DayZPlayerImplementFallDamage.c

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class FallDamageData
{
    int m_LandType;
    float m_Height;
    float m_HealthCoef;
    float m_ShockCoef;
    float m_BrokenLegsCoef;
    float m_BleedingHandsCoef;
    float m_BleedingFeetCoef;
    float m_BleedingLegsCoef;
    float m_GlovesHealthCoef;
    float m_ShoesHealthCoef;
    float m_PantsHealthCoef;
    float m_BleedingChanceCoef;
    float m_BleedingChanceLegsCoef;
}
 
class DayZPlayerImplementFallDamage
{
    static const string FALL_DAMAGE_AMMO_HEALTH = "FallDamageHealth";
    static const string FALL_DAMAGE_AMMO_SHOCK  = "FallDamageShock";
 
    static const string FALL_DAMAGE_AMMO_HEALTH_ATTACHMENT  = "FallDamageHealthAttachment";
    static const string FALL_DAMAGE_AMMO_HEALTH_OTHER_ATTACHMENTS   = "FallDamageHealthOtherAttachments";
 
    const float     HEALTH_HEIGHT_LOW       = 5;
    const float     HEALTH_HEIGHT_HIGH      = 14;
 
    private const float     SHOCK_HEIGHT_LOW        = 3;
    private const float     SHOCK_HEIGHT_HIGH       = 12;
    private const float     BROKENLEGS_HEIGHT_LOW   = 5;
    private const float     BROKENLEGS_HEIGHT_HIGH  = 9;
    
    private const float     GLOVES_HEALTH_HEIGHT_LOW        = 5;
    private const float     GLOVES_HEALTH_HEIGHT_HIGH       = 15;
    private const float     SHOES_HEALTH_HEIGHT_LOW         = 2;
    private const float     SHOES_HEALTH_HEIGHT_HIGH        = 15;
    private const float     PANTS_HEALTH_HEIGHT_LOW         = 5;
    private const float     PANTS_HEALTH_HEIGHT_HIGH        = 16;
    
    private const float     BLEEDINGHANDS_HEIGHT_LOW    = 5;
    private const float     BLEEDINGFEET_HEIGHT_LOW     = 3;
    private const float     BLEEDINGLEGS_HEIGHT_LOW     = 10;
 
    private const float     RANDOM_THRESHOLD_HEALTH_LOW         = 0.05;
    private const float     RANDOM_THRESHOLD_HEALTH_HIGH        = 0.1;
    private const float     RANDOM_THRESHOLD_LEGS_LOW           = 0.05;
    private const float     RANDOM_THRESHOLD_LEGS_HIGH          = 0.1;
    private const float     RANDOM_THRESHOLD_ATTACHMENTS_LOW    = 0;
    private const float     RANDOM_THRESHOLD_ATTACHMENTS_HIGH   = 0.2;
    
    private const float     BLEEDING_CHANCE_HEIGHT_LOW      = 3;
    private const float     BLEEDING_CHANCE_HEIGHT_HIGH     = 15;
    
    private static const float  BROKENLEGS_HEALTH_DAMAGE_MAX = 125;
    
    private static const string BLEEDING_HANDS_SELECTIONS[2] = {"LeftForeArmRoll", "RightForeArmRoll"};
    private static const string BLEEDING_FEET_SELECTIONS[2] = {"LeftFoot", "RightFoot"};
    private static const string BLEEDING_LEGS_SELECTIONS[2] = {"LeftLeg", "RightLeg"};
    
    private const int DAMAGE_TYPE_GLOBAL        = 0;
    private const int DAMAGE_TYPE_LEGS          = 1;
    private const int DAMAGE_TYPE_ATTACHMENTS   = 2;
    
    DayZPlayer      m_Player;
    private ref FallDamageData m_FallDamageData;
    
    #ifdef DIAG_DEVELOPER
    bool m_Debug = false;
    private static ref map<string, float> m_AmmoTypeData; 
    #endif
 
    void DayZPlayerImplementFallDamage(DayZPlayer pPlayer)
    {
        m_Player    = pPlayer;
        m_FallDamageData = new FallDamageData();
        
        #ifdef DIAG_DEVELOPER
        PreloadAmmoTypeData();
        #endif
    }
    
    float GetHeight()
    {
        return m_FallDamageData.m_Height;
    }
 
    int GetLandType()
    {
        return m_FallDamageData.m_LandType;
    }
 
    void HandleFallDamage(FallDamageData pData)
    {
        m_FallDamageData = pData;
        
        m_FallDamageData.m_HealthCoef = Math.InverseLerp(HEALTH_HEIGHT_LOW, HEALTH_HEIGHT_HIGH, pData.m_Height);
        m_FallDamageData.m_HealthCoef = Randomize(DAMAGE_TYPE_GLOBAL, m_FallDamageData.m_HealthCoef);
        m_FallDamageData.m_HealthCoef = Math.Clamp(m_FallDamageData.m_HealthCoef, 0, 1);
 
        m_FallDamageData.m_ShockCoef = Math.InverseLerp(SHOCK_HEIGHT_LOW, SHOCK_HEIGHT_HIGH, pData.m_Height);
        m_FallDamageData.m_ShockCoef = Math.Clamp(m_FallDamageData.m_ShockCoef, 0, 1);
 
        m_FallDamageData.m_BrokenLegsCoef = Math.InverseLerp(BROKENLEGS_HEIGHT_LOW, BROKENLEGS_HEIGHT_HIGH, pData.m_Height);
        m_FallDamageData.m_BrokenLegsCoef = Randomize(DAMAGE_TYPE_LEGS, m_FallDamageData.m_BrokenLegsCoef);
        m_FallDamageData.m_BrokenLegsCoef = Math.Clamp(m_FallDamageData.m_BrokenLegsCoef, 0, 1);
 
        m_FallDamageData.m_BleedingHandsCoef = Math.InverseLerp(0, BLEEDINGHANDS_HEIGHT_LOW, pData.m_Height);
        m_FallDamageData.m_BleedingHandsCoef = Math.Clamp(m_FallDamageData.m_BleedingHandsCoef, 0, 1);
        
        m_FallDamageData.m_BleedingFeetCoef = Math.InverseLerp(0, BLEEDINGFEET_HEIGHT_LOW, pData.m_Height);
        m_FallDamageData.m_BleedingFeetCoef = Math.Clamp(m_FallDamageData.m_BleedingFeetCoef, 0, 1);
 
        m_FallDamageData.m_BleedingLegsCoef = Math.InverseLerp(0, BLEEDINGLEGS_HEIGHT_LOW, pData.m_Height);
        m_FallDamageData.m_BleedingLegsCoef = Math.Clamp(m_FallDamageData.m_BleedingLegsCoef, 0, 1);
        
        m_FallDamageData.m_GlovesHealthCoef = Math.InverseLerp(GLOVES_HEALTH_HEIGHT_LOW, GLOVES_HEALTH_HEIGHT_HIGH, pData.m_Height);
        m_FallDamageData.m_GlovesHealthCoef = Randomize(DAMAGE_TYPE_ATTACHMENTS, m_FallDamageData.m_GlovesHealthCoef);
        m_FallDamageData.m_GlovesHealthCoef = Math.Clamp(m_FallDamageData.m_GlovesHealthCoef, 0, 1);
        
        m_FallDamageData.m_ShoesHealthCoef = Math.InverseLerp(SHOES_HEALTH_HEIGHT_LOW, SHOES_HEALTH_HEIGHT_HIGH, pData.m_Height);
        m_FallDamageData.m_ShoesHealthCoef = Randomize(DAMAGE_TYPE_ATTACHMENTS, m_FallDamageData.m_ShoesHealthCoef);
        m_FallDamageData.m_ShoesHealthCoef = Math.Clamp(m_FallDamageData.m_ShoesHealthCoef, 0, 1);
        
        m_FallDamageData.m_PantsHealthCoef = Math.InverseLerp(PANTS_HEALTH_HEIGHT_LOW, PANTS_HEALTH_HEIGHT_HIGH, pData.m_Height);
        m_FallDamageData.m_PantsHealthCoef = Randomize(DAMAGE_TYPE_ATTACHMENTS, m_FallDamageData.m_PantsHealthCoef);
        m_FallDamageData.m_PantsHealthCoef = Math.Clamp(m_FallDamageData.m_PantsHealthCoef, 0, 1);
        
        m_FallDamageData.m_BleedingChanceCoef = Math.InverseLerp(BLEEDING_CHANCE_HEIGHT_LOW, BLEEDING_CHANCE_HEIGHT_HIGH, pData.m_Height);
        m_FallDamageData.m_BleedingChanceCoef = Math.Clamp(m_FallDamageData.m_BleedingChanceCoef, 0, 0.7);
        
        m_FallDamageData.m_BleedingChanceLegsCoef = 0.15;
        
