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can play game

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This commit is contained in:
Alex Mickelson
2026-03-02 13:39:18 -07:00
parent 9955a7f90c
commit 0dae393d0d
27 changed files with 856 additions and 474 deletions
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3
.vscode/settings.json vendored Normal file
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@@ -0,0 +1,3 @@
{
"css.lint.unknownAtRules": "ignore"
}

12
AGENTS.md Normal file
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@@ -0,0 +1,12 @@
<project-structure>
/client has a react typescript pnpm app with tailwindcss
- always inline prop definitions in function call
- use react FC<> components
- custom navy theme colors defined in index.css
- never use white or black, make text light navy and background dark navy
/backend
- elixir phoenix websocket server
- runs highly available in a cluster (dev environment in docker-compose.yml)
</project-structure>

12
README.md Normal file
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@@ -0,0 +1,12 @@
distribute persistent share tables with mnesia
resources:
Channels: <https://hexdocs.pm/phoenix/channels.html>
- 1 channel per browser instance

11
backend/lib/backend/application.ex
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@@ -1,28 +1,17 @@
defmodule Backend.Application do
# See https://hexdocs.pm/elixir/Application.html
# for more information on OTP Applications
@moduledoc false
use Application
@impl true
def start(_type, _args) do
children = [
BackendWeb.Telemetry,
{DNSCluster, query: Application.get_env(:backend, :dns_cluster_query) || :ignore},
{Phoenix.PubSub, name: Backend.PubSub},
# Start the Cluster manager for distributed Erlang
Backend.Cluster,
# Use GlobalSingleton supervisor for instant failover
{Backend.GlobalSingleton, Backend.GameState},
# Start a worker by calling: Backend.Worker.start_link(arg)
# {Backend.Worker, arg},
# Start to serve requests, typically the last entry
BackendWeb.Endpoint
]
# See https://hexdocs.pm/elixir/Supervisor.html
# for other strategies and supported options
opts = [strategy: :one_for_one, name: Backend.Supervisor]
Supervisor.start_link(children, opts)
end

35
backend/lib/backend/cluster.ex
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@@ -33,40 +33,27 @@ defmodule Backend.Cluster do
end
defp connect_to_cluster do
# Get all cluster nodes and exclude ourselves
all_nodes =
self_node = node()
cluster_nodes =
System.get_env("CLUSTER_NODES", "")
|> String.split(",", trim: true)
|> Enum.map(&String.to_atom/1)
|> Enum.filter(&(&1 != self_node))
cluster_nodes = Enum.reject(all_nodes, &(&1 == node()))
connection_attempts =
cluster_nodes
|> Enum.map(&%{node: &1, status: Node.connect(&1)})
failures =
Enum.filter(cluster_nodes, fn node_name ->
case Node.connect(node_name) do
true ->
# Logger.debug("Connected to node: #{node_name}")
false
false ->
Logger.warning("Failed to connect to node: #{node_name}")
true
:ignored ->
# Already connected, not a failure
false
end
end)
connection_attempts
|> Enum.filter(fn %{status: status} -> status == false end)
connected_nodes = Node.list()
# Expected count is other nodes (not including ourselves)
expected_count = length(cluster_nodes)
actual_count = length(connected_nodes)
if failures != [] or actual_count < expected_count do
if failures != [] or length(connected_nodes) < length(cluster_nodes) do
Logger.warning(
"Cluster status: #{actual_count}/#{expected_count} nodes connected: #{inspect(connected_nodes)}"
"Cluster status: #{length(connected_nodes)}/#{length(cluster_nodes)} nodes connected: #{inspect(connected_nodes)}"
)
end
end

38
backend/lib/backend/game_state.ex
View File

@@ -10,6 +10,7 @@ defmodule Backend.GameState do
@name {:global, __MODULE__}
@pubsub Backend.PubSub
@topic "game_state"
@fps 30
# Client API
@@ -39,6 +40,10 @@ defmodule Backend.GameState do
GenServer.cast(@name, {:move_player, player_id, directions})
end
def update_player_keys(player_id, keys_pressed) do
GenServer.cast(@name, {:update_player_keys, player_id, keys_pressed})
end
def get_state do
GenServer.call(@name, :get_state)
end
@@ -48,6 +53,9 @@ defmodule Backend.GameState do
@impl true
def init(_) do
Logger.info("GameState starting on node: #{node()}")
sleep_delay = round(1000 / @fps)
:timer.send_interval(sleep_delay, :tick)
{:ok, %{}}
end
@@ -57,32 +65,40 @@ defmodule Backend.GameState do
x = :rand.uniform(800)
y = :rand.uniform(600)
new_state = Map.put(state, player_id, %{x: x, y: y})
new_state = Map.put(state, player_id, %{x: x, y: y, keys_pressed: []})
broadcast_state(new_state)
{:reply, new_state, new_state}
end
@impl true
def handle_cast({:move_player, player_id, directions}, state) do
Logger.info("Processing player move")
def handle_cast({:update_player_keys, player_id, keys_pressed}, state) do
player =
case Map.get(state, player_id) do
nil ->
Logger.warning(
"Move attempted for non-existent player: #{player_id}, creating at random position"
"Key update for non-existent player: #{player_id}, creating at random position"
)
%{x: :rand.uniform(800), y: :rand.uniform(600)}
%{x: :rand.uniform(800), y: :rand.uniform(600), keys_pressed: keys_pressed}
existing_player ->
existing_player
Map.put(existing_player, :keys_pressed, keys_pressed)
end
new_state = Map.put(state, player_id, player)
broadcast_state(new_state)
{:noreply, new_state}
end
@impl true
def handle_info(:tick, state) do
# On each tick, move players based on their keys_pressed
new_state =
Enum.reduce(state, state, fn {player_id, player}, acc ->
directions = player.keys_pressed || []
step = 10
# Apply all directions to calculate final position
new_position =
new_player =
Enum.reduce(directions, player, fn direction, acc ->
case direction do
"w" -> %{acc | y: max(0, acc.y - step)}
@@ -93,7 +109,9 @@ defmodule Backend.GameState do
end
end)
new_state = Map.put(state, player_id, new_position)
Map.put(acc, player_id, new_player)
end)
broadcast_state(new_state)
{:noreply, new_state}
end

