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Training Stream - Tracing (Ray Casting) - Dec 20th - Live From Epic HQ

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    [LIVESTREAM] Training Stream - Tracing (Ray Casting) - Dec 20th - Live From Epic HQ


    WHAT

    Ian and Alexander will be covering a number of ways available in Unreal Engine 4 to trace/ray cast. Tracing is an integral part of gaining information about the level, state of Actors, or even gaining a reference to an Actor at a location. Beyond this, shaped traces and traces that return everything they hit can be leveraged to determine anything from the number of walls around an object to a target location to if a character can fit through a gap.

    WHEN
    Tuesday, December 20th @ 2:00PM ET [Countdown]

    WHERE
    http://www.twitch.tv/unrealengine

    WHO
    Alexander Paschall - Community Manager - @UnrealAlexander
    Ian Shadden - Senior Technical Writer - @Shaddenfreude

    Archive:

    Last edited by Alexander Paschall; 01-03-2017, 02:29 PM.
    Twitch /unrealalexander| Twitter @UnrealAlexander
    How to report a bug? | Installation & Setup issues?
    Call me to a thread by posting this: [MENTION]Alexander Paschall[/MENTION]

    #2
    - Ian feeling better already? we hope! or we just hoping he'll be ok by the 20th?
    - OR was he abducted by aliens & they promised his return by the 20th?
    - We may never know!

    But the streams 'Must' go On!

    * [MENTION=8]Alexander Paschall[/MENTION] will there be a stream the 22nd or is that too close to the holidays? or will there be a special stream with everyone wearing Reindeer Antlers n Santa Hats ?


    ** great to see this stream is going to happen btw, great subject that needs to be covered. always learning something from these streams. thx **
    Last edited by ayretek; 12-16-2016, 11:41 PM.

    Comment


      #3
      Thanks for offering this.... If time allows can you please cover:

      #1. Limitations of fast-moving spaceships tracking high-speed objects ahead. Special 'CCD' tracing needed?

      #2. Multiplayer considerations: Tracing differences in single-player versus multiplayer: Origin-Rebasing etc.

      #3. Tracing based on where the Player Camera is actually looking (equivalent of LOS Triggers in UDK etc).

      Comment


        #4
        Please could you go over the best practices of use, especially when it comes to which shape may best suit a specific task (e.g. why use a cylinder when a box would work). This may be specific to what you're trying to achieve but a rough guide would be nice.

        Also how expensive each trace is, since I've seen people claim on other forums/sites that now we have faster CPUs (than say back in UT '99's day) trace expense doesn't matter and to just go nuts with them, which I've never been 100% convinced about (from memory they were putting them all on Tick too).

        Comment


          #5
          [Question] How to manage materials/physical materials with raycast?
          Join the Unreal Engine community on Reddit! | Twitter: @ZioYuri78

          Comment


            #6
            Great. This came at the right moment as I am currently making the design docs for a game that will heavely make use of raytraces. Will the training stream be focused on Blueprints ?

            Comment


              #7
              This stream will be OP.

              Comment


                #8
                Bringing this over from the last forum post:

                Can you go over expense of each trace and how to find them in the profiler, as well as best practices of use. If there should be a hard limit to their use and if so, what other options are there available to us.


                Comment


                  #9
                  Ah, I didn't find Ian's Unreal Christmas Beanie in the Epic Store.

                  Comment


                    #10
                    Its a shame my questions from the previous thread about this event where not handled in the stream

                    Next time please be more clear as to what date a stream is moving too, i stalked the forums for a week when that stream was cancelled to find out when the new one would be, and then yesterday randomly ran into the vid on youtube..

                    Comment

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