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

public class LogicBattleFieldStateExplore : LogicBattleFieldState
{
    float changeCamDist = 20;
    bool switchCam = false;
    
    public static LogicBattleFieldStateExplore Creator(LogicBattleField field)
    {
        return new LogicBattleFieldStateExplore(field);
    }
    
    public LogicBattleFieldStateExplore(LogicBattleField field) 
        : base (field, LogicBattleFieldStateType.Explore)
    {
    }

    public override void OnEnter()
    {
        mField.RemoveMonsters();
        mField.SetReadyPointForExplore();
        var mainRoleFighter = mField.Battle.FighterMgr.GetMainRole();
        BattleCamera.Instance.SetExploreCameraTarget(mainRoleFighter);
        mField.IsExploreMode = true;
        mField.Battle.GetReadyForTransfer();
        mField.Battle.GoToExploreTransferPoint();
        EnterExploreMode();
    }

    public override void OnLeave()
    {
        ExitExploreMode();
    }

    public override void Update(float deltaTime)
    {
        if (mField.Battle.IsExploreMode == false)
        {
            ChangeState(LogicBattleFieldStateType.End);
            return;
        }
        mField.Battle.FighterMgr.FixedUpdate(deltaTime);
        mField.Battle.BattleScene.UpdateSceneTree(mField.TeamFighters[0].Position);
    }

    public override void OnDataChanged()
    {
        
    }

    private void EnterExploreMode()
    {
        EventMgr.AddEventListener<Vector2>(ECoreEventType.EID_JOYSTICK_DIRECTION, OnJoystickDirection);
        for (int i = 0; i < mField.Battle.FighterMgr.TeamPetFighters.Count; i++)
        {
            var petFighter = mField.Battle.FighterMgr.TeamPetFighters[i];
            petFighter.Ctrl.IsVisible = false;
        }
    }

    private void ExitExploreMode()
    {
        EventMgr.RemoveEventListener<Vector2>(ECoreEventType.EID_JOYSTICK_DIRECTION, OnJoystickDirection);
        for (int i = 0; i < mField.Battle.FighterMgr.TeamPetFighters.Count; i++)
        {
            var petFighter = mField.Battle.FighterMgr.TeamPetFighters[i];
            petFighter.Ctrl.IsVisible = true;
        }

        mField.Result = FightingResult.Peace;
    }
    
    private Vector2 _lastJoystickDirection = Vector2.zero;
    private void OnJoystickDirection(CoreEvent<Vector2> eventData)
    {
        var joystaticDirection = eventData.Data;
        if (joystaticDirection == Vector2.zero && _lastJoystickDirection == joystaticDirection)
        {
            return;
        }
        _lastJoystickDirection = joystaticDirection;
        var mainRoleFighter = mField.Battle.FighterMgr.GetMainRole();
        Vector3 moveDirection = Vector3.forward * joystaticDirection.y + Vector3.right * joystaticDirection.x;
        mainRoleFighter.MoveInDirection(moveDirection);

        List<Fighter> followHeros = new();
        List<Fighter> heros = mField.Battle.FighterMgr.TeamHeroFighters;
        for (int idx = 0; idx < heros.Count; idx++)
        {
            var hero = heros[idx];
            if (hero.IsMainRole == false)
            {
                followHeros.Add(hero);
            }
        }

        for (int i = 0; i < followHeros.Count; i++)
        {
            var hero = followHeros[i];
            var followDistance = (i + 1) * 1.0f;
            var desiredPosition = mainRoleFighter.Ctrl.transform.position +
                                  mainRoleFighter.Ctrl.transform.rotation * new Vector3(0, 0, -followDistance);
            var followDirection = desiredPosition - hero.Position;
            hero.FollowInDirection(followDirection);
        }
    }
}