TopShot_12.cdc

// 初始化合約，
// 創造一個全新 collection 作為官方 reserve ，
// 然後也創造一個 Admin 來管裡所有 NBA Top Shot 卡片的狀態，
// 並發出合約已經初始化的 event
init() {
    // Initialize contract fields
    self.currentSeries = 0
    self.playDatas = {}
    self.setDatas = {}
    self.sets <- {}
    self.nextPlayID = 1
    self.nextSetID = 1
    self.totalSupply = 0
    // Put a new Collection in storage
    self.account.save<@Collection>(<- create Collection(), to: /storage/MomentCollection)
    // Create a public capability for the Collection
    self.account.link<&{MomentCollectionPublic}>(/public/MomentCollection, target: /storage/MomentCollection)
    // Put the Minter in storage
    self.account.save<@Admin>(<- create Admin(), to: /storage/TopShotAdmin)
    emit ContractInitialized()
}