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how can i get a trigger volume activated only by looking at it

how can i get a trigger volume starts an event only by looking at the trigger volume or a specific object on it (camera player view it and nothing blocking its view ) i don't know how to do it even with line trace

Product Version: UE 4.19
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asked Oct 14 '18 at 06:30 PM in Blueprint Scripting

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avatar image ThompsonN13 Oct 14 '18 at 07:42 PM

its actually pretty simple if you wanted to use a line trace. you could just trace for objects and use a custom collision channel or you could trace the visible channel then use a cast to determine if its a trigger volume that you hit. below is a brief example of using a cast to determine if the hit actor is a trigger volume. there is probably a better way to go about it though rather than relying on tick.

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