25
backend/lib/backend/lobby_tracker.ex Normal file
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@@ -0,0 +1,25 @@
defmodule Backend.LobbyTracker do
use GenServer
require Logger
@name {:global, __MODULE__}
def start_link(_opts) do
GenServer.start_link(__MODULE__, %{}, name: @name)
end
def get_lobbies do
GenServer.call(@name, :get_lobbies)
end
@impl true
def init(_) do
Logger.info("LobbyTracker started on node: #{node()}")
{:ok, %{}}
end
@impl true
def handle_call(:get_lobbies, _from, state) do
{:reply, state, state}
end
end

118
backend/lib/backend_web/channels/connected_user_channel.ex Normal file
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@@ -0,0 +1,118 @@
defmodule BackendWeb.ConnectedUserChannel do
@moduledoc """
Manages requests that come in from browser
"""
use BackendWeb, :channel
require Logger
@impl true
def join("user:" <> user_name, _params, %{assigns: %{user_name: socket_user}} = socket)
when user_name == socket_user do
Logger.info("WebSocket connected to #{node()}, user: #{user_name}")
Phoenix.PubSub.subscribe(Backend.PubSub, "game_state")
Phoenix.PubSub.subscribe(Backend.PubSub, "user_sessions:#{user_name}")
# Notify other sessions for this user
Phoenix.PubSub.broadcast_from(
Backend.PubSub,
self(),
"user_sessions:#{user_name}",
:new_browser_connection
)
current_state = Backend.GameState.get_state()
{:ok, %{game_state: current_state}, socket}
end
def join("user:" <> user_name, _params, %{assigns: %{user_name: socket_user}}) do
Logger.warning("User #{socket_user} attempted to join channel for #{user_name}")
{:error, %{reason: "unauthorized"}}
end
def join(_topic, _params, _socket) do
{:error, %{reason: "authentication required"}}
end
@impl true
def handle_info({:game_state_updated, state}, socket) do
push(socket, "game_state", %{game_state: state})
{:noreply, socket}
end
@impl true
def handle_info(:new_browser_connection, socket) do
Logger.warning("New browser connection detected for user: #{socket.assigns.user_name}")
push(socket, "new_browser_connection", %{})
{:noreply, socket}
end
@impl true
def handle_in("join_game", %{"name" => name}, socket) do
Logger.info("Player '#{name}' joining game on #{node()}")
socket =
socket
|> assign(:player_name, name)
|> assign(:keys_pressed, MapSet.new())
Backend.GameState.add_player(name)
{:reply, :ok, socket}
end
@impl true
def handle_in("key_down", %{"key" => key}, socket) do
case socket.assigns[:player_name] do
nil ->
Logger.warning("Key down attempted without joining game")
{:noreply, socket}
player_name ->
keys_pressed = MapSet.put(socket.assigns[:keys_pressed] || MapSet.new(), key)
socket = assign(socket, :keys_pressed, keys_pressed)
Logger.debug(
"Player '#{player_name}' key down: #{key}, keys: #{inspect(MapSet.to_list(keys_pressed))}"
)
Backend.GameState.update_player_keys(player_name, MapSet.to_list(keys_pressed))
{:noreply, socket}
end
end
@impl true
def handle_in("key_up", %{"key" => key}, socket) do
case socket.assigns[:player_name] do
nil ->
Logger.warning("Key up attempted without joining game")
{:noreply, socket}
player_name ->
keys_pressed = MapSet.delete(socket.assigns[:keys_pressed] || MapSet.new(), key)
socket = assign(socket, :keys_pressed, keys_pressed)
Logger.debug(
"Player '#{player_name}' key up: #{key}, keys: #{inspect(MapSet.to_list(keys_pressed))}"
)
Backend.GameState.update_player_keys(player_name, MapSet.to_list(keys_pressed))
{:noreply, socket}
end
end
@impl true
def terminate(_reason, socket) do
case socket.assigns[:player_name] do
nil ->
Logger.info("WebSocket disconnected from #{node()}")
player_name ->
Logger.info("Player '#{player_name}' disconnected from #{node()}")
Backend.GameState.remove_player(player_name)
end
:ok
end
end

60
backend/lib/backend_web/channels/game_channel.ex
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@@ -1,60 +0,0 @@
defmodule BackendWeb.GameChannel do
@moduledoc """
Channel for handling game events and player movements.
"""
use BackendWeb, :channel
require Logger
@impl true
def join("game:lobby", _payload, socket) do
Logger.info("WebSocket connected to #{node()}, waiting for name")
Phoenix.PubSub.subscribe(Backend.PubSub, "game_state")
current_state = Backend.GameState.get_state()
{:ok, %{players: current_state}, socket}
end
@impl true
def handle_info({:game_state_updated, state}, socket) do
push(socket, "game_state", %{players: state})
{:noreply, socket}
end
@impl true
def handle_in("join_game", %{"name" => name}, socket) do
Logger.info("Player '#{name}' joining game on #{node()}")
socket = assign(socket, :player_name, name)
Backend.GameState.add_player(name)
{:reply, :ok, socket}
end
@impl true
def handle_in("move", %{"directions" => directions}, socket) do
case socket.assigns[:player_name] do
nil ->
Logger.warning("Move attempted without joining game")
{:noreply, socket}
player_name ->
Logger.debug("Player '#{player_name}' moved #{inspect(directions)} on #{node()}")
Backend.GameState.move_player(player_name, directions)
{:noreply, socket}
end
end
@impl true
def terminate(_reason, socket) do
case socket.assigns[:player_name] do
nil ->
Logger.info("WebSocket disconnected from #{node()}")
player_name ->
Logger.info("Player '#{player_name}' disconnected from #{node()}")
Backend.GameState.remove_player(player_name)
end
:ok
end
end

