dayzplayerimplementaiming.c

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/* 
DayZPlayerImplement
 
this file is implemenation of dayzPlayer in script 
- logic of movement 
- camera switching logic
 
*/
 
enum eSwayStates
{
    DEFAULT,
    HOLDBREATH_IN,
    HOLDBREATH_STABLE,
    HOLDBREATH_EXHAUSTED,
    MAX
}
 
class PlayerSwayConstants
{
    static const float SWAY_MULTIPLIER_DEFAULT = 1.0;
    static const float SWAY_MULTIPLIER_STABLE = 0.05;
    static const float SWAY_MULTIPLIER_EXHAUSTED = 0.6;
    static const float SWAY_TIME_IN = 1.5;
    static const float SWAY_TIME_STABLE = 3.0;
    static const float SWAY_TIME_EXHAUSTED = 1.5;
    static const float SWAY_TIME_OUT = 0.5;
    static const float SWAY_ROLL = 3;
    static const float HOLD_BREATH_STAMINA_THRESHOLD = 0.5; 
}
 
class DayZPlayerImplementAiming
{
 
    //-------------------------------------------------------------
    
    protected const float SWAY_WEIGHT_SCALER = 1;//use this to scale the sway effect up/down
    protected float m_HorizontalNoise;
    protected float m_HorizontalTargetValue;
    protected float m_HorizontalNoiseVelocity[1] = {0};
    protected DayZPlayerImplement   m_PlayerDpi;
    protected PlayerBase m_PlayerPb;
    protected float m_TotalTime;
    protected float m_ReferenceTime = 0;
    protected float m_StaminaPercentage; 
    protected float m_HoldBreathSwayCoef = 1.0; 
    protected float m_SwayStateStartTime;
    //protected float m_SwayStateStartTime[eSwayStates.MAX];
    protected float m_LastSwayMultiplier = PlayerSwayConstants.SWAY_MULTIPLIER_DEFAULT;
    protected float m_StateStartSwayMultiplier;
    protected float m_HorizontalNoiseXAxisOffset;
    protected float m_BreathingXAxisOffset;
    protected float m_BreathingYAxisOffset;
    protected bool m_HoldingBreathSet;
    protected bool  m_AimNoiseAllowed = true;   
    protected bool  m_ProceduralRecoilEnabled = true;   
    protected ref RecoilBase m_CurrentRecoil;
    protected int m_ShakeCount;
    protected float m_SwayWeight;
    protected float m_MaxVelocity;
    protected ref KuruShake m_KuruShake;
    protected float m_CamShakeX;
    protected float m_CamShakeY;
    protected vector m_SwayModifier = "1 1 1";//"max_speed_noise radius_noise overall_speed"
    protected int m_SwayState = -1;
    
    protected float m_StealthAimY_Last;
    protected float m_FilterVelocityStealthAimY[1] = {0};
    
    protected static float  m_AimXClampRanges[] = { -180, -20, 90,  0, -50, 90,  180, -20, 90 };
    
    void DayZPlayerImplementAiming(DayZPlayerImplement player)
    {
        m_PlayerDpi = player;
        Class.CastTo(m_PlayerPb, player);
        UpdateSwayState(eSwayStates.DEFAULT);
    }
 
    void SetRecoil(Weapon_Base weapon)
    {
        if (m_ProceduralRecoilEnabled)
        {
            m_CurrentRecoil = weapon.SpawnRecoilObject();
        }
    }
    
    void RequestKuruShake(float amount)
    {
        if (!m_KuruShake)
            m_KuruShake = new KuruShake(m_PlayerPb, amount);
    }
    
    void OnRaiseBegin(DayZPlayerImplement player)
    {
        Weapon_Base weapon = Weapon_Base.Cast(player.GetHumanInventory().GetEntityInHands());
        if (weapon)
        {
            m_SwayModifier = weapon.GetPropertyModifierObject().m_SwayModifiers;
        }
    }
    
    void OnFinisherBegin(float currentAimY)
    {
        m_StealthAimY_Last = currentAimY;
        m_FilterVelocityStealthAimY[0] = 0;
    }
    
    void OnSwayStateChange(int state)
    {
        switch (state)
        {
            case eSwayStates.HOLDBREATH_EXHAUSTED:
                m_PlayerPb.OnHoldBreathExhausted();
            break;
            
