using CSNetwork.GPDataType;
using System;
using System.Runtime.ConstrainedExecution;
using UnityEngine;

namespace BrewMonster.Scripts
{
    public class CECHPWorkFall : CECHPWork
    {
        protected A3DVECTOR3 m_vDirH;
        protected float m_fSpeedH;
        protected bool m_bEnterWater;
        protected int m_iFallMode;
        protected int m_nCurStage;
        protected int m_iFallType;
        protected bool m_fForceDown;

        Vector3 g_vOrigin = Vector3.zero;

        const float EC_NACCE_WATER = -5.0f;

        public static class FlyFallStage
        {
            public const int enumStageNone = 0,
            enumStageUpperAir = 1,
            enumStageLowerAir = 2,
            enumStageShallowWater = 3,
            enumStageDeepWater = 4,
            enumStageLandOn = 5;
        };

        //	Fall type
        public static class Fall_type
        {
            public const int TYPE_FREEFALL = 0,
            TYPE_FLYFALL = 1;
        };

        //	This work is do player moving ?
        // public override bool IsMoving() { return true; }
        //	Copy work data

        //	Set fall type
        public void SetFallType(int iType) { m_iFallType = iType; }
        public int GetFallType() { return m_iFallType; }

        public CECHPWorkFall(CECHPWorkMan pWorkMan) : base(Host_work_ID.WORK_FREEFALL, pWorkMan)
        {
            m_dwMask = Work_mask.MASK_FREEFALL;
            m_dwTransMask = Work_mask.MASK_STAND;

            Reset();
        }

        //	Reset work
        public override void Reset()
        {
            base.Reset();

            m_bEnterWater = false;
            m_nCurStage = FlyFallStage.enumStageNone;
            m_iFallType = Fall_type.TYPE_FREEFALL;
            m_fForceDown = false;
        }

        //	Copy work data
        public override bool CopyData(CECHPWork pWork)
        {
            if (!base.CopyData(pWork))
                return false;

            CECHPWorkFall pSrc = (CECHPWorkFall)pWork;

            m_bEnterWater = pSrc.m_bEnterWater;
            m_nCurStage = pSrc.m_nCurStage;
            m_iFallType = pSrc.m_iFallType;
            m_fForceDown = pSrc.m_fForceDown;

            return true;
        }

        //	On first tick
        protected override void OnFirstTick()
        {
            m_pHost.m_iMoveEnv = (int)MoveEnvironment.MOVEENV_GROUND;
            m_pHost.m_iMoveMode = (int)MoveMode.MOVE_FREEFALL;

            m_vDirH = m_pHost.m_vVelocity;
            m_vDirH.y = 0.0f;
            m_fSpeedH = m_vDirH.Normalize();

            if (m_fSpeedH > m_pHost.GetGroundSpeed())
                m_fSpeedH = m_pHost.GetGroundSpeed();

            //	Clear N
            m_pHost.m_CDRInfo.vTPNormal = new A3DVECTOR3(0);
        }

        //	Work is cancel
        public override void Cancel()
        {
            m_pHost.m_CDRInfo.vAbsVelocity = new A3DVECTOR3(0);
            if (m_pHost.m_CDRInfo.vTPNormal == new A3DVECTOR3(0))
            {
                m_pHost.m_CDRInfo.fYVel = 0.0f;
            }
            base.Cancel();
        }

        //	Tick routine
        public override bool Tick(float dwDeltaTime)
        {
            base.Tick(dwDeltaTime);
            var m_pEquipPack = m_pHost.GetInventory(InventoryConst.IVTRTYPE_EQUIPPACK);
            if (m_pEquipPack.GetItem(InventoryConst.EQUIPIVTR_FLYSWORD, false) == null)
                m_iFallMode = (int)GPMoveMode.GP_MOVE_FALL;
            else
                m_iFallMode = (int)GPMoveMode.GP_MOVE_FLYFALL;

            if (m_pHost.IsDead())
                m_iFallMode |= (int)GPMoveMode.GP_MOVE_DEAD;

            if (!m_pHost.IsRooting())
            {
                float fDeltaTime = dwDeltaTime;

                if (m_pHost.m_iMoveEnv == (int)MoveEnvironment.MOVEENV_GROUND ||
                    m_pHost.m_iMoveEnv == (int)MoveEnvironment.MOVEENV_AIR)
                {
                    if (m_iFallType == Fall_type.TYPE_FLYFALL)
                        Fall_Air(fDeltaTime);
                    else
                        FreeFall_Air(fDeltaTime);
                }
                else    //	m_pHost.m_iMoveEnv == CECPlayer::MOVEENV_WATER
                {
                    if (m_iFallType == Fall_type.TYPE_FLYFALL)
                        Fall_Water(fDeltaTime);
                    else
                        FreeFall_Water(fDeltaTime);
                }
            }

