I'm a total beginner, so I barely know what I'm doing, but here goes: I'm using this First Person Starter template and I would like to add a "springy legs" feature on character landing. The higher is the jump, the stronger the springy effect is on landing (but there should probably be a maximum cap value specified).
How can this be achieved?
EDIT: Here's a demonstration of what more or less what I'd like it to feel like: https://youtu.be/dSsV657JYRU