        if (GetGame().IsServer())
        {
            PlayerBase playerBase = PlayerBase.Cast(m_Player);
            if (playerBase)
            {
                AttachBleedingToZonesByHeight(playerBase);
                DamageAttachedGear(playerBase);
                playerBase.DamageAllLegs(BROKENLEGS_HEALTH_DAMAGE_MAX * m_FallDamageData.m_BrokenLegsCoef);
            }
            
            vector posMS = m_Player.WorldToModel(m_Player.GetPosition());
 
            m_Player.ProcessDirectDamage(DT_CUSTOM, m_Player, "", FALL_DAMAGE_AMMO_HEALTH, posMS, m_FallDamageData.m_HealthCoef);
            m_Player.ProcessDirectDamage(DT_CUSTOM, m_Player, "", FALL_DAMAGE_AMMO_SHOCK, posMS, m_FallDamageData.m_ShockCoef);
 
            if (playerBase)
                playerBase.ForceUpdateInjuredState();
        }
    }
    
    private float Randomize(int pType, float pValue)
    {
        Math.Randomize(GetGame().GetTime());
        
        int randomizedSign = -1;
        if (Math.RandomIntInclusive(1, 2) % 2 == 1)
            randomizedSign = 1;
 
        float randomizationValue = 0;
        switch (pType)
        {
            case DAMAGE_TYPE_GLOBAL:
                randomizationValue = Math.RandomFloatInclusive(RANDOM_THRESHOLD_HEALTH_LOW, RANDOM_THRESHOLD_HEALTH_HIGH);
                break;
            case DAMAGE_TYPE_LEGS:
                randomizationValue = Math.RandomFloatInclusive(RANDOM_THRESHOLD_LEGS_LOW, RANDOM_THRESHOLD_LEGS_HIGH);
                break;
            case DAMAGE_TYPE_ATTACHMENTS:
                randomizationValue = Math.RandomFloatInclusive(RANDOM_THRESHOLD_ATTACHMENTS_LOW, RANDOM_THRESHOLD_ATTACHMENTS_HIGH);
                break;
        }
        
        return pValue + (randomizedSign * pValue * randomizationValue);
    }
    
    private void AttachBleedingToZonesByHeight(notnull PlayerBase pPlayer)
    {
        Math.Randomize(GetGame().GetTime());
 
            int bleedingSelectionIndex;
            BleedingSourcesManagerServer bleedingManager = pPlayer.GetBleedingManagerServer();
            if (Math.RandomFloatInclusive(0.0, 1.0) <= m_FallDamageData.m_BleedingChanceCoef && m_FallDamageData.m_BleedingHandsCoef == 1.0 && pPlayer.FindAttachmentBySlotName("Gloves") == null)
            {
                bleedingSelectionIndex = Math.RandomInt(0, 2);
                bleedingManager.AttemptAddBleedingSourceBySelection(BLEEDING_HANDS_SELECTIONS[bleedingSelectionIndex]);
            }
            
            if (Math.RandomFloatInclusive(0.0, 1.0) <= m_FallDamageData.m_BleedingChanceCoef && m_FallDamageData.m_BleedingFeetCoef == 1.0 && pPlayer.FindAttachmentBySlotName("Feet") == null)
            {
                
                bleedingSelectionIndex = Math.RandomInt(0, 2);
                bleedingManager.AttemptAddBleedingSourceBySelection(BLEEDING_FEET_SELECTIONS[bleedingSelectionIndex]);
            }   
            if (Math.RandomFloatInclusive(0.0, 1.0) <= m_FallDamageData.m_BleedingChanceLegsCoef && m_FallDamageData.m_BleedingLegsCoef == 1.0)
            {
                
                bleedingSelectionIndex = Math.RandomInt(0, 2);
                bleedingManager.AttemptAddBleedingSourceBySelection(BLEEDING_LEGS_SELECTIONS[bleedingSelectionIndex]);
            }
    }
    
    private void DamageAttachedGear(notnull PlayerBase pPlayer)
    {
        EntityAI gloves = pPlayer.FindAttachmentBySlotName("Gloves");
        if (gloves)
            gloves.ProcessDirectDamage(DT_CUSTOM, pPlayer, "", FALL_DAMAGE_AMMO_HEALTH_OTHER_ATTACHMENTS, gloves.WorldToModel(gloves.GetPosition()), m_FallDamageData.m_GlovesHealthCoef);
 
        EntityAI shoes = pPlayer.FindAttachmentBySlotName("Feet");
        if (shoes)
            shoes.ProcessDirectDamage(DT_CUSTOM, pPlayer, "", FALL_DAMAGE_AMMO_HEALTH_OTHER_ATTACHMENTS, shoes.WorldToModel(shoes.GetPosition()), m_FallDamageData.m_ShoesHealthCoef);
        