            return true;
        }

        //	Free fall in air
        public bool Fall_Air(float fDeltaTime)
        {
            A3DVECTOR3 vCurPos = m_pHost.GetPos();
            //	A3DVECTOR3 vCurVel = m_pHost.m_vVelocity;
            CDR_INFO cdr = m_pHost.m_CDRInfo;

            bool bWorkEnd = false;

            if (m_pHost.m_GndInfo.bOnGround)
            {
                bWorkEnd = true;
                //if (m_pHost.UsingWing())
                if (m_pHost.GetWingType() == enumWingType.WINGTYPE_WING)
                    m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_LANDON, false);
                else
                    m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_LANDON_SWORD, false);
            }
            else
            {
                vCurPos = m_pHost.m_MoveCtrl.GroundMove(m_vDirH, m_fSpeedH, fDeltaTime);

                if (m_pHost.m_MoveCtrl.MoveBlocked() >= 3)
                {
                    bWorkEnd = true;
                    //if (m_pHost.UsingWing())
                    if (m_pHost.GetWingType() == enumWingType.WINGTYPE_WING)
                        m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_LANDON, false);
                    else
                        m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_LANDON_SWORD, false);
                }
                else
                {
                    float fHei = vCurPos.y - m_pHost.m_GndInfo.fGndHei;

                    if (fHei > 25f)
                    {
                        if (m_nCurStage == FlyFallStage.enumStageNone)
                        {
                            m_nCurStage = FlyFallStage.enumStageUpperAir;
                            //if (m_pHost.UsingWing())
                            if (m_pHost.GetWingType() == enumWingType.WINGTYPE_WING)
                                m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_FLYDOWN, false);
                            else
                                m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_FLYDOWN_SWORD_HIGH, false);
                        }
                    }
                    else if (fHei > 20f)
                    {
                        if (m_nCurStage == FlyFallStage.enumStageNone)
                        {
                            m_nCurStage = FlyFallStage.enumStageLowerAir;
                            //if (m_pHost.UsingWing())
                            if (m_pHost.GetWingType() == enumWingType.WINGTYPE_WING)
                                m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_FLYDOWN_WING_LOW, false);
                            else
                                m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_FLYDOWN_SWORD_LOW, false);
                        }
                    }
                    else if (fHei > 3.0f)
                    {
                        if (m_nCurStage == FlyFallStage.enumStageNone
                         || m_nCurStage == FlyFallStage.enumStageUpperAir)
                        {
                            m_nCurStage = FlyFallStage.enumStageLowerAir;
                            //if (m_pHost.UsingWing())
                            if (m_pHost.GetWingType() == enumWingType.WINGTYPE_WING)
                                m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_FLYDOWN_WING_LOW, false);
                            else
                                m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_FLYDOWN_SWORD_LOW, false);
                        }
                    }
                    else
                    {
                        if (m_nCurStage != FlyFallStage.enumStageLandOn)
                        {
                            m_nCurStage = FlyFallStage.enumStageLandOn;
                            //if (m_pHost.UsingWing())
                            if (m_pHost.GetWingType() == enumWingType.WINGTYPE_WING)
                                m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_LANDON, false);
                            else
                                m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_LANDON_SWORD, false);
                        }
                    }
                }

                m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));
            }

            if (bWorkEnd)
            {
                Finish();
                m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));

                float fSpeed = EC_Utility.ToVector3(cdr.vAbsVelocity).magnitude;
                if (Math.Abs(fSpeed - 0) < float.Epsilon)
                    fSpeed = m_pHost.GetFlySpeed();

                m_pHost.m_MoveCtrl.SendStopMoveCmd(EC_Utility.ToVector3(vCurPos), fSpeed, m_iFallMode);
                m_pHost.m_vVelocity.Clear();
                return true;
            }
            else
            {
                m_pHost.m_MoveCtrl.SendMoveCmd(vCurPos, 2, EC_Utility.ToA3DVECTOR3(g_vOrigin), (cdr.vAbsVelocity), m_iFallMode);
            }

            return true;
        }

        //	Free fall in air
        public bool FreeFall_Air(float fDeltaTime)
        {
            A3DVECTOR3 vCurPos = m_pHost.GetPos();
            //	A3DVECTOR3 vCurVel = m_pHost.m_vVelocity;
            CDR_INFO cdr = m_pHost.m_CDRInfo;

            if (m_pHost.m_GndInfo.bOnGround)
            {
                Finish();
                m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));

                float fSpeed = EC_Utility.ToVector3(cdr.vAbsVelocity).magnitude;
                if (Math.Abs(fSpeed - 0) < float.Epsilon)
                    fSpeed = m_pHost.GetFlySpeed();

                m_pHost.m_MoveCtrl.SendStopMoveCmd(EC_Utility.ToVector3(vCurPos), fSpeed, m_iFallMode);
                m_pHost.m_vVelocity.Clear();
            }
            else
            {
                vCurPos = m_pHost.m_MoveCtrl.GroundMove(m_vDirH, m_fSpeedH, fDeltaTime);

