#pragma semicolon 1
#pragma newdecls required

#include <sdktools>
#include <sdkhooks>

Handle sdkSetAttack;

float weapon_autoshotgun = 1650.0;
float weapon_hunting_rifle = 660.0;
float weapon_pistol = 880.0;
float weapon_pistol_magnum = 1980.0;
float weapon_pumpshotgun = 1650.0;
float weapon_rifle = 1100.0;
float weapon_rifle_ak47 = 1100.0;
float weapon_rifle_desert = 1100.0;
float weapon_rifle_m60 = 1320.0;
float weapon_rifle_sg552 = 1100.0;
float weapon_shotgun_chrome = 1540.0;
float weapon_shotgun_spas = 1540.0;
float weapon_smg = 880.0;
float weapon_smg_mp5 = 880.0;
float weapon_smg_silenced = 880.0;
float weapon_sniper_awp = 1100.0;
float weapon_sniper_military = 1320.0;
float weapon_sniper_scout = 1320.0;

float weapon_grenade_launcher  = 2200.0;
float weapon_pipe_bomb = 2200.0;

int iChance = 2;

public void OnPluginStart()
{
    Handle hGameConf = LoadGameConfigFile("SetAttackSurvivorCommons");
    StartPrepSDKCall(SDKCall_Entity);
    if( PrepSDKCall_SetFromConf(hGameConf, SDKConf_Signature, "SetAttackToSurvivors") == false )
        SetFailState("Could not load the \"SetAttackToSurvivors\" gamedata signature.");
    sdkSetAttack = EndPrepSDKCall();

    HookEvent("non_melee_fired", EventFire);
}

public Action EventFire(Handle event, const char[] name, bool dontbroadcast)
{
    int client = GetClientOfUserId(GetEventInt(event, "userid"));
    int weapon = GetEntPropEnt(client, Prop_Send, "m_hActiveWeapon");
    if(!IsValidEntity(weapon)) return Plugin_Continue;

    char weaponname[36];
    GetEntityClassname(weapon, weaponname, sizeof(weaponname));
    if(bIsSurvivor(client))
    {
        float vPos[3], vTargetPos[3];
        GetClientEyePosition(client, vPos);
        if(strcmp(weaponname, "weapon_autoshotgun") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_autoshotgun)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_autoshotgun)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_hunting_rifle") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_hunting_rifle)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_hunting_rifle)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_pistol") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_pistol)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_pistol)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_pistol_magnum") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_pistol_magnum)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_pistol_magnum)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_pumpshotgun") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_pumpshotgun)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_pumpshotgun)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_rifle") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_rifle)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_rifle)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_rifle_ak47") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_rifle_ak47)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_rifle_ak47)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_rifle_desert") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_rifle_desert)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_rifle_desert)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_rifle_m60") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_rifle_m60)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_rifle_m60)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_rifle_sg552") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_rifle_sg552)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_rifle_sg552)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_shotgun_chrome") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_shotgun_chrome)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_shotgun_chrome)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_shotgun_spas") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_shotgun_spas)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_shotgun_spas)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_smg") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_smg)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_smg)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_smg_mp5") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_smg_mp5)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_smg_mp5)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_smg_silenced") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_smg_silenced)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_smg_silenced)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_sniper_awp") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_sniper_awp)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_sniper_awp)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_sniper_military") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_sniper_military)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_sniper_military)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
        else if(strcmp(weaponname, "weapon_sniper_scout") == 0)
        {
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(IsVisibleTo(vPos, vTargetPos))
                    {
                        if(fTargetDistance < weapon_sniper_scout)
                        {
                            SDKCall(sdkSetAttack, i);
                        }
                    }
                    else
                    {
                        if(GetRandomInt(0, 100) <= iChance)
                        {
                            if(fTargetDistance < weapon_sniper_scout)
                            {
                                SDKCall(sdkSetAttack, i);
                            }
                        }
                    }
                }
            }
        }
    }
    return Plugin_Continue;
}

public void OnEntityDestroyed(int entity)
{
    if(IsValidEntity(entity) && IsValidEdict(entity))
    {
        char sTypeEx[36];
        GetEntityClassname(entity, sTypeEx, sizeof(sTypeEx));
        if(strcmp(sTypeEx, "grenade_launcher_projectile") == 0)
        {
            float vPos[3], vTargetPos[3];
            GetEntPropVector(entity, Prop_Send, "m_vecOrigin", vPos);
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
               {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(fTargetDistance <= weapon_grenade_launcher)
                    {
                        SDKCall(sdkSetAttack, i);
                    }
                }
            }
        }
        else if(strcmp(sTypeEx, "pipe_bomb_projectile") == 0)
       {
            float vPos[3], vTargetPos[3];
            GetEntPropVector(entity, Prop_Send, "m_vecOrigin", vPos);
            for(int i = 33; i <= 2048; i++)
            {
                if(IsCommonInfected(i))
                {
                    GetEntPropVector(i, Prop_Send, "m_vecOrigin", vTargetPos);
                    float fTargetDistance = GetVectorDistance(vPos, vTargetPos);
                    if(fTargetDistance <= weapon_pipe_bomb)
                    {
                        SDKCall(sdkSetAttack, i);
                    }
                }
            }
        }
    }
}

static bool IsVisibleTo(float position[3], float targetposition[3])
{
    float vAngles[3], vLookAt[3];

    MakeVectorFromPoints(position, targetposition, vLookAt);
    GetVectorAngles(vLookAt, vAngles);

    Handle trace = TR_TraceRayFilterEx(position, vAngles, MASK_SHOT, RayType_Infinite, _TraceFilter);

    bool isVisible = false;
    if (TR_DidHit(trace))
    {
        float vStart[3];
        TR_GetEndPosition(vStart, trace);

        if ((GetVectorDistance(position, vStart, false) + 25.0) >= GetVectorDistance(position, targetposition))
        {
            isVisible = true;
        }
    }

    return isVisible;
}

public bool _TraceFilter(int entity, int contentsMask)
{
    if (IsValidEntity(entity))
    {
        return false;
    }
    return true;
}

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

stock bool IsCommonInfected(int entity)
{
    if (entity > 33 && IsValidEntity(entity) && IsValidEdict(entity))
    {
        char entType[64];
        GetEdictClassname(entity, entType, sizeof(entType));
        return StrEqual(entType, "infected");
    }
    return false;
}