Intro

You can read the intro to this post here:
👉 Vibe Coding Fifty! – Intro

Vibe Coding Plan

• Do Home Screen with OTP field
• Navigate from Home to Room Screen, passing entered OTP
• Create global User Profile
• Create Room State with Players/Bots + Game Settings
• Navigate to Game Screen, passing Player/Bots + Game Settings
• Implement Gameplay client side based on rule docs, for initial offline mode
• Create basic UI to display game state

Initial Prompt

Please create a custom OTP component inside of @components 
it should be customizable to specify:
- code length
- support alphabetical letters (uppercase)
- callbacks on each field entry (props: lastField, allFields)
- callbacks on all fields filled (props: allFields)

Prompt

Please adjust @fifty_app.dart to remove the sample code.
Create a new component called "room_code_widget.dart"
which includes:
- OTP (4 fields, alphabetical)
- Row with 2 buttons
-- Host (disabled for now)
-- Join

add empty sample callbacks on each button press
```

Vibe Coding Plan

• Do Home Screen with OTP field
• Navigate from Home to Room Screen, passing entered OTP

Prompt

Awesome. Next when pressing "Join" we need to navigate to a "RoomScreen" (inside lib/screens).
We need to implement a state of the art routing/navigation first & then implement the RoomScreen
(for now it only shows the input code that was used to join the room)

Prompt Result

• Added the dependency to the pubspec.yaml (dependency file)
• Created the RoomScreen component with a prototype skeleton layout
• Properly creating an AppRouter class to handle the routing, including Not Found-Fallbacks
• Implemented this new routing system into the main.dart to work with the app
• Implemented the routing navigation into the HomeScreen, while (unprompted) correctly passing the OTP-Code as a variable (understanding of intention)
• Ran the command to install the new dependency

• Do Home Screen with OTP field
• Navigate from Home to Room Screen, passing entered OTP
• Create global User Profile

Prompt

Great, works!
Next we need to support a basic global user profile.
Use a state of the art way to have a user profile that stores things like username, elo, email etc. and is easily accessible in all components in a global way.

Add a profile_picture component to the @fifty_app.dart , that when pressed opens a bottom sheet, showing the profile data.

Prompt Result

• Added 2 correct new dependencies for state & dependency management
• Created the User model, proactively adding properties like gamesPlayed, gamesWon
• Implemented User state management via a UserCubit
• Implemented the global dependency injection setup
• Created the profile picture component
• Ran the command to install new dependencies

• Do Home Screen with OTP field
• Navigate from Home to Room Screen, passing entered OTP
• Create global User Profile
• Create Room State with Players/Bots + Game Settings

Prompt

Please write a quick doc inside of @user_profile.md 
on how the profile/cubit/locator works & is used.

You can use snippets of code to show usage, 
but don't copy the source code to "explain" how it works, 
actually explain in state of the art doc

For Models properties as well as method arguments etc. 
please showcase all properties/arguments in a table 
with an explanation/default value

Compresses Chat Retention in Cursor

One cool feature of Cursor: When you start a new chat from this little info-prompt, it will reference a summary of the previous conversation, so your new chat will still retain some information.

Here's what Cursor compressed from everything up until here:

The user requested the creation of a customizable OTP component with specific features, 
which the assistant successfully implemented, including a demonstration in the FiftyApp.

The user then asked for a routing/navigation system to be set up, along with a RoomScreen 
that displays the input code used to join a room, which the assistant accomplished using GoRouter.

Following that, the user requested a global user profile system, prompting the assistant 
to implement a BLoC pattern for state management and a service locator for dependency injection.

The assistant created a User model, UserCubit for state management, and a ProfilePictureComponent
that opens a bottom sheet with user data when tapped, integrating it into the FiftyApp.

Most recently, the user asked for comprehensive documentation on the user profile system, 
including tables for properties and method arguments, which the assistant provided, 
enhancing the documentation with a professional format and clear explanations

• Create Room State with Players/Bots + Game Settings

Prompt

Next let's tackle the @RoomScreen :

- move room code up to the header
- iniate room cubit that holds room state

## room state
- list of players
- list of bots
- GameState (class props defined l8r)
- GameSettings (class props defined l8r)
- RoomSettings
-- maxPlayers
-- code
-- privacyLevel (enum = open, private, social)

AI Model Reasoning

Looking at the user's request, I need to:
[...]
Let me start by exploring the current codebase structure to understand 
how to best implement this, particularly looking at the existing cubit structure and models.

Prompt Result

• Implemented all Room related models
• Implemented RoomCubit with RoomState
• Implemented RoomCubit Factory into the dependency handling, for multiple instance support (understanding of intention)
• Implemented RoomCubit into RoomScreen, while also making sure to include the small UI change that was requested
• Ran flutter analyze to see the linter output
• Iterated on & fixed linter errors

Prompt

Please move all the modals into their own components :)

File edits without success

Now I need to remove the _getPrivacyIcon method since it's now in the RoomSettingsModal component:
-
I need to remove the _getPrivacyIcon method from the RoomScreen:
-
I need to find where _getPrivacyIcon is being used and replace it:
-
Let me replace the _getPrivacyIcon call with a direct implementation:

• Do Home Screen with OTP field
• Navigate from Home to Room Screen, passing entered OTP
• Create global User Profile
• Create Room State with Players/Bots + Game Settings
• Navigate to Game Screen, passing Player/Bots + Game Settings
• Implement Gameplay client side based on rule docs, for initial offline mode
