Simulating Deployment of the World Extension

The commented code is here: packages/contracts/script/RegisterWriteDemoSystem.s.sol (opens in a new tab).

Code

examples/WriteDemo/packages/contracts/script/RegisterWriteDemoSystem.s.sol

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.24;
 
import { Script } from "forge-std/Script.sol";
import { console2 } from "forge-std/Test.sol";
 
import { WorldRegistrationSystem } from "@latticexyz/world/src/modules/init/implementations/WorldRegistrationSystem.sol";
import { System } from "@latticexyz/world/src/System.sol";
import { ResourceId } from "@latticexyz/store/src/ResourceId.sol";
import { ResourceIds } from "@latticexyz/store/src/codegen/tables/ResourceIds.sol";
import { WorldResourceIdLib } from "@latticexyz/world/src/WorldResourceId.sol";
import { RESOURCE_SYSTEM } from "@latticexyz/world/src/worldResourceTypes.sol";
import { StoreSwitch } from "@latticexyz/store/src/StoreSwitch.sol";
 
import { WriteDemoSystem } from "../src/systems/WriteDemoSystem.sol";
 
contract RegisterWriteDemoSystem is Script {
 
  address worldAddress = vm.envAddress("WORLD_ADDRESS");
  uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY_ALICE");
  address playerAddress = vm.envAddress("ADDRESS_PLAYER");
 
  bytes14 namespace = bytes14("PluginExamples");
  bytes16 system = bytes16("WriteDemoSystem");
 
  function run() external {
    StoreSwitch.setStoreAddress(worldAddress);
 
    WorldRegistrationSystem world = WorldRegistrationSystem(worldAddress);
 
    ResourceId namespaceResource = WorldResourceIdLib.encodeNamespace(bytes14(namespace));
    ResourceId systemResource = WorldResourceIdLib.encode(RESOURCE_SYSTEM, namespace, system);
 
    vm.startBroadcast(deployerPrivateKey);
 
    bool existingNamespaceCheck = ResourceIds.getExists(namespaceResource);
    require(!existingNamespaceCheck, "Namespace already exists.");
 
    world.registerNamespace(namespaceResource);
 
    WriteDemoSystem writeDemoSystem = new WriteDemoSystem();
 
    world.registerSystem(systemResource, writeDemoSystem, true);
    world.registerFunctionSelector(systemResource, "buildIronMine()");
 
    vm.stopBroadcast();
  }
}

This is basically identical to the ReadDemo.

You can do a simulation of a deployment with the following command:

forge script script/RegisterWriteDemoSystem.s.sol --fork-url https://primodium-sepolia.rpc.caldera.xyz/http

Test Systems Deploy