Unity - Simple Mesh Generation

MeshGenerator.cs

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

[RequireComponent(typeof(MeshFilter), typeof(MeshRenderer), typeof(MeshCollider))]
public class MeshGeneration : MonoBehaviour {

    // Use this for initialization
    void Awake () {
        CreateMesh();
    }
	
    // Create a simple mesh
    public void CreateMesh() {
        Mesh mesh = new Mesh();

        List<Vector3> verts = new List<Vector3>();
        List<int> tris = new List<int>();
        List<Vector2> uvs = new List<Vector2>();

        for (int x = 0; x < 16; x++) {
            for (int y = 0; y < 16; y++) {
                CreateTile(x, y, verts, tris, uvs);
            }
        }

        mesh.vertices = verts.ToArray();
        mesh.triangles = tris.ToArray();
        mesh.uv = uvs.ToArray();
        mesh.RecalculateBounds();
        mesh.RecalculateNormals();

        gameObject.GetComponent<MeshFilter>().sharedMesh = mesh;
        gameObject.GetComponent<MeshCollider>().sharedMesh = mesh;

    }

    // Create one tile
    public void CreateTile(int x, int y, List<Vector3> verts, List<int> tris, List<Vector2> uvs) {
        int i = verts.Count;

        verts.AddRange(new Vector3[] {
            new Vector3(x - 0.5f, 0, y - 0.5f),
            new Vector3(x + 0.5f, 0, y - 0.5f),
            new Vector3(x + 0.5f, 0, y + 0.5f),
            new Vector3(x - 0.5f, 0, y + 0.5f),
        });

        tris.AddRange(new int[] {
            i + 1, i + 0, i + 2,
            i + 0, i + 3, i + 2,
        });

        uvs.AddRange(new Vector2[] {
            new Vector2(0, 0),
            new Vector2(1, 0),
            new Vector2(1, 1),
            new Vector2(0, 1),
        });

    }

}