        EntityAI pants = pPlayer.FindAttachmentBySlotName("Legs");
        if (pants)
            pants.ProcessDirectDamage(DT_CUSTOM, pPlayer, "", FALL_DAMAGE_AMMO_HEALTH_ATTACHMENT, pants.WorldToModel(pants.GetPosition()), m_FallDamageData.m_PantsHealthCoef);
    }
 
#ifdef DIAG_DEVELOPER
    FallDamageDebugData GetFallDamageDebugData()
    {
        FallDamageDebugData data = new FallDamageDebugData();
        data.Synch(this);
 
        return data;
    }
    
    void ShowFallDamageDebugInfo(bool enabled)
    {
        FallDamageDebugData data = GetFallDamageDebugData();
        DisplayFallDamageDebugInfo(enabled, data);
    }
    
    private static string LandTypeToString(int landType)
    {
        switch (landType)
        {
            case 1:
                return "LIGHT";
            case 2:
                return "MEDIUM";
            case 3:
                return "HEAVY":
        }
        
        return "NONE";
    }
    
    private void PreloadAmmoTypeData()
    {
        if (m_AmmoTypeData == null)
            m_AmmoTypeData = new ref map<string, float>();
        
        m_AmmoTypeData.Insert(FALL_DAMAGE_AMMO_HEALTH, GetValuesFromAmmoType(FALL_DAMAGE_AMMO_HEALTH)[0]);
        m_AmmoTypeData.Insert(FALL_DAMAGE_AMMO_SHOCK, GetValuesFromAmmoType(FALL_DAMAGE_AMMO_SHOCK)[2]);
        m_AmmoTypeData.Insert(FALL_DAMAGE_AMMO_HEALTH_OTHER_ATTACHMENTS, GetValuesFromAmmoType(FALL_DAMAGE_AMMO_HEALTH_OTHER_ATTACHMENTS)[0]);
        m_AmmoTypeData.Insert(FALL_DAMAGE_AMMO_HEALTH_ATTACHMENT, GetValuesFromAmmoType(FALL_DAMAGE_AMMO_HEALTH_ATTACHMENT)[0]);
    }
    
    private vector GetValuesFromAmmoType(string pAmmoType)
    {
        vector values = vector.Zero;
        values[0] = GetGame().ConfigGetFloat(string.Format("CfgAmmo %1 DamageApplied Health damage", pAmmoType));
        values[1] = GetGame().ConfigGetFloat(string.Format("CfgAmmo %1 DamageApplied Blood damage", pAmmoType));
        values[2] = GetGame().ConfigGetFloat(string.Format("CfgAmmo %1 DamageApplied Shock damage", pAmmoType));
        
        return values;
    }
 
    static void DisplayFallDamageDebugInfo(bool enabled, FallDamageDebugData data)
    {
        int windowPosX = 10;
        int windowPosY = 200;
 
        DbgUI.Begin("Fall Damage (last)", windowPosX, windowPosY);
        if (enabled)
        {
            DbgUI.Text(string.Format("Height:\t%1", Math.Clamp(data.m_Height, 0, float.MAX)));
            DbgUI.Text(string.Format("Land Type:\t%1 (%2)", data.m_LandType, LandTypeToString(data.m_LandType)));
            DbgUI.Text("");
            DbgUI.Text("Health");
            DbgUI.Text(string.Format("  coef:%1 dmg:%2", data.m_HealthCoef, m_AmmoTypeData[FALL_DAMAGE_AMMO_HEALTH] * data.m_HealthCoef));
            DbgUI.Text("Shock");
            DbgUI.Text(string.Format("  coef:%1 dmg:%2", data.m_ShockCoef, m_AmmoTypeData[FALL_DAMAGE_AMMO_SHOCK] * data.m_ShockCoef));
            DbgUI.Text("Broken Legs:");
            DbgUI.Text(string.Format("  coef:%1 dmg:%2", data.m_BrokenLegsCoef, BROKENLEGS_HEALTH_DAMAGE_MAX * data.m_BrokenLegsCoef));
            DbgUI.Text("Gloves damage:");
            DbgUI.Text(string.Format("  coef:%1 dmg:%2", data.m_GlovesHealthCoef, m_AmmoTypeData[FALL_DAMAGE_AMMO_HEALTH_OTHER_ATTACHMENTS] * data.m_GlovesHealthCoef));
            DbgUI.Text("Shoes damage:");
            DbgUI.Text(string.Format("  coef:%1 dmg:%2", data.m_ShoesHealthCoef, m_AmmoTypeData[FALL_DAMAGE_AMMO_HEALTH_OTHER_ATTACHMENTS] * data.m_ShoesHealthCoef));
            DbgUI.Text("Pants damage:");
            DbgUI.Text(string.Format("  coef:%1 dmg:%2" , data.m_PantsHealthCoef, m_AmmoTypeData[FALL_DAMAGE_AMMO_HEALTH_ATTACHMENT] * data.m_PantsHealthCoef));
            DbgUI.Text("Bleeding coefs:");
            DbgUI.Text(string.Format("  hands:%1", data.m_BleedingHandsCoef));
            DbgUI.Text(string.Format("  feet:%1", data.m_BleedingFeetCoef));
            DbgUI.Text(string.Format("  legs:%1", data.m_BleedingLegsCoef));
            DbgUI.Text(string.Format("  H&F chance:%1", data.m_BleedingChanceCoef));
            
