35 lines
806 B
Solidity
35 lines
806 B
Solidity
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/*
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Copyright 2020 DODO ZOO.
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SPDX-License-Identifier: Apache-2.0
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*/
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pragma solidity 0.6.9;
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interface IRandomGenerator {
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function random() external view returns (uint256);
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}
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interface IDODOMidPrice {
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function getMidPrice() external view returns (uint256 midPrice);
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}
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contract RandomGenerator {
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address[] internal pools;
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constructor(address[] memory _pools) public {
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for (uint256 i = 0; i < pools.length; i++) {
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pools.push(_pools[i]);
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}
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}
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function random() external view returns (uint256) {
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uint256 priceSum;
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for (uint256 i = 0; i < pools.length; i++) {
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priceSum += IDODOMidPrice(pools[i]).getMidPrice();
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}
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return uint256(keccak256(abi.encodePacked(blockhash(block.number-1), priceSum)));
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}
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}
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