more physics REAL-TIME LAUNCH. Fast forward: shift + click flag (turbo mode)
made it so that 1. stages exist (not animated and no decoupling thrust added), 2. mass depends on fuel usage, 3. thrust depends on fuel, 4. horizontal speed for orbiting (no coriolis or rendering included, aside from rocket direction), 5. engine sounds are overlayed to avoid repetition along with sound (and drag) depending on altitude continuously (scale height is that of earth), 6. drag is more realistic, and 7. the different parts of the launch are controlled mathematically so that things are more exact
