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// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
protocol TennisService {
GetState() -> (GameState state);
RegisterPaddle(string player_name, Paddle paddle);
struct GameState {
float64 ballX;
float64 ballY;
float64 player_1_y; // player 1 is on the left side of the screen
float64 player_2_y;
int64 player_1_score;
int64 player_2_score;
int64 time; // start of each game is zero, represents in-game time steps elapsed
int64 game_num; // increments by one any time a new game starts, 0 if not enough players yet
string player_1_name;
string player_2_name;
protocol Paddle {
NewGame(bool is_player_2);
-> Up();
-> Down();
-> Stop();