                //	If player is blocked, add disturb speed at random direction
                if (m_pHost.m_MoveCtrl.MoveBlocked() >= 3)
                {
                    cdr.fYVel = 0.0f;
                    Finish();

                    m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));
                    m_pHost.m_MoveCtrl.SendStopMoveCmd(EC_Utility.ToVector3(vCurPos), 5.0f, m_iFallMode);
                }
                /*	{
                        m_fSpeedH = 3.0f;
                        m_vDirH = glb_RandomVectorH();
                    }
                    else
                    {
                        m_fSpeedH = 0.0f;
                        m_vDirH.Clear();
                    }	*/

                m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));
                m_pHost.m_MoveCtrl.SendMoveCmd(vCurPos, 2, EC_Utility.ToA3DVECTOR3(g_vOrigin), (cdr.vAbsVelocity), m_iFallMode);

                m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_JUMP_LOOP, false);
            }

            return true;
        }

        private float A3d_Magnitude(A3DVECTOR3 v)
        {
            return Mathf.Sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
        }

        //	Finish
        public void Finish()
        {
            m_bFinished = true;
            m_pHost.m_CDRInfo.vAbsVelocity = new A3DVECTOR3(0);
            //	m_pHost.m_CDRInfo.fYVel = 0.0f;

            //if (m_iFallType == Fall_type.TYPE_FLYFALL)
            //    m_pHost.ShowWing(false);
        }

        //	Free fall in water
        bool Fall_Water(float fDeltaTime)
        {
            A3DVECTOR3 vCurPos = m_pHost.GetPos();
            A3DVECTOR3 vCurVel = m_pHost.m_vVelocity;
            float fGndHei = m_pHost.m_GndInfo.fGndHei;

            if (!m_bEnterWater)
            {
                m_bEnterWater = true;
                vCurVel = m_pHost.m_CDRInfo.vAbsVelocity;
                float fWaterHei = m_pHost.m_GndInfo.fWaterHei;
                if (fWaterHei - fGndHei > 1.5f)
                    m_nCurStage = FlyFallStage.enumStageDeepWater;
                else
                    m_nCurStage = FlyFallStage.enumStageShallowWater;
            }

            float fSpeed1 = vCurVel.Normalize();
            float na = -fSpeed1 * 0.7f + EC_NACCE_WATER * 4.0f;
            float fSpeed2 = fSpeed1 + na * fDeltaTime;
            if (fSpeed2 * fSpeed1 < 0.0f)
                fSpeed2 = 0.0f;

            if (m_fForceDown)
            {
                //	Note: When speed=0 we should check whether a special case: EstimateMoveEnv find
                //		we are in water but we stop at a underwater position which is very close
                //		to water surface.
                //	if (vCurPos.y < m_pHost.m_GndInfo.fWaterHei && 
                //		m_pHost.m_GndInfo.fWaterHei - m_pHost.m_GndInfo.fGndHei > m_pHost.m_MoveConst.fShoreDepth &&
                if (m_pHost.CheckWaterMoveEnv(vCurPos, m_pHost.m_GndInfo.fWaterHei, m_pHost.m_GndInfo.fGndHei) &&
                    m_pHost.m_GndInfo.fWaterHei - vCurPos.y < m_pHost.m_MoveConst.fShoreDepth)
                {
                    vCurPos = m_pHost.m_MoveCtrl.GroundMove(m_vDirH, m_fSpeedH, fDeltaTime, -5.0f);
                    m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));

                    if (m_pHost.m_MoveCtrl.MoveBlocked() >= 3)
                    {
                        //	Fall on ground
                        Finish();
                        m_pHost.m_MoveCtrl.SendStopMoveCmd(EC_Utility.ToVector3(vCurPos), m_pHost.m_vVelocity.Magnitude(), (int)GPMoveMode.GP_MOVE_WATER | m_iFallMode);
                        m_pHost.m_vVelocity.Clear();
                    }

                    return true;
                }
            }

            if (Math.Abs(fSpeed2 - 0f) > float.Epsilon)
            {
                A3DVECTOR3 vOldPos = vCurPos;
                vCurPos = m_pHost.m_MoveCtrl.AirWaterMove(vCurVel, fSpeed2, fDeltaTime, false, false);
                vCurVel *= fSpeed2;

                if (m_nCurStage == FlyFallStage.enumStageShallowWater)
                {
                    if (vCurPos.y - fGndHei < 1.0f)
                    {
                        //if (m_pHost.UsingWing())
                        if (m_pHost.GetWingType() == enumWingType.WINGTYPE_WING)
                            m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_LANDON, false);
                        else
                            m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_LANDON_SWORD, false);

