updateFromGamepad method

dynamic updateFromGamepad(dynamic gamepad)

@description Poll for updated data based on current gamepad state @param {Object} gamepad - The gamepad object from which the component data should be polled

Implementation

updateFromGamepad(gamepad) {
  // Set the state to default before processing other data sources
  values['state'] = constants['ComponentState']['DEFAULT'];

  // Get and normalize button
  if (gamepadIndices['button'] != null
      && gamepad.buttons.length > gamepadIndices['button']) {
    final gamepadButton = gamepad.buttons[gamepadIndices['button']];
    values['button'] = gamepadButton.value;
    values['button'] = (values['button'] < 0) ? 0 : values['button'];
    values['button'] = (values['button'] > 1) ? 1 : values['button'];

    // Set the state based on the button
    if (gamepadButton.pressed || values['button'] == 1) {
      values['state'] = constants['ComponentState']['PRESSED'];
    } else if (gamepadButton.touched || values['button'] > constants['ButtonTouchThreshold']) {
      values['state'] = constants['ComponentState']['TOUCHED'];
    }
  }

  // Get and normalize x axis value
  if (gamepadIndices['xAxis'] != null
      && gamepad.axes.length > gamepadIndices['xAxis']) {
    values['xAxis'] = gamepad.axes[gamepadIndices['xAxis']];
    values['xAxis'] = (values['xAxis'] < -1) ? -1 : values['xAxis'];
    values['xAxis'] = (values['xAxis'] > 1) ? 1 : values['xAxis'];

    // If the state is still default, check if the xAxis makes it touched
    if (values['state'] == constants['ComponentState']['DEFAULT']
      && values['xAxis'].abs() > constants['AxisTouchThreshold']) {
      values['state'] = constants['ComponentState']['TOUCHED'];
    }
  }

  // Get and normalize Y axis value
  if (gamepadIndices['yAxis'] != null
      && gamepad.axes.length > gamepadIndices['yAxis']) {
    values['yAxis'] = gamepad.axes[gamepadIndices['yAxis']];
    values['yAxis'] = (values['yAxis'] < -1) ? -1 : values['yAxis'];
    values['yAxis'] = (values['yAxis'] > 1) ? 1 : values['yAxis'];

    // If the state is still default, check if the yAxis makes it touched
    if (values['state'] == constants['ComponentState']['DEFAULT']
      && values['yAxis'].abs() > constants['AxisTouchThreshold']) {
      values['state'] = constants['ComponentState']['TOUCHED'];
    }
  }

  // Update the visual response weights based on the current component data
  visualResponses.forEach((key,visualResponse){
    visualResponse.updateFromComponent(values);
  });
}