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Fortunately, there is a neat crypto-trick which makes this schema usable for Server-oriented games in general - and multi-player games in particular

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if you’re using TCP to communicate, you should log everything right before it goes into your send() call (and right after it comes out of your recv() call

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I am happy to let everybody know that from now on, Vol.1 of my upcoming book “Development & Deployment of Multiplayer Online Games” is available via Leanpub

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With the Direct Processing, customer should trust us (the merchant) with their details

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On the other hand, most of PCI DSS requirements make perfect sense regardless of formal compliance

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Apparently, in practice there is big difference between cross-platform determinism and same-executable determinism, both in abilities they can provide, and from implementation complexity point of view

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Cross-platform determinism is the strictest definition of determinism I know; not surprisingly, there are quite a few factors which can break it