Reset player fall-distance on select teleports.

[sepulzera]

Sets the player fall-distance to zero before performing a player teleport during "move player" steps. This should cancel out any already calculated, added fall-distance that might result in unintentional fall damage.

Fixes #698

Summary

• This is a…
  • [X] Bug fix
  • [ ] Feature addition
  • [ ] Documentation
  • [ ] Refactoring
  • [ ] Minor / simple change (like a typo)
  • [ ] Other
• Describe this change in 1-2 sentences:

Problem

• GitHub issue (optional): #698

Solution

Your attempt with resetting the velocity was a good first step, but not sufficient. After a quick google-search, I found some other examples that also resetted the fall-distance. (Like https://www.tabnine.com/web/assistant/code/rs/5c65732f1095a50001513a9a#L1830)

The combination of resetting both the velocity and fall-distance seems to work. No single death after 20 attempts.

Action

Feel free to squash my commit with your previous one. I guess there is no need for keeping both commits/commit-messages.

[garbagemule]

I've merged this in manually to get things rolling. Thanks Frank!