コード例 #1
0
ファイル: SimulationStep2Patch.cs プロジェクト: kvakvs/TMPE
        public static bool Prefix(TrainAI __instance,
                                  VehicleInfo ___m_info,
                                  ushort vehicleID,
                                  ref Vehicle vehicleData,
                                  ref Vehicle.Frame frameData,
                                  ushort leaderID,
                                  ref Vehicle leaderData,
                                  int lodPhysics)
        {
            bool        reversed       = (leaderData.m_flags & Vehicle.Flags.Reversed) != 0;
            ushort      frontVehicleId = (!reversed) ? vehicleData.m_leadingVehicle : vehicleData.m_trailingVehicle;
            VehicleInfo vehicleInfo    = leaderID != vehicleID ? leaderData.Info : ___m_info;
            TrainAI     trainAi        = vehicleInfo.m_vehicleAI as TrainAI;

            if (frontVehicleId != 0)
            {
                frameData.m_position += frameData.m_velocity * 0.4f;
            }
            else
            {
                frameData.m_position += frameData.m_velocity * 0.5f;
            }

            frameData.m_swayPosition += frameData.m_swayVelocity * 0.5f;

            Vector3 posBeforeWheelRot = frameData.m_position;
            Vector3 posAfterWheelRot  = frameData.m_position;
            Vector3 wheelBaseRot      = frameData.m_rotation
                                        * new Vector3(0f, 0f, ___m_info.m_generatedInfo.m_wheelBase * 0.5f);

            if (reversed)
            {
                posBeforeWheelRot -= wheelBaseRot;
                posAfterWheelRot  += wheelBaseRot;
            }
            else
            {
                posBeforeWheelRot += wheelBaseRot;
                posAfterWheelRot  -= wheelBaseRot;
            }

            float acceleration = ___m_info.m_acceleration;
            float braking      = ___m_info.m_braking;
            float curSpeed     = frameData.m_velocity.magnitude;

            Vector3 beforeRotToTargetPos1Diff       = (Vector3)vehicleData.m_targetPos1 - posBeforeWheelRot;
            float   beforeRotToTargetPos1DiffSqrMag = beforeRotToTargetPos1Diff.sqrMagnitude;

            Quaternion curInvRot    = Quaternion.Inverse(frameData.m_rotation);
            Vector3    curveTangent = curInvRot * frameData.m_velocity;

            Vector3 forward      = Vector3.forward;
            Vector3 targetMotion = Vector3.zero;
            float   targetSpeed  = 0f;
            float   motionFactor = 0.5f;

            if (frontVehicleId != 0)
            {
                VehicleManager vehMan = VehicleManager.instance;
                Vehicle.Frame  frontVehLastFrameData = vehMan.m_vehicles.m_buffer[frontVehicleId].GetLastFrameData();
                VehicleInfo    frontVehInfo          = vehMan.m_vehicles.m_buffer[frontVehicleId].Info;
                float          attachOffset;

                if ((vehicleData.m_flags & Vehicle.Flags.Inverted) != 0 != reversed)
                {
                    attachOffset = ___m_info.m_attachOffsetBack - (___m_info.m_generatedInfo.m_size.z * 0.5f);
                }
                else
                {
                    attachOffset = ___m_info.m_attachOffsetFront - (___m_info.m_generatedInfo.m_size.z * 0.5f);
                }

                float frontAttachOffset;

                if ((vehMan.m_vehicles.m_buffer[frontVehicleId].m_flags & Vehicle.Flags.Inverted) != 0 != reversed)
                {
                    frontAttachOffset = frontVehInfo.m_attachOffsetFront -
                                        (frontVehInfo.m_generatedInfo.m_size.z * 0.5f);
                }
                else
                {
                    frontAttachOffset =
                        (frontVehInfo.m_attachOffsetBack - (frontVehInfo.m_generatedInfo.m_size.z * 0.5f));
                }

                Vector3 posMinusAttachOffset = frameData.m_position;
                if (reversed)
                {
                    posMinusAttachOffset += frameData.m_rotation * new Vector3(0f, 0f, attachOffset);
                }
                else
                {
                    posMinusAttachOffset -= frameData.m_rotation * new Vector3(0f, 0f, attachOffset);
                }

                Vector3 frontPosPlusAttachOffset = frontVehLastFrameData.m_position;
                if (reversed)
                {
                    frontPosPlusAttachOffset -= frontVehLastFrameData.m_rotation
                                                * new Vector3(0f, 0f, frontAttachOffset);
                }
                else
                {
                    frontPosPlusAttachOffset += frontVehLastFrameData.m_rotation
                                                * new Vector3(0f, 0f, frontAttachOffset);
                }

                Vector3 frontPosMinusWheelBaseRot = frontVehLastFrameData.m_position;
                wheelBaseRot = frontVehLastFrameData.m_rotation * new Vector3(
                    0f,
                    0f,
                    frontVehInfo.m_generatedInfo.m_wheelBase * 0.5f);
                if (reversed)
                {
                    frontPosMinusWheelBaseRot += wheelBaseRot;
                }
                else
                {
                    frontPosMinusWheelBaseRot -= wheelBaseRot;
                }

