[Docwho]

Atmospheres from what I have seen in the date file this should make them work. (HAVE NOT HAD TIME TO TEST)

Bmp_AtmosphereTypes.bmp, AtmosphereTypes.txt, StellarObjectTypes.txt, and SystemTypes.txt

AtmosphereTypes.txt is where you need to start it looks like.

Name := None (Type)
Description :=
Picture Index := 1 (So your empire can start with it by clicking on the pic)
Allowed On Planet Physical Types := Rock, Ice (What they of planets this atmosphere is found on.)

Then to the Stellarobjecttypes.txt to add it into the game.

Stellar Object Name := Planet Gas Ringed 0001 Giant
Physical Type := Planet
XFile Class Name := Planet Ringed 0001 Huge
Maximum Model Size := 24.0126
Hex Size := 1
Picture Index := 356
Portrait Filename := planet_gas_ringed_0001_huge.bmp
Large Portrait Filename := planet_gas_ringed_0001_huge_lp.jpg
Description :=
Planet Size := Giant
Planet Physical Type := Gas Giant
Planet Atmosphere := Carbon Dioxide (Change this to the new type of Atmo you want)
Planet Gravity := Formula Planet Gravity
Planet Temperature := Formula Planet Temperature
Planet Radiation := Formula Planet Radiation
Planet Surface Empty := PlanetSurface_Gas_Carbon_Empty.bmp
Planet Surface Colonized := PlanetSurface_Gas_Carbon_Colonized.bmp

then to the systemtypes.txt.

Chance Type 1 Number of Any Planet Atmospheres := 5 (Chang to 6 if you are adding new 1 new one atmo higher if you are adding more)
Chance Type 1 Any Atmos 1 Type := None (Type)
Chance Type 1 Any Atmos 1 Chance := 20 (% of coming up)
Chance Type 1 Any Atmos 2 Type := Methane (Type)
Chance Type 1 Any Atmos 2 Chance := 20 (% of coming up)
Chance Type 1 Any Atmos 3 Type := Oxygen (Type)
Chance Type 1 Any Atmos 3 Chance := 20 (% of coming up)
Chance Type 1 Any Atmos 4 Type := Hydrogen (Type)
Chance Type 1 Any Atmos 4 Chance := 20 (% of coming up)
Chance Type 1 Any Atmos 5 Type := Carbon Dioxide (Type)
Chance Type 1 Any Atmos 5 Chance := 20 (% of coming up)

Now you should have been able to make a new Atmo in the game.

Thanks I hope this helps all of you out. I am still working on my mod but will be posting it soon I hope.