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More gamepad documentation #1499

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More gamepad documentation #1499

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32 changes: 20 additions & 12 deletions Sources/kha/input/Gamepad.hx
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Original file line number Diff line number Diff line change
Expand Up @@ -5,53 +5,61 @@ package kha.input;
class Gamepad {
var index: Int;

public static function get(index: Int = 0): Gamepad {
public static function get(index: Int = 0): Null<Gamepad> {
if (index >= instances.length)
return null;
return instances[index];
}

public static function notifyOnConnect(?connectListener: Int->Void, ?disconnectListener: Int->Void): Void {
/**
Use this event to get connected gamepad `index` and listen to it with `Gamepad.get(index).notify(axisListener, buttonListener)`.

Remember to also check `Gamepad.get(0)`, gamepads may already be connected before the application was initialized.
**/
public static function notifyOnConnect(?connectListener: (index: Int) -> Void, ?disconnectListener: (index: Int) -> Void): Void {
if (connectListener != null)
connectListeners.push(connectListener);
if (disconnectListener != null)
disconnectListeners.push(disconnectListener);
}

public static function removeConnect(?connectListener: Int->Void, ?disconnectListener: Int->Void): Void {
public static function removeConnect(?connectListener: (index: Int) -> Void, ?disconnectListener: (index: Int) -> Void): Void {
if (connectListener != null)
connectListeners.remove(connectListener);
if (disconnectListener != null)
disconnectListeners.remove(disconnectListener);
}

public function notify(?axisListener: Int->Float->Void, ?buttonListener: Int->Float->Void): Void {
/**
In `axisListener`, `axisId` is axis id (for example `axis == 0` is L-stick `x`, `1` is L-stick `y`, `2` is R-stick `x`, `3` is R-stick `y`, ...) and `value` is in `-1.0 - 1.0` range.

In `buttonListener`, `buttonId` is pressed button id (layout depends on `vendor`), and `value` is in `0 - 1.0` range how hard the button is pressed.
**/
public function notify(?axisListener: (axisId: Int, value: Float) -> Void, ?buttonListener: (buttonId: Int, value: Float) -> Void): Void {
if (axisListener != null)
axisListeners.push(axisListener);
if (buttonListener != null)
buttonListeners.push(buttonListener);
}

public function remove(?axisListener: Int->Float->Void, ?buttonListener: Int->Float->Void): Void {
public function remove(?axisListener: (axisId: Int, value: Float) -> Void, ?buttonListener: (buttonId: Int, value: Float) -> Void): Void {
if (axisListener != null)
axisListeners.remove(axisListener);
if (buttonListener != null)
buttonListeners.remove(buttonListener);
}

static var instances: Array<Gamepad> = new Array();
static var instances: Array<Gamepad> = [];

var axisListeners: Array<Int->Float->Void>;
var buttonListeners: Array<Int->Float->Void>;
var axisListeners: Array<(axisId: Int, value: Float) -> Void> = [];
var buttonListeners: Array<(buttonId: Int, value: Float) -> Void> = [];

static var connectListeners: Array<Int->Void> = new Array();
static var disconnectListeners: Array<Int->Void> = new Array();
static var connectListeners: Array<(index: Int) -> Void> = [];
static var disconnectListeners: Array<(index: Int) -> Void> = [];

function new(index: Int = 0, id: String = "unknown") {
connected = false;
this.index = index;
axisListeners = new Array<Int->Float->Void>();
buttonListeners = new Array<Int->Float->Void>();
instances[index] = this;
}

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