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// SPDX-License-Identifier: MIT | ||
pragma solidity >=0.8.0; | ||
/// [MIT License] | ||
/// @title Base64 | ||
/// @notice Provides a function for encoding some bytes in base64 | ||
/// @author Brecht Devos <[email protected]> | ||
library Base64 { | ||
bytes internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; | ||
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/// @notice Encodes some bytes to the base64 representation | ||
function encode(bytes memory data) internal pure returns (string memory) { | ||
uint256 len = data.length; | ||
if (len == 0) return ""; | ||
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// multiply by 4/3 rounded up | ||
uint256 encodedLen = 4 * ((len + 2) / 3); | ||
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// Add some extra buffer at the end | ||
bytes memory result = new bytes(encodedLen + 32); | ||
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bytes memory table = TABLE; | ||
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assembly { | ||
let tablePtr := add(table, 1) | ||
let resultPtr := add(result, 32) | ||
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for { | ||
let i := 0 | ||
} lt(i, len) { | ||
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} { | ||
i := add(i, 3) | ||
let input := and(mload(add(data, i)), 0xffffff) | ||
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let out := mload(add(tablePtr, and(shr(18, input), 0x3F))) | ||
out := shl(8, out) | ||
out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF)) | ||
out := shl(8, out) | ||
out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF)) | ||
out := shl(8, out) | ||
out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF)) | ||
out := shl(224, out) | ||
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mstore(resultPtr, out) | ||
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resultPtr := add(resultPtr, 4) | ||
} | ||
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switch mod(len, 3) | ||
case 1 { | ||
mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) | ||
} | ||
case 2 { | ||
mstore(sub(resultPtr, 1), shl(248, 0x3d)) | ||
} | ||
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mstore(result, encodedLen) | ||
} | ||
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return string(result); | ||
} | ||
} |
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// SPDX-License-Identifier: MIT | ||
pragma solidity >=0.8.0; | ||
import "./LootSuit.sol"; | ||
import "./Base64.sol"; | ||
import './MRandom.sol'; | ||
import "@openzeppelin/contracts/utils/Strings.sol"; | ||
import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; | ||
import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; | ||
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contract MLoot is Suit, ERC721,MRandom { | ||
using Strings for uint256; | ||
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constructor( | ||
string memory _desc, | ||
string memory symbol, | ||
string memory name, | ||
string memory _notRevealedInfo, | ||
uint256 _waitBlockCount | ||
) ERC721(symbol, name) { | ||
desc = _desc; | ||
owner = msg.sender; | ||
waitBlockCount = _waitBlockCount; | ||
notRevealedInfo = _notRevealedInfo; | ||
} | ||
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struct Loot { | ||
uint256 randomId; | ||
address owner; | ||
string Weapon; | ||
string Chest; | ||
string Head; | ||
string Waist; | ||
string Foot; | ||
string Hand; | ||
string Neck; | ||
string Ring; | ||
RandomState state; | ||
} | ||
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uint256 public tokenId; | ||
uint256 public waitBlockCount; | ||
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address owner; | ||
string desc; | ||
string notRevealedInfo; | ||
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mapping(uint256 => Loot) public lootList; | ||
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modifier onlyOwner() { | ||
require(msg.sender == owner); | ||
_; | ||
} | ||
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function tokenURI( | ||
uint256 _tokenId | ||
) public view override returns (string memory) { | ||
string[17] memory parts; | ||
Loot memory loot = lootList[_tokenId]; | ||
if(loot.state == RandomState.Pending){ | ||
string memory r = string( | ||
abi.encodePacked( | ||
"data:application/json;base64,", | ||
notRevealedInfo | ||
) | ||
); | ||
return r; | ||
} | ||
require(loot.state != RandomState.Inited, "Box not existed"); | ||
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parts[ | ||
0 | ||
] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: white; font-family: serif; font-size: 14px; }</style><rect width="100%" height="100%" fill="black" /><text x="10" y="20" class="base">'; | ||
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parts[1] = loot.Weapon; | ||
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parts[2] = '</text><text x="10" y="40" class="base">'; | ||
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parts[3] = loot.Chest; | ||
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parts[4] = '</text><text x="10" y="60" class="base">'; | ||
