I am following this tut and I cant figure out were this error is coming from.
hears the tut
http://studentgamedev.blogspot.no/2013/08/VoxelTutP2.html
the error
NullReferenceException
UnityEngine.Mesh.Clear () (at C:/BuildAgent/work/d3d49558e4d408f4/artifacts/EditorGenerated/Graphics.cs:609)
PolygonGenerator.UpdateMesh () (at Assets/PolygonGenerator.cs:84)
PolygonGenerator.Start () (at Assets/PolygonGenerator.cs:33)
![alt text][1]
hears the script
using UnityEngine;
using System.Collections.Generic;
public class PolygonGenerator : MonoBehaviour
{
// This first list contains every vertex of the mesh that we are going to render
public List newVertices = new List();
// The triangles tell Unity how to build each section of the mesh joining
// the vertices
public List newTriangles = new List();
// The UV list is unimportant right now but it tells Unity how the texture is
// aligned on each polygon
public List newUV = new List();
// A mesh is made up of the vertices, triangles and UVs we are going to define,
// after we make them up we'll save them as this mesh
private Mesh mesh;
private float tUnit = 0.25f;
private Vector2 tStone = new Vector2 (0, 0);
private Vector2 tGrass = new Vector2 (0, 1);
private int squareCount;
public byte[,] blocks;
void Start () {
GenTerrain();
BuildMesh();
UpdateMesh();
mesh = GetComponent ().mesh;
float x = transform.position.x;
float y = transform.position.y;
float z = transform.position.z;
newVertices.Add( new Vector3 (x , y , z ));
newVertices.Add( new Vector3 (x + 1 , y , z ));
newVertices.Add( new Vector3 (x + 1 , y-1 , z ));
newVertices.Add( new Vector3 (x , y-1 , z ));
newTriangles.Add(0);
newTriangles.Add(1);
newTriangles.Add(3);
newTriangles.Add(1);
newTriangles.Add(2);
newTriangles.Add(3);
newUV.Add(new Vector2 (tUnit * tStone.x, tUnit * tStone.y + tUnit));
newUV.Add(new Vector2 (tUnit * tStone.x + tUnit, tUnit * tStone.y + tUnit));
newUV.Add(new Vector2 (tUnit * tStone.x + tUnit, tUnit * tStone.y));
newUV.Add(new Vector2 (tUnit * tStone.x, tUnit * tStone.y));
}
void GenSquare(int x, int y, Vector2 texture){
newVertices.Add( new Vector3 (x , y , 0 ));
newVertices.Add( new Vector3 (x + 1 , y , 0 ));
newVertices.Add( new Vector3 (x + 1 , y-1 , 0 ));
newVertices.Add( new Vector3 (x , y-1 , 0 ));
newTriangles.Add(squareCount*4);
newTriangles.Add((squareCount*4)+1);
newTriangles.Add((squareCount*4)+3);
newTriangles.Add((squareCount*4)+1);
newTriangles.Add((squareCount*4)+2);
newTriangles.Add((squareCount*4)+3);
newUV.Add(new Vector2 (tUnit * texture.x, tUnit * texture.y + tUnit));
newUV.Add(new Vector2 (tUnit*texture.x+tUnit, tUnit*texture.y+tUnit));
newUV.Add(new Vector2 (tUnit * texture.x + tUnit, tUnit * texture.y));
newUV.Add(new Vector2 (tUnit * texture.x, tUnit * texture.y));
squareCount++;
}
void UpdateMesh () {
mesh.Clear ();
mesh.vertices = newVertices.ToArray();
mesh.triangles = newTriangles.ToArray();
mesh.uv = newUV.ToArray();
mesh.Optimize ();
mesh.RecalculateNormals ();
squareCount=0;
newVertices.Clear();
newTriangles.Clear();
newUV.Clear();
}
void GenTerrain(){
blocks=new byte[10,10];
for(int px=0;px
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