Testing

 - basic grappling hook:
    - shoot a grappling hook
    - swing on a grappling hook
    - shift to stop swinging
    - climb up/down grappling hook
    - walk with a grappling hook attached
    - bend rope when grappling hook is attached
    - bend rope when throwing rope
    - unbend rope
    - use shift to reel in rope after throwing it
    - jump and detach
    - detach without jumping
    - remove before attaching
    - test using "throw right hook" alternate key
    - check using grappling hook in off hand
    - check that rope unattaches when mining the block its attached to
    - check tooltip, tooltip+shift, tooltip+ctrl
    - check that item texture changes when attached
    - check that rope detaches when player dies
    - check that rope detaches when player throws item (with q)
    - check underwater
    - check that detaches when riding a horse
    - check that momentum stops when hitting a wall
 - check max length
    - when swinging
    - when climbing
    - when walking with a grappling hook attached
    - all of above when rope is bent
 - ender staff
    - launch with ender staff
    - check if it still works when attached with a grappling hook
    - check that ender staff is re-charged on ground
    - check that ender staff charges slowly in air
    - check that ender staff is re-charged from grappling hook attach
    - check sound effect
    - check tooltip
 - forcefield
    - use forcefield
    - use shift to slow down
    - check with ender staff
    - check tooltip
 - long fall boots
    - check that fall damage is canceled
    - test crafting using modifier block
 - grappling hook modifier
    - check that can open gui
    - check that all categories are available in creative mode
    - check that categories are locked in survival mode
    - check that using upgrades unlocks categories
    - check that sliders and checkboxes can be modified
    - check that modifications are applied to grappling hook
    - check reset button
    - check that options are greyed-out when there are incompatibilities
    - check that block drops + upgrades when mined (also that block doesn't insta-break)
    - check easter egg
    - check help screen
    - check that options persist when reloading world
 - crafting
    - check all crafting recipes
    - make sure crafting upgrades are kept when creating upgraded grappling hooks
    - check creative tab
    - check that upgraded hooks are in creative tab
 - air friction controller
    - check that player has less air friction after a swing/ender staff/etc
    - check that momentum stops after hitting a wall
- multiplayer
    - check that dedicated server doesn't crash
    - check that can see other players grappling hooks
    - check basic functionality
 - grappling hook upgrades
    - test main functionality of all craftable grappling hooks
        - motor: test motor pull, and disabling motor using shift
        - magnet hook: test hook attraction and forcefield repulsion. Also check basic functionality in the future city map
        - ender staff: test ender staff while swinging, and while not swinging. Also check basic functionality in the future city map
        - rocket: test rocket while swinging, and from a standstill while not swinging, also check sound effect
        - smart motor: test using crosshairs for smart hook (vertical). Also check basic functionality combined with boots with all 3 encantments in the titanfall 2 map
        - double motor: test throwing at angles (+ shift), test motor pull, and using crosshairs for double motor smart hook (horizontal). Also check that 2 extra crosshairs are drawn.
