[WIP] Fire nerf

[kevingranade]

The basic idea here is to add a small, non-hazardous fire to model the very first stages of lighting a fire.
These fields might even be relatively long-lived if the fuel being consumed isn't particularly volatile.

Things like molotovs and flamethrowers would still create full-size fire fields immediately, mut matches and lighters would now make these little flames, which would need to be nurtured into a full-sized fire.

I started on this a while back and got distracted from it, posting in case someone wants to follow up.

• Add growth stages for small fires, including promotion to full-size fires.
• Add effects for small fires? (just a teensy bit of hotfoot?)
• Switch firestarters over to making these fields instead of full-sized fires.
• Make fire spread using these instead of spawning full-sized fire fields.

Possibly related, possibly belongs in its own PR:

• Add a "hot air" field produced by fires and other heat sources, these would meander around much like smoke, but would be harmless except for elevating the temperature of the area. These would model simple building heating.

[Lain-]

Nice!

[narc0tiq]

Add effects for small fires? (just a teensy bit of hotfoot?)

Also, stepping onto a small fire should probably have a relatively high chance of putting it out.

[narc0tiq]

Looks like a line's missing here:

+            "fd_flame",

[kevingranade]

Gah, did a rebase just before pushing, thanks for catching that.

[jcd000]

yup nice.
i assume one will not be able to cook with the small fire field, correct?
if so, it fixes the exploit of putting a flammable material somewhere, lighting it, then immediately removing it and having enough fire to do some cooking (and with batch crafting, one can do lots of cooking with just one lighter charge)

also, yes to the "hot air" mechanic, either here or in another PR.
this mechanic can set the groundwork for more advanced base heating in the future.

[Shoes01]

Oh my god, that last point about having an invisible field be a source of heat is genius. I had something similar to that in my ice content PR with "ice fog", so I will look at that and see if I can't make that PR happen!

Also, this invisible field could also directly add to temperature (instead of increasing body heat) and reduce humidity in the room!

[Shoes01]

You can check off the last point, making this 1/5 complete!

[OzoneH3]

No progress for over a year, closing.