feat(world): return world address from WorldFactory

.changeset/six-kangaroos-sneeze.md

@@ -0,0 +1,5 @@
+---
+"@latticexyz/world": minor
+---
+
+Return address of the newly created World from `WorldFactory.deployWorld`.

packages/world/src/IWorldFactory.sol

@@ -22,6 +22,7 @@ interface IWorldFactory {
   /**
    * @notice Deploys a new World contract.
    * @dev The deployment of the World contract will result in the `WorldDeployed` event being emitted.
+   * @return worldAddress The address of the newly deployed World contract.
    */
-  function deployWorld() external;
+  function deployWorld() external returns (address worldAddress);
 }

packages/world/src/WorldFactory.sol

@@ -26,13 +26,14 @@ contract WorldFactory is IWorldFactory {
   }
 
   /**
-   * @notice Deploys a new World instance, sets the CoreModule and transfers its ownership to the caller.
+   * @notice Deploys a new World instance, installs the CoreModule and transfers ownership to the caller.
    * @dev Uses the Create2 for deterministic deployment.
+   * @return worldAddress The address of the newly deployed World contract.
    */
-  function deployWorld() public {
+  function deployWorld() public returns (address worldAddress) {
     // Deploy a new World and increase the WorldCount
     bytes memory bytecode = type(World).creationCode;
-    address worldAddress = Create2.deploy(bytecode, worldCount++);
+    worldAddress = Create2.deploy(bytecode, worldCount++);
     IBaseWorld world = IBaseWorld(worldAddress);
 
     // Initialize the World and transfer ownership to the caller