remappings.txt

@@ -1,2 +1,3 @@
 @openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/
 @uniswap/v3-periphery/contracts/=lib/v3-periphery/contracts
+@uniswap/v3-core/contracts/=lib/v3-core/contracts

script/RaidGeld.s.sol

@@ -3,7 +3,6 @@ pragma solidity ^0.8.13;
 
 import {Script, console} from "forge-std/Script.sol";
 import {RaidGeld} from "../src/RaidGeld.sol";
-
 import {Constants} from "../src/Constants.sol";
 
 contract RaidGeldScript is Script, Constants {

src/Constants.sol

@@ -5,6 +5,6 @@ contract Constants {
     //base addresses
     address public constant DAO_TOKEN = 0x11dC980faf34A1D082Ae8A6a883db3A950a3c6E8;
     address public constant POOL = 0x27004f6d0c1bB7979367D32Ba9d6DF6d61A18926;
-    address public constant WETH9 = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
+    address public constant WETH = 0x4200000000000000000000000000000000000006;
-    address public constant SWAP_ROUTER_02 = 0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45;
+    address public constant SWAP_ROUTER = 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD;
 }

src/RaidGeld.sol

@@ -7,8 +7,9 @@ import '@uniswap/v3-periphery/contracts/interfaces/ISwapRouter.sol';
 import '@uniswap/v3-periphery/contracts/libraries/TransferHelper.sol';
 import {RaidGeldUtils} from "../src/RaidGeldUtils.sol";
 import {Army, Player, Raider} from "../src/RaidGeldStructs.sol";
+import "../src/Constants.sol";
 
-contract RaidGeld is ERC20, Ownable {
+contract RaidGeld is ERC20, Ownable, Constants {
 
     uint256 public constant MANTISSA = 1e4;
     uint256 public constant BUY_IN_AMOUNT = 0.0005 ether;
@@ -18,13 +19,13 @@ contract RaidGeld is ERC20, Ownable {
     mapping(address => Army) private armies;
 
     // WETH
-    IERC20 private constant weth = IERC20(Constants.WETH);
+    IERC20 public immutable weth = IERC20(WETH);
     // RGCVII token
     ERC20 public daoToken;
     // RGCVII pool
     address public pool;
     // Uniswap
-    ISwapRouter02 private constant router = ISwapRouter02(Constants.SWAP_ROUTER_02);
+    ISwapRouter private constant router = ISwapRouter(SWAP_ROUTER);
 
     // Modifier for functions that should only be available to registered players
     modifier onlyPlayer() {
@@ -46,7 +47,6 @@ contract RaidGeld is ERC20, Ownable {
     function init_player(address player) private {
         // Mint some starting tokens to the player
         _mint(player, INITIAL_GELD);
-
         // Set initial states
         players[player] =
             Player({total_minted: INITIAL_GELD, created_at: block.timestamp, last_raided_at: block.timestamp});
@@ -62,19 +62,19 @@ contract RaidGeld is ERC20, Ownable {
     // New player want to register with ETH
     function register_eth() external payable newPlayer {
         require(weth.transferFrom(msg.sender, address(this), BUY_IN_AMOUNT), "Make sure to send exactly 0.0005 eth");
-        weth.approve(address(router), amountIn);
+        TransferHelper.safeApprove(WETH, address(router), BUY_IN_AMOUNT);
-        ISwapRouter02.ExactInputSingleParams memory params = ISwapRouter02
+        ISwapRouter.ExactInputSingleParams memory params = ISwapRouter.ExactInputSingleParams({
-            .ExactInputSingleParams({
             tokenIn: WETH,
-            tokenOut: DAI,
+            tokenOut: DAO_TOKEN,
-            fee: 3000,
+            fee: 10000,
-            recipient: msg.sender,
+            recipient: address(this),
-            amountIn: amountIn,
+            deadline: block.timestamp,
-            amountOutMinimum: amountOutMin,
+            amountIn: BUY_IN_AMOUNT,
+            amountOutMinimum: 0,
             sqrtPriceLimitX96: 0
         });
         router.exactInputSingle(params);
-        init_player();
+        init_player(msg.sender);
     }
 
     // New player wants to register with dao

test/RaidGeld.t.sol

@@ -6,8 +6,10 @@ import {stdStorage, StdStorage} from "forge-std/Test.sol";
 import {RaidGeld, Army, Player} from "../src/RaidGeld.sol";
 import "../src/RaidGeldUtils.sol";
 import {Constants} from "../src/Constants.sol";
+import "@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol";
 
 contract raid_geldTest is Test, Constants {
+
     using stdStorage for StdStorage;
 
     RaidGeld public raid_geld;
@@ -27,10 +29,18 @@ contract raid_geldTest is Test, Constants {
     function fundAccount(address _acc) private {
         vm.deal(_acc, 10 ether);
         stdstore.target(DAO_TOKEN).sig("balanceOf(address)").with_key(_acc).checked_write(100 ether);
+        stdstore.target(WETH).sig("balanceOf(address)").with_key(_acc).checked_write(100 ether);
+    }
+
+    function getPoolLiquidity() public view {
+        IUniswapV3Pool pool = IUniswapV3Pool(POOL);
+        console.log(pool.liquidity());
     }
 
     function registerPlayer() private {
-        raid_geld.register_eth{value: raid_geld.BUY_IN_AMOUNT()}();
+        getPoolLiquidity();
+        raid_geld.weth().approve(address(raid_geld), raid_geld.BUY_IN_AMOUNT());
+        raid_geld.register_eth();
     }
 
     function registerPlayerWithDaoToken() private {
@@ -129,7 +139,7 @@ contract raid_geldTest is Test, Constants {
 
     function test_03_02_RGCVII_funds_can_be_withdrawn() public {
         uint256 initialBalance = raid_geld.daoToken().balanceOf(address(raid_geld));
-        
+
         // Switch to Player 1 and register it
         vm.startPrank(player1);
         registerPlayerWithDaoToken();
@@ -138,7 +148,7 @@ contract raid_geldTest is Test, Constants {
         vm.startPrank(owner);
         raid_geld.withdraw_dao();
         uint256 newBalance = raid_geld.daoToken().balanceOf(address(owner));
-        uint256 newContractBalance =  raid_geld.daoToken().balanceOf(address(raid_geld));
+        uint256 newContractBalance = raid_geld.daoToken().balanceOf(address(raid_geld));
 
         // contract balance should be empty
         assertEq(newContractBalance, 0);