39
backend/lib/backend_web/channels/user_socket.ex
View File

@@ -1,36 +1,27 @@
defmodule BackendWeb.UserSocket do
use Phoenix.Socket
require Logger
# A Socket handler
#
# It's possible to control the websocket connection and
# assign values that can be accessed by your channel topics.
## Channels
channel("game:*", BackendWeb.GameChannel)
channel("user:*", BackendWeb.ConnectedUserChannel)
# Socket params are passed from the client and can
# be used to verify and authenticate a user. After
# verification, you can put default assigns into
# the socket that will be set for all channels, ie
#
# {:ok, assign(socket, :user_id, verified_user_id)}
#
# To deny connection, return `:error` or `{:error, term}`.
@impl true
def connect(_params, socket, _connect_info) do
{:ok, socket}
def connect(%{"user_name" => user_name}, socket, _connect_info) do
{:ok, assign(socket, :user_name, user_name)}
end
def connect(_params, _socket, _connect_info) do
Logger.warning("WebSocket connection rejected: user_name required")
{:error, %{reason: "user_name required"}}
end
# Socket id's are topics that allow you to identify all sockets for a given user:
#
# def id(socket), do: "user_socket:#{socket.assigns.user_id}"
#
# Would allow you to broadcast a "disconnect" event and terminate
# all active sockets and channels for a given user:
#
#
# Returning `nil` makes this socket anonymous.
@impl true
def id(%{assigns: %{user_name: user_name}}) do
# assign websocket to user name
# allows other parts of app to manipulate all sockets for a given user
"user_socket:#{user_name}"
end
def id(_socket), do: nil
end

11
backend/priv/gettext/en/LC_MESSAGES/errors.po
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@@ -1,11 +0,0 @@
## `msgid`s in this file come from POT (.pot) files.
##
## Do not add, change, or remove `msgid`s manually here as
## they're tied to the ones in the corresponding POT file
## (with the same domain).
##
## Use `mix gettext.extract --merge` or `mix gettext.merge`
## to merge POT files into PO files.
msgid ""
msgstr ""
"Language: en\n"

10
backend/priv/gettext/errors.pot
View File

@@ -1,10 +0,0 @@
## This is a PO Template file.
##
## `msgid`s here are often extracted from source code.
## Add new translations manually only if they're dynamic
## translations that can't be statically extracted.
##
## Run `mix gettext.extract` to bring this file up to
## date. Leave `msgstr`s empty as changing them here has no
## effect: edit them in PO (`.po`) files instead.

5
client/package.json
View File

@@ -10,9 +10,12 @@
"preview": "vite preview"
},
"dependencies": {
"@tailwindcss/vite": "^4.2.1",
"phoenix": "^1.8.4",
"react": "^19.2.0",
"react-dom": "^19.2.0"
"react-dom": "^19.2.0",
"tailwindcss": "^4.2.1",
"zod": "^4.3.6"
},
"devDependencies": {
"@eslint/js": "^9.39.1",

