Improve chances of obtaining missing artefacts, similar to how spells work

[TheHudsonhawk]

Minecraft version: 1.12.2 Wizardry version: 4.2.11 Environment: Singleplayer Issue details: After doing some testing on a single player world and using the mod rfdimensions I discovered that only after going through over 1000 shrines I still couldn't get all the artifacts. This to me proves that the rarity of naturally spawning shrines combined with the rarity of gaining an undiscovered artifact makes the mod too difficult to reach the achievement of obtaining all the artifacts. My fix is relatively simple, "When a player discovers that artifact it removes or (increases the chances of the others) it from the list of artifacts you could obtain" this could be a setting in the config. Making the mod more fun for players to not have to grind just to find 1000 shrines.

If this is in the wrong category my apologies, I believe this to be an unintentional feature of the game and should be resolved.

[Electroblob77]

There is actually a mechanic like this for spells, so adding it for artefacts is possible. However, because each artefact is a separate entry in the loot tables, it's not quite as easy as that. I will have to think about how to do it without removing the flexibility of loot tables.

This got me thinking about how many shrines you would expect to have to visit and it turns out that for the 63 artefacts in wizardry, you need to visit an average of around 300 shrines to find them all. Still a lot, but certainly not over 1000, so in other words, you were very unlucky. More details of the maths here if you're interested: https://en.wikipedia.org/wiki/Coupon_collector%27s_problem