Add waterfall & some sound effects.

[knightofiam]

• FEATURES:

  • ENVIRONMENT: Add animated waterfall (rough draft) with positional
    audio. It's really loud if you're standing under it, but gets
    quieter pretty quickly as you walk away.
  • SOUND: Add outdoor summer ambience.
  • SOUND: Add cliff scraping sound that modulates according to vertical
    velocity (i.e., higher-pitched when falling faster & scraping,
    lower-pitched when falling slower & scraping).
  • DEBUGGING: Add pressing 'R' key respawns at top of cliffs, mainly
    for testing.
  • DEBUGGING: Add falling stats to player debugging text (press 'T' to
    show/hide debugging text).

• BUGFIXES:

  • CLIMBING: Stop cliff scraping when you reach the ground.
  • CLIMBING: Don't allow going into horizontal climbing state from
    jumping state.
  • CLIMBING: Climbing preparation time now resets if you let go of the
    up arrow before beginning to climb up. This is so after facing the
    cliffs for a while, you can't just skip the preparation time when
    you decide to start climbing. You must always have the delay between
    pressing the up arrow while facing the cliffs and the actual start
    of climbing, and this requires the up arrow key to be held down.
  • ANIMATION: Enable pixel snap to prevent waterfall sprite sections
    tearing.
  • ANIMATION: Enable forcing 60 FPS for consistent animation & game
    speed, and to simplify debugging.

• REFACTORING:

  • TOOLS: Make some utility methods in Tools class publicly accessible
    (they were mistakenly private after refactoring them out of
    Player.cs.)
  • PLAYER: Remove unnecessary TODO comment about removing unused
    _isClimbingRight. Just leave it for now, since it should be paired
    with _isClimbingLeft.