                if (Vector3.Dot(
                        vehicleData.m_targetPos1 - vehicleData.m_targetPos0,
                        (Vector3)vehicleData.m_targetPos0 - posAfterWheelRot) < 0f &&
                    vehicleData.m_path != 0u &&
                    (leaderData.m_flags & Vehicle.Flags.WaitingPath) == 0)
                {
                    int someIndex = -1;
                    UpdatePathTargetPositions(
                        trainAi,
                        vehicleID,
                        ref vehicleData,
                        vehicleData.m_targetPos0,
                        posAfterWheelRot,
                        0,
                        ref leaderData,
                        ref someIndex,
                        0,
                        0,
                        Vector3.SqrMagnitude(posAfterWheelRot - (Vector3)vehicleData.m_targetPos0) + 1f,
                        1f);
                    beforeRotToTargetPos1DiffSqrMag = 0f;
                }

                float maxAttachDist = Mathf.Max(Vector3.Distance(posMinusAttachOffset,
                                                                 frontPosPlusAttachOffset),
                                                2f);
                const float ONE = 1f;
                float       maxAttachSqrDist = maxAttachDist * maxAttachDist;
                const float ONE_SQR          = ONE * ONE;
                int         i = 0;
                if (beforeRotToTargetPos1DiffSqrMag < maxAttachSqrDist)
                {
                    if (vehicleData.m_path != 0u &&
                        (leaderData.m_flags & Vehicle.Flags.WaitingPath) == 0)
                    {
                        UpdatePathTargetPositions(
                            trainAi,
                            vehicleID,
                            ref vehicleData,
                            posAfterWheelRot,
                            posBeforeWheelRot,
                            0,
                            ref leaderData,
                            ref i,
                            1,
                            2,
                            maxAttachSqrDist,
                            ONE_SQR);
                    }

                    while (i < 4)
                    {
                        vehicleData.SetTargetPos(i, vehicleData.GetTargetPos(i - 1));
                        i++;
                    }

                    beforeRotToTargetPos1Diff       = (Vector3)vehicleData.m_targetPos1 - posBeforeWheelRot;
                    beforeRotToTargetPos1DiffSqrMag = beforeRotToTargetPos1Diff.sqrMagnitude;
                }

                if (vehicleData.m_path != 0u)
                {
                    NetManager netMan         = NetManager.instance;
                    byte       pathPosIndex   = vehicleData.m_pathPositionIndex;
                    byte       lastPathOffset = vehicleData.m_lastPathOffset;
                    if (pathPosIndex == 255)
                    {
                        pathPosIndex = 0;
                    }

                    PathManager pathMan = PathManager.instance;
                    if (pathMan.m_pathUnits.m_buffer[vehicleData.m_path]
                        .GetPosition(pathPosIndex >> 1, out PathUnit.Position curPathPos))
                    {
                        netMan.m_segments.m_buffer[curPathPos.m_segment].AddTraffic(
                            Mathf.RoundToInt(___m_info.m_generatedInfo.m_size.z * 3f),
                            GetNoiseLevel(trainAi));

                        if ((pathPosIndex & 1) == 0 || lastPathOffset == 0 ||
                            (leaderData.m_flags & Vehicle.Flags.WaitingPath) != 0)
                        {
                            uint laneId = PathManager.GetLaneID(curPathPos);
                            if (laneId != 0u)
                            {
                                netMan.m_lanes.m_buffer[laneId].ReserveSpace(___m_info.m_generatedInfo.m_size.z);
                            }
                        }
                        else if (pathMan.m_pathUnits.m_buffer[vehicleData.m_path]
                                 .GetNextPosition(pathPosIndex >> 1, out PathUnit.Position nextPathPos))
                        {
                            // NON-STOCK CODE START
                            ushort transitNodeId;

                            if (curPathPos.m_offset < 128)
                            {
                                transitNodeId = netMan.m_segments.m_buffer[curPathPos.m_segment].m_startNode;
                            }
                            else
                            {
                                transitNodeId = netMan.m_segments.m_buffer[curPathPos.m_segment].m_endNode;
                            }

                            if (VehicleBehaviorManager.Instance.IsSpaceReservationAllowed(
                                    transitNodeId,
                                    curPathPos,
                                    nextPathPos))
                            {
                                // NON-STOCK CODE END
                                uint nextLaneId = PathManager.GetLaneID(nextPathPos);
                                if (nextLaneId != 0u)
                                {
                                    netMan.m_lanes.m_buffer[nextLaneId].ReserveSpace(___m_info.m_generatedInfo.m_size.z);
                                }
                            } // NON-STOCK CODE
                        }
                    }
                }

                beforeRotToTargetPos1Diff = curInvRot * beforeRotToTargetPos1Diff;
                float negTotalAttachLen =
                    -(((___m_info.m_generatedInfo.m_wheelBase +
                        frontVehInfo.m_generatedInfo.m_wheelBase) * 0.5f) + attachOffset +
                      frontAttachOffset);
                bool hasPath = false;

                if (vehicleData.m_path != 0u && (leaderData.m_flags & Vehicle.Flags.WaitingPath) == 0)
                {
                    if (Line3.Intersect(
                            posBeforeWheelRot,
                            vehicleData.m_targetPos1,
                            frontPosMinusWheelBaseRot,
                            negTotalAttachLen,
                            out float u1,
                            out float u2))
                    {
                        targetMotion = beforeRotToTargetPos1Diff
                                       * Mathf.Clamp(Mathf.Min(u1, u2) / 0.6f, 0f, 2f);
                    }
                    else
                    {
                        Line3.DistanceSqr(
                            posBeforeWheelRot,
                            vehicleData.m_targetPos1,
                            frontPosMinusWheelBaseRot,
                            out u1);
                        targetMotion = beforeRotToTargetPos1Diff * Mathf.Clamp(u1 / 0.6f, 0f, 2f);
                    }

