[TnTSCS]

Here's another example of working with timers you want to execute only if certain conditions apply... like resetting every round_start event

code

PHP Code:

new Handle:GodOff = INVALID_HANDLE;
new Handle:GiveBeacon = INVALID_HANDLE;

public Action:Event_Round_Start(Handle:event, const String:name[], bool:dontBroadcast) 
{
    ClearTimer(GiveBeacon);
    ClearTimer(GodOff);
   
   for (new i = 1; i <= MaxClients; i++)
    {
        if (IsClientInGame(i) && IsPlayerAlive(i))
        {
            SetEntProp(i, Prop_Data, "m_takedamage", 0, 1);
        }
    }
    
    GodOff = CreateTimer(60.0, GodOff)
}

public Action:GodOff(Handle:timer)
{
    if (GodOff != INVALID_HANDLE)
    {
        GodOff = INVALID_HANDLE;
        
        for (new i = 1; i <= MaxClients; i++)
        {
            SetEntProp(i, Prop_Data, "m_takedamage", 2, 1);
        }
        
        GiveBeacon = CreateTimer(90.0, GiveBeacon);
    }
}

public Action:GiveBeacon(Handle:timer)
{
    if (GiveBeacon != INVALID_HANDLE)
    {
        GiveBeacon = INVALID_HANDLE;
        
        ServerCommand("sm_beacon @all");
        CreateTimer(90.0, blabla...);
    }
}

/**
 * Function to clear/kill the timer and set to INVALID_HANDLE if it's still active
 * 
 * @param    timer        Handle of the timer
 * @noreturn
 */
ClearTimer(&Handle:timer)
{
    if (timer != INVALID_HANDLE)
    {
        KillTimer(timer);
        timer = INVALID_HANDLE;
    }     
}