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

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  • replied
    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..

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

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  • replied
    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.

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  • replied
    This stream will be OP.

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  • replied
    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 ?

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  • replied
    [Question] How to manage materials/physical materials with raycast?

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  • replied
    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).

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  • replied
    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).

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  • replied
    - 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.

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  • 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.
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