404
client/pnpm-lock.yaml generated
View File

@@ -8,6 +8,9 @@ importers:
.:
dependencies:
'@tailwindcss/vite':
specifier: ^4.2.1
version: 4.2.1(vite@7.3.1(@types/node@24.10.13)(jiti@2.6.1)(lightningcss@1.31.1))
phoenix:
specifier: ^1.8.4
version: 1.8.4
@@ -17,6 +20,12 @@ importers:
react-dom:
specifier: ^19.2.0
version: 19.2.4(react@19.2.4)
tailwindcss:
specifier: ^4.2.1
version: 4.2.1
zod:
specifier: ^4.3.6
version: 4.3.6
devDependencies:
'@eslint/js':
specifier: ^9.39.1
@@ -35,19 +44,19 @@ importers:
version: 19.2.3(@types/react@19.2.14)
'@vitejs/plugin-react':
specifier: ^5.1.1
version: 5.1.4(vite@7.3.1(@types/node@24.10.13))
version: 5.1.4(vite@7.3.1(@types/node@24.10.13)(jiti@2.6.1)(lightningcss@1.31.1))
babel-plugin-react-compiler:
specifier: ^1.0.0
version: 1.0.0
eslint:
specifier: ^9.39.1
version: 9.39.3
version: 9.39.3(jiti@2.6.1)
eslint-plugin-react-hooks:
specifier: ^7.0.1
version: 7.0.1(eslint@9.39.3)
version: 7.0.1(eslint@9.39.3(jiti@2.6.1))
eslint-plugin-react-refresh:
specifier: ^0.4.24
version: 0.4.26(eslint@9.39.3)
version: 0.4.26(eslint@9.39.3(jiti@2.6.1))
globals:
specifier: ^16.5.0
version: 16.5.0
@@ -56,10 +65,10 @@ importers:
version: 5.9.3
typescript-eslint:
specifier: ^8.48.0
version: 8.56.1(eslint@9.39.3)(typescript@5.9.3)
version: 8.56.1(eslint@9.39.3(jiti@2.6.1))(typescript@5.9.3)
vite:
specifier: ^7.3.1
version: 7.3.1(@types/node@24.10.13)
version: 7.3.1(@types/node@24.10.13)(jiti@2.6.1)(lightningcss@1.31.1)
packages:
@@ -500,6 +509,96 @@ packages:
cpu: [x64]
os: [win32]
'@tailwindcss/node@4.2.1':
resolution: {integrity: sha512-jlx6sLk4EOwO6hHe1oCGm1Q4AN/s0rSrTTPBGPM0/RQ6Uylwq17FuU8IeJJKEjtc6K6O07zsvP+gDO6MMWo7pg==}
'@tailwindcss/oxide-android-arm64@4.2.1':
resolution: {integrity: sha512-eZ7G1Zm5EC8OOKaesIKuw77jw++QJ2lL9N+dDpdQiAB/c/B2wDh0QPFHbkBVrXnwNugvrbJFk1gK2SsVjwWReg==}
engines: {node: '>= 20'}
cpu: [arm64]
os: [android]
'@tailwindcss/oxide-darwin-arm64@4.2.1':
resolution: {integrity: sha512-q/LHkOstoJ7pI1J0q6djesLzRvQSIfEto148ppAd+BVQK0JYjQIFSK3JgYZJa+Yzi0DDa52ZsQx2rqytBnf8Hw==}
engines: {node: '>= 20'}
cpu: [arm64]
os: [darwin]
'@tailwindcss/oxide-darwin-x64@4.2.1':
resolution: {integrity: sha512-/f/ozlaXGY6QLbpvd/kFTro2l18f7dHKpB+ieXz+Cijl4Mt9AI2rTrpq7V+t04nK+j9XBQHnSMdeQRhbGyt6fw==}
engines: {node: '>= 20'}
cpu: [x64]
os: [darwin]
'@tailwindcss/oxide-freebsd-x64@4.2.1':
resolution: {integrity: sha512-5e/AkgYJT/cpbkys/OU2Ei2jdETCLlifwm7ogMC7/hksI2fC3iiq6OcXwjibcIjPung0kRtR3TxEITkqgn0TcA==}
engines: {node: '>= 20'}
cpu: [x64]
os: [freebsd]
'@tailwindcss/oxide-linux-arm-gnueabihf@4.2.1':
resolution: {integrity: sha512-Uny1EcVTTmerCKt/1ZuKTkb0x8ZaiuYucg2/kImO5A5Y/kBz41/+j0gxUZl+hTF3xkWpDmHX+TaWhOtba2Fyuw==}
engines: {node: '>= 20'}
cpu: [arm]
os: [linux]
'@tailwindcss/oxide-linux-arm64-gnu@4.2.1':
resolution: {integrity: sha512-CTrwomI+c7n6aSSQlsPL0roRiNMDQ/YzMD9EjcR+H4f0I1SQ8QqIuPnsVp7QgMkC1Qi8rtkekLkOFjo7OlEFRQ==}
engines: {node: '>= 20'}
cpu: [arm64]
os: [linux]
'@tailwindcss/oxide-linux-arm64-musl@4.2.1':
resolution: {integrity: sha512-WZA0CHRL/SP1TRbA5mp9htsppSEkWuQ4KsSUumYQnyl8ZdT39ntwqmz4IUHGN6p4XdSlYfJwM4rRzZLShHsGAQ==}
engines: {node: '>= 20'}
cpu: [arm64]
os: [linux]
'@tailwindcss/oxide-linux-x64-gnu@4.2.1':
resolution: {integrity: sha512-qMFzxI2YlBOLW5PhblzuSWlWfwLHaneBE0xHzLrBgNtqN6mWfs+qYbhryGSXQjFYB1Dzf5w+LN5qbUTPhW7Y5g==}
engines: {node: '>= 20'}
cpu: [x64]
os: [linux]
'@tailwindcss/oxide-linux-x64-musl@4.2.1':
resolution: {integrity: sha512-5r1X2FKnCMUPlXTWRYpHdPYUY6a1Ar/t7P24OuiEdEOmms5lyqjDRvVY1yy9Rmioh+AunQ0rWiOTPE8F9A3v5g==}
engines: {node: '>= 20'}
cpu: [x64]
os: [linux]
'@tailwindcss/oxide-wasm32-wasi@4.2.1':
resolution: {integrity: sha512-MGFB5cVPvshR85MTJkEvqDUnuNoysrsRxd6vnk1Lf2tbiqNlXpHYZqkqOQalydienEWOHHFyyuTSYRsLfxFJ2Q==}
engines: {node: '>=14.0.0'}
cpu: [wasm32]
bundledDependencies:
- '@napi-rs/wasm-runtime'
- '@emnapi/core'
- '@emnapi/runtime'
- '@tybys/wasm-util'
- '@emnapi/wasi-threads'
- tslib
'@tailwindcss/oxide-win32-arm64-msvc@4.2.1':
resolution: {integrity: sha512-YlUEHRHBGnCMh4Nj4GnqQyBtsshUPdiNroZj8VPkvTZSoHsilRCwXcVKnG9kyi0ZFAS/3u+qKHBdDc81SADTRA==}
engines: {node: '>= 20'}
cpu: [arm64]
os: [win32]
'@tailwindcss/oxide-win32-x64-msvc@4.2.1':
resolution: {integrity: sha512-rbO34G5sMWWyrN/idLeVxAZgAKWrn5LiR3/I90Q9MkA67s6T1oB0xtTe+0heoBvHSpbU9Mk7i6uwJnpo4u21XQ==}
engines: {node: '>= 20'}
cpu: [x64]
os: [win32]
'@tailwindcss/oxide@4.2.1':
resolution: {integrity: sha512-yv9jeEFWnjKCI6/T3Oq50yQEOqmpmpfzG1hcZsAOaXFQPfzWprWrlHSdGPEF3WQTi8zu8ohC9Mh9J470nT5pUw==}
engines: {node: '>= 20'}
'@tailwindcss/vite@4.2.1':
resolution: {integrity: sha512-TBf2sJjYeb28jD2U/OhwdW0bbOsxkWPwQ7SrqGf9sVcoYwZj7rkXljroBO9wKBut9XnmQLXanuDUeqQK0lGg/w==}
peerDependencies:
vite: ^5.2.0 || ^6 || ^7
'@types/babel__core@7.20.5':
resolution: {integrity: sha512-qoQprZvz5wQFJwMDqeseRXWv3rqMvhgpbXFfVyWhbx9X47POIA6i/+dXefEmZKoAgOaTdaIgNSMqMIU61yRyzA==}
@@ -687,9 +786,17 @@ packages:
deep-is@0.1.4:
resolution: {integrity: sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ==}
detect-libc@2.1.2:
resolution: {integrity: sha512-Btj2BOOO83o3WyH59e8MgXsxEQVcarkUOpEYrubB0urwnN10yQ364rsiByU11nZlqWYZm05i/of7io4mzihBtQ==}
engines: {node: '>=8'}
electron-to-chromium@1.5.302:
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'@typescript-eslint/parser': 8.56.1(eslint@9.39.3)(typescript@5.9.3)
'@typescript-eslint/eslint-plugin': 8.56.1(@typescript-eslint/parser@8.56.1(eslint@9.39.3(jiti@2.6.1))(typescript@5.9.3))(eslint@9.39.3(jiti@2.6.1))(typescript@5.9.3)
'@typescript-eslint/parser': 8.56.1(eslint@9.39.3(jiti@2.6.1))(typescript@5.9.3)
'@typescript-eslint/typescript-estree': 8.56.1(typescript@5.9.3)
'@typescript-eslint/utils': 8.56.1(eslint@9.39.3)(typescript@5.9.3)
eslint: 9.39.3
'@typescript-eslint/utils': 8.56.1(eslint@9.39.3(jiti@2.6.1))(typescript@5.9.3)
eslint: 9.39.3(jiti@2.6.1)
typescript: 5.9.3
transitivePeerDependencies:
- supports-color
@@ -2060,7 +2392,7 @@ snapshots:
dependencies:
punycode: 2.3.1
vite@7.3.1(@types/node@24.10.13):
vite@7.3.1(@types/node@24.10.13)(jiti@2.6.1)(lightningcss@1.31.1):
dependencies:
esbuild: 0.27.3
fdir: 6.5.0(picomatch@4.0.3)
@@ -2071,6 +2403,8 @@ snapshots:
optionalDependencies:
'@types/node': 24.10.13
fsevents: 2.3.3
jiti: 2.6.1
lightningcss: 1.31.1
which@2.0.2:
dependencies:

