Alternative: Curry a function in Lua.lua

-- EXAMPLE NOTE: fantasies about how this might look without currying
-- EXAMPLE NOTE: (probably this can be written more beautifully but at least the context in the form of the robot argument in each call needs to be carried, and you will need to subscribe to something in it too)

-- EXAMPLE NOTE: this would be called before the start of the animation
function M.create_dropping_callback_1(mob)
    mob.mob_tile_x, mob.mob_tile_y = collision_utils.posToTiles(mob.pos)
end

-- EXAMPLE NOTE: this during the transition to the "dropping" animation
function M.create_dropping_callback_2(mob, targetX, targetY)
    local animation_suffix = distingushSide(mob.mob_tile_x, mob.mob_tile_y, targetX, targetY)
    mob.is_left = animation_suffix == "left"
    mob.animation_name = "grab_" .. animation_suffix
    mob.is_failed = false
end

-- EXAMPLE NOTE: at the moment of the keyframe
function create_dropping_callback_3(mob)
    mob.processing = true
    spine.play_anim(mob.spine_model_url, randomizeMobsAniamtion(animation_name, mob.animationSuffix, mob.isCargomate), go.PLAYBACK_ONCE_FORWARD, {playback_rate = M.get_speed_multiplier(mob) or 1},
    function(self, message_id, message, sender)
            local colObj = collision_utils.checkCollision(mob, collision_utils.tilesToPos(targetX, targetY), 32, {M.mobs}, SINGLE)
            if message_id == hash("spine_animation_done") then
                -- if the animation ends, proceed to the next step
                mob.processing = false

            elseif colObj then
                -- at the keyframe, feed the element to the robot if it is not busy
                local element
                if is_left then
                    element = mob.elementsStack.left
                    mob.elementsStack.left = nil
                else
                    element = mob.elementsStack.right
                    mob.elementsStack.right = nil
                end
                M.eatElement(colObj.obj, element, nil, true)
                goToNextStep(getCurrentCommand(mob), mob)

            else 
                is_failed = true
                mob.processing = false
                if not tryToGoOnError(getCurrentCommand```lua
(mob), mob) then
                    mob.afkTimer = 1
                    showError(mob)
                    mob.execResult = false
                end
            end
    end)

    -- EXAMPLE NOTE: and here you would somehow wisely clean up the fields
end