using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class FloorManager : MonoBehaviour {
	public Transform[] m_aFloorParts;
	public float m_fFloorStartZ;
	public float m_fFloorEndZ;
	public float m_fMovementSpeed;
	void Start () {
		float fZpos = 0.0f;
		float fFloorLength = Mathf.Abs(m_fFloorStartZ) + Mathf.Abs(m_fFloorEndZ);
		Debug.Log("Floor Length is: " + fFloorLength.ToString());

		while(fZpos > -fFloorLength) {
			SpawnNewFloor(fZpos);
			fZpos -= 5.0f;
		}
	}
	public void SpawnNewFloor(float fZOffset) {
		Debug.Log(fZOffset);
		Transform tFloorT = Instantiate(
												m_aFloorParts[Random.Range(0, m_aFloorParts.Length - 1)],
												new Vector3(0.0f, 0.0f, m_fFloorStartZ + fZOffset),
												Quaternion.identity);
		if( null == tFloorT){
			Debug.LogError("Unable to spawn!");
			return;
		}
		ScrollingItem gcFloorPart = tFloorT.GetComponent<ScrollingItem>();
		if(null == gcFloorPart){
			Debug.LogError("Prefab doesn't have a Scrolling Item component.");
			return;
		}
		gcFloorPart.m_fEndZ = m_fFloorEndZ;
		gcFloorPart.m_fStartZ = m_fFloorStartZ + fZOffset;
		gcFloorPart.m_fMovementSpeed = m_fMovementSpeed;

	}

	// Update is called once per frame
	void Update () {

	}
}