                    hasPath = true;
                }

                if (hasPath)
                {
                    if (Vector3.Dot(
                            frontPosMinusWheelBaseRot - posBeforeWheelRot,
                            posBeforeWheelRot - posAfterWheelRot) < 0f)
                    {
                        motionFactor = 0f;
                    }
                }
                else
                {
                    float frontPosBeforeToAfterWheelRotDist = Vector3.Distance(
                        frontPosMinusWheelBaseRot,
                        posBeforeWheelRot);
                    motionFactor = 0f;
                    targetMotion = curInvRot
                                   * ((frontPosMinusWheelBaseRot - posBeforeWheelRot)
                                      * (Mathf.Max(0f, frontPosBeforeToAfterWheelRotDist - negTotalAttachLen)
                                         / Mathf.Max(1f, frontPosBeforeToAfterWheelRotDist * 0.6f)));
                }
            }
コード例 #2
0
        public void CustomSimulationStep(ushort vehicleID, ref Vehicle vehicleData, ref Vehicle.Frame frameData, ushort leaderID, ref Vehicle leaderData, int lodPhysics)
        {
#if DEBUG
            bool debug = GlobalConfig.Instance.Debug.Switches[16] && GlobalConfig.Instance.Debug.NodeId == vehicleID;
#endif

            ushort      leadingVehicle    = vehicleData.m_leadingVehicle;
            uint        currentFrameIndex = Singleton <SimulationManager> .instance.m_currentFrameIndex;
            VehicleInfo leaderInfo;
            if (leaderID != vehicleID)
            {
                leaderInfo = leaderData.Info;
            }
            else
            {
                leaderInfo = this.m_info;
            }
            TramBaseAI tramBaseAI = leaderInfo.m_vehicleAI as TramBaseAI;

            if (leadingVehicle != 0)
            {
                frameData.m_position += frameData.m_velocity * 0.4f;
            }
            else
            {
                frameData.m_position += frameData.m_velocity * 0.5f;
            }

            frameData.m_swayPosition += frameData.m_swayVelocity * 0.5f;
            Vector3 wheelBaseRot      = frameData.m_rotation * new Vector3(0f, 0f, this.m_info.m_generatedInfo.m_wheelBase * 0.5f);
            Vector3 posAfterWheelRot  = frameData.m_position + wheelBaseRot;
            Vector3 posBeforeWheelRot = frameData.m_position - wheelBaseRot;

            float acceleration = this.m_info.m_acceleration;
            float braking      = this.m_info.m_braking;
            float curSpeed     = frameData.m_velocity.magnitude;

            Vector3 afterRotToTargetPos1Diff       = (Vector3)vehicleData.m_targetPos1 - posAfterWheelRot;
            float   afterRotToTargetPos1DiffSqrMag = afterRotToTargetPos1Diff.sqrMagnitude;

            Quaternion curInvRot    = Quaternion.Inverse(frameData.m_rotation);
            Vector3    curveTangent = curInvRot * frameData.m_velocity;

#if DEBUG
            if (debug)
            {
                Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): ================================================");
                Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): leadingVehicle={leadingVehicle} frameData.m_position={frameData.m_position} frameData.m_swayPosition={frameData.m_swayPosition} wheelBaseRot={wheelBaseRot} posAfterWheelRot={posAfterWheelRot} posBeforeWheelRot={posBeforeWheelRot} acceleration={acceleration} braking={braking} curSpeed={curSpeed} afterRotToTargetPos1Diff={afterRotToTargetPos1Diff} afterRotToTargetPos1DiffSqrMag={afterRotToTargetPos1DiffSqrMag} curInvRot={curInvRot} curveTangent={curveTangent} this.m_info.m_generatedInfo.m_wheelBase={this.m_info.m_generatedInfo.m_wheelBase}");
            }
#endif

            Vector3 forward      = Vector3.forward;
            Vector3 targetMotion = Vector3.zero;
            float   targetSpeed  = 0f;
            float   motionFactor = 0.5f;
            float   turnAngle    = 0f;
            if (leadingVehicle != 0)
            {
                VehicleManager vehMan = Singleton <VehicleManager> .instance;
                Vehicle.Frame  leadingVehLastFrameData = vehMan.m_vehicles.m_buffer[(int)leadingVehicle].GetLastFrameData();
                VehicleInfo    leadingVehInfo          = vehMan.m_vehicles.m_buffer[(int)leadingVehicle].Info;

                float attachOffset;
                if ((vehicleData.m_flags & Vehicle.Flags.Inverted) != (Vehicle.Flags) 0)
                {
                    attachOffset = this.m_info.m_attachOffsetBack - this.m_info.m_generatedInfo.m_size.z * 0.5f;
                }
                else
                {
                    attachOffset = this.m_info.m_attachOffsetFront - this.m_info.m_generatedInfo.m_size.z * 0.5f;
                }

                float leadingAttachOffset;
                if ((vehMan.m_vehicles.m_buffer[(int)leadingVehicle].m_flags & Vehicle.Flags.Inverted) != (Vehicle.Flags) 0)
                {
                    leadingAttachOffset = leadingVehInfo.m_attachOffsetFront - leadingVehInfo.m_generatedInfo.m_size.z * 0.5f;
                }
                else
                {
                    leadingAttachOffset = leadingVehInfo.m_attachOffsetBack - leadingVehInfo.m_generatedInfo.m_size.z * 0.5f;
                }

