[Generation-X]

Code:

public OnPlayerText(playerid, text[])
{
 new string[256];
 new pName[32];
 GetPlayerName(playerid, pName, sizeof(pName));
 format(string, sizeof(string), "%s says: %s", pName, text);
 SendPlayerMessageToAll(-1, string);
 SetPlayerChatBubble(playerid, string, 0xFF0000FF, 100.0, 10000);
 return 0;
}

Edit Your own distance and expire time.