Set last_known_joypad_device to "" when no joypad initially connected #87
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The docstring for last_known_joypad_device claims that its value is "" if no joypad is detected, but previously its value in this case was "generic", because it is defined to be the result of get_simplified_device_name() on the 0th joypad's name. If there is no joypad connected, Input.get_joy_name(0) returns "", but get_simplified_device_name() returns "generic" in the case where it can't figure out what a joypad is (such as when it is passed ""). When initialising the variable, check whether any joypads are connected, and special-case the default as "" if not. This matches how the default value of last_known_joypad_index below it is set.
wjt
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In commit 0a547d0 I simplified the way that our input hint components choose a default device: rather than reimplementing Input Helper's device detection, we use a pair of properties from the helper. Unfortunately I picked the wrong ones: I used last_known_joypad_device and last_known_joypad_index. As the name suggests, the last_known_joypad_device will never be "keyboard". Its docstring claims it will be "" if no gamepad is connected; in fact it is currently "generic", which I submitted nathanhoad/godot_input_helper#87 to fix. As a result, if you have no gamepad connected, then gamepad hints will always be shown. Instead, use InputHelper.device and InputHelper.device_index, which are the type and index of the last device that the player used to control the game. Before any input events have been received, these default to joypad 0 if there is a joypad connected, and "keyboard" / -1 if not.
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The docstring for last_known_joypad_device claims that its value is "" if no joypad is detected, but previously its value in this case was "generic", because it is defined to be the result of get_simplified_device_name() on the 0th joypad's name. If there is no joypad connected, Input.get_joy_name(0) returns "", but get_simplified_device_name() returns "generic" in the case where it can't figure out what a joypad is (such as when it is passed "").
When initialising the variable, check whether any joypads are connected, and special-case the default as "" if not. This matches how the default value of last_known_joypad_index below it is set.