Environment
Template:UC Environment consists of several aspects throughout the map that are largely intangible but can have a great impact on human inhabitants, wild animals, and plant life. Many of these aspects are ruled by the map's biome.
Weather
There are 5 main types of weather in RimWorld
Clear
- Time of year: Any
- Wind: None - Moderate
Rain
- Time of year: Any
- Wind: Calm - Moderate
Rain intensity can vary. Rain will put out any outdoor fires on the map
Rain will turn into snow if the temperature falls below +2 degrees Celsius
Fog
- Time of year: Any
- Wind: None - Calm
Fog can be normal and dense.
Thunderstorm
- Time of year: Any
- Wind: Moderate - Extreme
Thunderstorms can be either 'Dry' or 'Rainy'
Lightning strikes from thunderstorms can ignite flammable objects (including flora). Not a real risk during a rainy thunderstorm however
Snow
- Time of year: Mainly winter
- Wind: None - Moderate
Snow, in most Biomes, mainly falls in winter where the temperature falls below freezing. It is possible for snow to occur anywhere up to +2 degrees Celsius
Snow can also occur in a 'cold snap' if the temperature falls below +2 degrees Celsius
Terrain
Terrain consists of the map's walking surface, terrain features, and mountain areas. Terrain affects things including walking speed, where plants can grow, and may prohibit construction.
Natural surface terrain includes soil, rich soil, marshy soil, marsh, mud, sand, lichen-covered dirt, gravel, rough stone (granite, marble, etc.) rough-hewn stone, shallow water, and deep water.
Terrain features include steam geysers and mountains. The steam from a geyser produces heat and an enclosed area around it will heat up unless unroofed. A mountain cannot be destroyed, even if all of it's stone and ore has been mined out. What remains are terrain tiles listed as 'overhead mountain'.
Openness
Openness refers to the often critical aspect of structures being open to the outside. It affects many things such as temperature, item deterioration, light, exposure to weather, and certain events.
Every tile on the map falls into one of three categories:
- Outdoors - not enclosed by any structure, even if there is a roof.
- Indoors - completely enclosed structure, completely roofed.
- Unroofed - completely enclosed structure, but with one or more unroofed tiles.
Temperature
Environmental temperature is affected outdoors mainly by the map's biome and by the current season. Temperature affects a plant's ability to grow. Temperature affects a human's comfort, and health in extreme temperatures.
Flooring
Flooring replaces the natural terrain. It has an effect on beauty and walking speed.
Beauty
Terrain, flooring, objects, and plants attribute to a tile's beauty which in turn can affect a colonist's mood. The contents of a tile have a cumulative effect on its beauty, i.e. a granite chunk (beauty of -10) on a wood floor (beauty of +2) gives the tile a net beauty of -8. Certain unsightly objects, i.e. vomit, have one value when under a roof and a lower value when unroofed. This simulates the general disgust of seeing eyesores indoors versus encountering them outside.
Clearance
As a colonist moves around the environment they observe the objects and free space around them to measure their clearance.
Flora
Certain plants and trees have beauty and may provide cover.
Light
Affects a plants ability to grow. Darkness provides cover. Affects colonist's mood if in a dark environment during the day.