Jörg Neumann once worked for Digital Anvil (founded by Chris Roberts (Star Citizen);
they had to solve the issue of dark sides of buildings;
around 300 landmarks are handmade, the rest is made by using algorithms;
they build 1.5 billion houses in the cloud every day;
every airplane that is currently on the move can also be found in the simulator. You can fly and watch the other airplane fly over the clouds;
engine is from Asobo and is using Double-precision floating-point;
they had ATC from day one working in MSFS (taken from FSX);
they used code from FSX at the start but then rewrote everything (starting in 2016);
the world is divided into squares with a side length of 64 meters each, up to a height of 65,000 feet. For each of these cubes there are values for humidity, air pressure, which particles float around and other sensor data. This also means that the air is moving in the right wind direction and strength;
the clouds are made out of voxels and are rendered with raymarching - a kind of raytracing. In addition, the clouds are generated dynamically. When it rains and gets warmer, it generates lift;
CPU is used for instruments and autopilot. Everything else is done by the GPU, this offers a lot of computing power because it can use multi threading;
Is there a casual mode? Neumann: No, not at all. We don't want to do this as a game. Our target group are people for whom flying is a hobby. They know a lot about it;
How important are mods? Neumann: [...] I see the Flight Simulator as a platform, not as a game or simulation;
Around 200 people are working on this sim, 120 from Asobo and 20 to 30 people at MS (they help with machine learning). There are also a few smaller teams, including in Austria;
How far has development progressed? Neumann: We're in Pre Tech Alpha. The simulation is there, you can do anything. But not all planes are ready yet. For the 47,000 airports, we would like to go through the data and correct them if necessary. We are still working on accessibility. There is always something to do. We simulate the world, you can go into endless detail.
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