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update vDODO

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This commit is contained in:
owen05
2021-02-01 11:17:51 +08:00
parent eb0b6ca13d
commit c7e22612bc
1 changed files with 44 additions and 27 deletions
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71
contracts/DODOToken/vDODOToken.sol
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@@ -21,7 +21,7 @@ interface IGovernance {
interface IDODOLockedHelper {
function getDodoLockedAmount() external returns (uint256);
function getDodoLockedAmount() external view returns (uint256);
}
@@ -123,7 +123,7 @@ contract vDODOToken is InitializableOwnable ,ReentrancyGuard{
}
function changePerReward(uint256 _dodoPerBlock) public onlyOwner {
_updateAlpha();
_updateAlpha(getAlpha());
dodoPerBlock = _dodoPerBlock;
emit ChangePerReward(dodoPerBlock);
}
@@ -161,15 +161,15 @@ contract vDODOToken is InitializableOwnable ,ReentrancyGuard{
_dodoAmount
);
_updateAlpha();
uint tmpAlpha = getAlpha();
UserInfo storage user = userInfo[msg.sender];
user.vdodoAmount = user.vdodoAmount.add(_dodoAmount.div(alpha));
user.vdodoAmount = user.vdodoAmount.add(_dodoAmount.div(tmpAlpha));
if(user.superior == address(0) && _superiorAddress != address(0) && _superiorAddress != msg.sender){
user.superior = _superiorAddress;
}
uint256 _dodoAmountDivAlpha = DecimalMath.divFloor(_dodoAmount, alpha);
uint256 _dodoAmountDivAlpha = DecimalMath.divFloor(_dodoAmount, tmpAlpha);
if(user.superior != address(0)){
UserInfo storage superiorUser = userInfo[user.superior];
@@ -183,6 +183,8 @@ contract vDODOToken is InitializableOwnable ,ReentrancyGuard{
totalSupply = totalSupply.add(_dodoAmountDivAlpha);
}
_updateAlpha(tmpAlpha);
emit Deposit(msg.sender, _superiorAddress, _dodoAmount);
}
@@ -193,38 +195,30 @@ contract vDODOToken is InitializableOwnable ,ReentrancyGuard{
require(userAmount >= _vDodoAmount, "vDODOToken: no enough vdodo token");
require(!user.hasParticipateGov, "vDODOToken: hasParticipateGov");
_updateAlpha();
uint256 tmpAlpha = getAlpha();
user.vdodoAmount = userAmount.sub(_vDodoAmount);
if(user.superior != address(0)) {
UserInfo storage superiorUser = userInfo[user.superior];
superiorUser.vdodoAmount = superiorUser.vdodoAmount.sub(_vDodoAmount.mul(_MAG_SP_AMOUNT_).div(100));
uint256 _overdraft = _vDodoAmount.mul(alpha).mul(_MAG_SP_AMOUNT_).div(100);
uint256 _overdraft = _vDodoAmount.mul(tmpAlpha).mul(_MAG_SP_AMOUNT_).div(100);
superiorUser.overdraft = superiorUser.overdraft.sub(_overdraft);
totalSupply = totalSupply.sub(_vDodoAmount.mul(_MAG_SP_AMOUNT_ + 100).div(100));
} else {
totalSupply = totalSupply.sub(_vDodoAmount);
}
(uint256 dodoReceive, uint256 destroyDodoAmount, uint256 withdrawFeeAmount) = getWithdrawAmount(_vDodoAmount);
uint256 feeRatio = _checkReward();
IERC20(_DODO_TOKEN_).transfer(msg.sender, dodoReceive);
_transfer(address(this), address(0), destroyDodoAmount);
uint256 withdrawDodoAmount = alpha.mul(_vDodoAmount);
tmpAlpha = tmpAlpha.add(withdrawFeeAmount.div(totalSupply));
_updateAlpha(tmpAlpha);
uint256 withdrawFeeAmount = DecimalMath.mulCeil(withdrawDodoAmount,feeRatio).div(100);
uint256 dodoReceive = withdrawDodoAmount.sub(withdrawFeeAmount);
IERC20(_DODO_TOKEN_).transfer(msg.sender, dodoReceive);
if(dodoFeeDestroyRatio > 0){
uint256 destroyDodoAmount = DecimalMath.mulCeil(withdrawDodoAmount,dodoFeeDestroyRatio).div(100);
_transfer(address(this), address(0), destroyDodoAmount);
withdrawFeeAmount = withdrawFeeAmount.sub(destroyDodoAmount);
}
alpha = alpha.add(withdrawFeeAmount.div(totalSupply));
emit Withdraw(msg.sender, _vDodoAmount);
}
@@ -298,18 +292,41 @@ contract vDODOToken is InitializableOwnable ,ReentrancyGuard{
withDrawAmount = user.vdodoAmount.mul(alpha).sub(user.overdraft);
}
// ============ internal function ============
function _updateAlpha() internal {
function getAlpha() public view returns (uint256) {
uint256 accuDODO = dodoPerBlock * (block.number.sub(lastRewardBlock));
if(totalSupply > 0){
alpha = alpha.add(accuDODO.div(totalSupply));
return alpha.add(accuDODO.div(totalSupply));
}else {
return alpha;
}
}
function getWithdrawAmount(uint256 vDodoAmount) public view returns(uint256 dodoReceive, uint256 destroyDodoAmount, uint256 withdrawFeeAmount) {
uint256 feeRatio = _checkReward();
uint256 tmpAlpha = getAlpha();
uint256 withdrawDodoAmount = tmpAlpha.mul(vDodoAmount);
withdrawFeeAmount = DecimalMath.mulCeil(withdrawDodoAmount,feeRatio).div(100);
dodoReceive = withdrawDodoAmount.sub(withdrawFeeAmount);
if(dodoFeeDestroyRatio > 0){
destroyDodoAmount = DecimalMath.mulCeil(withdrawDodoAmount,dodoFeeDestroyRatio).div(100);
withdrawFeeAmount = withdrawFeeAmount.sub(destroyDodoAmount);
}else {
destroyDodoAmount = 0;
}
}
// ============ internal function ============
function _updateAlpha(uint256 newAlpha) internal {
alpha = newAlpha;
lastRewardBlock = block.number;
}
// ============= Helper and calculation function ===============
function _checkReward() internal returns (uint256) {
function _checkReward() internal view returns (uint256) {
uint256 dodoTotalLockedAmout = IDODOLockedHelper(_DODO_LOCKED_HELPER_).getDodoLockedAmount();
// (x - 1)^2 / 81 + (y - 15)^2 / 100 = 1 ==> y = sqrt(100* (x*x +2x ) / 81)) +15
// y = 5 (x ≤ 1)