            default:
            break;
        }
    }
    
    float GetSwayWeight()
    {
        return m_SwayWeight;        
    }
    
    void SetAimNoiseAllowed(bool state)
    {
        m_AimNoiseAllowed = state;  
    }
    
    bool IsAimNoiseAllowed()
    {
        return m_AimNoiseAllowed;   
    }
 
    void SetProceduralRecoilEnabled(bool state)
    {
        m_ProceduralRecoilEnabled = state;
    }
 
    bool IsProceduralRecoilEnabled()
    {
        return m_ProceduralRecoilEnabled;
    }
    
    void SetCamShakeValues(float x_axis, float y_axis)
    {
        m_CamShakeX = x_axis;
        m_CamShakeY = y_axis;
    }
 
    bool ProcessStealthFilters(float pDt, SDayZPlayerAimingModel pModel)
    {       
        m_StealthAimY_Last = Math.SmoothCD(m_StealthAimY_Last, 0, m_FilterVelocityStealthAimY, 0.3, 1000, pDt);
        pModel.m_fAimYMouseShift = -(pModel.m_fCurrentAimY - m_StealthAimY_Last);
        return true;
    }
    
    bool ProcessAimFilters(float pDt, SDayZPlayerAimingModel pModel, int stance_index)
    {
        float breathing_offset_x;
        float breathing_offset_y;
        
        float noise_offset_x;
        float noise_offset_y;       
        
        float shake_offset_x;
        float shake_offset_y;
        
        float recoil_offset_mouse_x;
        float recoil_offset_mouse_y;
        
        float recoil_offset_hands_x;
        float recoil_offset_hands_y;
        
        float kuru_offset_x;
        float kuru_offset_y;
        
        float player_stamina = m_PlayerPb.GetStaminaHandler().GetSyncedStaminaNormalized();
        
        #ifdef DEVELOPER
        DbgPrintAimingImplement("Player: " + m_PlayerPb + " | ProcessAimFilters | timestamp: " + m_PlayerPb.GetSimulationTimeStamp());
        #endif
        
        //negates stamina effect during hold breath
        if (m_PlayerPb.IsHoldingBreath())
        {
            player_stamina = 1;
        }
        float speed = CalculateSpeedMultiplier(player_stamina);
        m_TotalTime += pDt * speed;
        
        if (m_PlayerPb.IsHoldingBreath() && !m_HoldingBreathSet)
        {
            m_ReferenceTime = m_TotalTime;
            m_StaminaPercentage = m_PlayerPb.GetStaminaHandler().GetSyncedStaminaNormalized();
            m_HoldBreathSwayCoef = Math.InverseLerp(0,PlayerSwayConstants.HOLD_BREATH_STAMINA_THRESHOLD,m_StaminaPercentage);
            m_HoldBreathSwayCoef = Math.Clamp(m_HoldBreathSwayCoef,0,1);
            m_HoldBreathSwayCoef = Math.Lerp(PlayerSwayConstants.HOLD_BREATH_STAMINA_THRESHOLD,1,m_HoldBreathSwayCoef);
        }
        else if (!m_PlayerPb.IsHoldingBreath() && m_HoldingBreathSet)
        {
            m_ReferenceTime = m_TotalTime;
        }
        
        float adjusted_sway_multiplier = CalculateSwayMultiplier();
        m_LastSwayMultiplier = adjusted_sway_multiplier;
        
        m_SwayWeight = CalculateWeight( stance_index, player_stamina, 0.5/*m_PlayerPb.m_CameraSwayModifier*/, m_PlayerPb.IsHoldingBreath()) * adjusted_sway_multiplier;
 
