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Make rate function extensible in crowdsale #527

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Make rate function extensible in crowdsale #527

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9 changes: 8 additions & 1 deletion contracts/crowdsale/Crowdsale.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -73,7 +73,8 @@ contract Crowdsale {
uint256 weiAmount = msg.value;

// calculate token amount to be created
uint256 tokens = weiAmount.mul(rate);
uint256 _rate = getRate(beneficiary, weiAmount, now);
uint256 tokens = weiAmount.mul(_rate);

// update state
weiRaised = weiRaised.add(weiAmount);
Expand All @@ -83,6 +84,12 @@ contract Crowdsale {

forwardFunds();
}

// low level get rate function
// override to create custom rate function, like giving bonus for early contributors or whitelist addresses
function getRate(address beneficiary, uint256 weiAmount, uint256 time) returns (uint256){
return rate;
}

// send ether to the fund collection wallet
// override to create custom fund forwarding mechanisms
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