GameMap_Blockmap

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class GameMap_Blockmap : MonoBehaviour {

    public GameObject BasicBlock;
    public Vector2 Mapsize = Vector2.zero;

    private Mesh BasicMesh, CurrentMesh;
    private Vector3 Meshsize, InstantPos;
    private int ix,iy;

    public class BlockmapClass{
        public GameObject Block;
        public int TileID;
        public int[] TopVertex;
        public int[] GroundVertex;

        public BlockmapClass(){
            Block = new GameObject("BasicBlock");
            TileID = 0;
            TopVertex = new int[4];
            GroundVertex = new int[4];
        }
    }

    public BlockmapClass[][] Blockmap;

    // Use this for initialization
    void Start () {
        CreateMap();
    }


    public void CreateMap(){
        StartCoroutine(CreateBlocks());
    }

    IEnumerator CreateBlocks(){
        BasicMesh = BasicBlock.GetComponent<MeshFilter>().sharedMesh;
        Meshsize = BasicMesh.bounds.size;
        Blockmap = new BlockmapClass[(int)Mapsize.y][];
        for(iy=0; iy<Mapsize.y; iy++){
            Blockmap[iy] = new BlockmapClass[(int)Mapsize.x];
        }
        yield return new WaitForEndOfFrame();
        for(iy=0; iy<Mapsize.y; iy++){
            for(ix=0; ix<Mapsize.x; ix++){
                Debug.Log(iy + "/" + ix);
                InstantPos.x = Mapsize.x*Meshsize.x;
                InstantPos.y = 0;
                InstantPos.z = Mapsize.y*Meshsize.z;

                Blockmap[iy][ix].Block = Instantiate(BasicBlock, InstantPos, Quaternion.Euler(Vector3.zero)) as GameObject;

                Blockmap[iy][ix].TileID = 0;

                CurrentMesh = Blockmap[iy][ix].Block.GetComponent<MeshFilter>().sharedMesh;

                Blockmap[iy][ix].TopVertex[0] = CurrentMesh.triangles[0];
                Blockmap[iy][ix].TopVertex[1] = CurrentMesh.triangles[1];
                Blockmap[iy][ix].TopVertex[2] = CurrentMesh.triangles[2];
                Blockmap[iy][ix].TopVertex[3] = CurrentMesh.triangles[3];

                Blockmap[iy][ix].GroundVertex[0] = CurrentMesh.triangles[4];
                Blockmap[iy][ix].GroundVertex[1] = CurrentMesh.triangles[5];
                Blockmap[iy][ix].GroundVertex[2] = CurrentMesh.triangles[6];
                Blockmap[iy][ix].GroundVertex[3] = CurrentMesh.triangles[7];

                Blockmap[iy][ix].Block.transform.parent = transform;
            }
            yield return new WaitForEndOfFrame();
        }
    }
}