"It's time you were making good, sonny," he went on, with an ugly look on his reddened face. "You're not playing up to me square. You've been the prodigal son for four weeks now, and you could have had veal for every meal on a gold dish if you'd wanted it. Now, Mr. Kid, do you think it's right to leave me out so long on a husk diet? What's the trouble? Don't you get your filial eyes on anything that looks like cash in the Casa Blanca? Don't tell me you don't. Everybody knows where old Urique keeps his stuff. It's U.S. currency, too; he don't accept anything else. What's doing? Don't say 'nothing' this time."

上面出现了and you could have had veal for every meal on a gold dish if you'd wanted it. 

你每顿饭都可以随心所欲地用金制的餐具来享用小牛肉。

这句是虚拟语气吗？为什么要用虚拟语气呢？ 

这里的时态是什么意思：if you'd wanted it = if you had wanted it ?