FlossDec 12
Nikita Lisitsa

Testing weather simulation & biome distribution on the default map. Too much water vapour on the south, too big a desert in the center of the main island (on the left), but imo overall it looks pretty interesting already!

#indiedev #gamedev #indiegames

Dec 12 at 2:58pmWeb
Show threadtoerrorDec 12
@lisyarus Are you modelling the dew point as a factor of altitude and saturation?
Show threadNikita LisitsaDec 12
@toerror Nope, just local temperature
Show threadtoerrorDec 12
@lisyarus If you wanted to get clouds inland then IRL, that's why you get that happening.
Also, day / night heating up the land and causing air to rise and form clouds.
Show threadDoug BinksDec 12
@toerror @lisyarus If you've only got temperate use an adiabatic lapse rate with altitude to get your rough dew point cloud height.
Show threadDoug BinksDec 12
@toerror @lisyarus This rate does vary with humidity content (which is how we get the Foehn wind etc.), but you may not need to model that. It's a few decades since I last did any serious atmospheric physics.
Show threadtoerrorDec 12
@dougbinks @lisyarus I have implemented lapse rate in my own atmospheric model, and a simple set of greenhouse approximations... I can still only get to within +-10 degrees C at locations on earth, but it's not a bad approximation I guess...
I'm told that IRL it's not quite the dew point you're interested in because that would actually be way too cold - you get dew formation on dust particles at a much higher temperature, so somthing to finger in the air tweak in a game IMO.
Show threadtoerrorDec 12
@dougbinks @lisyarus In fact, I hear that one of the reasons Manchester gets so much rain is because of pollen coming off the heather on the moors seeding cloud formation. ( Also might be why clouds fail to form over deserts? Not 100% on that one - think I heard that somewhere. )
Show threadDoug BinksDec 12
@toerror @lisyarus Cloud formation was certainly one of the difficult problems they used to discuss back when I worked in atmospheric physics, but since I was primarily studying Mars before I switched to fluid pattern formation work I didn't get to work on any of that
Show threadthomastc | frozenfractalDec 12
@lisyarus Is evaporation only happening over water? Irl, land (mainly plants) also evaporate water, causing forest to beget more forest by transporting moisture inland. Since you're also updating biomes in tandem, it should be easy to add, and might help get those deserts under control.
Show threadNikita LisitsaDec 12
@thomastc Hmmm... The thing is that right now "biomes" are a temporary concept, in the end I want just temperature & precipitation maps, and then the map will be filled based on some entity data