l4d2_who_was_start_panic.sp

/* Left 4 Dead 2 Panic Events */
#include <sourcemod>

public OnPluginStart()
{
    /* Hook Panic Create event after it has happened */
    HookEvent("create_panic_event", OnPanicCreate);
    /* Hook Left Player event after it has happened */
    HookEvent("player_left_start_area", OnPlayerLeftStartArea);
}

public Action:OnPanicCreate(Handle:event, const String:name[], bool:dontBroadcast)
{
    /* Copy the UserID from the event over */
    new uId = GetEventInt(event, "userid");
    /* Now get the person's name */
    new client = GetClientOfUserId(uId);
    if (client > 0 && IsClientInGame(client)) {
                new String:cName[MAX_NAME_LENGTH];
                GetClientName(client, cName, sizeof(cName));
                /* Now tell everyone who created the event */
                PrintToChatAll("\x03[Panic Event]\x01 %s created a panic event!", cName);
    }
}

public Action:OnPlayerLeftStartArea(Handle:event, const String:name[], bool:dontBroadcast)
{
    /* Copy the UserID from the event over */
    new uId = GetEventInt(event, "userid");
    /* Now get the person's name */
    new client = GetClientOfUserId(uId);
    if (client > 0 && IsClientInGame(client)) {
                new String:cName[MAX_NAME_LENGTH];
                GetClientName(client, cName, sizeof(cName));
                /* Now tell everyone who created the event */
                PrintToChatAll("\x03[Panic Event]\x01 %s was the first one out of the safe area!", cName);
    }
}