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pragma solidity ^0.4.24;
import "../lib/SafeMath.sol";
import "./ITavern.sol";
contract TavernBase is ITavern {
using SafeMath for *;
struct Tavern {
uint256 initAt; // The time of tavern init
int longitude; // The longitude of tavern
int latitude; // The latitude of tavern
uint8 popularity; // The popularity of tavern
uint256 activeness; // The activeness of tavern
}
uint8 public constant decimals = 16; // longitude latitude decimals
mapping(uint256 => Tavern) internal tokenTaverns;
function _tavern(uint256 _tokenId) internal view returns (uint256, int, int, uint8, uint256) {
Tavern storage tavern = tokenTaverns[_tokenId];
return (
tavern.initAt,
tavern.longitude,
tavern.latitude,
tavern.popularity,
tavern.activeness
);
}
function _isBuilt(uint256 _tokenId) internal view returns (bool){
Tavern storage tavern = tokenTaverns[_tokenId];
return (tavern.initAt > 0);
}
function _build(
uint256 _tokenId,
int _longitude,
int _latitude,
uint8 _popularity
) internal {
// Check whether tokenid has been initialized
require(!_isBuilt(_tokenId));
require(_isLongitude(_longitude));
require(_isLatitude(_latitude));
require(_popularity != 0);
uint256 time = block.timestamp;
Tavern memory tavern = Tavern(
time, _longitude, _latitude, _popularity, uint256(0)
);
tokenTaverns[_tokenId] = tavern;
emit Build(time, _tokenId, _longitude, _latitude, _popularity);
}
function _batchBuild(
uint256[] _tokenIds,
int[] _longitudes,
int[] _latitudes,
uint8[] _popularitys
) internal {
uint256 i = 0;
while (i < _tokenIds.length) {
_build(
_tokenIds[i],
_longitudes[i],
_latitudes[i],
_popularitys[i]
);
i += 1;
}
}
function _activenessUpgrade(uint256 _tokenId, uint256 _deltaActiveness) internal {
require(_isBuilt(_tokenId));
Tavern storage tavern = tokenTaverns[_tokenId];
uint256 oActiveness = tavern.activeness;
uint256 newActiveness = tavern.activeness.add(_deltaActiveness);
tavern.activeness = newActiveness;
tokenTaverns[_tokenId] = tavern;
emit ActivenessUpgrade(_tokenId, oActiveness, newActiveness);
}
function _batchActivenessUpgrade(uint256[] _tokenIds, uint256[] __deltaActiveness) internal {
uint256 i = 0;
while (i < _tokenIds.length) {
_activenessUpgrade(_tokenIds[i], __deltaActiveness[i]);
i += 1;
}
}
function _popularitySetting(uint256 _tokenId, uint8 _popularity) internal {
require(_isBuilt(_tokenId));
uint8 oPopularity = tokenTaverns[_tokenId].popularity;
tokenTaverns[_tokenId].popularity = _popularity;
emit PopularitySetting(_tokenId, oPopularity, _popularity);
}
function _batchPopularitySetting(uint256[] _tokenIds, uint8[] _popularitys) internal {
uint256 i = 0;
while (i < _tokenIds.length) {
_popularitySetting(_tokenIds[i], _popularitys[i]);
i += 1;
}
}
function _isLongitude (
int _param
) internal pure returns (bool){
return(
_param <= 180 * int(10 ** uint256(decimals))&&
_param >= -180 * int(10 ** uint256(decimals))
);
}
function _isLatitude (
int _param
) internal pure returns (bool){
return(
_param <= 90 * int(10 ** uint256(decimals))&&
_param >= -90 * int(10 ** uint256(decimals))
);
}
}