using UnityEngine;
using System.Collections;

public class Constructible : MonoBehaviour {
    public bool _build;
    public float buildRate;
    private Mesh mesh;
    private Vector3[] originalVerts;
    public bool flattenX;
    public bool flattenY;
    public bool flattenZ;
    // Use this for initialization
    void Start() {
        mesh = GetComponent<MeshFilter>().mesh;
        originalVerts = GetComponent<MeshFilter>().sharedMesh.vertices;
        FlattenMesh();
    }

    // Update is called once per frame
    void Update() {
        if (_build) {
            Vector3[] verts = mesh.vertices;
            for (int i = 0; i < verts.Length; i++) {
                verts[i] = new Vector3(
                    verts[i].x + (verts[i].x > originalVerts[i].x - buildRate ? -buildRate :
                    (verts[i].x < originalVerts[i].x + buildRate ? buildRate : 0)),
                    verts[i].y + (verts[i].y > originalVerts[i].y - buildRate ? -buildRate :
                    (verts[i].y < originalVerts[i].y + buildRate ? buildRate : 0)),
                    verts[i].z + (verts[i].z > originalVerts[i].z - buildRate ? -buildRate :
                    (verts[i].z < originalVerts[i].z + buildRate ? buildRate : 0)));
            }
            mesh.vertices = verts;
            mesh.RecalculateBounds();
            mesh.RecalculateNormals();
        }
    }
    private void FlattenMesh() {
        Vector3[] verts = mesh.vertices;
        for (int i = 0; i < verts.Length; i++) {
            verts[i] = new Vector3(flattenX ? 0 : verts[i].x, flattenY ? 0 : verts[i].y, flattenZ ? 0 : verts[i].z);
        }
        mesh.vertices = verts;
        mesh.RecalculateBounds();
        mesh.RecalculateNormals();
    }
}