Adds a new evolved child zombie

[DoctorBoomstick]

Summary

Content "Adds the swollen wretch as a new possible child zombie upgrade, plus fungus variant."

Purpose of change

This started life as a short joke concept on the discord chat, before I thought it’d be a genuinely possibly cool idea to add a new flying boomer-like zombie to the game, and subsequently took it upon myself to add this monster as an upgrade.

Describe the solution

I’ve added a zombie child upgrade called the swollen wretch, which is something of an amalgamation between a boomer zombie, a pupating zombie, and a regular child zombie. More than anything it’s a floating flesh raptor incubator, which traps decomposition caused gasses within itself, causes a chemical chain reaction where in the gas is burned within it and allows it to obtain a measure.of buoyancy, thus giving it a reason for why it can fly. It’s speed and health are very low, with the main threats being the large amount of flesh raptors it harbours within itself. In addition, I’ve also added it’s fungal form and the fungal flesh raptors that it spawns. I’ve included the regular zombie form of the wretch into the zombie upgrades file, under the child zombie grouping.

Describe alternatives you've considered

Letting a joke remain as a joke and not deciding to Frankenstein up this creature.

Testing

Spawned in a bunch of iterations of the creature, checked to see that all their properties function correctly, spawned in a few zombie children and a zombie master to observe if they would mutate into the wretch, and ran the same style of tests on the fungal form.

Additional context

No response

[sonphantrung]

If there's something like Hulklings, Shocklings, that'd be more !!FUN!! :)

[DoctorBoomstick]

I mean, my good sir. There isn’t anything which says that we can’t slowly build up a well-stocked kindergarten’s assembly of mutated kids. I’m just going to let some time pass for this PR and my other ones to hopefully get merged, but I’ll keep that idea in the back pocket.

[I-am-Erk]

Seems good but I have no idea why this would spawn more raptors than a pupating zombie, it's a smaller source and apparently also able to float.

[DoctorBoomstick]

That’s fair. The original thought process was to make them spawn more raptors cause, number one, they’re around 120000 ml in volume, which is quite a chunky amount, and number two, to make them a bit more threatening cause as it stands, their only real source of danger stems from the raptors within them. Though on that note, I suppose it might be a bit too over the top, nothing which can’t be fixed by a quick commit.