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Add basic game session support with WebSockets and dummy CSS.

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This commit is contained in:
Danila Fedorin 2018-05-25 13:48:01 -07:00
parent 00d5d19407
commit ff68f44d88
3 changed files with 132 additions and 9 deletions
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2
external/GoUI vendored

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Subproject commit e56560bccea5d321e6afec83f0e702478b5270e1 Subproject commit 0d31433b96e1f7e656243a44eaed97b01f8f7d80

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src/Go.cr
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require "./Go/*" require "./Go/*"
require "kemal" require "kemal"
require "json"
# TODO: Write documentation for `Go` enum Color
module Go Black
# TODO: Put your code here White
end
enum Size
Small = 9,
Medium = 13,
Large = 19
end
alias Board = Hash(Tuple(Int8, Int8), Color)
def cell_json(index, color, json)
json.object do
json.field "index" do
json.object do
json.field "x", index[0]
json.field "y", index[1]
end
end
json.field "color", color.to_s
end
end
def board_json(board, json)
json.array do
board.each do |key, value|
cell_json(key, value, json)
end
end
end
class Game
property size : Size
property board : Board
property turn : Color
property sockets : Array(HTTP::WebSocket)
def initialize(size : Size)
@size = size
@board = Board.new
@turn = Color::Black
@sockets = [] of HTTP::WebSocket
end
def to_string
JSON.build do |json|
json.object do
json.field "turn", @turn.to_s
json.field "board" { board_json(@board, json) }
end
end
end
def update(x, y, color)
@board[{x, y}] = color
end
end end
URL = "localhost" URL = "localhost"
GAME_CACHE = {} of Int64 => Game
get "/" do |env| def lookup_game(cache, id) : Game?
black = true return nil
id = 1
size = 9
render "src/Go/views/game.ecr"
end end
def handle_message(id, game, socket, message)
split_command = message.split(" ")
command = split_command[0]
if command == "place"
x = split_command[1].to_i8
y = split_command[2].to_i8
color = split_command[3] == "Black" ? Color::Black : Color::White
game.update(x, y, color)
game.sockets.each { |socket| socket.send game.to_string }
end
end
get "/" do |env|
"Hello!"
end
get "/game/:id" do |env|
if game_id = env.params.url["id"].to_i64?
if game = (GAME_CACHE[game_id]? || lookup_game(GAME_CACHE, game_id))
black = true
id = game_id
size = game.size.value
render "src/Go/views/game.ecr"
else
render_404
end
else
render_404
end
end
ws "/game/:id" do |socket, env|
if game_id = env.params.url["id"].to_i64?
if game = (GAME_CACHE[game_id]? || lookup_game(GAME_CACHE, game_id))
socket.send game.to_string
game.sockets << socket
socket.on_message do |message|
game.try { |game| handle_message(game_id, game, socket, message) }
end
socket.on_close do
game.try { |game| game.sockets.delete socket }
end
else
render_404
end
else
render_404
end
end
GAME_CACHE[1_i64] = Game.new(Size::Small)
Kemal.run Kemal.run

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src/Go/views/game.ecr
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<html> <html>
<head> <head>
<style>
.board-cell {
display: inline-block;
background-color: #eaeaea;
padding: 20px;
}
.black-cell {
background-color: black;
}
.board {
max-width: 360px;
}
</style>
</head> </head>
<body> <body>
<div id="elm-root"></div> <div id="elm-root"></div>