                Vector3 curPosMinusRotAttachOffset    = frameData.m_position - frameData.m_rotation * new Vector3(0f, 0f, attachOffset);
                Vector3 leadingPosPlusRotAttachOffset = leadingVehLastFrameData.m_position + leadingVehLastFrameData.m_rotation * new Vector3(0f, 0f, leadingAttachOffset);

                wheelBaseRot = leadingVehLastFrameData.m_rotation * new Vector3(0f, 0f, leadingVehInfo.m_generatedInfo.m_wheelBase * 0.5f);
                Vector3 leadingPosBeforeWheelRot = leadingVehLastFrameData.m_position - wheelBaseRot;

                if (Vector3.Dot(vehicleData.m_targetPos1 - vehicleData.m_targetPos0, (Vector3)vehicleData.m_targetPos0 - posBeforeWheelRot) < 0f && vehicleData.m_path != 0u && (leaderData.m_flags & Vehicle.Flags.WaitingPath) == (Vehicle.Flags) 0)
                {
                    int someIndex = -1;
                    InvokeUpdatePathTargetPositions(tramBaseAI, vehicleID, ref vehicleData, vehicleData.m_targetPos0, posBeforeWheelRot, 0, ref leaderData, ref someIndex, 0, 0, Vector3.SqrMagnitude(posBeforeWheelRot - (Vector3)vehicleData.m_targetPos0) + 1f, 1f);
                    afterRotToTargetPos1DiffSqrMag = 0f;
                }

                float attachRotDist = Mathf.Max(Vector3.Distance(curPosMinusRotAttachOffset, leadingPosPlusRotAttachOffset), 2f);

                float one = 1f;
                float attachRotSqrDist = attachRotDist * attachRotDist;
                float oneSqr           = one * one;
                int   i = 0;
                if (afterRotToTargetPos1DiffSqrMag < attachRotSqrDist)
                {
                    if (vehicleData.m_path != 0u && (leaderData.m_flags & Vehicle.Flags.WaitingPath) == (Vehicle.Flags) 0)
                    {
                        InvokeUpdatePathTargetPositions(tramBaseAI, vehicleID, ref vehicleData, posBeforeWheelRot, posAfterWheelRot, 0, ref leaderData, ref i, 1, 2, attachRotSqrDist, oneSqr);
                    }
                    while (i < 4)
                    {
                        vehicleData.SetTargetPos(i, vehicleData.GetTargetPos(i - 1));
                        i++;
                    }
                    afterRotToTargetPos1Diff       = (Vector3)vehicleData.m_targetPos1 - posAfterWheelRot;
                    afterRotToTargetPos1DiffSqrMag = afterRotToTargetPos1Diff.sqrMagnitude;
                }
                afterRotToTargetPos1Diff = curInvRot * afterRotToTargetPos1Diff;

                float negTotalAttachLen = -((this.m_info.m_generatedInfo.m_wheelBase + leadingVehInfo.m_generatedInfo.m_wheelBase) * 0.5f + attachOffset + leadingAttachOffset);
                bool  hasPath           = false;
                if (vehicleData.m_path != 0u && (leaderData.m_flags & Vehicle.Flags.WaitingPath) == (Vehicle.Flags) 0)
                {
                    float u1;
                    float u2;
                    if (Line3.Intersect(posAfterWheelRot, vehicleData.m_targetPos1, leadingPosBeforeWheelRot, negTotalAttachLen, out u1, out u2))
                    {
                        targetMotion = afterRotToTargetPos1Diff * Mathf.Clamp(Mathf.Min(u1, u2) / 0.6f, 0f, 2f);
                    }
                    else
                    {
                        Line3.DistanceSqr(posAfterWheelRot, vehicleData.m_targetPos1, leadingPosBeforeWheelRot, out u1);
                        targetMotion = afterRotToTargetPos1Diff * Mathf.Clamp(u1 / 0.6f, 0f, 2f);
                    }
                    hasPath = true;
                }

                if (hasPath)
                {
                    if (Vector3.Dot(leadingPosBeforeWheelRot - posAfterWheelRot, posAfterWheelRot - posBeforeWheelRot) < 0f)
                    {
                        motionFactor = 0f;
                    }
                }
                else
                {
                    float leadingPosBeforeToAfterWheelRotDist = Vector3.Distance(leadingPosBeforeWheelRot, posAfterWheelRot);
                    motionFactor = 0f;
                    targetMotion = curInvRot * ((leadingPosBeforeWheelRot - posAfterWheelRot) * (Mathf.Max(0f, leadingPosBeforeToAfterWheelRotDist - negTotalAttachLen) / Mathf.Max(1f, leadingPosBeforeToAfterWheelRotDist * 0.6f)));
                }
            }
            else
            {
                float estimatedFrameDist = (curSpeed + acceleration) * (0.5f + 0.5f * (curSpeed + acceleration) / braking) + (this.m_info.m_generatedInfo.m_size.z - this.m_info.m_generatedInfo.m_wheelBase) * 0.5f;
                float maxSpeedAdd        = Mathf.Max(curSpeed + acceleration, 2f);
                float meanSpeedAdd       = Mathf.Max((estimatedFrameDist - maxSpeedAdd) / 2f, 2f);
                float maxSpeedAddSqr     = maxSpeedAdd * maxSpeedAdd;
                float meanSpeedAddSqr    = meanSpeedAdd * meanSpeedAdd;
                if (Vector3.Dot(vehicleData.m_targetPos1 - vehicleData.m_targetPos0, (Vector3)vehicleData.m_targetPos0 - posBeforeWheelRot) < 0f && vehicleData.m_path != 0u && (leaderData.m_flags & (Vehicle.Flags.WaitingPath | Vehicle.Flags.Stopped)) == (Vehicle.Flags) 0)
                {
                    int someIndex = -1;
                    InvokeUpdatePathTargetPositions(tramBaseAI, vehicleID, ref vehicleData, vehicleData.m_targetPos0, posBeforeWheelRot, leaderID, ref leaderData, ref someIndex, 0, 0, Vector3.SqrMagnitude(posBeforeWheelRot - (Vector3)vehicleData.m_targetPos0) + 1f, 1f);
                    afterRotToTargetPos1DiffSqrMag = 0f;
#if DEBUG
                    if (debug)
                    {
                        Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): dot < 0");
                    }
#endif
                }

