DAPP農(nóng)場(chǎng)養(yǎng)成種植/種樹(shù)游戲鏈游系統(tǒng)開(kāi)發(fā)（項(xiàng)目案例）丨區(qū)塊鏈DAPP農(nóng)場(chǎng)養(yǎng)成游戲源碼版
簡(jiǎn)單來(lái)說(shuō)，DAPP和普通的App原理一樣，除了他們是完全去中心化的，由類(lèi)似以太坊網(wǎng)絡(luò)本身自己的節(jié)點(diǎn)來(lái)運(yùn)作的DAPP，不依賴(lài)于任何中心化的服務(wù)器，DAPP是去中心化的，可以完全自動(dòng)地運(yùn)行。
DAPP是Decentralized Application的縮寫(xiě)，中文叫分布式應(yīng)用/去中心化應(yīng)用，通常來(lái)說(shuō)，不同的DAPP會(huì)采用不同的底層區(qū)塊鏈開(kāi)發(fā)平臺(tái)和共識(shí)機(jī)制，Alternatively,you can publish your own tokens(or use universal tokens based on the same blockchain platform).
function createAndInitializePoolIfNecessary(
address tokenA,
address tokenB,
uint24 fee,
uint160 sqrtPriceX96
)external payable returns(address pool){
pool=IUniswapV3Factory(factory).getPool(tokenA,tokenB,fee);
if(pool==address(0)){
pool=IUniswapV3Factory(factory).createPool(tokenA,tokenB,fee);
IUniswapV3Pool(pool).initialize(sqrtPriceX96);
}else{
(uint160 sqrtPriceX96Existing,,,,,,)=IUniswapV3Pool(pool).slot0();
if(sqrtPriceX96Existing==0){
IUniswapV3Pool(pool).initialize(sqrtPriceX96);
}
}
}
contract UniswapV3Factory is IUniswapV3Factory,UniswapV3PoolDeployer,NoDelegateCall{
...
mapping(address=>mapping(address=>mapping(uint24=>address)))public override getPool;
...
}
function deploy(
address factory,
address token0,
address token1,
uint24 fee,
int24 tickSpacing
)internal returns(address pool){
parameters=Parameters({factory:factory,token0:token0,token1:token1,fee:fee,tickSpacing:tickSpacing});
pool=address(new UniswapV3Pool{salt:keccak256(abi.encode(token0,token1,fee))}());
delete parameters;
}