40
client/src/App.css
View File

@@ -1,40 +0,0 @@
#root {
margin: 0;
padding: 0;
}
.logo {
height: 6em;
padding: 1.5em;
will-change: filter;
transition: filter 300ms;
}
.logo:hover {
filter: drop-shadow(0 0 2em #646cffaa);
}
.logo.react:hover {
filter: drop-shadow(0 0 2em #61dafbaa);
}
@keyframes logo-spin {
from {
transform: rotate(0deg);
}
to {
transform: rotate(360deg);
}
}
@media (prefers-reduced-motion: no-preference) {
a:nth-of-type(2) .logo {
animation: logo-spin infinite 20s linear;
}
}
.card {
padding: 2em;
}
.read-the-docs {
color: #888;
}

33
client/src/App.tsx
View File

@@ -1,41 +1,26 @@
import { useState } from "react";
import "./App.css";
import { type FC } from "react";
import { UserInput } from "./game/UserInput";
import { BoardDisplay } from "./game/BoardDisplay";
import { ConnectionStatus } from "./game/ConnectionStatus";
import { NameInput } from "./game/NameInput";
import { SessionOverride } from "./game/SessionOverride";
import { useGameChannelContext } from "./contexts/useGameChannelContext";
const getPlayerNameFromUrl = () => {
const params = new URLSearchParams(window.location.search);
return params.get("name") || null;
};
const App: FC<{ playerName: string }> = ({ playerName }) => {
const { isOverridden } = useGameChannelContext();
function App() {
const [playerName, setPlayerName] = useState<string | null>(
getPlayerNameFromUrl,
);
if (!playerName) {
return <NameInput onNameSubmit={setPlayerName} />;
if (isOverridden) {
return <SessionOverride />;
}
return (
<>
<UserInput playerName={playerName} />
<div
style={{
width: "100vw",
height: "100vh",
background: "#1a1a2e",
overflow: "hidden",
position: "relative",
}}
>
<div className="w-screen h-screen bg-navy-900">
<ConnectionStatus />
<BoardDisplay playerName={playerName} />
</div>
</>
);
}
};
export default App;

27
client/src/contexts/GameChannelContext.tsx
View File

@@ -6,6 +6,7 @@ interface GameChannelContextValue {
channel: Channel | null;
channelStatus: string;
isJoined: boolean;
isOverridden: boolean;
joinGame: (name: string) => void;
}
@@ -13,29 +14,32 @@ const GameChannelContext = createContext<GameChannelContextValue | undefined>(
undefined,
);
interface GameChannelProviderProps {
channelName: string;
params?: Record<string, unknown>;
children: ReactNode;
}
export function GameChannelProvider({
channelName,
params = {},
userName,
children,
}: GameChannelProviderProps) {
}: {
userName: string;
children: ReactNode;
}) {
const { socket, isConnected } = useWebSocketContext();
const [channelStatus, setChannelStatus] = useState<string>("waiting");
const [isJoined, setIsJoined] = useState(false);
const [isOverridden, setIsOverridden] = useState(false);
const [channel, setChannel] = useState<Channel | null>(null);
const channelName = "user:" + userName;
useEffect(() => {
if (!socket || !isConnected) {
return;
}
console.log(`Joining channel: ${channelName}`);
const newChannel = socket.channel(channelName, params);
const newChannel = socket.channel(channelName, { });
newChannel.on("new_browser_connection", () => {
console.warn("⚠️ Session overridden by new browser connection");
setIsOverridden(true);
});
newChannel
.join()
@@ -62,7 +66,7 @@ export function GameChannelProvider({
setIsJoined(false);
setChannelStatus("waiting");
};
}, [socket, isConnected, channelName, params]);
}, [socket, isConnected, channelName]);
const joinGame = (name: string) => {
if (!channel) return;
@@ -87,6 +91,7 @@ export function GameChannelProvider({
channel,
channelStatus,
isJoined,
isOverridden,
joinGame,
}}
>

