[dependencies]
alexandria_math = { git = "https://github.com/keep-starknet-strange/alexandria.git" }
alexandria_data_structures = { git = "https://github.com/keep-starknet-strange/alexandria.git" }
alexandria_encoding = { git = "https://github.com/keep-starknet-strange/alexandria.git" }
alexandria_sorting = { git = "https://github.com/keep-starknet-strange/alexandria.git" }
# Add others as needed...

// Example: validating a prime-based game mechanic
use alexandria_math::is_prime::is_prime;
use alexandria_math::fast_power::fast_power;
use alexandria_math::{BitShift, U32BitShift};
 
#[derive(Copy, Drop, Serde)]
#[dojo::model]
pub struct Player {
    #[key] pub address: ContractAddress,
    pub score: u128,
    pub level: u32,
}
 
// Verify if player's score qualifies for prime number bonus
fn check_prime_bonus(world: WorldStorage, player: ContractAddress) -> bool {
    let player_data: Player = world.read_model(player);
 
    // Check if score is prime
    is_prime(player_data.score, 10)
}
 
// Calculate exponential level progression
fn calculate_experience_needed(level: u32) -> u128 {
    // Experience needed = 1000 * 2^level
    1000 * fast_power(2_u128, level.into())
}
 
// Use bitwise operations for efficient flag checking
fn check_player_permissions(permissions: u32, action: u32) -> bool {
    // Use bit shift to check if specific permission bit is set
    (permissions & U32BitShift::shl(1, action)) != 0
}

// Example: managing a turn-based game queue
use alexandria_data_structures::stack::StackTrait;
use alexandria_data_structures::queue::QueueTrait;
 
#[derive(Copy, Drop, Serde)]
#[dojo::model]
pub struct GameSession {
    #[key] pub game_id: u32,
    pub current_turn: u32,
    pub players_count: u8,
}
 
// Track undo/redo actions with stack
fn manage_game_history(ref game_stack: Felt252Stack<u32>, action: u32) {
    game_stack.push(action);
 
    // Limit history to last 10 actions
    while game_stack.len() > 10 {
        game_stack.pop();
    }
}
 
// Process player turns in order with queue
fn process_turn_queue(ref turn_queue: Queue<ContractAddress>) -> ContractAddress {
    match turn_queue.dequeue() {
        Option::Some(player) => {
            // Re-add player to end of queue for next round
            turn_queue.enqueue(player);
            player
        },
        Option::None => panic!("No players in queue")
    }
}

// Example: maintaining leaderboards and finding player rankings
use alexandria_sorting::merge_sort::MergeSort;
use alexandria_searching::binary_search::binary_search;
 
#[derive(Copy, Drop, Serde)]
#[dojo::model]
pub struct Leaderboard {
    #[key] pub season: u32,
    pub scores: Array<u128>,
    pub players: Array<ContractAddress>,
}
 
// Sort player scores for leaderboard display
fn update_leaderboard(ref world: WorldStorage, season: u32, new_scores: Array<u128>) {
    let sorted_scores = MergeSort::sort(new_scores.span());
 
    world.write_model(@Leaderboard {
        season,
        scores: sorted_scores,
        players: array![], // Would need corresponding player array
    });
}
 
// Find player's ranking efficiently
fn find_player_rank(scores: Span<u128>, player_score: u128) -> Option<u32> {
    binary_search(scores, player_score)
}

// Example: encoding game data for off-chain storage or cross-chain communication
use alexandria_encoding::base64::{Base64ByteArrayEncoder, Base64ByteArrayDecoder};
use alexandria_encoding::rlp::{RLPTrait};
 
#[derive(Drop, Serde)]
pub struct GameState {
    pub round: u32,
    pub players: Array<ContractAddress>,
    pub moves: Array<u8>,
}
 
// Encode game state for external storage
fn encode_game_state(game_state: GameState) -> ByteArray {
    let mut encoded_data = ArrayTrait::new();
    game_state.serialize(ref encoded_data);
 
    // Convert to ByteArray then Base64 encode
    let byte_data = ByteArrayTrait::from_span(encoded_data.span());
    Base64ByteArrayEncoder::encode(byte_data)
}
 
// Decode incoming game data
fn decode_game_state(encoded_data: ByteArray) -> GameState {
    let decoded = Base64ByteArrayDecoder::decode(encoded_data);
    // Convert decoded bytes to span and deserialize
    let mut decoded_span = decoded.into_span();
    Serde::<GameState>::deserialize(ref decoded_span).unwrap()
}