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parts[5] = loot.Head; | ||
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parts[6] = '</text><text x="10" y="80" class="base">'; | ||
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parts[7] = loot.Waist; | ||
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parts[8] = '</text><text x="10" y="100" class="base">'; | ||
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parts[9] = loot.Foot; | ||
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parts[10] = '</text><text x="10" y="120" class="base">'; | ||
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parts[11] = loot.Hand; | ||
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parts[12] = '</text><text x="10" y="140" class="base">'; | ||
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parts[13] = loot.Neck; | ||
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parts[14] = '</text><text x="10" y="160" class="base">'; | ||
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parts[15] = loot.Ring; | ||
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parts[16] = "</text></svg>"; | ||
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string memory output = string( | ||
abi.encodePacked( | ||
parts[0], | ||
parts[1], | ||
parts[2], | ||
parts[3], | ||
parts[4], | ||
parts[5], | ||
parts[6], | ||
parts[7], | ||
parts[8] | ||
) | ||
); | ||
output = string( | ||
abi.encodePacked( | ||
output, | ||
parts[9], | ||
parts[10], | ||
parts[11], | ||
parts[12], | ||
parts[13], | ||
parts[14], | ||
parts[15], | ||
parts[16] | ||
) | ||
); | ||
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string memory json = Base64.encode( | ||
bytes( | ||
string( | ||
abi.encodePacked( | ||
'{"name": "MLoot #', | ||
_tokenId.toString(), | ||
'", "description":"', | ||
desc, | ||
'","image": "data:image/svg+xml;base64,', | ||
Base64.encode(bytes(output)), | ||
'"}' | ||
) | ||
) | ||
) | ||
); | ||
output = string( | ||
abi.encodePacked("data:application/json;base64,", json) | ||
); | ||
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return output; | ||
} | ||
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function luck( | ||
uint8 rand, | ||
string[] memory sourceArray | ||
) internal view returns (string memory) { | ||
string memory output = sourceArray[rand % sourceArray.length]; | ||
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uint256 greatness = rand % 21; | ||
if (greatness > 14) { | ||
output = string( | ||
abi.encodePacked(output, " ", suffixes[rand % suffixes.length]) | ||
); | ||
} | ||
if (greatness >= 19) { | ||
string[2] memory name; | ||
name[0] = namePrefixes[rand % namePrefixes.length]; | ||
name[1] = nameSuffixes[rand % nameSuffixes.length]; | ||
if (greatness == 19) { | ||
output = string( | ||
abi.encodePacked('"', name[0], " ", name[1], '" ', output) | ||
); | ||
} else { | ||
output = string( | ||
abi.encodePacked( | ||
'"', | ||
name[0], | ||
" ", | ||
name[1], | ||
'" ', | ||
output, | ||
" +1" | ||
) | ||
); | ||
} | ||
} | ||
return output; | ||
} | ||
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function revealNFT(uint256 _tokenId) external { | ||
Loot storage loot = lootList[_tokenId]; | ||
require(loot.owner == msg.sender, "only owner can reveal the box"); | ||
uint8[] memory random_numbers = getRandom(loot.randomId, 8,waitBlockCount); | ||
loot.Weapon = luck(random_numbers[0], weapons); | ||
loot.Chest = luck(random_numbers[1], chestArmor); | ||
loot.Head = luck(random_numbers[2], headArmor); | ||
loot.Waist = luck(random_numbers[3], waistArmor); | ||
loot.Foot = luck(random_numbers[4], footArmor); | ||
loot.Hand = luck(random_numbers[5], handArmor); | ||
loot.Neck = luck(random_numbers[6], necklaces); | ||
loot.Ring = luck(random_numbers[7], rings); | ||
loot.state = RandomState.Confirmed; | ||
} | ||
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function mint() external { | ||
// init loot box | ||
Loot storage loot = lootList[tokenId]; | ||
loot.owner = msg.sender; | ||
loot.state = RandomState.Pending; | ||
loot.randomId = randomId; | ||
requestRandom(randomId); | ||
_mint(msg.sender, tokenId); | ||
tokenId++; | ||
randomId++; | ||
} | ||
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function withdraw(address to) public onlyOwner { | ||
uint256 balance = address(this).balance; | ||
require(balance > 0, "sufficient funds"); | ||
payable(to).transfer(balance); | ||
} | ||
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function withdrawErc20( | ||
address _targetAddress, | ||
address _contractAddress, | ||
uint256 _amount | ||
) external onlyOwner { | ||
IERC20(_contractAddress).transfer(_targetAddress, _amount); | ||
} | ||
function getStructInfo(uint256 _tokenId) external view returns(string memory,string memory,string memory,string memory,string memory,string memory,string memory,string memory){ | ||
Loot memory loot = lootList[_tokenId]; | ||
require(loot.state == RandomState.Confirmed,"User not exists"); | ||
return(loot.Weapon, | ||
loot.Chest, | ||
loot.Head, | ||
loot.Waist, | ||
loot.Foot, | ||
loot.Hand, | ||
loot.Neck, | ||
loot.Ring); | ||
} | ||
} |
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