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// contracts/GameItems.sol | |
// SPDX-License-Identifier: MIT | |
pragma solidity ^0.8.7; | |
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol"; | |
import "@openzeppelin/contracts/access/Ownable.sol"; | |
import "@openzeppelin/contracts/utils/Strings.sol"; | |
contract GameItems is ERC1155, Ownable { | |
uint256 public constant CHARIZARD = 0; | |
uint256 public constant IVYSAUR = 1; | |
uint256 public constant VENUSAUR = 2; | |
uint256 public constant CHARMANDER = 3; | |
mapping (uint256 => string) private _uris; | |
constructor() public ERC1155("https://bafybeihul6zsmbzyrgmjth3ynkmchepyvyhcwecn2yxc57ppqgpvr35zsq.ipfs.dweb.link/{id}.json") { | |
_mint(msg.sender, CHARIZARD, 100, ""); | |
_mint(msg.sender, IVYSAUR, 100, ""); | |
_mint(msg.sender, VENUSAUR, 100, ""); | |
_mint(msg.sender, CHARMANDER, 100, ""); | |
} | |
function uri(uint256 tokenId) override public view returns (string memory) { | |
return(_uris[tokenId]); | |
} | |
function setTokenUri(uint256 tokenId, string memory uri) public onlyOwner { | |
require(bytes(_uris[tokenId]).length == 0, "Cannot set uri twice"); | |
_uris[tokenId] = uri; | |
} | |
} |
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