Spam protection caused a duplicate of this post. Closing this one. https://gamedev.net/forums/topic/714968-calculating-the-far-distance-plan-based-on-pitch-and-yaw-for-a-map-renderer/

Outlines could do the job, but then again - it looks less immersive and if you need invisibility you need to not-draw the outline when in some location (or standing still for too long).

It's still an advantage to hide behind something though.

Does the player have ranged attacks?  Because if so, assigning the same mouse button to “move” and “attack” seems like a horrible idea.  When the player inevitably clicks next to an opponent instead of on an opponent in order to attack, the player character will commit suicide by running …