#if DEBUG
                if (debug)
                {
                    Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): Leading vehicle is 0. vehicleData.m_targetPos0={vehicleData.m_targetPos0} vehicleData.m_targetPos1={vehicleData.m_targetPos1} posBeforeWheelRot={posBeforeWheelRot} posBeforeWheelRot={posAfterWheelRot} estimatedFrameDist={estimatedFrameDist} maxSpeedAdd={maxSpeedAdd} meanSpeedAdd={meanSpeedAdd} maxSpeedAddSqr={maxSpeedAddSqr} meanSpeedAddSqr={meanSpeedAddSqr} afterRotToTargetPos1DiffSqrMag={afterRotToTargetPos1DiffSqrMag}");
                }
#endif

                int  posIndex = 0;
                bool hasValidPathTargetPos = false;
                if ((afterRotToTargetPos1DiffSqrMag < maxSpeedAddSqr || vehicleData.m_targetPos3.w < 0.01f) && (leaderData.m_flags & (Vehicle.Flags.WaitingPath | Vehicle.Flags.Stopped)) == (Vehicle.Flags) 0)
                {
                    if (vehicleData.m_path != 0u)
                    {
                        InvokeUpdatePathTargetPositions(tramBaseAI, vehicleID, ref vehicleData, posBeforeWheelRot, posAfterWheelRot, leaderID, ref leaderData, ref posIndex, 1, 4, maxSpeedAddSqr, meanSpeedAddSqr);
                    }
                    if (posIndex < 4)
                    {
                        hasValidPathTargetPos = true;
                        while (posIndex < 4)
                        {
                            vehicleData.SetTargetPos(posIndex, vehicleData.GetTargetPos(posIndex - 1));
                            posIndex++;
                        }
                    }
                    afterRotToTargetPos1Diff       = (Vector3)vehicleData.m_targetPos1 - posAfterWheelRot;
                    afterRotToTargetPos1DiffSqrMag = afterRotToTargetPos1Diff.sqrMagnitude;
                }

#if DEBUG
                if (debug)
                {
                    Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): posIndex={posIndex} hasValidPathTargetPos={hasValidPathTargetPos}");
                }
#endif

                if (leaderData.m_path != 0u && (leaderData.m_flags & Vehicle.Flags.WaitingPath) == (Vehicle.Flags) 0)
                {
                    NetManager netMan               = Singleton <NetManager> .instance;
                    byte       leaderPathPosIndex   = leaderData.m_pathPositionIndex;
                    byte       leaderLastPathOffset = leaderData.m_lastPathOffset;
                    if (leaderPathPosIndex == 255)
                    {
                        leaderPathPosIndex = 0;
                    }
                    float leaderLen = 1f + leaderData.CalculateTotalLength(leaderID);

#if DEBUG
                    if (debug)
                    {
                        Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): leaderPathPosIndex={leaderPathPosIndex} leaderLastPathOffset={leaderLastPathOffset} leaderPathPosIndex={leaderPathPosIndex} leaderLen={leaderLen}");
                    }
#endif

                    // reserve space / add traffic
                    PathManager       pathMan = Singleton <PathManager> .instance;
                    PathUnit.Position pathPos;
                    if (pathMan.m_pathUnits.m_buffer[leaderData.m_path].GetPosition(leaderPathPosIndex >> 1, out pathPos))
                    {
                        netMan.m_segments.m_buffer[(int)pathPos.m_segment].AddTraffic(Mathf.RoundToInt(leaderLen * 2.5f));
                        bool reservedSpaceOnCurrentLane = false;
                        if ((leaderPathPosIndex & 1) == 0 || leaderLastPathOffset == 0)
                        {
                            uint laneId = PathManager.GetLaneID(pathPos);
                            if (laneId != 0u)
                            {
                                Vector3 curPathOffsetPos = netMan.m_lanes.m_buffer[laneId].CalculatePosition((float)pathPos.m_offset * 0.003921569f);
                                float   speedAdd         = 0.5f * curSpeed * curSpeed / this.m_info.m_braking;
                                float   afterWheelRotCurPathOffsetDist  = Vector3.Distance(posAfterWheelRot, curPathOffsetPos);
                                float   beforeWheelRotCurPathOffsetDist = Vector3.Distance(posBeforeWheelRot, curPathOffsetPos);
                                if (Mathf.Min(afterWheelRotCurPathOffsetDist, beforeWheelRotCurPathOffsetDist) >= speedAdd - 1f)
                                {
                                    netMan.m_lanes.m_buffer[laneId].ReserveSpace(leaderLen);
                                    reservedSpaceOnCurrentLane = true;
                                }
                            }
                        }