            
        }
        DbgUI.End();
    }
    
    void FillDebugFallDamageData(FallDamageDebugData data)
    {
        data.m_Height           = m_FallDamageData.m_Height;
        data.m_LandType         = m_FallDamageData.m_LandType;
        data.m_HealthCoef       = m_FallDamageData.m_HealthCoef;
        data.m_ShockCoef        = m_FallDamageData.m_ShockCoef;
        data.m_BrokenLegsCoef   = m_FallDamageData.m_BrokenLegsCoef;
        data.m_GlovesHealthCoef = m_FallDamageData.m_GlovesHealthCoef;
        data.m_ShoesHealthCoef  = m_FallDamageData.m_ShoesHealthCoef;
        data.m_PantsHealthCoef  = m_FallDamageData.m_PantsHealthCoef;
 
        data.m_BleedingHandsCoef    = m_FallDamageData.m_BleedingHandsCoef;
        data.m_BleedingFeetCoef     = m_FallDamageData.m_BleedingFeetCoef;
        data.m_BleedingLegsCoef     = m_FallDamageData.m_BleedingLegsCoef;
        data.m_BleedingChanceCoef   = m_FallDamageData.m_BleedingChanceCoef;
    }
#endif
    
    const string    FD_AMMO                 = "FallDamage"; 
    const float     FD_DMG_FROM_HEIGHT      = 2.5;          
    const float     FD_MAX_DMG_AT_HEIGHT    = 15;           
    const float     FD_MAX_HEIGHT_LEG_BREAK = 8;            
 
    void HandleFallDamage(float pHeight);
    float DamageCoef(float pHeight);
}
 
#ifdef DIAG_DEVELOPER
class FallDamageDebugData : Param
{
    int     m_LandType;
    float   m_Height;
    float   m_HealthCoef;
    float   m_ShockCoef;
    float   m_BrokenLegsCoef;
    float   m_GlovesHealthCoef;
    float   m_ShoesHealthCoef;
    float   m_PantsHealthCoef;
    float   m_BleedingHandsCoef;
    float   m_BleedingFeetCoef;
    float   m_BleedingLegsCoef;
    float   m_BleedingChanceCoef;
    
    void Synch(DayZPlayerImplementFallDamage fallDamage)
    {
        m_Height = fallDamage.GetHeight();
        m_LandType = fallDamage.GetLandType();
        
        fallDamage.FillDebugFallDamageData(this);
    }
    
    override bool Serialize(Serializer ctx)
    {
        return ctx.Write(m_Height) && ctx.Write(m_LandType) && ctx.Write(m_HealthCoef) && ctx.Write(m_ShockCoef) && ctx.Write(m_BrokenLegsCoef) && ctx.Write(m_GlovesHealthCoef) && ctx.Write(m_ShoesHealthCoef) && ctx.Write(m_PantsHealthCoef) && ctx.Write(m_BleedingHandsCoef) && ctx.Write(m_BleedingFeetCoef) && ctx.Write(m_BleedingLegsCoef);
    }
    
    override bool Deserializer(Serializer ctx)
    {
        return ctx.Read(m_Height) && ctx.Read(m_LandType) && ctx.Read(m_HealthCoef) && ctx.Read(m_ShockCoef) && ctx.Write(m_BrokenLegsCoef) && ctx.Read(m_GlovesHealthCoef) && ctx.Read(m_ShoesHealthCoef) && ctx.Read(m_PantsHealthCoef) && ctx.Read(m_BleedingHandsCoef) && ctx.Read(m_BleedingFeetCoef) && ctx.Read(m_BleedingLegsCoef);
    }
}
#endif