Invisibility, Sanctuary, Darkness, True Seeing Issues

[Finaldeath]

Some issues with these effects in the game.

• True seeing can't penetrate Sanctuary/Etherealness (Greater Sanctuary) properly, in fact it's worse then not having it since the person becomes untargetable directly for some reason (compared to making the save meaning you can see them fully I think)
• There are a chunk of issues around going into an area of Darkness with the various visions, or possibly when one is removed inside it (or added in it) where you end up blind when you shouldn't
• https://github.com/Beamdog/nwn-issues/issues/192 can be tagged onto this.
• Also https://github.com/Beamdog/nwn-issues/issues/493
• Pretty sure Invisibility has some issues
• Don't get me started on Hide in Plain Sight. Although 36 now can add a timer for it at least.

Self-note: There's also a gap of functionality between True Seeing and the others - if a EffectSeeStealth()/EffectSeeSanctuary() for instance was added, but is there any other combos not covered by the current effects? Those two should be enough to make adjustments to "Overpowered Trueseeing" in many cases to be "closer to PnP" for instance.

[Shad000w]

True Seeing is not supposed to see GS. Not sure about "S" though, but GS puts you into "ethereal realm" so TS should not be able to see anyone under that effect. In NWN it sometimes works and sometimes doesn't afaik.

[Finaldeath]

Given for Greater Sanctuary "Prior to version 1.64, ethereal creatures were not visible to those with true sight" the remaining issues are just bugs (ie you can see them, just can't interact, but sometimes can...also Sanctuary is even weirder since it makes having True Seeing outright worse than just passing the saving throw).

I'll look into some additional effects to have combinations for those who want to separate different visions, main one that is missing is a separate vs. Sanctuary/Greater Sabctuary and a vs. Stealth one. So you could mix and match as needed.