A Framework for Adaptive Game Presenters with Emotions and Social Comments

Table 3

The most common messages of the communication protocol (API) for Trivia games.

Message ID	Message content	Explanation
Start game	Number of players	New game session begins
End game	—	Current game session ends
Turn begins	Player Id, turn number	Notifies the presenter about the current player (whose turn begins now)
Turn ends	Player Id, turn number, answered correctly, time up	Notifies the presenter that a player have just finished their turn. Also informs the presenter why the turn ended (player gave an answer or time was up)
Question	For player Id, category, type, Is checkpoint, time to answer	Notifies the presenter that a question for player X has been asked. The Category of the question (e.g., history) and the question type (e.g., multiple choices) must be known, along with how much time has the player to answer
Player pressed buzzer	Player Id, time	Notifies the presenter whenever a player presses their buzzer. The presenter can compare the time from such events and comment on player reflexes
Player asks help	Player Id, help type, helps left	Notifies the presenter that a player has asked for help
Player reached checkpoint	Player Id, check point Id	Notifies the presenter that a player has reached a checkpoint in the game
Score (Money) changed	Player Id, amount	Notifies the presenter whenever a player gains or losses score (or money)
Pause/Resume	Is paused	The game is paused/resumed