Fire
Making Fire
To create a fire go into the survival menu and select build a fire. A fire must be built on a wood source such as branches or twigs. (You do not need to actually see the wood heap to start a fire, which can help in dark Winter nights with zero visibility.)
If your skill is very low, the Origin of Fire might help you.
Minimum Fuel Required
The fewest branches/twigs you can use to build a fire is 13.
Heat, and length
The time a fire take to burn seems to only depend on the quantity of wood used. In a fireplace, it seems to follow the following equation :
Y = 8x + 10 This basically means that if you have 'x' blocks of firewood, it will take 'y' minutes to burn.
For example,
- 40 blocks of firewood takes 5 hours and 30 minutes game time to burn off.
- A Raw tree trunk can burn for over a day
Also, the more wood you burn at once, the more heat it will produce. So, if you which to produce a lot of heat for a long time, you'd better make a large fire from the beginning, rather than progressively adding wood.
The origin of the burned wood (spruce, willow,...) does not change the fire length nor the heat produced.
The Spread of Fire
It is possible for fire to spread, both to standing trees and to other piles of wood. This especially useful when preparing the ground for agriculture.
If uncontained in a fireplace, fire can also spread to your house, so be careful.