                        if (!reservedSpaceOnCurrentLane && pathMan.m_pathUnits.m_buffer[leaderData.m_path].GetNextPosition(leaderPathPosIndex >> 1, out pathPos))
                        {
                            uint nextLaneId = PathManager.GetLaneID(pathPos);
                            if (nextLaneId != 0u)
                            {
                                netMan.m_lanes.m_buffer[nextLaneId].ReserveSpace(leaderLen);
                            }
                        }
                    }

                    if ((ulong)(currentFrameIndex >> 4 & 15u) == (ulong)((long)(leaderID & 15)))
                    {
                        // check if vehicle can proceed to next path position

                        bool canProceeed           = false;
                        uint curLeaderPathId       = leaderData.m_path;
                        int  curLeaderPathPosIndex = leaderPathPosIndex >> 1;
                        int  k = 0;
                        while (k < 5)
                        {
                            bool invalidPos;
                            if (PathUnit.GetNextPosition(ref curLeaderPathId, ref curLeaderPathPosIndex, out pathPos, out invalidPos))
                            {
                                uint laneId = PathManager.GetLaneID(pathPos);
                                if (laneId != 0u && !netMan.m_lanes.m_buffer[laneId].CheckSpace(leaderLen))
                                {
                                    k++;
                                    continue;
                                }
                            }
                            if (invalidPos)
                            {
                                this.InvalidPath(vehicleID, ref vehicleData, leaderID, ref leaderData);
                            }
                            canProceeed = true;
                            break;
                        }
                        if (!canProceeed)
                        {
                            leaderData.m_flags |= Vehicle.Flags.Congestion;
                        }
                    }
                }

                float maxSpeed;
                if ((leaderData.m_flags & Vehicle.Flags.Stopped) != (Vehicle.Flags) 0)
                {
                    maxSpeed = 0f;
#if DEBUG
                    if (debug)
                    {
                        Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): Vehicle is stopped. maxSpeed={maxSpeed}");
                    }
#endif
                }
                else
                {
                    maxSpeed = Mathf.Min(vehicleData.m_targetPos1.w, GetMaxSpeed(leaderID, ref leaderData));
#if DEBUG
                    if (debug)
                    {
                        Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): Vehicle is not stopped. maxSpeed={maxSpeed}");
                    }
#endif
                }

#if DEBUG
                if (debug)
                {
                    Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): Start of second part. curSpeed={curSpeed} curInvRot={curInvRot}");
                }
#endif

                afterRotToTargetPos1Diff = curInvRot * afterRotToTargetPos1Diff;
#if DEBUG
                if (debug)
                {
                    Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): afterRotToTargetPos1Diff={afterRotToTargetPos1Diff} (old afterRotToTargetPos1DiffSqrMag={afterRotToTargetPos1DiffSqrMag})");
                }
#endif
                Vector3 zero       = Vector3.zero;
                bool    blocked    = false;
                float   forwardLen = 0f;
                if (afterRotToTargetPos1DiffSqrMag > 1f)                   // TODO why is this not recalculated?
                {
                    forward = VectorUtils.NormalizeXZ(afterRotToTargetPos1Diff, out forwardLen);
#if DEBUG
                    if (debug)
                    {
                        Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): afterRotToTargetPos1DiffSqrMag > 1f. forward={forward} forwardLen={forwardLen}");
                    }
#endif
                    if (forwardLen > 1f)
                    {
                        Vector3 fwd = afterRotToTargetPos1Diff;
                        maxSpeedAdd    = Mathf.Max(curSpeed, 2f);
                        maxSpeedAddSqr = maxSpeedAdd * maxSpeedAdd;
#if DEBUG
                        if (debug)
                        {
                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): forwardLen > 1f. fwd={fwd} maxSpeedAdd={maxSpeedAdd} maxSpeedAddSqr={maxSpeedAddSqr}");
                        }
#endif
                        if (afterRotToTargetPos1DiffSqrMag > maxSpeedAddSqr)
                        {
                            float fwdLimiter = maxSpeedAdd / Mathf.Sqrt(afterRotToTargetPos1DiffSqrMag);
                            fwd.x *= fwdLimiter;
                            fwd.y *= fwdLimiter;

#if DEBUG
                            if (debug)
                            {
                                Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): afterRotToTargetPos1DiffSqrMag > maxSpeedAddSqr. afterRotToTargetPos1DiffSqrMag={afterRotToTargetPos1DiffSqrMag} maxSpeedAddSqr={maxSpeedAddSqr} fwdLimiter={fwdLimiter} fwd={fwd}");
                            }
#endif
                        }

                        if (fwd.z < -1f)                           // !!!
                        {
#if DEBUG
                            if (debug)
                            {
                                Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): fwd.z < -1f. fwd={fwd}");
                            }
#endif

                            if (vehicleData.m_path != 0u && (leaderData.m_flags & Vehicle.Flags.WaitingPath) == (Vehicle.Flags) 0)
                            {
                                Vector3 targetPos0TargetPos1Diff = vehicleData.m_targetPos1 - vehicleData.m_targetPos0;
                                if ((curInvRot * targetPos0TargetPos1Diff).z < -0.01f)                                   // !!!
                                {
#if DEBUG
                                    if (debug)
                                    {
                                        Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): (curInvRot * targetPos0TargetPos1Diff).z < -0.01f. curInvRot={curInvRot} targetPos0TargetPos1Diff={targetPos0TargetPos1Diff}");
                                    }
#endif
                                    if (afterRotToTargetPos1Diff.z < Mathf.Abs(afterRotToTargetPos1Diff.x) * -10f)                                       // !!!
                                    {
#if DEBUG
                                        if (debug)
                                        {
                                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): afterRotToTargetPos1Diff.z < Mathf.Abs(afterRotToTargetPos1Diff.x) * -10f. fwd={fwd} targetPos0TargetPos1Diff={targetPos0TargetPos1Diff} afterRotToTargetPos1Diff={afterRotToTargetPos1Diff}");
                                        }
#endif

