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    Unreal Engine 4 - GT.TV Exclusive Development Walkthrough

    GameTrailers

    1 HN recommender · recommended in 3 months, 2015–2016

    YouTube

    10:30 · 972K views · Jun 8, 2012

    A GameTrailers walkthrough from E3 2012 of an Unreal Engine 4 real-time tech demo with Epic's Alan Willard. It shows live code changes and hot reloading while the game runs.

    HN cites it as a favorite demo of live coding and hot reload in a game engine.

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    3 comments from Hacker News

    1. @archivatorMar 2015· in “Unreal Engine 4 is now available to everyone for free”

      This is my favorite Unreal 4 demo - this video (sadly missing the wonderful quote "I light my level by dropping a sun in.") I'm completely in awe of the feedback loop here. It even compiles and swaps code while you're in the game!

      Strongly recommendsView on HN
    2. @amadeuswAug 2015· in “Working Toward Bret Victor's “Learnable Programming””

      A few years ago (2012) I was taken aback by the Unreal Engine development process. Their IDE features a running game with all elements being selectable and interactively editable. In one video fragment [1] they hop to Visual Studio where they change gravity. After a few seconds of compilation, the game's code is updated. [1] this video

      CitesView on HN
    3. @binthereDec 2016· in “Choosing Functional Programming for Our Game”

      I believe that on Unreal Engine 4, you use C++ and it does have a feature that mimics "live coding" where it recompiles and hot-reload your game even while playing. edit: here it is this video (jump to 9:40 if it doesn't load at this point automatically)

      CitesView on HN