PixeLAW Examples

A collection of game and application examples demonstrating PixeLAW's capabilities

What are PixeLAW Examples?

PixeLAW Examples is a curated collection of fully functional games and applications built on the PixeLAW framework. Each example demonstrates different patterns, mechanics, and capabilities of the platform—from simple cooldown systems to complex grid-based puzzles to PvP competition with cryptographic fairness.

These examples serve as:

Learning Resources: Understand how to build PixeLAW apps by studying working code
Templates: Start your own app by forking and modifying an example
Showcases: Demonstrate the composability and power of the PixeLAW ecosystem
Test Bed: Validate core functionality and app interaction patterns

Whether you're building your first PixeLAW app or exploring advanced features like App2App interactions, these examples provide concrete, production-ready implementations you can learn from and build upon.

Architecture

PixeLAW Examples demonstrate how custom apps integrate with the ecosystem:

graph TB
subgraph "Frontend Layer"
Vanilla[Vanilla Frontend<br/>React Client]
end
subgraph "SDK Layer"
SDK[pixelaw.js<br/>TypeScript SDK]
end
subgraph "Blockchain Layer"
Core[PixeLAW Core<br/>Actions & Models]
DefaultApps[Default Apps<br/>Paint, Snake, Player, House]
end
subgraph "Example Apps Layer - 7 Games"
Chest[Chest<br/>Cooldown System]
Hunter[Hunter<br/>Probability Game]
Maze[Maze<br/>Grid Navigation]
Minesweeper[Minesweeper<br/>Puzzle Game]
Pix2048[Pix2048<br/>Grid Game]
RPS[RPS<br/>PvP Competition]
TicTacToe[TicTacToe<br/>AI Opponent]
end
subgraph "Infrastructure"
Katana[Katana RPC]
Torii[Torii Indexer]
end
Vanilla --> SDK
SDK --> Core
DefaultApps -.implements.-> Core
Chest -.implements.-> Core
Hunter -.implements.-> Core
Maze -.implements.-> Core
Minesweeper -.implements.-> Core
Pix2048 -.implements.-> Core
RPS -.implements.-> Core
TicTacToe -.implements.-> Core
Core --> Katana
Katana --> Torii
Torii -.events.-> SDK
style Chest fill:#6aa84f,stroke:#45682f,stroke-width:2px,color:#fff
style Hunter fill:#6aa84f,stroke:#45682f,stroke-width:2px,color:#fff
style Maze fill:#6aa84f,stroke:#45682f,stroke-width:2px,color:#fff
style Minesweeper fill:#6aa84f,stroke:#45682f,stroke-width:2px,color:#fff
style Pix2048 fill:#6aa84f,stroke:#45682f,stroke-width:2px,color:#fff
style RPS fill:#6aa84f,stroke:#45682f,stroke-width:2px,color:#fff
style TicTacToe fill:#6aa84f,stroke:#45682f,stroke-width:2px,color:#fff

Examples demonstrate:

Building custom apps that integrate with PixeLAW Core
Different game mechanics and interaction patterns
App2App interactions through the hook system
Time-based mechanics with the queue system
Spatial management with areas
Testing strategies with pixelaw_test_utils

Available Apps

Name	Type	Description	Key Features
chest	Cooldown System	Treasure chest placement and collection with time-based cooldowns	24-hour cooldown mechanics, timestamp validation
hunter	Probability Game	Cryptographic randomness-based chance game	Poseidon hash randomness, 1/1024 winning odds
maze	Grid Navigation	Navigate through pixel-based mazes with predefined layouts	Predefined layouts, randomization, pathfinding
minesweeper	Classic Puzzle	Traditional minesweeper with complex grid state management	Complex grid state, win/lose conditions, reveal mechanics
pix2048	Grid Game	Fully on-chain 2048 with directional controls	Multi-pixel coordination, merge mechanics, directional input
rps	PvP Competition	Rock-paper-scissors with commit-reveal cryptographic scheme	Commit-reveal pattern, cryptographic fairness, PvP logic
tictactoe	AI Opponent	Classic tic-tac-toe against a machine learning opponent	AI integration, game tree evaluation, win detection

