public void GenerateMesh(int[,] map, Vector3 squareSize, string caveName, GameObject genCaveGameObj, float wallHeightWorldUnits)
{
_triangleDictionary.Clear();
_outlines.Clear();
_checkedVertices.Clear();
WallHeightWorldUnits = wallHeightWorldUnits;
// This grid will hold the resulting set of control squares showing us where to put walls
squareGrid = new SquareGrid(map, squareSize);
// These two lists make up the actual mesh
_vertices = new List <Vector3>();
_triangles = new List <int>();
for (var x = 0; x < squareGrid.Squares.GetLength(0); x++)
{
for (var y = 0; y < squareGrid.Squares.GetLength(1); y++)
{
TriangulateSquare(squareGrid.Squares[x, y]);
}
}
// The actual creation of the mesh in Unity3d Note: The mesh is actually a Unity3d Component.
// The gameObjet is created by CaveMapCreator
var mesh = new Mesh();
Cave = MeshCommon.GetChildGameObject(genCaveGameObj, caveName + "Base").GetComponent <MeshFilter>();
if (Cave == null)
{
Debug.Log("The cave object, MeshFilter could not be found");
}
else
{
Cave.mesh = mesh;
}
Walls = MeshCommon.GetChildGameObject(genCaveGameObj, caveName + "Wall").GetComponent <MeshFilter>();
if (Walls == null)
{
Debug.Log("The Wall object, MeshFilter could not be found");
}
// the mesh methods require an array and not a list
mesh.vertices = _vertices.ToArray();
mesh.triangles = _triangles.ToArray();
mesh.RecalculateNormals();
if (Cave != null)
{
Cave.mesh = mesh;
}
// We now want to apply a texture to the image as such we must generate the UV map
var tileAmount = 10;
var uvs = new Vector2[_vertices.Count];
for (var i = 0; i < _vertices.Count; i++)
{
var percentX = Mathf.InverseLerp(-map.GetLength(0) / 2.0f * squareSize.x, map.GetLength(0) / 2.0f * squareSize.x, _vertices[i].x) * tileAmount;
var percentY = Mathf.InverseLerp(-map.GetLength(0) / 2.0f * squareSize.z, map.GetLength(0) / 2.0f * squareSize.z, _vertices[i].z) * tileAmount;
uvs[i] = new Vector2(percentX, percentY);
}
mesh.uv = uvs;
// Better recalculate the normals
mesh.RecalculateNormals();
// Save the mesh as an asset at the path given in the editor menu
AssetDatabase.CreateAsset(mesh, MeshCommon.CreateUniqueMeshAssetName(caveName));
AssetDatabase.SaveAssets();
if (Is2D)
{
Generate2DColliders();
}
else
{
// Now we create the actual walls that will be seen in Unity3D game space
CreateWallMesh();
}
}
private void GenerateMap()
{
GetCaveData();
// We must set up a set of game objects to hold the cave. A parent and two children
// CaveGenerator as GameObject with no render component
// Cave with render components
// Walls with render components
CaveGenerator = MeshCommon.CreateUniqueGameObject(_caveName + "Generator", false);
Cave = MeshCommon.CreateUniqueGameObject(_caveName + "Base", true, false);
Wall = MeshCommon.CreateUniqueGameObject(_caveName + "Wall", true, false);
Ground = GameObject.CreatePrimitive(PrimitiveType.Plane);
Ground.name = _caveName + "Ground";
Ground.transform.localScale = new Vector3(WidthWorldUnits / 58, 1, HeightWorldUnits / 97);
// Ground.transform.localScale = new Vector3(WidthWorldUnits , 1, HeightWorldUnits );
Ground.transform.localPosition = new Vector3(0, -WallHeightWorldUnits, 0);
Cave.GetComponent <MeshRenderer>().material = CaveMaterial;
Wall.GetComponent <MeshRenderer>().material = WallMaterial;
Ground.GetComponent <MeshRenderer>().material = GroundMaterial;
// We will place the newly created game object, that holds our mesh at either the origin or just in front of the camera.
if (!_createAtOrigin && _cam)
{
Cave.transform.position = _cam.transform.position + _cam.transform.forward * 100.0f;
Wall.transform.position = _cam.transform.position + _cam.transform.forward * 100f;
Ground.transform.position = _cam.transform.position + _cam.transform.forward * 100.0f - new Vector3(0, WallHeightWorldUnits, 0);
CaveGenerator.transform.position = _cam.transform.position + _cam.transform.forward * 100.0f;
}
else
{
Cave.transform.position = Vector3.zero;
Wall.transform.position = Vector3.zero;
Ground.transform.position = new Vector3(0, -WallHeightWorldUnits, 0);
CaveGenerator.transform.position = Vector3.zero;
}
// Parent the Cave and walls to the Cave Generator
Cave.transform.parent = CaveGenerator.transform;
Wall.transform.parent = CaveGenerator.transform;
Ground.transform.parent = CaveGenerator.transform;
// Note that the map is created without a border it will be added later.
_map = new int[Width, Height];
// Let's fill the map with a "random set" of 1's and 0's
RandomFillMap();
// cellular automata's has a number of smoothing functions, in this example we have taken the most basic
// SmoothMap function.
for (var i = 0; i < 5; i++)
{
SmoothMap();
}
// Identify all regions and eliminate those that are too small or too big.
ProcessMap();
// We will now create a new grid that will contain the to be added border plus the generated map.
var borderedMap = new int[Width + BorderSize * 2, Height + BorderSize * 2];
for (var x = 0; x < borderedMap.GetLength(0); x++)
{
for (var y = 0; y < borderedMap.GetLength(1); y++)
{
if (x >= BorderSize && x < Width + BorderSize && y >= BorderSize && y < Height + BorderSize)
{
borderedMap[x, y] = _map[x - BorderSize, y - BorderSize];
}
else
{
borderedMap[x, y] = 1;
}
}
}
// Time to create the mesh, placing the results in the game object called Cave
; // _caveMeshCreator.GenerateMesh(borderedMap, 1, _caveName, CaveGenerator);
var scaling = new Vector3(WidthWorldUnits / borderedMap.GetLength(0), 1, HeightWorldUnits / borderedMap.GetLength(1));
_caveMeshCreator.GenerateMesh(borderedMap, scaling, _caveName, CaveGenerator, WallHeightWorldUnits);
// create the ground plane here
var newGroundMesh = GenerateGroundPlane(Ground, borderedMap, scaling, _caveName, WallHeightWorldUnits);
MeshCommon.GetChildGameObject(CaveGenerator, _caveName + "Ground").GetComponent <MeshFilter>().mesh = newGroundMesh;
// Save the creation to a prefab
PrefabUtility.CreatePrefab("Assets/PreFabs/Cave.prefab", CaveGenerator, ReplacePrefabOptions.Default);
}