        ApplyBreathingPattern(breathing_offset_x, breathing_offset_y, 3.0, m_TotalTime, m_SwayWeight);
        ApplyHorizontalNoise(noise_offset_x, noise_offset_y, 0.2, 0.5, 3.0 * m_SwayModifier[0], speed, 3 * m_SwayModifier[1], m_SwayWeight, pDt);
        
        int shake_level = m_PlayerPb.GetShakeLevel();
        if (shake_level != 0)
        {
            ApplyShakes(shake_offset_x, shake_offset_y, shake_level);
        }
 
        if (m_CurrentRecoil)
        {
            m_CurrentRecoil.Update(pModel, recoil_offset_mouse_x, recoil_offset_mouse_y, recoil_offset_hands_x, recoil_offset_hands_y, pDt);
        }
        
        if (m_KuruShake)
        {
            m_KuruShake.Update(pDt, kuru_offset_x, kuru_offset_y);
        }
        
        pModel.m_fAimXHandsOffset = breathing_offset_x + noise_offset_x + recoil_offset_hands_x + shake_offset_x + kuru_offset_x;
        pModel.m_fAimYHandsOffset = breathing_offset_y + noise_offset_y + recoil_offset_hands_y + shake_offset_y + kuru_offset_y;
        
        #ifdef DEVELOPER
        DbgPrintAimingImplement("breathing_offset_y: " + breathing_offset_y);
        DbgPrintAimingImplement("noise_offset_y: " + noise_offset_y);
        DbgPrintAimingImplement("recoil_offset_hands_y: " + recoil_offset_hands_y);
        DbgPrintAimingImplement("shake_offset_y: " + shake_offset_y);
        DbgPrintAimingImplement("kuru_offset_y: " + kuru_offset_y);
        DbgPrintAimingImplement("pModel.m_fAimYHandsOffset: " + pModel.m_fAimYHandsOffset);
        #endif
        pModel.m_fAimXCamOffset = -shake_offset_x - recoil_offset_hands_x - kuru_offset_x + m_CamShakeX;
        pModel.m_fAimYCamOffset = -shake_offset_y - recoil_offset_hands_y - kuru_offset_y + m_CamShakeY;
        
        
        #ifdef DEVELOPER
        DbgPrintAimingImplement("m_CamShakeY: " + m_CamShakeY);
        DbgPrintAimingImplement("pModel.m_fAimYCamOffset: " + pModel.m_fAimYCamOffset);
        #endif
        
        if (stance_index == DayZPlayerConstants.STANCEIDX_RAISEDPRONE)
        {
            float newVal = DayZPlayerUtils.LinearRangeClamp(pModel.m_fCurrentAimX, pModel.m_fCurrentAimY, m_AimXClampRanges);
            pModel.m_fAimYHandsOffset += newVal - pModel.m_fCurrentAimY;
        }
        float absAimY = Math.AbsFloat(pModel.m_fCurrentAimY);
        pModel.m_fAimYHandsOffset = Math.Clamp(pModel.m_fAimYHandsOffset,absAimY - 89.9,89.9 - absAimY); //'90' leads to rounding errors down the line
        
        if (m_PlayerDpi.IsInOptics() && m_KuruShake)
        {
            //TODO - do not offset mouse
        }
        pModel.m_fAimXMouseShift = recoil_offset_mouse_x -kuru_offset_x / 10;
        pModel.m_fAimYMouseShift = recoil_offset_mouse_y + kuru_offset_y / 10;
 
        #ifdef DEVELOPER
        DbgPrintAimingImplement("recoil_offset_mouse_y: " + recoil_offset_mouse_y);
        DbgPrintAimingImplement("pModel.m_fAimYMouseShift: " + pModel.m_fAimYMouseShift);
        #endif
        
        if (m_PlayerPb.IsHoldingBreath() && !m_HoldingBreathSet)
        {
            m_HoldingBreathSet = true;
            m_HorizontalNoiseXAxisOffset = noise_offset_x;
            m_BreathingXAxisOffset = breathing_offset_x;
            m_BreathingYAxisOffset = breathing_offset_y;
        }
        else if (!m_PlayerPb.IsHoldingBreath() && m_HoldingBreathSet)
        {
            m_HoldingBreathSet = false;
        }
        
        if (!m_PlayerPb.IsHoldingBreath() && m_LastSwayMultiplier == PlayerSwayConstants.SWAY_MULTIPLIER_DEFAULT && m_HorizontalNoiseXAxisOffset != 0)
        {
            m_HorizontalNoiseXAxisOffset = 0;
            m_BreathingXAxisOffset = 0;
            m_BreathingYAxisOffset = 0;
        }
        