                                        /*fwd.z = 0f;
                                         * afterRotToTargetPos1Diff = Vector3.zero;*/
                                        maxSpeed = 0.5f;                                         // NON-STOCK CODE

#if DEBUG
                                        if (debug)
                                        {
                                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): (1) set maxSpeed={maxSpeed}");
                                        }
#endif
                                    }
                                    else
                                    {
                                        posAfterWheelRot = posBeforeWheelRot + Vector3.Normalize(vehicleData.m_targetPos1 - vehicleData.m_targetPos0) * this.m_info.m_generatedInfo.m_wheelBase;
                                        posIndex         = -1;
                                        InvokeUpdatePathTargetPositions(tramBaseAI, vehicleID, ref vehicleData, vehicleData.m_targetPos0, vehicleData.m_targetPos1, leaderID, ref leaderData, ref posIndex, 0, 0, Vector3.SqrMagnitude(vehicleData.m_targetPos1 - vehicleData.m_targetPos0) + 1f, 1f);

#if DEBUG
                                        if (debug)
                                        {
                                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): afterRotToTargetPos1Diff.z >= Mathf.Abs(afterRotToTargetPos1Diff.x) * -10f. Invoked UpdatePathTargetPositions. posAfterWheelRot={posAfterWheelRot} posBeforeWheelRot={posBeforeWheelRot} this.m_info.m_generatedInfo.m_wheelBase={this.m_info.m_generatedInfo.m_wheelBase}");
                                        }
#endif
                                    }
                                }
                                else
                                {
                                    posIndex = -1;
                                    InvokeUpdatePathTargetPositions(tramBaseAI, vehicleID, ref vehicleData, vehicleData.m_targetPos0, posBeforeWheelRot, leaderID, ref leaderData, ref posIndex, 0, 0, Vector3.SqrMagnitude(posBeforeWheelRot - (Vector3)vehicleData.m_targetPos0) + 1f, 1f);
                                    vehicleData.m_targetPos1 = posAfterWheelRot;
                                    fwd.z = 0f;
                                    afterRotToTargetPos1Diff = Vector3.zero;
                                    maxSpeed = 0f;

#if DEBUG
                                    if (debug)
                                    {
                                        Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): Vehicle is waiting for a path. posIndex={posIndex} vehicleData.m_targetPos1={vehicleData.m_targetPos1} fwd={fwd} afterRotToTargetPos1Diff={afterRotToTargetPos1Diff} maxSpeed={maxSpeed}");
                                    }
#endif
                                }
                            }
                            motionFactor = 0f;
#if DEBUG
                            if (debug)
                            {
                                Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): Reset motion factor. motionFactor={motionFactor}");
                            }
#endif
                        }

                        forward = VectorUtils.NormalizeXZ(fwd, out forwardLen);
                        float curve = Mathf.PI / 2f /* 1.57079637f*/ * (1f - forward.z);                       // <- constant: a bit inaccurate PI/2
                        if (forwardLen > 1f)
                        {
                            curve /= forwardLen;
                        }
                        float targetDist = forwardLen;
#if DEBUG
                        if (debug)
                        {
                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): targetDist={targetDist} fwd={fwd} curve={curve} maxSpeed={maxSpeed}");
                        }
#endif

