tf2-scripts/friendly_fire_toggle.sp

#include <sourcemod>
#include <tf2>

public Plugin myinfo = 
{
    name = "Toggle Friendly Fire",
    author = "Retard",
    description = "Toggles Friendly Fire On/Off at random moments.",
    version = "1.0",
    url = "https://deadzone.lol"
};

Handle timerToggleFFOn = null;
Handle timerToggleFFOff = null;
bool g_bFriendlyFire = false;
bool g_bPluginEnabled = true;

public void OnPluginStart()
{
    RegConsoleCmd("sm_friendlyfire", CmdToggleFriendlyFire, "Toggle the Friendly Fire script. Admins with 'z' flag only.");
    StartFFOnTimer();
}

public Action CmdToggleFriendlyFire(int client, int args)
{
    if (CheckCommandAccess(client, "sm_friendlyfire", ADMFLAG_ROOT))
    {
        g_bPluginEnabled = !g_bPluginEnabled;

        if (g_bPluginEnabled)
        {
            PrintToChat(client, "Friendly Fire script has been enabled!");
            StartFFOnTimer();
        }
        else
        {
            if (g_bFriendlyFire)
            {
                Handle hCvar = FindConVar("mp_friendlyfire");
                if (hCvar != INVALID_HANDLE)
                {
                    SetConVarInt(hCvar, 0);
                }
                g_bFriendlyFire = false;
                PrintToChatAll("[DEBUG] Friendly Fire is now OFF");
            }
            
            PrintToChat(client, "Friendly Fire script has been disabled!");

            if (timerToggleFFOn != null)
            {
                KillTimer(timerToggleFFOn);
                timerToggleFFOn = null;
            }
            
            if (timerToggleFFOff != null)
            {
                KillTimer(timerToggleFFOff);
                timerToggleFFOff = null;
            }
        }
    }
    else
    {
        PrintToChat(client, "You do not have permission to use this command.");
    }
    return Plugin_Handled;
}

void StartFFOnTimer()
{
    if (!g_bPluginEnabled)
        return;

    if (timerToggleFFOn != null)
        KillTimer(timerToggleFFOn);

    float randomTimeToTurnOn = GetRandomFloat(60.0, 600.0);  // Between 1 and 10 minutes
    timerToggleFFOn = CreateTimer(randomTimeToTurnOn, TurnOnFriendlyFire);
}

public Action TurnOnFriendlyFire(Handle timer, any data)
{
    g_bFriendlyFire = true;
    
    Handle hCvar = FindConVar("mp_friendlyfire");
    if(hCvar == INVALID_HANDLE)
    {
        SetFailState("Failed to find 'mp_friendlyfire' cvar!");
    }
    SetConVarInt(hCvar, 1);
    
    PrintToChatAll("[DEBUG] Friendly Fire is now ON");

    StartFFOffTimer();

    return Plugin_Continue;
}

void StartFFOffTimer()
{
    if (timerToggleFFOff != null)
        KillTimer(timerToggleFFOff);

    float randomTimeToTurnOff = GetRandomFloat(30.0, 150.0);  // Between 30 seconds and 2.5 minutes
    timerToggleFFOff = CreateTimer(randomTimeToTurnOff, TurnOffFriendlyFire);
}

public Action TurnOffFriendlyFire(Handle timer, any data)
{
    g_bFriendlyFire = false;

    Handle hCvar = FindConVar("mp_friendlyfire");
    if(hCvar == INVALID_HANDLE)
    {
        SetFailState("Failed to find 'mp_friendlyfire' cvar!");
    }
    SetConVarInt(hCvar, 0);
    
    PrintToChatAll("[DEBUG] Friendly Fire is now OFF");

    StartFFOnTimer();

    return Plugin_Continue;
}

public void OnPluginEnd()
{
    if(timerToggleFFOn != null)
    {
        KillTimer(timerToggleFFOn);
    }
    if(timerToggleFFOff != null)
    {
        KillTimer(timerToggleFFOff);
    }
}