        - rocket double motor: same tests as double motor and rocket. Also check that 3 extra crosshairs are drawn, plus rocket fuel when using rocket. Check that rocket fuel auto-refills. Also check basic functionality in the Shiganshina map
    - check that item texture changes for the appropriate upgrades
    - check that tooltip changes
    - test all upgrades using the modifier
        - rope
            - rope length
            - phase rope
            - sticky rope
            - dedicated climbing key
        - forcefield
            - enabled
            - repel force
        - hook thrower
            - gravity on hook. Also check that values <1 are only unlocked after limits upgrade
            - throw speed
            - crouch to reel in
            - vertical throw angle
            - crouching throw angle
            - detach hook on button/key release
        - hook magnet
            - magnet enabled
            - attraction radius
        - motor
            - motor enabled
            - motor max speed
            - motor acceleration
            - motor when on/off button held
            - motor when on/off button not held
            - smart moter
            - sideways motion dampener. Also check that only unlocked after limits upgrade
            - pull backwards
        - double hook
            - enabled
            - check with motor
            - smart motor
            - check with vertical smart motor
            - check with both horizontal and vertical smart motor
            - angle
            - angle when crouching
            - angle + throwing vertical angle
            - allow pulling with one rope
        - swing speed
            - swing speed
        - rocket
            - rocket enabled
            - rocket force
            - rocket time
            - rocket refuel time ratio
            - rocket vertical angle
        - ender staff
            - ender staff
 - enchantments
    - check that enchantments are obtainable through enchanting table
    - wallrunning
        - check wallrunning
        - check wallrun jump
        - check wallrun time-out
        - check wallrunning off a corner
        - check wallrunning after another wallrun using parallel / perpendicular walls
        - check sound effects for footsteps and jump
        - check screen tilt
    - sliding
        - check sliding from an ender staff
        - check sliding from a wallrun
        - check sliding jump
        - check that player can't move during a slide
        - check sliding from a run
        - check sliding from a run + jump
        - check that sliding doesn't work from a walk
        - check that sliding doesn't work from a jump at low speed
        - check that player comes to a stop, and can start walking again
        - check that slide goes up stairs/slabs
        - check sound effect
    - double-jump
        - check double-jump from standstill
        - check double-jump after a wallrun
        - check double-jump after a grappling hook swing
        - check that double-jump is recharged after landing on ground
        - check that double-jump isn't recharged in air
        - check sound effect
 - keybinds
    - check remapping keybinds
    - check that keybinds don't conflict (e.g. being unable to punch in midair when another keybind is mapped to left click)
 - config options
    - check that config file and config gui exist and contain the config options
    - check that (non-client) options are synced when logging on to a dedicated server
    - test a boolean grappling hook custom option in options->grapplinghook->custom->...
        - check that default value is reflected when getting a new grappling hook
        - check enabled 0 -> available in modifier block without limits upgrade, 1 -> only with limits upgrade, 2 -> not enabled
    - test a double grappling hook custom option in options->grapplinghook->custom->...
        - check that default value is reflected when getting a new grappling hook
        - check enabled 0 -> available in modifier block without limits upgrade, 1 -> only with limits upgrade, 2 -> not enabled
        - test min/max without limits upgrade
        - test min_upgrade/max_upgraded with limits upgrade
    - options
        - grapplinghook
            - custom
                - grapplingBlocks
                - grapplingNonBlocks
                - grappleBreakBlocks
            - other
                - hookaffectsentities
                - rope_snap_buffer
                - default_durability
                - rope_jump_power
                - rope_jump_at_angle
                - rope_jump_cooldown
                - climb_speed
        - longfallboots
            - longfallbootsrecipe
        - enderstaff
            - ender_staff_strength
            - ender_staff_recharge
        - enchantments
            - wallrun
                - wall_jump_up
                - wall_jump_side
                - max_wallrun_time
                - wallrun_speed
                - wallrun_max_speed
                - wallrun_drag
                - wallrun_min_speed
                - enchant_rarity_wallrun
            - doublejump
                - doublejumpforce
                - doublejump_relative_to_falling
                - dont_doublejump_if_falling_faster_than
                - enchant_rarity_doublejump
            - slide
                - slidingjumpforce
                - sliding_friction
                - sliding_min_speed
                - sliding_end_min_speed
                - enchant_rarity_sliding
        - other
            - override_allowflight
            - airstrafe_max_speed
            - airstrafe_acceleration
            - dont_override_movement_in_air
    - clientOptions
        - camera
            - wallrun_camera_tilt_degrees
            - wallrun_camera_animation_s
        - sounds
            - wallrun_sound_effect_time_s
            - wallrun_sound_volume
            - doublejump_sound_volume
            - slide_sound_volume
            - wallrunjump_sound_volume
            - rocket_sound_volume
            - enderstaff_sound_volume