The oxygen condenser is a simple model that establishes the amount of oxygen the astronaut carries in his space suit, refuge or car. These capacitors have colors that establish the state of functionality found: Red, yellow and green.
In the game you have the possibility to model three different objects for each color, but the most feasible thing is that by means of code these colors change in a single model.
The models have surfaces, in our case the oxygen condenser model has four materials that are applied to their respective surfaces. In this case only by code we recover the desired surface with a brush and establish its new color according to the need. And that's when we have an oxygen condenser with three possible states.