Immutable zkEVM - Gaming L2

// Batch multiple game actions in a single transaction
async function batchGameActions(actions) {
  const receipt = await provider.waitForTransaction(txHash, 1);

  // Fast confirmation for real-time gaming
  console.log('Transaction confirmed in:', receipt.blockNumber);

  return receipt;
}

// Efficient gas estimation for gaming transactions
const gasEstimate = await provider.estimateGas(tx);

// Immutable zkEVM optimized for gaming workloads
const optimizedGas = Math.ceil(gasEstimate * 1.1); // 10% buffer

// Set gas with gaming-optimized pricing
const txWithGas = {
  ...tx,
  gasLimit: optimizedGas,
  maxFeePerGas: await provider.getFeeData().maxFeePerGas
};

// Query game events with optimized batching
async function getGameEvents(contract, eventName, fromBlock = 0) {
  const filter = contract.filters[eventName]();
  const events = [];
  const batchSize = 5000; // Immutable zkEVM optimized batch size

  for (let i = fromBlock; i <= currentBlock; i += batchSize) {
    const batch = await contract.queryFilter(
      filter,
      i,
      Math.min(i + batchSize - 1, currentBlock)
    );
    events.push(...batch);
  }

  return events;
}

const batch = [
  { method: 'eth_blockNumber', params: [] },
  { method: 'eth_gasPrice', params: [] },
  { method: 'eth_getBalance', params: [address, 'latest'] }
];

const results = await provider.send(batch);

// Singleton pattern for provider
class ImmutableProvider {
  static instance = null;

  static getInstance() {
    if (!this.instance) {
      this.instance = new JsonRpcProvider(
        'https://api-immutable-zkevm-mainnet.n.dwellir.com/YOUR_API_KEY'
      );
    }
    return this.instance;
  }
}

const cache = new Map();

async function getCachedBlockData(blockNumber) {
  const key = `block_${blockNumber}`;

  if (!cache.has(key)) {
    const block = await provider.getBlock(blockNumber);
    cache.set(key, block);
  }

  return cache.get(key);
}

// Check IMX balance for gas fees
const balance = await provider.getBalance(address);
const gasEstimate = await provider.estimateGas(tx);
const gasPrice = await provider.getGasPrice();
const totalRequired = gasEstimate * gasPrice + (tx.value || 0n);

if (balance < totalRequired) {
  throw new Error(`Need ${totalRequired - balance} more IMX`);
}

// Get current fee data with gaming-optimized settings
const feeData = await provider.getFeeData();

const tx = {
  to: recipient,
  value: amount,
  maxFeePerGas: feeData.maxFeePerGas,
  maxPriorityFeePerGas: Math.max(
    feeData.maxPriorityFeePerGas,
    10000000000n // 10 gwei minimum
  ),
  gasLimit: 21000n
};

async function callWithRetry(fn, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await fn();
    } catch (error) {
      if (error.code === 429 && i < maxRetries - 1) {
        await new Promise(r => setTimeout(r, 2 ** i * 1000));
      } else {
        throw error;
      }
    }
  }
}

// Before (Ethereum)
const provider = new JsonRpcProvider('https://eth-rpc.example.com');

// After (Immutable zkEVM)
const provider = new JsonRpcProvider(
  'https://api-immutable-zkevm-mainnet.n.dwellir.com/YOUR_API_KEY'
);

// Smart contracts work identically
// Same tooling and libraries
// Note: Different chain ID (13371)
// Note: Separate block numbers
// Note: IMX used for gas fees
// Note: Minimum 10 gwei priority fee

// Enhanced gaming features available
const gameContract = new Contract(address, abi, provider);

// Optimized for high-frequency gaming transactions
const batchTx = await gameContract.batchMint(
  playerAddresses,
  tokenIds,
  { gasLimit: 500000 } // Gaming-optimized gas limits
);