        if (m_PlayerPb.IsHoldingBreath())
        {
            m_PlayerPb.DepleteStaminaEx(EStaminaModifiers.HOLD_BREATH, pDt * speed, m_HoldBreathSwayCoef);
        }
        #ifdef DEVELOPER
        DbgPrintAimingImplement("----------------------------");
        #endif
        return true;
    }
    
    protected float CalculateSwayMultiplier()
    {
        float max;
        float time;
        float time_clamped;
        float ret;
        
        if (m_PlayerPb.IsHoldingBreath())
        {
            time = m_TotalTime - m_ReferenceTime;
            
            if (time < (PlayerSwayConstants.SWAY_TIME_IN * m_HoldBreathSwayCoef))
            {
                UpdateSwayState(eSwayStates.HOLDBREATH_IN);
                max = PlayerSwayConstants.SWAY_TIME_IN * m_HoldBreathSwayCoef;
                time_clamped = Math.Clamp((m_TotalTime - m_SwayStateStartTime),0,max);
                ret = Math.Lerp(m_LastSwayMultiplier,PlayerSwayConstants.SWAY_MULTIPLIER_STABLE,time_clamped/max);
            }
            else if (time >= (PlayerSwayConstants.SWAY_TIME_IN * m_HoldBreathSwayCoef) && time < (m_HoldBreathSwayCoef * (PlayerSwayConstants.SWAY_TIME_IN + PlayerSwayConstants.SWAY_TIME_STABLE)))
            {
                UpdateSwayState(eSwayStates.HOLDBREATH_STABLE);
                ret = PlayerSwayConstants.SWAY_MULTIPLIER_STABLE;
            }
            else
            {
                UpdateSwayState(eSwayStates.HOLDBREATH_EXHAUSTED);
                max = PlayerSwayConstants.SWAY_TIME_EXHAUSTED * m_HoldBreathSwayCoef;
                time_clamped = Math.Clamp((m_TotalTime - m_SwayStateStartTime),0,max);
                ret = Math.Lerp(PlayerSwayConstants.SWAY_MULTIPLIER_STABLE,PlayerSwayConstants.SWAY_MULTIPLIER_EXHAUSTED,(time_clamped/max));
            }
        }
        else
        {
            UpdateSwayState(eSwayStates.DEFAULT);
            max = PlayerSwayConstants.SWAY_TIME_OUT;
            time_clamped = Math.Clamp((m_TotalTime - m_SwayStateStartTime),0,max);
            ret = Math.Lerp(m_LastSwayMultiplier,1,time_clamped/max);
        }
        return ret;
    }
    
    float CalculateSpeedMultiplier(float stamina)
    {
        return (((1.0 - stamina) * 3.0) + 1.0) * m_SwayModifier[2]; // just 'm_SwayModifier[2]' for HoldBreath
    }
    
    protected bool UpdateSwayState(int state)
    {
        if (state != m_SwayState)
        {
            m_SwayState = state;
            m_SwayStateStartTime = m_TotalTime;
            m_StateStartSwayMultiplier = m_LastSwayMultiplier;
            OnSwayStateChange(state);
            return true;
        }
        
        return false;
    }
    
    int GetCurrentSwayState()
    {
        return m_SwayState;
    }
 
    protected void ApplyBreathingPattern(out float x_axis, out float y_axis, float pAmplitude, float pTotalTime, float weight)
    {
 
        float multiplier = Math.Lerp(PlayerSwayConstants.SWAY_MULTIPLIER_DEFAULT,0,m_LastSwayMultiplier); //TODO revise
        #ifdef DEVELOPER
        DbgPrintAimingImplement("m_LastSwayMultiplier: " + m_LastSwayMultiplier);
        DbgPrintAimingImplement("pAmplitude: " + pAmplitude);
        DbgPrintAimingImplement("pTotalTime: " + pTotalTime);
        DbgPrintAimingImplement("weight: " + weight);
        DbgPrintAimingImplement("multiplier: " + multiplier);
        #endif
        
        x_axis = (Math.Sin(pTotalTime) * pAmplitude / 4) * weight;
        y_axis = (Math.Sin((pTotalTime) * 0.8 + 0.6) * pAmplitude) * weight;
        #ifdef DEVELOPER 
        DbgPrintAimingImplement("y_axis_midproduct: " + y_axis); 
        #endif
        x_axis += m_BreathingXAxisOffset * multiplier;
        y_axis += m_BreathingYAxisOffset * multiplier;
    }
 
