuildingsInRange(City.minBuildingLength, length - City.minBuildingLength);
}