[MoM] Update creature mindsight to be variable, apply to Eater

[Standing-Storm]

Summary

Mods "[MoM] Update creature mindsight to be variable, apply to Eater"

Purpose of change

Hardcoding creature mindsight as 2/3rds of daytime vision range isn't very flexible. It'd be nice to have ways for mindsight to be greater than normal vision range, for some kind telepathic predator that specifically looks for sentient prey.

Like, say, an Eater.

Plus this should let me do enough to #73628 to get it merged.

Describe the solution

Change the MIND_SEEING flag so the base range is 5 squares. Add a series of hardcoded effects that increase the range by 5, 10, 20, and 30. These effects all stack, so with a combination it should be possible to get any necessary mindsight range out to the limit of the reality bubble.

Set the Eater's normal vision range to 3, but give it 35 mindsight (5 + 30 effect). The eaters are:

Spoiler

The feeding organs of an extradimensional predator taking advantage of the Cataclysm to look for prey, and I like the idea that it's much easier for them to hone in on minds than it is to spot life in general.

Give the hidebehind mindsight of 25 (base 5 + effect 20).

Describe alternatives you've considered

Testing

Eater and hidebehind both affect the appropriate effect as soon as they can. Doing so allows them to see you through mindsight. If you turn on Telepathic Shield or use the Telepathic Dampener, you are invisible to them.

Bug #77436 means you can see them turning on them mindsight, but it cannot be helped.

This does mean Eaters can attack you through walls, which might need further balancing (maybe a range reduction, or just requiring no obstacles in between).

Additional context

I left comments in the monster files listing the range of their mindsight, so it's obvious.

I'd love to let Eaters phase through walls, but that's currently beyond my abilities.

[github-actions]

Spell checker encountered unrecognized words in the in-game text added in this pull request. See below for details.

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• Add the effect to give the eater mindsight.
• Add the effect to give the hidebehind mindsight.

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