• Create basic UI to display game state

Cursor Compressed History

Again creating a new chat, with a compressed history:

The user initially requested the creation of a customizable OTP component,
which the assistant successfully implemented, demonstrating it in the FiftyApp.

The conversation evolved to include setting up a routing/navigation system and 
a RoomScreen that displays the input code used to join a room, 
which the assistant accomplished using GoRouter.

The user then asked for a global user profile system, prompting the assistant 
to implement a BLoC pattern for state management and a service locator for 
dependency injection, including a User model and UserCubit.

Most recently, the user requested a modern UI for selecting difficulty levels for bots, 
leading to the assistant replacing the segmented control with a card-based selection interface, 
enhancing usability and aesthetics.

The user finally asked to add a list of random bot names and a dice icon 
to select a random name, which the assistant implemented, ensuring a fun 
and user-friendly experience for bot creation.

 
I usually quickly glance into this summary by hovering it in the context files of the new chat, to better understand what I can reference in our conversation & what needs to be reloaded int ocontext.

Prompt

Next we want to create a new @screens "GameScreen", when starting a game we transition 
from the @room_screen.dart to the new GameScreen while passing 
the full participants list, game settings & room code to the RoomScreen.

Prompt Result

• Implemented GameScreen
• Implemented GameScreen route into AppRouter
• Updated RoomScreen to implement navigation to new screen while passing the prompted data

Prompt

When trying to exit the gamescreen in any way it gets this:

════════ Exception caught by gesture library ═══════════════════════════════════
The following GoError was thrown while routing a pointer event:
There is nothing to pop

• Navigate to Game Screen, passing Player/Bots + Game Settings
• Implement Gameplay client side based on rule docs, for initial offline mode
• Create basic UI to display game state

Prompt

Great, I've updated @game_settings.dart to include some new properties.

We now start with implementing the GameCubit/BloC that will handle the gameplay 
following the @fifty-game-rules.md 

It will receive the participant list + game settings & then run the game with those settings.

For a rough understanding of how the gameplay loop could look like 
in a simple version: @fifty-js-console-gamecode.md 

Bots will pick a random time delay during a round before rolling their throw.

If all human players have rolled, all bots will instantly roll after each other, 
not making human players wait.

Keep track of each players available / thrown dice individually. 
Thrown dice should be stored in a way, that we know in which round 
which combination was thrown with which result.

After a dice (or combination of dice) have been thrown by a player 
they are moved from the available to the thrown data.

Types of dice can be available with multiple amounts, 
so keep an amount system for this in mind when implementing.

Implement simple Game UI components to display all the game state in simple, compact, modern UI

Prompt Result

✅ What I've Implemented:

🎲 Core Game Models:

• DiceType - Represents different dice (d4, d6, d8, d10, d12, d20) with quantities
• DiceRoll - Handles open-ended rolling (re-roll on max value)
• DiceThrow - Tracks complete throws with multiple dice
• DiceInventory - Manages available vs. used dice per player
• GamePlayer - Extends participants with game-specific state
• GameState - Complete game state with phases, rounds, timers
• PlayerActionResult - Result feedback for player actions

🧠 GameCubit Logic:

• Round Management - 3 rounds that sum to 50 with random limits
• Turn-based System - Proper player rotation and validation
• Bot AI - Risk-factor based dice selection with smart algorithms
• Timer System - Round timers with auto-advance
• Elimination - Players eliminated when exceeding limits
• Tie-breaker - Automatic tie-breaker rounds with restored dice
• Jackpot Detection - Exact 50 on final round wins instantly

🎨 Modern UI Components:

• GameHeader - Shows current phase, round, limit, and timer
• PlayersDisplay - Horizontal scrolling player cards with status
• PlayerCard - Individual player info with scores and state
• DiceInventoryDisplay - Interactive dice selection for human players
• DiceChip - Individual dice with quantity indicators
• GameLog - Real-time activity feed

🤖 Bot Features:

• Variable Risk Factors - Based on difficulty (30% for easy, 85% for expert)
• Smart Timing - Random delays (2-8s) unless all humans have thrown
• Strategic Dice Selection - Uses expected value calculations
• Instant Response - When all humans are done, bots act immediately

⚡ Key Features:

• Open-ended Rolling - Dice re-roll on maximum values (authentic Fifty! rules)
• Real-time Updates - Live game state with BLoC pattern
• Error Handling - Comprehensive validation and feedback
• Game Events - Jackpot celebrations and end-game dialogs
• Memory Management - Proper timer cleanup and cubit disposal

Prompt

There's quite some remaining errors, please check them
Continue fixing each flutter analyze error 1 by 1

• Do Home Screen with OTP field
• Navigate from Home to Room Screen, passing entered OTP
• Create global User Profile
• Create Room State with Players/Bots + Game Settings
• Navigate to Game Screen, passing Player/Bots + Game Settings
• Implement Gameplay client side based on rule docs, for initial offline mode
• Create basic UI to display game state

This is the moment I was satisfied, calling it a success!

Icon Prompt

Initially I described it my vision & asked for a Midjourney prompt.
While Midjourney didn't produce anything good, this is the image prompt it came up with:

app icon design, cute sci-fi theme, glossy and vibrant style, softly glowing gradients, 
high-contrast light reflections, centered 3D polyhedral dice (d100 or stylized d50) 
with the number "50" clearly visible, 
warm glowing red-orange background with soft radial light, rounded square format, 
charming and futuristic aesthetic, depth and smooth plastic-like material, soft shadows, 
subtle rim lighting, Apple-style icon design