App Patterns & Architecture

Each app demonstrates different PixeLAW development patterns:

🎯 Simple Single-Pixel Interactions

chest, hunter: Direct pixel interaction with minimal state management

#[dojo::contract]
modchest {
fninteract(refself:ContractState, position:Position) {
// Simple state validationletchest=get!(self.world(), position, Chest);
// Time-based logicassert(current_time>chest.cooldown, 'cooldown active');
// Update via core actionscore_actions.update_pixel(...);
}
}

🎲 Complex Grid Games

maze, minesweeper, pix2048: Multi-pixel coordination and game boards

#[dojo::contract]
modminesweeper {
fnreveal(refself:ContractState, position:Position) {
// Load board stateletboard=get!(self.world(), board_id, Board);
// Check for mines, update multiple pixelsletadjacent=get_adjacent_positions(position);
foradj_posinadjacent {
core_actions.update_pixel(adj_pos, ...);
}
}
}

⚔️ Player vs Player Competition

rps: Turn-based competition with cryptographic security

#[dojo::contract]
modrps {
fncommit(refself:ContractState, move_hash:felt252) {
// Commit phase: store hashset!(self.world(), RpsCommit { move_hash });
}
fnreveal(refself:ContractState, move:Move, salt:felt252) {
// Reveal phase: verify hashassert(poseidon_hash(move, salt) ==stored_hash, 'invalid reveal');
determine_winner(move, opponent_move);
}
}

🤖 AI Integration

tictactoe: Machine learning opponent integration

#[dojo::contract]
modtictactoe {
fnmake_move(refself:ContractState, position:Position) {
// Player moveupdate_board(position, Player::Human);
// AI responseletai_move=calculate_best_move(board_state);
update_board(ai_move, Player::AI);
}
}

Version Compatibility

Component	Version	Notes
Dojo Framework	`1.7.1`	ECS framework for blockchain games
PixeLAW Core	`0.7.9`	Core contracts dependency (via git)
Cairo	`2.12.2`	Smart contract language
Scarb	`2.12.2`	Package manager and build tool
Starknet	`2.12.2`	Layer 2 blockchain

⚠️ Breaking Changes in Dojo 1.7.1: See DOJO_1.7.1_UPGRADE_GUIDE.md for migration details

Quick Start

Prerequisites

Rust and Cairo language server - Setup Guide
Dojo 1.7.1 - Installation
Scarb 2.12.2 - Download
Docker and Docker Compose - Install Docker
Make - GNU Make

Deploy All Apps (Recommended)

Start PixeLAW with all example apps in one command:

cd examples
# Deploy everything (core + all apps)
make start

This will:

Launch PixeLAW core infrastructure (Katana, Torii, Dashboard)
Wait for services to be ready
Deploy all 7 example apps with proper permissions
Initialize each app for immediate use

Access the dashboard: http://localhost:3000

To stop everything:

make stop

Deploy Individual App

cd examples
# Start core infrastructure first
make start_core
# Deploy specific app
make deploy_app APP=chest
# Or use the deploy script directly
./deploy_apps.sh hunter

Available apps: chest, hunter, maze, minesweeper, pix2048, rps, tictactoe

Manual Deployment (from app directory)

cd examples/chest
# Build the app
sozo build
# Deploy to local Katana (must be running)
sozo migrate
# Test the app
sozo test

App Structure

All PixeLAW apps follow this consistent structure:

<app_name>/
├── src/
│ ├── lib.cairo # Module declarations
│ ├── app.cairo # Main app contract with interact() function
│ ├── constants.cairo # App-specific constants (name, icon, etc.)
│ └── tests.cairo # Integration tests
├── Scarb.toml # Package configuration
├── dojo_dev.toml # Dojo configuration (world name, namespace)
├── Scarb.lock # Dependency lock file
├── LICENSE # MIT License
└── README.md # App-specific documentation

