#include <sdktools>
#include <sdkhooks>

#pragma newdecls required
#pragma semicolon 1

public void OnPluginStart()
{
    HookEvent("player_hurt", EventHurt);
}

public Action EventHurt(Handle event, const char[] name, bool dontbroadcast)
{
    int victim = GetClientOfUserId(GetEventInt(event, "userid"));
    int damage = GetEventInt(event, "dmg_health");
    if(bIsSurvivor(victim))
    {
        int HP = GetClientHealth(victim);
        float HealBuf = GetEntPropFloat(victim, Prop_Send, "m_healthBuffer");
        float HealBuff = HP + HealBuf;
        int vForward;
        if(HealBuff - damage < 0)
        {
            vForward = RoundToCeil(HealBuff - damage) * -1;
            DataPack vPack;
            CreateDataTimer(0.1, vApply, vPack, TIMER_DATA_HNDL_CLOSE);
            WritePackCell(vPack, vForward);
            WritePackCell(vPack, victim);
        }
    }
}

public Action vApply(Handle timer, DataPack vPack)
{
    ResetPack(vPack);
    int iAwfull = ReadPackCell(vPack);
    int clinet = ReadPackCell(vPack);
    ForceDamageEntity(clinet, iAwfull, clinet);
}

stock bool bIsSurvivor(int client)
{
    return client > 0 && client <= MaxClients && IsClientInGame(client) && GetClientTeam(client) == 2 && !IsClientInKickQueue(client) && IsPlayerAlive(client);
}

stock void ForceDamageEntity(int causer, int damage, int victim) // thanks to 达斯*维达
{
    float victim_origin[3];
    char rupture[32];
    char damage_victim[32];
    IntToString(damage, rupture, sizeof(rupture));
    Format(damage_victim, sizeof(damage_victim), "hurtme%d", victim);
    GetEntPropVector(victim, Prop_Send, "m_vecOrigin", victim_origin);
    int entity = CreateEntityByName("point_hurt");
    DispatchKeyValue(victim, "targetname", damage_victim);
    DispatchKeyValue(entity, "DamageTarget", damage_victim);
    DispatchKeyValue(entity, "Damage", rupture);
    DispatchSpawn(entity);
    TeleportEntity(entity, victim_origin, NULL_VECTOR, NULL_VECTOR);
    AcceptEntityInput(entity, "Hurt", (causer > 0 && causer <= MaxClients) ? causer : -1);
    DispatchKeyValue(entity, "classname", "point_hurt");
    DispatchKeyValue(victim, "targetname", "null");
    AcceptEntityInput(entity, "Kill");
}