Gamepad API added.

pixelgl/joystick.go

@@ -4,7 +4,7 @@ import (
 	"github.com/go-gl/glfw/v3.3/glfw"
 )
 
-// Joystick is a joystick or controller.
+// Joystick is a joystick or controller (gamepad).
 type Joystick int
 
 // List all of the joysticks.
@@ -29,6 +29,47 @@ const (
 	JoystickLast = Joystick(glfw.JoystickLast)
 )
 
+// GamepadAxis corresponds to a gamepad axis.
+type GamepadAxis int
+
+// Gamepad axis IDs.
+const (
+	AxisLeftX        = GamepadAxis(glfw.AxisLeftX)
+	AxisLeftY        = GamepadAxis(glfw.AxisLeftY)
+	AxisRightX       = GamepadAxis(glfw.AxisRightX)
+	AxisRightY       = GamepadAxis(glfw.AxisRightY)
+	AxisLeftTrigger  = GamepadAxis(glfw.AxisLeftTrigger)
+	AxisRightTrigger = GamepadAxis(glfw.AxisRightTrigger)
+	AxisLast         = GamepadAxis(glfw.AxisLast)
+)
+
+// GamepadButton corresponds to a gamepad button.
+type GamepadButton int
+
+// Gamepad button IDs.
+const (
+	ButtonA           = GamepadButton(glfw.ButtonA)
+	ButtonB           = GamepadButton(glfw.ButtonB)
+	ButtonX           = GamepadButton(glfw.ButtonX)
+	ButtonY           = GamepadButton(glfw.ButtonY)
+	ButtonLeftBumper  = GamepadButton(glfw.ButtonLeftBumper)
+	ButtonRightBumper = GamepadButton(glfw.ButtonRightBumper)
+	ButtonBack        = GamepadButton(glfw.ButtonBack)
+	ButtonStart       = GamepadButton(glfw.ButtonStart)
+	ButtonGuide       = GamepadButton(glfw.ButtonGuide)
+	ButtonLeftThumb   = GamepadButton(glfw.ButtonLeftThumb)
+	ButtonRightThumb  = GamepadButton(glfw.ButtonRightThumb)
+	ButtonDpadUp      = GamepadButton(glfw.ButtonDpadUp)
+	ButtonDpadRight   = GamepadButton(glfw.ButtonDpadRight)
+	ButtonDpadDown    = GamepadButton(glfw.ButtonDpadDown)
+	ButtonDpadLeft    = GamepadButton(glfw.ButtonDpadLeft)
+	ButtonLast        = GamepadButton(glfw.ButtonLast)
+	ButtonCross       = GamepadButton(glfw.ButtonCross)
+	ButtonCircle      = GamepadButton(glfw.ButtonCircle)
+	ButtonSquare      = GamepadButton(glfw.ButtonSquare)
+	ButtonTriangle    = GamepadButton(glfw.ButtonTriangle)
+)
+
 // JoystickPresent returns if the joystick is currently connected.
 //
 // This API is experimental.
@@ -62,32 +103,32 @@ func (w *Window) JoystickAxisCount(js Joystick) int {
 // If the button index is out of range, this will return false.
 //
 // This API is experimental.
-func (w *Window) JoystickPressed(js Joystick, button int) bool {
+func (w *Window) JoystickPressed(js Joystick, button GamepadButton) bool {
-	return w.currJoy.getButton(js, button)
+	return w.currJoy.getButton(js, int(button))
 }
 
 // JoystickJustPressed returns whether the joystick Button has just been pressed down.
 // If the button index is out of range, this will return false.
 //
 // This API is experimental.
-func (w *Window) JoystickJustPressed(js Joystick, button int) bool {
+func (w *Window) JoystickJustPressed(js Joystick, button GamepadButton) bool {
-	return w.currJoy.getButton(js, button) && !w.prevJoy.getButton(js, button)
+	return w.currJoy.getButton(js, int(button)) && !w.prevJoy.getButton(js, int(button))
 }
 
 // JoystickJustReleased returns whether the joystick Button has just been released up.
 // If the button index is out of range, this will return false.
 //
 // This API is experimental.
-func (w *Window) JoystickJustReleased(js Joystick, button int) bool {
+func (w *Window) JoystickJustReleased(js Joystick, button GamepadButton) bool {
-	return !w.currJoy.getButton(js, button) && w.prevJoy.getButton(js, button)
+	return !w.currJoy.getButton(js, int(button)) && w.prevJoy.getButton(js, int(button))
 }
 
 // JoystickAxis returns the value of a joystick axis at the last call to Window.Update.
 // If the axis index is out of range, this will return 0.
 //
 // This API is experimental.
-func (w *Window) JoystickAxis(js Joystick, axis int) float64 {
+func (w *Window) JoystickAxis(js Joystick, axis GamepadAxis) float64 {
-	return w.currJoy.getAxis(js, axis)
+	return w.currJoy.getAxis(js, int(axis))
 }
 
 // Used internally during Window.UpdateInput to update the state of the joysticks.
@@ -98,8 +139,15 @@ func (w *Window) updateJoystickInput() {
 		w.tempJoy.connected[js] = joystickPresent
 
 		if joystickPresent {
+			if glfw.Joystick(js).IsGamepad() {
+				gamepadInputs := glfw.Joystick(js).GetGamepadState()
+
+				w.tempJoy.buttons[js] = gamepadInputs.Buttons[:]
+				w.tempJoy.axis[js] = gamepadInputs.Axes[:]
+			} else {
 				w.tempJoy.buttons[js] = glfw.Joystick(js).GetButtons()
 				w.tempJoy.axis[js] = glfw.Joystick(js).GetAxes()
+			}
 
 			if !w.currJoy.connected[js] {
 				// The joystick was recently connected, we get the name
@@ -132,7 +180,7 @@ func (js *joystickState) getButton(joystick Joystick, button int) bool {
 	if js.buttons[joystick] == nil || button >= len(js.buttons[joystick]) || button < 0 {
 		return false
 	}
-	return js.buttons[joystick][byte(button)] == 1
+	return js.buttons[joystick][byte(button)] == glfw.Press
 }
 
 // Returns the value of a joystick axis, returning 0 if the button or joystick is invalid.