public static bool CreateSquareGrid(SquareGridParams gridParams, out PolyGrid grid)
{
GameObject go = new GameObject("Grid");
grid = go.AddComponent <PolyGrid>();
grid.Dimensions = gridParams.Dimensions;
grid.FacesPerSide = gridParams.FacesPerSide;
return(PopulateSquareGrid(ref grid));
}
public static bool PopulateSquareGrid(ref PolyGrid grid)
{
SquareGridParams gridParams = new SquareGridParams(grid);
Vector2 faceDimensions = gridParams.GetFaceDimensions();
Vector2Int vertsPerSide = gridParams.NumVertices();
Node[,] vertices = new Node[vertsPerSide.x, vertsPerSide.y];
GridNode[,] faces = new GridNode[gridParams.FacesPerSide.x, gridParams.FacesPerSide.y];
//Add Vertices
for (int x = 0; x < vertsPerSide.x; x++)
{
for (int y = 0; y < vertsPerSide.y; y++)
{
Vector2 vertex = new Vector2(faceDimensions.x * x, faceDimensions.y * y);
vertices[x, y] = new Node(vertex);
//Add vertex to grid
grid.AddVertex(vertices[x, y]);
}
}
//Connect Vertices
for (int x = 0; x < vertsPerSide.x; x++)
{
for (int y = 0; y < vertsPerSide.y; y++)
{
if (x < vertsPerSide.x - 1)
{
vertices[x, y].AddConnection(vertices[x + 1, y]);
}
if (y < vertsPerSide.y - 1)
{
vertices[x, y].AddConnection(vertices[x, y + 1]);
}
}
}
GridFaceFactory <GridNode> faceFactory = new GridFaceFactory <GridNode>();
//Create Faces
for (int x = 0; x < gridParams.FacesPerSide.x; x++)
{
for (int y = 0; y < gridParams.FacesPerSide.y; y++)
{
Vector2 vertex = Vector2.Lerp(vertices[x, y].GetPositionXZ(), vertices[x + 1, y + 1].GetPositionXZ(), 0.5f);
faces[x, y] = faceFactory.GetNewGridFace(vertex, new Node[] { vertices[x, y], vertices[x + 1, y], vertices[x, y + 1], vertices[x + 1, y + 1] });
grid.AddFace(faces[x, y]);
}
}
return(grid != null);
}
public SquareGridParams(PolyGrid source)
{
Dimensions = source.Dimensions;
FacesPerSide = source.FacesPerSide;
}
public static void GeneratePerlinGrid(ref PolyGrid grid, int low, int high)
{
SquareGridParams gridParams = new SquareGridParams(grid);
Vector2 faceDimensions = gridParams.GetFaceDimensions();
Vector2Int vertsPerSide = gridParams.NumVertices();
Node[,] vertices = new Node[vertsPerSide.x, vertsPerSide.y];
for (int x = 0; x < vertsPerSide.x; x++)
{
for (int y = 0; y < vertsPerSide.y; y++)
{
Vector2 vertex = new Vector2(faceDimensions.x * x, faceDimensions.y * y);
vertices[x, y] = new Node(vertex);
grid.AddVertex(vertices[x, y]);
}
}
//Connect Vertices
for (int x = 0; x < vertsPerSide.x; x++)
{
for (int y = 0; y < vertsPerSide.y; y++)
{
if (x < vertsPerSide.x - 1)
{
vertices[x, y].AddConnection(vertices[x + 1, y]);
}
if (y < vertsPerSide.y - 1)
{
vertices[x, y].AddConnection(vertices[x, y + 1]);
}
}
}
Dictionary <Vector2, Node> faceVertices = new Dictionary <Vector2, Node>();
//Create Faces
for (int x = 0; x < grid.FacesPerSide.x; x++)
{
for (int y = 0; y < grid.FacesPerSide.y; y++)
{
Vector3 vertex = vertices[x, y].GetPosition();
//random roads
int roadNumberEastWest = Random.Range(low, high + 1);
int roadNumberNorthSouth = Random.Range(low, high + 1);
float intervalEastWest = faceDimensions.x / roadNumberEastWest;
float intervalNorthSouth = faceDimensions.y / roadNumberNorthSouth;
for (int localx = 0; localx < roadNumberEastWest; localx++)
{
for (int z = 0; z < roadNumberNorthSouth; z++)
{
Vector2 bottomLeft = new Vector2(vertex.x + (localx * intervalEastWest), vertex.z + (z * intervalNorthSouth));
Vector2 topRight = new Vector2(vertex.x + ((localx + 1) * intervalEastWest), vertex.z + ((z + 1) * intervalNorthSouth));
Vector2 centerVert = Vector2.Lerp(bottomLeft, topRight, 0.5f);
Vector2 bottomRight = new Vector2(vertex.x + ((localx + 1) * intervalEastWest), vertex.z + (z * intervalNorthSouth));
Vector2 topLeft = new Vector2(vertex.x + (localx * intervalEastWest), vertex.z + ((z + 1) * intervalNorthSouth));
Node bottomLeftNode;
Node topRightNode;
Node bottomRightNode;
Node topLeftNode;
if (!faceVertices.TryGetValue(bottomLeft, out bottomLeftNode))
{
bottomLeftNode = new Node(new Vector3(bottomLeft.x, 0, bottomLeft.y));
faceVertices.Add(bottomLeft, bottomLeftNode);
}
if (!faceVertices.TryGetValue(topRight, out topRightNode))
{
topRightNode = new Node(new Vector3(topRight.x, 0, topRight.y));
faceVertices.Add(topRight, topRightNode);
}
if (!faceVertices.TryGetValue(bottomRight, out bottomRightNode))
{
bottomRightNode = new Node(new Vector3(bottomRight.x, 0, bottomRight.y));
faceVertices.Add(bottomRight, bottomRightNode);
}
if (!faceVertices.TryGetValue(topLeft, out topLeftNode))
{
topLeftNode = new Node(new Vector3(topLeft.x, 0, topLeft.y));
faceVertices.Add(topLeft, topLeftNode);
}
List <Node> vertList = new List <Node>(
new Node[] {
bottomLeftNode, bottomRightNode, topLeftNode, topRightNode
}
);
GridNode gridNode = new GridNode(new Vector3(centerVert.x, 0, centerVert.y), ref vertList);
gridNode.ConnectVertices();
grid.AddFace(gridNode);
}
}
}
}
}