Key Files

`src/lib.cairo`

Module declarations with test configuration:

modapp;
modconstants;
#[cfg(test)]
modtests;

`src/app.cairo`

Main application logic:

#[dojo::contract]
modmy_app {
usepixelaw::core::actions::{IActionsDispatcher, IActionsDispatcherTrait};
#[abi(embed_v0)]
implMyAppImplofIMyApp<ContractState> {
fninteract(refself:ContractState, position:Position) {
letcore=get_core_actions(refself.world());
// Your game logiccore.update_pixel(...);
}
}
// Initialize app (called automatically by Dojo)
#[dojo::init]
fndojo_init(world:@IWorldDispatcher, systems:@Array<felt252>) {
letcore=get_core_actions_from(world);
core.new_app(0.try_into().unwrap(), APP_KEY, APP_ICON);
}
}

`Scarb.toml`

Package configuration with dependencies:

[package]
name = "my_app"version = "1.7.1"
[dependencies]
dojo = { git = "https://github.com/dojoengine/dojo", tag = "v1.7.1" }
pixelaw = { git = "https://github.com/pixelaw/core", branch = "main" }
[dev-dependencies]
pixelaw_test_utils = { git = "https://github.com/pixelaw/core", branch = "main" }
[cairo]
sierra-replace-ids = trueallow-prebuilt-plugins = ["dojo_cairo_macros"]

`dojo_dev.toml`

Dojo-specific configuration:

[world]
name = "pixelaw-my_app"description = "My PixeLAW App"
[[namespaces]]
default = "my_app"
[namespaces.bindings]
pixelaw = "pixelaw"

Development Guide

Building Apps

# Build all apps
make build_all
# Build specific appcd chest
sozo build
# ⚠️ IMPORTANT: Always use `sozo build`, not `scarb build`# sozo properly compiles Dojo contracts

Testing Apps

# Test all apps
make test_all
# Test specific appcd hunter
sozo test# Run with verbose output
sozo test -v

Formatting Code

# Format all apps
make fmt_all
# Format specific appcd maze
scarb fmt

Deployment Workflow

The deploy_apps.sh script handles deployment:

#!/bin/bash
./deploy_apps.sh <app_name># What it does:# 1. Waits for Katana at localhost:5050# 2. Builds with `sozo build`# 3. Migrates with `sozo migrate --wait`# 4. Dojo auto-initializes via dojo_init function

Makefile commands:

make start # Deploy all apps (full setup)
make deploy_all # Deploy all apps to running infrastructure
make deploy_app APP=chest # Deploy individual app
make start_core # Start core infrastructure
make stop_core # Stop core infrastructure
make reset # Reset with volume cleanup

Testing Strategies

Integration Testing with pixelaw_test_utils

All apps should include comprehensive integration tests:

usepixelaw_test_utils::{setup_core, setup_apps, set_caller};
#[test]
fntest_chest_placement() {
// Setup core and appslet (world, core_actions, _) =setup_core();
// Set caller for permission checksletplayer=starknet::contract_address_const::<0x1337>();
set_caller(player);
// Test chest placementletposition=Position { x:0, y:0 };
chest_actions.place_chest(position);
// Verify stateletchest=get!(world, position, Chest);
assert(chest.placer ==player, 'wrong placer');
assert(!chest.collected, 'should not be collected');
}
#[test]
#[should_panic(expected: ('cooldown active',))]
fntest_chest_cooldown() {
// Test that cooldown prevents collectionlet (world, core_actions, _) =setup_core();
chest_actions.place_chest(position);
chest_actions.collect_chest(position); // Should panic
}

Testing Patterns

Success scenarios:

#[test]
fntest_successful_action() {
// Test normal operation
}

Failure scenarios:

#[test]
#[should_panic(expected: ('error message',))]
fntest_permission_denied() {
// Test access control
}

State validation:

