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

public class AI : MonoBehaviour
{
	public enum AIType
	{
		None,
		Manual,
		Hero,
		Soldier,
		Station,
		Door,
		Remote,
		Show,
	}

	protected BattleController battleController;
	protected Map map;
	protected BattleObject _owner;
	protected Player player;
	
	protected float lastCheckTime = 0;
	protected float checkTimeInterval = 0.5f;

	protected bool sendDeathHold = false;
	protected float lastSendDeathTime = 0f;

	public void init(BattleController battleController)
	{
		this.battleController = battleController;
		this.map = battleController.GetMap();
	}

	// Use this for initialization
	protected virtual void Start ()
	{
		_owner = GetComponent<BattleObject>();
		if(battleController.isReplay)
		{
			enabled = false;
		}
	}

	public virtual void SetPlayer(Player player)
	{
		this.player = player;
	}

	public virtual Player GetPlayer()
	{
		return player;
	}

	public bool CanSendMessage()
	{
		if(player == null)
			return false;

		if(!battleController.IsAITaker() || battleController.isGameOver || !battleController.isBattleStart || _owner.IsDead())
		{
			return false;
		}
		else
		{
			return true;
		}

		if(player.isMe)
			return true;

		return false;
	}

	protected virtual bool CheckDead()
	{
		if(sendDeathHold && GameTime.time-lastSendDeathTime < 5f)
			return true;

		if(!sendDeathHold || GameTime.time-lastSendDeathTime>5f)//wait 5s to get response
		{
			if(_owner.hp == 0)
			{
				sendDeathHold = true;
				lastSendDeathTime = GameTime.time;
				battleController.GetMessageManager().Dead(_owner, _owner.lastShooterId, _owner.lastShooterCraftId);
				return true;
			}
		}

		return false;
	}

	protected virtual void FindTarget()
	{
		BattleObject nearestCraft = null;
		float nearestDistance = _owner.viewRange;
		List<BattleObject> list = map.GetBattleObjectByRange(_owner.position, _owner.viewRange, TeamUtil.GetOpponentTeam(_owner.team));
		for (int i=0; i<list.Count; i++)
		{
			BattleObject battleObj = list[i];
			if(!battleObj.CanShoot() || battleObj.overwhelming)
				continue;

			float distance = NumberUtil.distanceVector3(_owner.position, battleObj.position);
			if(distance < nearestDistance)
			{
				nearestDistance = distance;
				nearestCraft = battleObj;
			}
		}
		_owner.target = nearestCraft;
	}

	protected virtual void FindTargetAllMap()
	{
		BattleObject nearestCraft = null;
		float nearestDistance = float.MaxValue;
		List<BattleObject> list = map.GetBattleObjectByRange(_owner.position, nearestDistance, TeamUtil.GetOpponentTeam(_owner.team));
		for (int i=0; i<list.Count; i++)
		{
			BattleObject battleObj = list[i];
			if(!battleObj.CanShoot() || battleObj.overwhelming)
				continue;
			
			float distance = NumberUtil.distanceVector3(_owner.position, battleObj.position);
			if(distance < nearestDistance)
			{
				nearestDistance = distance;
				nearestCraft = battleObj;
			}
		}
		_owner.target = nearestCraft;
	}

}