17
client/src/contexts/WebSocketContext.tsx
View File

@@ -6,26 +6,29 @@ interface WebSocketContextValue {
connectionStatus: string;
isConnected: boolean;
}
const WebSocketContext = createContext<WebSocketContextValue | undefined>(
undefined,
);
interface WebSocketProviderProps {
export function WebSocketProvider({
url,
userName,
children,
}: {
url: string;
userName: string;
children: ReactNode;
}
export function WebSocketProvider({ url, children }: WebSocketProviderProps) {
}) {
const [connectionStatus, setConnectionStatus] =
useState<string>("connecting");
const [isConnected, setIsConnected] = useState(false);
const [socket, setSocket] = useState<Socket | null>(null);
useEffect(() => {
console.log(`Connecting to ${url}`);
console.log(`Connecting to ${url} as ${userName}`);
const newSocket = new Socket(url, {
params: { user_name: userName },
timeout: 100,
reconnectAfterMs: (tries) =>
[
@@ -60,7 +63,7 @@ export function WebSocketProvider({ url, children }: WebSocketProviderProps) {
newSocket.disconnect();
setSocket(null);
};
}, [url]);
}, [url, userName]);
return (
<WebSocketContext.Provider

87
client/src/game/BoardDisplay.tsx
View File

@@ -1,24 +1,23 @@
import { useEffect, useState } from "react";
import { useGameChannelContext } from "../contexts/useGameChannelContext";
import { z } from "zod";
import { BoardPlayer } from "./BoardPlayer";
interface Player {
x: number;
y: number;
}
const PlayerSchema = z.object({
x: z.number(),
y: z.number(),
});
interface GameState {
[playerName: string]: Player;
}
const GameStateSchema = z.record(z.string(), PlayerSchema);
export const BoardDisplay = ({ playerName }: {
playerName: string;
}) => {
type GameState = z.infer<typeof GameStateSchema>;
export const BoardDisplay = ({ playerName }: { playerName: string }) => {
const { channel, isJoined, joinGame } = useGameChannelContext();
const [players, setPlayers] = useState<GameState>({});
useEffect(() => {
if (channel && !isJoined) {
// Send join_game message with player name
joinGame(playerName);
}
}, [channel, isJoined, playerName, joinGame]);
@@ -26,62 +25,34 @@ export const BoardDisplay = ({ playerName }: {
useEffect(() => {
if (!channel) return;
// Listen for game state updates
const ref = channel.on("game_state", (payload: { players: GameState }) => {
setPlayers(payload.players);
});
const ref = channel.on(
"game_state",
(payload: { game_state: unknown }) => {
const result = GameStateSchema.safeParse(payload.game_state);
if (result.success) {
setPlayers(result.data);
} else {
console.error("Invalid game state received:", result.error);
setPlayers({});
}
},
);
// Cleanup listener on unmount
return () => {
channel.off("game_state", ref);
};
}, [channel]);
return (
<div
style={{
position: "relative",
width: "800px",
height: "600px",
background: "#16213e",
margin: "50px auto",
border: "2px solid #0f3460",
overflow: "hidden",
}}
>
<div className="relative w-200 h-150 bg-navy-800 my-12.5 mx-auto border-2 border-navy-700 overflow-hidden">
{Object.entries(players).map(([name, player]) => (
<div
<BoardPlayer
key={name}
style={{
position: "absolute",
left: player.x,
top: player.y,
width: "20px",
height: "20px",
borderRadius: "50%",
background: name === playerName ? "#e94560" : "#53a8b6",
border:
name === playerName ? "3px solid #ff6b6b" : "2px solid #48d6e0",
transition: "all 0.1s linear",
transform: "translate(-50%, -50%)",
boxShadow:
name === playerName ? "0 0 10px #e94560" : "0 0 5px #53a8b6",
}}
>
<div
style={{
position: "absolute",
top: "-25px",
left: "50%",
transform: "translateX(-50%)",
color: "#fff",
fontSize: "10px",
whiteSpace: "nowrap",
}}
>
{name}
</div>
</div>
name={name}
x={player.x}
y={player.y}
isCurrentPlayer={name === playerName}
/>
))}
</div>
);

28
client/src/game/BoardPlayer.tsx Normal file
View File

@@ -0,0 +1,28 @@
import { type FC } from "react";
export const BoardPlayer: FC<{
name: string;
x: number;
y: number;
isCurrentPlayer: boolean;
}> = ({ name, x, y, isCurrentPlayer }) => {
return (
<div
style={{
left: x,
top: y,
}}
className={`
transition-all duration-50
absolute w-5 h-5 rounded-full linear -translate-x-1/2 -translate-y-1/2 ${
isCurrentPlayer
? "bg-accent-600 border-[3px] border-accent-400 shadow-[0_0_10px_var(--color-accent-600)]"
: "bg-navy-400 border-2 border-navy-300 shadow-[0_0_5px_var(--color-navy-400)]"
}`}
>
<div className="absolute -top-6.25 left-1/2 -translate-x-1/2 text-navy-50 text-[10px] whitespace-nowrap">
{name}
</div>
</div>
);
};

