hook.Add("UpdateAnimation","sg", function( ply, velocity, maxseqgroundspeed )

    local eye = ply:EyeAngles()

        // correct player angles
    ply:SetLocalAngles( eye )

    if CLIENT then
                // set rendering angles for zombie
        ply:SetRenderAngles( eye )
    end

    local estyaw = math.Clamp( math.atan2(velocity.y, velocity.x) * 180 / math.pi, -180, 180 )
    local myaw = math.NormalizeAngle(math.NormalizeAngle(eye.y) - estyaw)

        // set the move_yaw (because it's not an hl2mp model)
    //ply:SetPoseParameter("move_yaw", -myaw)

    local len2d = velocity:Length2D()
    local rate = 1.0

    if len2d > 0.5 then
            rate =  ( ( len2d * 0.8 ) / maxseqgroundspeed )
    end

    rate = math.Clamp(rate, 0, 1.5)
        // you can obviously set your own playback rate

    ply:SetPlaybackRate( rate )
end)

hook.Add("CalcMainActivity","sg", function( ply, velocity )
    ply.CalcIdeal = ACT_MP_STAND_IDLE
    ply.CalcSeqOverride = -1

//  if self:HandlePlayerDriving( ply ) ||
    //  self:HandlePlayerJumping( ply ) ||
    //  self:HandlePlayerDucking( ply, velocity ) ||
    //  self:HandlePlayerSwimming( ply ) then

//  else
        local len2d = velocity:Length2D()

        if len2d > 210 then
            ply.CalcIdeal = ACT_MP_RUN
        elseif len2d > 0.5 then
            ply.CalcIdeal = ACT_MP_WALK
        end
//  end

    // a bit of a hack because we're missing ACTs for a couple holdtypes
    local weapon = ply:GetActiveWeapon()

    if ply.CalcIdeal == ACT_MP_CROUCH_IDLE &&
        IsValid(weapon) &&
        ( weapon._InternalHoldType == "knife" || weapon._InternalHoldType == "melee2" ) then

        ply.CalcSeqOverride = ply:LookupSequence("cidle_" .. weapon._InternalHoldType)
    end

    if( ply.m_iPunchAttack and CurTime() < ply.m_iPunchAttack ) then
        return ply.CalcIdeal, ply:LookupSequence( "sit" )
    end

    return ply.CalcIdeal, ply.CalcSeqOverride
end)

hook.Add("DoAnimationEvent","sg", function( ply, event, data )
    if event == PLAYERANIMEVENT_ATTACK_PRIMARY then

        ply:AnimRestartGesture( GESTURE_SLOT_ATTACK_AND_RELOAD, ACT_MELEE_ATTACK_SWING_GESTURE )
        return ACT_VM_PRIMARYATTACK

    elseif event == PLAYERANIMEVENT_JUMP then

        ply.m_bJumping = true
        ply.m_bFirstJumpFrame = true
        ply.m_flJumpStartTime = CurTime()

        ply:AnimRestartMainSequence()

        return ACT_INVALID
    end

    return nil
end)