add simple task to call receiver

hardhat.config.ts

@@ -7,6 +7,7 @@ import "uniswap-v2-deploy-plugin";
 import "solidity-coverage";
 import "hardhat-gas-reporter";
 import "./tasks/addresses";
+import "./tasks/localnet";
 import "@openzeppelin/hardhat-upgrades";
 
 import { getHardhatConfigNetworks } from "@zetachain/networks";

scripts/readme.md

@@ -0,0 +1,16 @@
+## Worker script
+
+To start local hardhat node execute:
+
+```
+yarn localnode
+```
+
+To start localnet using local hardhat:
+```
+yarn localnet
+```
+This will run worker script, which will deploy all contracts, and listen and react to events, facilitating communication between contracts.
+
+
+

scripts/worker.ts

@@ -117,9 +117,15 @@ export const startLocalnet = async () => {
   await ZRC20Contract.connect(fungibleModuleSigner).deposit(senderZEVM.address, parseEther("100"));
   console.log("ZEVM: Fungible module deposited 100TKN to sender:", senderZEVM.address);
 
-  gatewayEVM.on("Deposit", (...args: Array<any>) => {
-    console.log("EVM: GatewayEVM Deposit event:", args);
-    console.log("payload: ", args[5].args["payload"]);
+  gatewayZEVM.on("Call", async (...args: Array<any>) => {
+    console.log("Worker: Call event on GatewayZEVM.");
+    console.log("Worker: Calling ReceiverEVM through GatewayEVM...");
+    const executeTx = await gatewayEVM.execute(receiverEVM.address, args[3].args.message, { value: 0 });
+    await executeTx.wait();
+  });
+
+  receiverEVM.on("ReceivedA", () => {
+    console.log("ReceiverEVM: receiveA called!");
   });
 
   process.stdin.resume();

tasks/localnet.ts

@@ -0,0 +1,26 @@
+import { task } from "hardhat/config";
+
+declare const hre: any;
+
+// Contains tasks to make it easier to interact with prototype contracts localnet
+// To make use of default contract addresses on localnet, start localnode and localnet from scratch, so contracts are deployed on same addresses
+// Otherwise, provide custom addresses as parameters
+
+task("call-evm-receiver", "calls evm receiver from zevm account")
+  .addOptionalParam("gatewayZEVM", "contract address of gateway on ZEVM", "0x5133BBdfCCa3Eb4F739D599ee4eC45cBCD0E16c5")
+  .addOptionalParam("receiverEVM", "contract address of receiver on EVM", "0xB06c856C8eaBd1d8321b687E188204C1018BC4E5")
+  .setAction(async (taskArgs) => {
+    const gatewayZEVM = await hre.ethers.getContractAt("GatewayZEVM", taskArgs.gatewayZEVM);
+    const receiverEVM = await hre.ethers.getContractAt("ReceiverEVM", taskArgs.receiverEVM);
+
+    const str = "Hello!";
+    const num = 42;
+    const flag = true;
+
+    // Encode the function call data and call on zevm
+    const message = receiverEVM.interface.encodeFunctionData("receiveA", [str, num, flag]);
+    const callTx = await gatewayZEVM.call(hre.ethers.utils.arrayify(receiverEVM.address), message);
+
+    await callTx.wait();
+    console.log("ReceiverEVM called from ZEVM");
+  });