14
client/src/game/ConnectionStatus.tsx
View File

@@ -6,19 +6,7 @@ export const ConnectionStatus = () => {
const { channelStatus } = useGameChannelContext();
return (
<div
style={{
position: "absolute",
top: 10,
right: 10,
color: "white",
fontFamily: "monospace",
background: "rgba(0,0,0,0.5)",
padding: "10px",
borderRadius: "5px",
fontSize: "12px",
}}
>
<div className="text-navy-50 font-mono bg-navy-900/80 p-2.5 rounded-[5px] text-xs">
<div>WebSocket: {connectionStatus}</div>
<div>Channel: {channelStatus}</div>
</div>

62
client/src/game/NameInput.tsx
View File

@@ -29,35 +29,9 @@ export const NameInput = ({ onNameSubmit }: NameInputProps) => {
};
return (
<div
style={{
width: "100vw",
height: "100vh",
background: "#1a1a2e",
display: "flex",
alignItems: "center",
justifyContent: "center",
}}
>
<div
style={{
background: "#16213e",
padding: "40px",
borderRadius: "10px",
border: "2px solid #0f3460",
maxWidth: "400px",
width: "100%",
}}
>
<h1
style={{
color: "#e94560",
fontFamily: "monospace",
fontSize: "24px",
marginBottom: "20px",
textAlign: "center",
}}
>
<div className="w-screen h-screen bg-navy-900 flex items-center justify-center">
<div className="bg-navy-800 p-10 rounded-[10px] border-2 border-navy-700 max-w-100 w-full">
<h1 className="text-accent-500 font-mono text-2xl mb-5 text-center">
Enter Your Name
</h1>
<form onSubmit={handleSubmit}>
@@ -67,34 +41,16 @@ export const NameInput = ({ onNameSubmit }: NameInputProps) => {
onChange={(e) => setName(e.target.value)}
placeholder="Your name..."
autoFocus
style={{
width: "100%",
padding: "12px",
fontSize: "16px",
background: "#0f3460",
border: "2px solid #53a8b6",
borderRadius: "5px",
color: "white",
fontFamily: "monospace",
marginBottom: "20px",
boxSizing: "border-box",
}}
className="w-full p-3 text-base bg-navy-700 border-2 border-navy-500 rounded-[5px] text-navy-50 font-mono mb-5 box-border placeholder:text-navy-400"
/>
<button
type="submit"
disabled={!name.trim()}
style={{
width: "100%",
padding: "12px",
fontSize: "16px",
background: name.trim() ? "#e94560" : "#666",
border: "none",
borderRadius: "5px",
color: "white",
fontFamily: "monospace",
cursor: name.trim() ? "pointer" : "not-allowed",
fontWeight: "bold",
}}
className={`w-full p-3 text-base border-none rounded-[5px] text-navy-50 font-mono font-bold ${
name.trim()
? "bg-accent-600 hover:bg-accent-500 cursor-pointer"
: "bg-navy-600 cursor-not-allowed"
}`}
>
Join Game
</button>

24
client/src/game/SessionOverride.tsx Normal file
View File

@@ -0,0 +1,24 @@
import type { FC } from "react";
export const SessionOverride: FC = () => {
return (
<div className="fixed inset-0 bg-navy-900/95 flex items-center justify-center z-50">
<div className="bg-navy-800 border-2 border-accent-600 rounded-lg p-8 max-w-md text-center">
<div className="text-6xl mb-4">⚠️</div>
<h2 className="text-2xl font-bold text-accent-500 mb-4">
Session Overridden
</h2>
<p className="text-navy-200 mb-6">
This session has been replaced by a new browser connection. Your
inputs are no longer active.
</p>
<button
onClick={() => window.location.reload()}
className="bg-accent-600 hover:bg-accent-500 text-navy-900 font-bold py-2 px-6 rounded transition-colors"
>
Reload Page
</button>
</div>
</div>
);
};

19
client/src/game/UserInput.tsx
View File

@@ -12,34 +12,37 @@ export const UserInput = ({ playerName }: { playerName: string }) => {
const key = e.key.toLowerCase();
if (["w", "a", "s", "d"].includes(key)) {
e.preventDefault();
if (!keysPressed.current.has(key) && channel.state === "joined") {
keysPressed.current.add(key);
channel.push("key_down", { key, name: playerName });
}
}
};
const handleKeyUp = (e: KeyboardEvent) => {
const key = e.key.toLowerCase();
if (["w", "a", "s", "d"].includes(key)) {
if (keysPressed.current.has(key) && channel.state === "joined") {
keysPressed.current.delete(key);
channel.push("key_up", { key, name: playerName });
}
}
};
const handleBlur = () => {
if (channel.state === "joined") {
keysPressed.current.forEach((key) => {
channel.push("key_up", { key, name: playerName });
});
}
keysPressed.current.clear();
};
const interval = setInterval(() => {
if (keysPressed.current.size > 0 && channel.state === "joined") {
const directions = Array.from(keysPressed.current);
channel.push("move", { directions, name: playerName });
}
}, 100);
window.addEventListener("keydown", handleKeyDown);
window.addEventListener("keyup", handleKeyUp);
window.addEventListener("blur", handleBlur);
return () => {
clearInterval(interval);
window.removeEventListener("keydown", handleKeyDown);
window.removeEventListener("keyup", handleKeyUp);
window.removeEventListener("blur", handleBlur);