    protected void ApplyHorizontalNoise(out float x_axis, out float y_axis, float smooth_time,float max_velocity_low, float max_velocity_high, float velocity_modifier,  float max_distance, float weight, float pDt)
    {
        if (Math.AbsFloat(m_HorizontalTargetValue - m_HorizontalNoise) < 0.01)
        {
            //acquire new target
            m_MaxVelocity = m_PlayerPb.GetRandomGeneratorSyncManager().GetRandomInRange(RandomGeneratorSyncUsage.RGSAimingModel, max_velocity_low, max_velocity_high);
 
            float r = m_PlayerPb.GetRandomGeneratorSyncManager().GetRandomInRange(RandomGeneratorSyncUsage.RGSAimingModel, 0, 1);
            m_HorizontalTargetValue = (r - 0.5) * 2 * max_distance;
            m_HorizontalNoiseVelocity[0] = 0;
        }
 
        m_HorizontalNoise = Math.SmoothCD(m_HorizontalNoise, m_HorizontalTargetValue, m_HorizontalNoiseVelocity, smooth_time, m_MaxVelocity * velocity_modifier, pDt);
        x_axis = m_HorizontalNoise * weight;
        float multiplier = Math.Lerp(PlayerSwayConstants.SWAY_MULTIPLIER_DEFAULT,0,m_LastSwayMultiplier); //TODO revise
        x_axis += m_HorizontalNoiseXAxisOffset * multiplier;
    }
    
    protected void ApplyShakes(out float x_axis, out float y_axis, int level)
    {
        float weight = level / PlayerBase.SHAKE_LEVEL_MAX;
        m_ShakeCount++;
        int shakes_threshold = Math.Round(m_PlayerPb.GetRandomGeneratorSyncManager().GetRandomInRange(RandomGeneratorSyncUsage.RGSAimingModel, 2, 4));
        if (m_ShakeCount > shakes_threshold)
        {
            m_ShakeCount = 0;
 
            float modifier = m_PlayerPb.GetRandomGeneratorSyncManager().GetRandomInRange(RandomGeneratorSyncUsage.RGSAimingModel, 0.45, 0.9);
            x_axis = modifier * weight * m_PlayerPb.GetRandomGeneratorSyncManager().GetRandomInRange(RandomGeneratorSyncUsage.RGSAimingModel, 0, 1);
            y_axis = modifier * weight * m_PlayerPb.GetRandomGeneratorSyncManager().GetRandomInRange(RandomGeneratorSyncUsage.RGSAimingModel, 0, 1);
        }
    }
 
    protected float CalculateWeight(int stance_index, float current_stamina, float camera_sway_modifier, bool holding_breath)
    {
        if (m_PlayerDpi.GetCommand_Move() && m_PlayerDpi.GetCommand_Move().IsInRoll())//when the player is rolling, set a constant and disregard everything else
        {
            return PlayerSwayConstants.SWAY_ROLL;
        }
        float stance_modifier;
        switch (stance_index)
        {
            case DayZPlayerConstants.STANCEIDX_RAISEDERECT:
                stance_modifier = 0.5;
            break;
            case DayZPlayerConstants.STANCEIDX_RAISEDCROUCH:
                stance_modifier = 0.75;
            break;
            case DayZPlayerConstants.STANCEIDX_RAISEDPRONE:
                stance_modifier = 0.925;
            break;
            default:
                stance_modifier = 0.75;
                //Debug.LogError("stance mask out of definition");
            break;
        }
        
        #ifdef DEVELOPER
        DbgPrintAimingImplement("current_stamina: " + current_stamina);
        DbgPrintAimingImplement("camera_sway_modifier: " + camera_sway_modifier);
        DbgPrintAimingImplement("holding_breath: " + holding_breath);
        #endif
        
        return (1 - stance_modifier) * m_AimNoiseAllowed * camera_sway_modifier * SWAY_WEIGHT_SCALER;
    }
    
    void DbgPrintAimingImplement(string val)
    {
        #ifdef DEVELOPER
        if (GetDayZGame().IsAimLogEnabled())
            Print("DayZPlayerImplementAiming | " + val);
        #endif
    }
}