make a nuke
(ontop of the script) new Float

, Float:y, Float:z;
if ( strcmp( cmd, "/nuke", true ) == 0 )
    {
    if(!IsPlayerAdmin(playerid)) return SendClientMessage(playerid, 0xFFFFFFFF, "SERVER: Unknown command.");
         new tmp[256];
	    tmp = strtok( cmdtext, idx );
	    if ( !strlen( tmp ) ) { return 1; }
	    if ( GetPlayerVehicleID( strval(tmp) ) )
	    {
	        CreateExplosion(x,y,z,100); <- do a couple of those and if you want the explosion just to the side or top of the player use it like this CreateExplosion(x,y,z+10,100); now it will be 10 higher
                SetPlayerHealth(strval(tmp), 0);
	    } else {
             CreateExplosion(x,y,z,100);
	     SetPlayerHealth(strval(tmp), 0);   
	    }
	    return 1;
	}