#[test]
fntest_state_changes() {
// Verify pixel state before and afterletpixel_before=get!(world, position, Pixel);
app_actions.interact(position);
letpixel_after=get!(world, position, Pixel);
assert(pixel_after.color !=pixel_before.color, 'color unchanged');
}

Important Dojo 1.7.1 Breaking Changes

⚠️If upgrading from earlier Dojo versions, be aware of these breaking changes:

1. Enums MUST Derive Default

// ❌ Old (will not compile)
#[derive(Serde, Copy, Drop, Introspect)]
enumDirection {
Up,
Down,
Left,
Right
}
// ✅ New (required in Dojo 1.7.1)
#[derive(Serde, Copy, Drop, Introspect, Default)]
enumDirection {
#[default]
Up,
Down,
Left,
Right
}

2. Scarb.toml Must Allow Prebuilt Plugins

[cairo]
sierra-replace-ids = trueallow-prebuilt-plugins = ["dojo_cairo_macros"] # Required!

3. Testing Requires TEST_CLASS_HASH

// ❌ Oldletworld=spawn_test_world("pixelaw", array![]);
// ✅ Newletworld=spawn_test_world("pixelaw", array![], world::TEST_CLASS_HASH);

4. ContractAddress Conversion

// ❌ Old (deprecated)letaddr=starknet::contract_address_const::<0x1337>();
// ✅ Newletaddr:ContractAddress=0x1337.try_into().unwrap();

See DOJO_1.7.1_UPGRADE_GUIDE.md for complete migration details.

Contributing

We welcome new example apps and improvements to existing ones!

Code Style

Cairo Conventions

Functions: snake_case (e.g., place_chest, reveal_cell)
Types/Structs: PascalCase (e.g., Chest, Board)
Constants: SCREAMING_SNAKE_CASE (e.g., APP_KEY, COOLDOWN_DURATION)
Enums: PascalCase with variants in PascalCase

Modern Dojo Patterns

Use WorldStorage and ModelStorage for reading/writing models
Always derive Default for enums with #[default] attribute
Use .try_into().unwrap() for ContractAddress conversion
Include allow-prebuilt-plugins in Scarb.toml

Testing Requirements

All apps must include:

Placement/initialization tests: Verify app setup works
Success scenario tests: Test normal operation
Failure scenario tests: Test error conditions with #[should_panic]
State validation tests: Verify pixel and model state changes
Permission tests: Validate access control

Creating a New Example App

# 1. Create directory
mkdir examples/my_app
cd examples/my_app
# 2. Initialize Scarb package
cat > Scarb.toml <<EOF[package]name = "my_app"version = "1.7.1"[dependencies]dojo = { git = "https://github.com/dojoengine/dojo", tag = "v1.7.1" }pixelaw = { git = "https://github.com/pixelaw/core", branch = "main" }[dev-dependencies]pixelaw_test_utils = { git = "https://github.com/pixelaw/core", branch = "main" }[cairo]sierra-replace-ids = trueallow-prebuilt-plugins = ["dojo_cairo_macros"]EOF# 3. Create dojo_dev.toml
cat > dojo_dev.toml <<EOF[world]name = "pixelaw-my_app"[[namespaces]]default = "my_app"[namespaces.bindings]pixelaw = "pixelaw"EOF# 4. Create source files
mkdir -p src
touch src/lib.cairo src/app.cairo src/constants.cairo src/tests.cairo
# 5. Implement app logic following patterns from existing apps# 6. Test locally
sozo build
sozo test# 7. Add to Makefile and submit PR

Pull Request Process

Create your app following the structure above
Add comprehensive tests covering success and failure scenarios

Run all checks:

sozo build # Must compile successfully
sozo test# All tests must pass
scarb fmt # Format code

Update README with your app in the Available Apps table
Create PR with:
- Description of game mechanics
- Demo video or screenshots (if applicable)
- Link to any related issues