                        m_nCurStage = FlyFallStage.enumStageLandOn;
                    }
                }
                else if (m_nCurStage == FlyFallStage.enumStageDeepWater)
                {
                    if (vCurVel.y > -9.0f)
                        m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_HANGINWATER, false);
                }

                if (m_pHost.m_MoveCtrl.MoveBlocked() >= 3 ||
                    vCurPos.y - m_pHost.m_MoveConst.fMinWaterHei <= fGndHei)
                {
                    //	Fall on ground
                    Finish();

                    m_pHost.m_MoveCtrl.SendStopMoveCmd(EC_Utility.ToVector3(vCurPos), m_pHost.m_vVelocity.Magnitude(), (int)GPMoveMode.GP_MOVE_WATER | m_iFallMode);

                    m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));
                    m_pHost.m_vVelocity.Clear();
                }
                else
                {
                    m_pHost.m_MoveCtrl.SendMoveCmd(vCurPos, 2, EC_Utility.ToA3DVECTOR3(g_vOrigin), vCurVel, (int)GPMoveMode.GP_MOVE_WATER | m_iFallMode);
                    m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));
                    m_pHost.m_vVelocity = vCurVel;
                }

                //	If moving too small
                if (A3d_Magnitude(vCurPos - vOldPos) < 0.001f)
                    m_fForceDown = true;
            }
            else
            {
                Finish();
                m_pHost.m_MoveCtrl.SendStopMoveCmd(EC_Utility.ToVector3(vCurPos), fSpeed1, (int)GPMoveMode.GP_MOVE_WATER | m_iFallMode);

                m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));
                m_pHost.m_vVelocity.Clear();
            }

            return true;
        }

        //	Free fall in water
        bool FreeFall_Water(float fDeltaTime)
        {
            A3DVECTOR3 vCurPos = m_pHost.GetPos();
            A3DVECTOR3 vCurVel = m_pHost.m_vVelocity;
            float fGndHei = m_pHost.m_GndInfo.fGndHei;

            if (!m_bEnterWater)
            {
                m_bEnterWater = true;
                vCurVel = m_pHost.m_CDRInfo.vAbsVelocity;
                float fWaterHei = m_pHost.m_GndInfo.fWaterHei;
                if (fWaterHei - fGndHei > 1.5f)
                    m_nCurStage = FlyFallStage.enumStageDeepWater;
                else
                    m_nCurStage = FlyFallStage.enumStageShallowWater;
            }

            float fSpeed1 = vCurVel.Normalize();
            float na = EC_NACCE_WATER * 4.0f;
            float fSpeed2 = fSpeed1 + na * fDeltaTime;
            if (fSpeed2 * fSpeed1 < 0.0f)
                fSpeed2 = 0.0f;

            if (Math.Abs(fSpeed2 - 0f) > float.Epsilon)
            {
                vCurPos = m_pHost.m_MoveCtrl.AirWaterMove(vCurVel, fSpeed2, fDeltaTime, false, false);
                vCurVel *= fSpeed2;

                if (m_pHost.m_MoveCtrl.MoveBlocked() >= 3 ||
                    vCurPos.y - m_pHost.m_MoveConst.fMinWaterHei <= fGndHei)
                {
                    //	Fall on ground
                    Finish();

                    m_pHost.m_MoveCtrl.SendStopMoveCmd(EC_Utility.ToVector3(vCurPos), m_pHost.m_vVelocity.Magnitude(), (int)GPMoveMode.GP_MOVE_WATER | m_iFallMode);

                    m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));
                    m_pHost.m_vVelocity.Clear();
                }
                else
                {
                    m_pHost.m_MoveCtrl.SendMoveCmd(vCurPos, 2, EC_Utility.ToA3DVECTOR3(g_vOrigin), vCurVel, (int)GPMoveMode.GP_MOVE_WATER | m_iFallMode);
                    m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));
                    m_pHost.m_vVelocity = vCurVel;

                    if (m_nCurStage == FlyFallStage.enumStageDeepWater)
                        m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_HANGINWATER, false);
                    else
                        m_pHost.PlayAction((int)PLAYER_ACTION_TYPE.ACT_JUMP_LOOP, false);
                }
            }
            else
            {
                Finish();
                m_pHost.m_MoveCtrl.SendStopMoveCmd(EC_Utility.ToVector3(vCurPos), fSpeed1, (int)GPMoveMode.GP_MOVE_WATER | m_iFallMode);

                m_pHost.SetPos(EC_Utility.ToVector3(vCurPos));
                m_pHost.m_vVelocity.Clear();
            }

            return true;
        }
    }
}