Why don't make attacks and defenses replays downloadeble?
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Why don't make attacks and defenses replays downloadeble?
My educated guess, as a software developer, is that the replay is not a video. As long as the AI of the troops and defenses is 100% deterministic, a replay is simply a snapshot of the base with a list of the troop drop times and coordinates, then your local game engine recreates the "video" part of the replay. This is probably why replays are unavailable after an update - if any hit points or attack strengths are tweaked, the replay would result in a different outcome.
It's definitely technically possible for SC to create a feature that can generate and export a video file, but this would require a lot of developer effort/support/maintenance that is better spent elsewhere. Plus they'd surely have to upgrade their servers because the additional load for this feature would not be trivial.