public void buildMesh()
    {
        int numTiles = sizeX * sizeZ;
        int numTris =  numTiles * 2;
        int vertSizeX = sizeX + 1;
        int vertSizeZ = sizeZ + 1;
        int numVerts = vertSizeX * vertSizeZ;

        Vector3[] vertices = new Vector3[numVerts]; // For each corner
        Vector3[] normals = new Vector3[numVerts]; //  For lighting iirc
        Vector2[] uv = new Vector2[numVerts]; // For textures
        int[] tris = new int[numTris * 3]; // The vertices that make a  triangle


        int x, z;

        for(z = 0; z < sizeZ; z++)
        {
            for(x = 0; x < sizeX; x++)
            {
                vertices[z * vertSizeX  + x] = new Vector3(x * tileSize, 0f, z * tileSize);
                normals[z * vertSizeX + x] = Vector3.up;
                uv[z * vertSizeX + x] = new Vector2((float) x / sizeX, (float)z /sizeZ);
            }

        }

        for(z = 0; z < sizeZ; z++)
        {
            for(x = 0; x < sizeX; x++)
            {
                int squareIndex = z * sizeX + x;
                int triOffset = squareIndex * 6;

                tris[triOffset + 0] = z * vertSizeX + x +                        0;
                tris[triOffset + 1] = z * vertSizeX + x + vertSizeX +      0;
                tris[triOffset + 2] = z * vertSizeX + x + vertSizeX +      1;

                tris[triOffset + 3] = z * vertSizeX + x +                        0;
                tris[triOffset + 4] = z * vertSizeX + x + vertSizeX +      1 ;
                tris[triOffset + 5] = z * vertSizeX + x +                         1;


            }
        }

        Mesh mesh = new Mesh();
        MeshRenderer  meshRender = GetComponent<MeshRenderer>();
        MeshFilter meshFilter = GetComponent<MeshFilter>();
        MeshCollider meshCollider = GetComponent<MeshCollider>();



        mesh.vertices = vertices; // Set the mesh's vertices to what we made
        mesh.triangles = tris; // Set the triangles to "       ".
        mesh.normals = normals; // set the normals  to "    ".
        mesh.uv =  uv;

        meshFilter.mesh = mesh; // Set the mesh filter's mesh to the mesh we made

        meshCollider.sharedMesh = mesh;

        makeTexture ();
    }