128
client/src/index.css
View File

@@ -1,66 +1,92 @@
:root {
font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
line-height: 1.5;
font-weight: 400;
@import "tailwindcss";
color-scheme: light dark;
color: rgba(255, 255, 255, 0.87);
background-color: #242424;
/* :root {
--color-navy-50: hsl(222 30% 94%);
--color-navy-100: hsl(222 32% 88%);
--color-navy-200: hsl(222 35% 77%);
--color-navy-300: hsl(222 38% 66%);
--color-navy-400: hsl(222 40% 55%);
--color-navy-500: hsl(222 45% 43%);
--color-navy-600: hsl(222 50% 34%);
--color-navy-700: hsl(222 55% 26%);
--color-navy-800: hsl(222 58% 17%);
--color-navy-900: hsl(222 60% 9%);
--color-navy-950: hsl(222 55% 5%);
font-synthesis: none;
text-rendering: optimizeLegibility;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
--color-accent-50: hsl(13 35% 94%);
--color-accent-100: hsl(13 38% 88%);
--color-accent-200: hsl(13 40% 77%);
--color-accent-300: hsl(13 42% 66%);
--color-accent-400: hsl(13 45% 55%);
--color-accent-500: hsl(13 48% 50%);
--color-accent-600: hsl(13 50% 42%);
--color-accent-700: hsl(13 52% 34%);
--color-accent-800: hsl(13 55% 23%);
--color-accent-900: hsl(13 58% 12%);
--color-accent-950: hsl(13, 60%, 6%);
} */
@theme {
--color-navy-50: hsl(222 30% 94%);
--color-navy-100: hsl(222 32% 88%);
--color-navy-200: hsl(222 35% 77%);
--color-navy-300: hsl(222 38% 66%);
--color-navy-400: hsl(222 40% 55%);
--color-navy-500: hsl(222 45% 43%);
--color-navy-600: hsl(222 50% 34%);
--color-navy-700: hsl(222 55% 26%);
--color-navy-800: hsl(222 58% 17%);
--color-navy-900: hsl(222 60% 9%);
--color-navy-950: hsl(222 55% 5%);
a {
font-weight: 500;
color: #646cff;
text-decoration: inherit;
}
a:hover {
color: #535bf2;
--color-accent-50: hsl(7 35% 94%);
--color-accent-100: hsl(7 38% 88%);
--color-accent-200: hsl(7 40% 77%);
--color-accent-300: hsl(7 42% 66%);
--color-accent-400: hsl(7 45% 55%);
--color-accent-500: hsl(7 48% 50%);
--color-accent-600: hsl(7 50% 42%);
--color-accent-700: hsl(7 52% 34%);
--color-accent-800: hsl(7 55% 23%);
--color-accent-900: hsl(7 58% 12%);
--color-accent-950: hsl(7 60% 6%);
}
body {
margin: 0;
min-width: 320px;
min-height: 100vh;
@apply m-0 min-w-[320px] min-h-screen font-sans antialiased;
}
h1 {
font-size: 3.2em;
line-height: 1.1;
@apply text-5xl font-bold leading-tight;
}
h2 {
@apply text-4xl font-bold leading-tight;
}
h3 {
@apply text-3xl font-semibold leading-snug;
}
h4 {
@apply text-2xl font-semibold leading-snug;
}
h5 {
@apply text-xl font-semibold leading-normal;
}
h6 {
@apply text-lg font-semibold leading-normal;
}
a {
@apply font-medium no-underline transition-colors;
}
button {
border-radius: 8px;
border: 1px solid transparent;
padding: 0.6em 1.2em;
font-size: 1em;
font-weight: 500;
font-family: inherit;
background-color: #1a1a1a;
cursor: pointer;
transition: border-color 0.25s;
}
button:hover {
border-color: #646cff;
}
button:focus,
button:focus-visible {
outline: 4px auto -webkit-focus-ring-color;
@apply rounded-lg border border-transparent px-5 py-2.5 text-base font-medium cursor-pointer transition-colors;
}
@media (prefers-color-scheme: light) {
:root {
color: #213547;
background-color: #ffffff;
}
a:hover {
color: #747bff;
}
button {
background-color: #f9f9f9;
}
button:disabled {
@apply opacity-50 cursor-not-allowed;
}

34
client/src/main.tsx
View File

@@ -1,18 +1,38 @@
import { StrictMode } from "react";
import { StrictMode, useState, type FC } from "react";
import { createRoot } from "react-dom/client";
import "./index.css";
import App from "./App.tsx";
import { GameChannelProvider } from "./contexts/GameChannelContext";
import { WebSocketProvider } from "./contexts/WebSocketContext.tsx";
import { GameChannelProvider } from "./contexts/GameChannelContext.tsx";
import { NameInput } from "./game/NameInput.tsx";
const WS_SERVER = "ws://localhost:4000/socket";
createRoot(document.getElementById("root")!).render(
<StrictMode>
<WebSocketProvider url={WS_SERVER}>
<GameChannelProvider channelName="game:lobby">
<App />
const getPlayerNameFromUrl = () => {
const params = new URLSearchParams(window.location.search);
return params.get("name") || null;
};
export const ProvidersWithName: FC = () => {
const [playerName, setPlayerName] = useState<string | null>(
getPlayerNameFromUrl,
);
if (!playerName) {
return <NameInput onNameSubmit={setPlayerName} />;
}
return (
<WebSocketProvider url={WS_SERVER} userName={playerName}>
<GameChannelProvider userName={playerName}>
<App playerName={playerName} />
</GameChannelProvider>
</WebSocketProvider>
);
};
createRoot(document.getElementById("root")!).render(
<StrictMode>
<ProvidersWithName />
</StrictMode>,
);

10
client/vite.config.ts
View File

@@ -1,13 +1,15 @@
import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import { defineConfig } from "vite";
import react from "@vitejs/plugin-react";
import tailwindcss from "@tailwindcss/vite";
// https://vite.dev/config/
export default defineConfig({
plugins: [
tailwindcss(),
react({
babel: {
plugins: [['babel-plugin-react-compiler']],
plugins: [["babel-plugin-react-compiler"]],
},
}),
],
})
});