Real O2 - Oxygen Reserves

Design Principles

Minimalism

All effects are applied independently, and no vanilla records are touched except notifications.

Additionally, there are no external requirements for basic functionality.

As far as design philosophy, the systems are designed to feel like they were always there, as much as possible.

Realism

This part is simple: You have a set amount of O2 in your pack.

If you run out, you will eventually suffocate and die.

O2 Reserves

Your Pack now holds a set amount of O2, varying per category.

Categories are as follows:

• Survival - Holds just enough O2 to avoid instant death in vacuum.

• Balanced - Suitable for short on-foot traversal, or vehicular exploration.

• Standard - Suitable for combat encounters or light exploration.

• Exploration - Holds tremendous O2 for extended planetary expeditions.

Travel Restrictions

When you are drawing on Reserves, Fast Travel is no longer available in Simulation mode.

Switching to Streamlined mode or disabling the mod will revert Fast Travel characteristics to vanilla.

Constant Drain

When you are in a location without breathable air, you will use O2 at a set rate.

This rate is influenced by your Aerobic Fitness.

Exertion Drain

Running and sprinting will cause varying amounts of O2 usage.

Adverse Condition Drain

Extreme weather or adrenaline from combat will cause varying amounts of additional O2 usage.

Boost Uses O2

When this is enabled, Boost Jumping when in zero-atmosphere uses O2 instead of 'boost fuel'.

This varies depending on the Boost Type where Power packs use the most and Skip packs use the least, as expected.

Taking Boost Pack Training reduces this amount.

Punctures

In Simulation mode, taking gunfire or being bitten can cause a Puncture - instantly draining a certain amount of O2.

This is mostly combated by installing Hypercure Sealant or, if Suit Up is present, using an Assault suit.

Aerobics

Aerobics is a new meta-skill derived from vanilla perks like Boxing, Fitness, Gymnastics, Wellness, Sniper Certification, and the Spaced trait.

All drains will scale down to ~70% of their original as your Aerobics meta-skill increases.

CO2 Buildup

When you are drawing on your Reserves, CO2 will slowly build up over time.