Development Commands Reference

Makefile Commands

# Deployment
make start # Deploy all apps (full setup)
make start_core # Start core infrastructure
make stop # Stop everything
make stop_core # Stop core only
make reset # Reset with volume cleanup# App Operations
make deploy_all # Deploy all apps
make deploy_app APP=chest # Deploy individual app
make build_all # Build all apps
make test_all # Test all apps
make fmt_all # Format all apps# Monitoring
make log_katana # View Katana logs
make log_torii # View Torii logs
make log_bots # View bot logs
make shell # Access container shell

Docker Compose Services

# Services run at:# - Katana (blockchain): http://localhost:5050# - Torii (indexer): http://localhost:8080# - Dashboard: http://localhost:3000# View status
docker compose ps
# View all logs
docker compose logs -f
# View specific service
docker compose logs -f katana
docker compose logs -f torii
# Restart service
docker compose restart katana

Resources

Documentation

PixeLAW Book: pixelaw.github.io/book
Dojo Framework: book.dojoengine.org
Cairo Language: book.cairo-lang.org
Dojo 1.7.1 Migration: DOJO_1.7.1_UPGRADE_GUIDE.md

Related Repositories

Core Contracts: ../core/ - PixeLAW foundational framework
SDK (pixelaw.js): ../pixelaw.js/ - TypeScript SDK for frontend integration
Frontend (Vanilla): ../vanilla/ - React client for PixeLAW

Individual App Documentation

Each app has its own README with specific implementation details:

chest/README.md - Cooldown mechanics
hunter/README.md - Randomness patterns
maze/README.md - Grid navigation
minesweeper/README.md - Complex state management
pix2048/README.md - Multi-pixel coordination
rps/README.md - Commit-reveal pattern
tictactoe/README.md - AI integration

Community

Discord: Join PixeLAW Discord
Twitter: @0xpixelaw
GitHub Issues: Report bugs or request features

Credits

Contribution	Developer
pix2048	MetaCat

License

All examples are licensed under the MIT License - see individual LICENSE files for details.

Built with ❤️ by the PixeLAW community

🎮 Try PixeLAW • 📖 Read the Docs • 💬 Join Discord

Name		Name	Last commit message	Last commit date
.claude/agents		.claude/agents
.github/workflows		.github/workflows
chest		chest
hunter		hunter
maze		maze
minesweeper		minesweeper
pix2048		pix2048
rps		rps
tictactoe		tictactoe
.actrc		.actrc
.gitignore		.gitignore
.mcp.json		.mcp.json
.tool-versions		.tool-versions
CLAUDE.md		CLAUDE.md
DOJO_1.7.1_UPGRADE_GUIDE.md		DOJO_1.7.1_UPGRADE_GUIDE.md
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
deploy_apps.sh		deploy_apps.sh

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PixeLAW Examples

What are PixeLAW Examples?

Architecture

Available Apps

App Patterns & Architecture

🎯 Simple Single-Pixel Interactions

🎲 Complex Grid Games

⚔️ Player vs Player Competition

🤖 AI Integration

Version Compatibility

Quick Start

Prerequisites

Deploy All Apps (Recommended)

Deploy Individual App

Manual Deployment (from app directory)

App Structure

Key Files

src/lib.cairo

src/app.cairo

Scarb.toml

dojo_dev.toml

Development Guide

Building Apps

Testing Apps

Formatting Code

Deployment Workflow

Testing Strategies

Integration Testing with pixelaw_test_utils

Testing Patterns

Important Dojo 1.7.1 Breaking Changes

1. Enums MUST Derive Default

2. Scarb.toml Must Allow Prebuilt Plugins

3. Testing Requires TEST_CLASS_HASH

4. ContractAddress Conversion

Contributing

Code Style

Cairo Conventions

Modern Dojo Patterns

Testing Requirements

Creating a New Example App

Pull Request Process

Development Commands Reference

Makefile Commands

Docker Compose Services

Resources

Documentation

Related Repositories

Individual App Documentation

Community

Credits

License

About

Resources

Stars

Watchers

Forks

Releases

Packages

Contributors

Languages

`src/lib.cairo`

`src/app.cairo`

`Scarb.toml`

`dojo_dev.toml`