Questions tagged [visibility-determination]

Visibility Determination is the process of deciding whether there is a clear & unimpeded line of sight from one game entity or point in space to another.

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In UE4's Blueprints, how do I activate something when the player looks at it?

I want to make an object that activates when the player presses a button, then looks at it. How can I do this using Blueprints Visual Scripting?
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Is there a more useful “inverse” alternative to portal rendering than antiportal rendering?

I'm in the process of sketching out the design of a 3D rendering engine as I'm learning my way around the subject. (Preemptively: yes, I have my reasons for rolling one from scratch, not least the ...
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2.5D z-buffering doesn't work properly

I'm currently making a 2.5D FPS game in Java. And because I want to make more diverse maps I made taller walls but I have no idea how to change z-buffer code to handle walls with different heights. ...