Penned In

## Penned In 1.2.1

### New pens for wild animals
12 new designs, picked automatically from the mob's name or where it lives:

- **Aquarium Tank:** whales, dolphins, sharks, fish and axolotls swim behind glass, bobbing at the surface. Ocean and river mobs now get this instead of the Beach Pen. Crabs keep the Beach Pen.
- **Penguin Pool:** adults stand on a snowy ledge and the young paddle in the water.
- **Rocky Haul-out:** seals, sea lions and otters bask on a rock above a tide pool.
- **Ice Shelf:** walruses and ice seals haul out on a snowy shelf above open water.
- **Bird Cage:** parrots, toucans and other birds sit side by side on the perch and hop along it. They're sized by their whole model, so long beaks and tails stay inside the bars. The Hopper Pen version sits on a round base.
- **Dog Kennel** for wolves and dogs, and **Cat House** for cats.
- **Savanna Enclosure:** lions, elephants, giraffes, tigers, kangaroos and more.
- **Electric Paddock** and **Research Paddock** for dinosaurs, **Cliff Roost** for pterosaurs (they perch and glide round) and **Long-Neck Paddock** for sauropods.

The Long-Neck Paddock has a tall tree the mob stretches up to when there's open space above the pen. With a block on top, it switches to a short tree and the mob grazes instead (server config `tallPens`).

The design arrows only offer pens made for one kind of animal to that animal: no foxes in the Penguin Pool, no horses in the dinosaur paddocks.

### Axolotls
- Axolotls can now go in pens. They live in the Aquarium Tank and breed on buckets of tropical fish: one bucket per pair, with the water bucket coming back out of the output.
- A pen can breed away in search of the rare blue axolotl. The miniature shows a blue one whenever the pen has one, and the info panel lists their colours.

### Only animals that breed on food
- Pens are for breeding, so they now only take mobs that breed on food. Mobs that can't breed (parrots) or that breed their own way (e.g. Fossils and Archaeology dinosaurs, which use eggs) are turned away with a message saying why.
- Any of these already in a pen stay there.

### New server config options
- `blockedMobs` now takes a whole mod (`"alexsmobs:*"`) as well as single mob ids, and covers the farm animals too.
- `allowedMods`: if set, pens only take mobs from the listed mods. Vanilla animals always pass this check.
- `maxMobSize`: turns away anything bigger than a given mob (`"minecraft:cow"`) or a size in blocks (`"1.5"`), measured by hitbox.
- Players are told why a mob was turned away. Animals already in pens stay.

### Other changes
- Fluid pipes now connect to every side of a Hopper Pen (only Milk and XP sides give liquid), and changing a side updates neighbouring pipes straight away.
- Big mobs and their babies are spaced further apart, so the baby isn't squeezed against the fence.
- Guide: a new Milk & XP page, and the Catching page now says plainly that mobs you're leading go in when you right-click a placed pen.