The Scriptorium

Smart Assembly code templates and tools for on-chain development in Eve Frontier.

Basic Smart Gate

Gate Mechanics

A minimal Smart Gate implementation that controls access through a stargate. Allows the owner to toggle the gate open or closed and checks access before allowing passage.

gateaccess-controlstarter

basic-smart-gate.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import { SmartGateBase } from "@eveworld/smart-gate/SmartGateBase.sol";

/**
 * @title BasicSmartGate
 * @notice Minimal gate that the owner can open or close.
 */
contract BasicSmartGate is SmartGateBase {
    bool public isOpen;
    address public owner;

    constructor() {
        owner = msg.sender;
        isOpen = true;
    }

    modifier onlyOwner() {
        require(msg.sender == owner, "Not gate owner");
        _;
    }

    /// @notice Toggle gate open/closed
    function setOpen(bool _open) external onlyOwner {
        isOpen = _open;
    }

    /// @notice Called by the World when a ship requests passage
    function canJump(
        address caller,
        uint256 /* shipId */
    ) external view override returns (bool) {
        if (!isOpen) return false;
        // Allow all pilots when open
        return caller != address(0);
    }
}