                        if (vehicleData.m_targetPos1.w < 0.1f)
                        {
                            maxSpeed = this.CalculateTargetSpeed(vehicleID, ref vehicleData, 1000f, curve);
                            maxSpeed = Mathf.Min(maxSpeed, CalculateMaxSpeed(targetDist, vehicleData.m_targetPos1.w, braking * 0.9f));
                        }
                        else
                        {
                            maxSpeed = Mathf.Min(maxSpeed, this.CalculateTargetSpeed(vehicleID, ref vehicleData, 1000f, curve));
                        }
#if DEBUG
                        if (debug)
                        {
                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): [1] maxSpeed={maxSpeed}");
                        }
#endif
                        maxSpeed = Mathf.Min(maxSpeed, CalculateMaxSpeed(targetDist, vehicleData.m_targetPos2.w, braking * 0.9f));
#if DEBUG
                        if (debug)
                        {
                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): [2] maxSpeed={maxSpeed}");
                        }
#endif
                        targetDist += VectorUtils.LengthXZ(vehicleData.m_targetPos2 - vehicleData.m_targetPos1);
                        maxSpeed    = Mathf.Min(maxSpeed, CalculateMaxSpeed(targetDist, vehicleData.m_targetPos3.w, braking * 0.9f));
#if DEBUG
                        if (debug)
                        {
                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): [3] maxSpeed={maxSpeed}");
                        }
#endif
                        targetDist += VectorUtils.LengthXZ(vehicleData.m_targetPos3 - vehicleData.m_targetPos2);
                        if (vehicleData.m_targetPos3.w < 0.01f)
                        {
                            targetDist = Mathf.Max(0f, targetDist + (this.m_info.m_generatedInfo.m_wheelBase - this.m_info.m_generatedInfo.m_size.z) * 0.5f);
                        }
                        maxSpeed = Mathf.Min(maxSpeed, CalculateMaxSpeed(targetDist, 0f, braking * 0.9f));
#if DEBUG
                        if (debug)
                        {
                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): [4] maxSpeed={maxSpeed}");
                        }
#endif
                        CarAI.CheckOtherVehicles(vehicleID, ref vehicleData, ref frameData, ref maxSpeed, ref blocked, ref zero, estimatedFrameDist, braking * 0.9f, lodPhysics);
#if DEBUG
                        if (debug)
                        {
                            Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): CheckOtherVehicles finished. blocked={blocked}");
                        }
#endif
                        if (maxSpeed < curSpeed)
                        {
                            float brake = Mathf.Max(acceleration, Mathf.Min(braking, curSpeed));
                            targetSpeed = Mathf.Max(maxSpeed, curSpeed - brake);
#if DEBUG
                            if (debug)
                            {
                                Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): maxSpeed < curSpeed. maxSpeed={maxSpeed} curSpeed={curSpeed} brake={brake} targetSpeed={targetSpeed}");
                            }
#endif
                        }
                        else
                        {
                            float accel = Mathf.Max(acceleration, Mathf.Min(braking, -curSpeed));
                            targetSpeed = Mathf.Min(maxSpeed, curSpeed + accel);
#if DEBUG
                            if (debug)
                            {
                                Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): maxSpeed >= curSpeed. maxSpeed={maxSpeed} curSpeed={curSpeed} accel={accel} targetSpeed={targetSpeed}");
                            }
#endif
                        }
                    }
                }
                else if (curSpeed < 0.1f && hasValidPathTargetPos && leaderInfo.m_vehicleAI.ArriveAtDestination(leaderID, ref leaderData))
                {
                    leaderData.Unspawn(leaderID);
                    return;
                }
                if ((leaderData.m_flags & Vehicle.Flags.Stopped) == (Vehicle.Flags) 0 && maxSpeed < 0.1f)
                {
#if DEBUG
                    if (debug)
                    {
                        Log._Debug($"CustomTramBaseAI.SimulationStep({vehicleID}): Vehicle is not stopped but maxSpeed < 0.1. maxSpeed={maxSpeed}");
                    }
#endif
                    blocked = true;
                }
                if (blocked)
                {
                    leaderData.m_blockCounter = (byte)Mathf.Min((int)(leaderData.m_blockCounter + 1), 255);
                }
                else
                {
                    leaderData.m_blockCounter = 0;
                }
                if (forwardLen > 1f)
                {
                    turnAngle    = Mathf.Asin(forward.x) * Mathf.Sign(targetSpeed);
                    targetMotion = forward * targetSpeed;
                }
                else
                {
                    Vector3 vel = Vector3.ClampMagnitude(afterRotToTargetPos1Diff * 0.5f - curveTangent, braking);
                    targetMotion = curveTangent + vel;
                }
            }
            bool    mayBlink = (currentFrameIndex + (uint)leaderID & 16u) != 0u;
            Vector3 springs  = targetMotion - curveTangent;
            Vector3 targetAfterWheelRotMotion  = frameData.m_rotation * targetMotion;
            Vector3 targetBeforeWheelRotMotion = Vector3.Normalize((Vector3)vehicleData.m_targetPos0 - posBeforeWheelRot) * (targetMotion.magnitude * motionFactor);
            targetBeforeWheelRotMotion -= targetAfterWheelRotMotion * (Vector3.Dot(targetAfterWheelRotMotion, targetBeforeWheelRotMotion) / Mathf.Max(1f, targetAfterWheelRotMotion.sqrMagnitude));
            posAfterWheelRot           += targetAfterWheelRotMotion;
            posBeforeWheelRot          += targetBeforeWheelRotMotion;
            frameData.m_rotation        = Quaternion.LookRotation(posAfterWheelRot - posBeforeWheelRot);
            Vector3 targetPos = posAfterWheelRot - frameData.m_rotation * new Vector3(0f, 0f, this.m_info.m_generatedInfo.m_wheelBase * 0.5f);
            frameData.m_velocity = targetPos - frameData.m_position;
            if (leadingVehicle != 0)
            {
                frameData.m_position += frameData.m_velocity * 0.6f;
            }
            else
            {
                frameData.m_position += frameData.m_velocity * 0.5f;
            }
            frameData.m_swayVelocity    = frameData.m_swayVelocity * (1f - this.m_info.m_dampers) - springs * (1f - this.m_info.m_springs) - frameData.m_swayPosition * this.m_info.m_springs;
            frameData.m_swayPosition   += frameData.m_swayVelocity * 0.5f;
            frameData.m_steerAngle      = 0f;
            frameData.m_travelDistance += targetMotion.z;
            if (leadingVehicle != 0)
            {
                frameData.m_lightIntensity = Singleton <VehicleManager> .instance.m_vehicles.m_buffer[(int)leaderID].GetLastFrameData().m_lightIntensity;
            }
            else
            {
                frameData.m_lightIntensity.x = 5f;
                frameData.m_lightIntensity.y = ((springs.z >= -0.1f) ? 0.5f : 5f);
                frameData.m_lightIntensity.z = ((turnAngle >= -0.1f || !mayBlink) ? 0f : 5f);
                frameData.m_lightIntensity.w = ((turnAngle <= 0.1f || !mayBlink) ? 0f : 5f);
            }
            frameData.m_underground = ((vehicleData.m_flags & Vehicle.Flags.Underground) != (Vehicle.Flags) 0);
            frameData.m_transition  = ((vehicleData.m_flags & Vehicle.Flags.Transition) != (Vehicle.Flags) 0);
            //base.SimulationStep(vehicleID, ref vehicleData, ref frameData, leaderID, ref leaderData, lodPhysics);
        }