Makes a player spectate (watch) another player.
|playerid||The ID of the player that will spectate.|
|targetplayerid||The ID of the player that should be spectated.|
|mode||The mode to spectate with (optional; defaults to 'normal').|
1: The function was executed successfully.
0: The function failed to execute. One of the players specified does not exist.
Order is CRITICAL! Ensure that you use TogglePlayerSpectating before PlayerSpectatePlayer. playerid and targetplayerid's virtual world and interior must be the same for this function to work properly.