I changed the mouse handling from a simple plane_x = mouse_x * 2 to a constant increment/decrement based on the mouse's direction.
This will prevent people from rushing through levels.
Commit: https://github.com/colinleroy/a2tools/commit/853eff3ce93ee5f02dd9008846fc6959d0732b13#diff-5918498f1bc8f1bf9a56d8a10d46b6e6bd46abdd283b7771856ed3ce929d5278
Before/After video:
