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ROADMAP: Large New Development Projects
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- Split this doc into "core gameplay" and "side quest" forks?

- Lux Ore
	- Reconsider mapgen depth; push downwards?
	- Players accumulate radiation.
		- Player health API to allow registering multiple reasons
		  for player health loss (injury, radiation)
		- Radiation fades, washes off faster with water.
		- Stacks also radioactive.  Tools too but less so.
	- Infuse other materials
		- Infuse clear glass to make "smoked" glass.
			- Does not transmit light.
			- See-thru only from one side.
		- Infuse chromatic glass to make piezo glass.
			- Step on it or punch it to emit light.
			- Button/touchplate for optics.

- Trees/logs.
	- Tree trunks as falling nodes, dig as logs.
	- Logs as non-falling nodes, facedir.

- Sand renewability.
	- Dirt turns to sand if left near water.
		- Stronger near more water.
		- Stronger near flowing water.

- Torches
	- Burning nodes with ash parts, to display torch lifetime
	- Create a "strike-anywhere match" by adding other
	  materials (sand, and something to react with like
	  gravel or lux infusion) to instantly light on
	  punching a solid enough surface.

- Advanced Tools
	- Sickle / kopesh, choppy + snappy, recursive harvesting.
	- Mop/broom for mass stack pickup.
		- Sponge on a staff for a mop, thatch on a staff for broom.
		- Broom recipe feels more right, but requires more work...

- Tinted glass: can see thru only one way and not others, does not
  transmit light?  Infuse non-chromatic glass w/ lux?

- Player knockback coming in 5.1+?
	- Allow players to push others around by punching?
	- Use for door conveyors?

- Doors
	- Automation via laser ablation propulsion.
		- Some materials cannot be operated by hand?
		- Stirling engine using light gradient?
		- Water or steam for rotary power?
		- Arrangements to auto-return if propulsion removed?
	- Push fluids, falling_nodes, items, ents as appropriate?
		- Also move items sitting atop?
	- Use as press for quick packing recipes?

- Domain Wall Sensor
	- Adapt from sztest?
	- Field Generator?
		- Power an annealed lode block from 2 opposite faces.
		- Generates particle effect at mapblock boundary.

- Thatch
	- Collect grass and dry in sun, or pummel sticks into wood fiber.
	- Nodes that reduce fall damage, decorative for building.
	- Brushes for painting, writing system.
	- Broom to sweep scattered item stacks together.

- Water and lava surface springs.
	- Access to water for forges.
	- Access to lava for lighting, firestarting, glass?

- Lava quenching, new material?

- Lurk Ore
	- Moves freely among air-exposed stone while no player is looking.
	- Follows after player, attempting to cause harm.
		- Weakens nodes above/below player into falling nodes,
		  e.g. loose cobble, gravel?
		- Steals items from player, drops onto ground or absorbs them
		  into body?  Saps tool durability?
		- Ignites flammables it passes by?
		- Downgrades or absorbs ores nearby by contact or air floodfill?
		- Creates illusionary nodes you can fall through?
	- Cannot be dug or damaged directly.
		- Digging it yields plain stone, but converts up to 2
		  surrounding stone nodes into Lurk.
	- Need to dig all around it so it cannot move, then apply Some
	  time-integrated process to convert it to useful form.

- Threats
	- Visceral
		- Flammable/toxic gas?
		- Monsters: stone-lurkers, mimics.
		- Lightning, meteor strikes?
	- Creeping
		- Cellular automata hazards.
		- From exploration, delving too deep, leaving things to rot, etc.
		- Blights, Fungi

- Social features
	- Randomize player appearance/colors.
		- Shirt/pants, possibly w/ stripes/patterns
		- Skin color, hair color, eye color?
	- Add more holiday outfits.
	- Track server lag in metadata?

- New writing system based on charcoal
	- Draw a symbol on surfaces by pummeling w/ charcoal
	- ...or maybe make ink from coal+water, use a brush?
	- Punch symbol w/ charcoal to rotate thru alphabet
	- Use a special/reduced alphabet?

- Smoked glass
	- Lux-infuse clear glass.
	- Does not transmit light.
	- See thru only in one direction.
	- Useful for hidden bases.

- Digital logic + lighting via optics.
	- Piezo Crystal Node
		- Emits light briefly when punched or stepped on
		- Need to interpolate player paths for "stepped on" logic
		- Lux-infused chromatic glass?
	- Pistons or rack&pinions for affecting world stuff.
		- Laser ablation propulsion
		- Gray code absolute game time to determine distance (logarithmic by load)
	- Advanced optics?
		- Polarization? Phase? Interference and superposition?

- Rotary power?
	- Stirling engine?
	- Rotors?
	- Conveyors?
	- Steam as a classic fluid?

- New materials to craft with.
	- Dungeon materials, stonework?
	- Decorations for dungeons
	- Tree sap from stumps? Resin? Rubber? Shellac?
	- Small plants? Reeds? Mallows?
	- Sea stars, anenome, coral, other underwater things?
	- Fungi, esp. tree-destroying ones, blight?
	- Oil, natural gas?  Fossils and fossil fuels?
	- Geode, hydra crystals, radioactives?
	- Shipwrecks or alien tech
	- Slow-moving animals? Snails? Miniature spice worms?
	- Non-portable things, like "spawners" or wormholes
	- Tubers and taproots, cacti, and other "defensive" plantlife
	- Plant-like CA animals, like bee nests and clouds of bees?
	  Termine mounds? Ant colonies? Coral?
	- Popeggcorn?
	- Ores that smelt via heating and then rapid quenching?

- System for transporting cargo.
	- Trains of minecarts?
	- Conveyors, elevators?

- Vary player walking speed based on nodes under feet?

- Use gravity vector to make flowing water push the player?

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