BattleINF Tower Floor Selector

function goToTower(floor) {
  'use strict';

  /*globals angular*/
  if (floor > 0) {
    var $body = angular.element(document.body),
      $injector = $body.injector(),
      $scope = $body.scope(),
      $http = $injector.get('$http'),
      $location = $injector.get('$location');

    if ($http && $scope && $scope.g) {
      $http({
        method: 'POST',
        url: '/user/setStage',
        data: {
          stageArgs: {
            areaId: '0',
            stageIndex: floor - 1
          }
        }
      }).success(function (data) {
        $scope.g.stage = {
          name: data.stageName,
          activity: data.activity,
          monsters: data.monsters,
          requirements: data.requirements,
          messages: []
        };

        $scope.user.lastStageId = data.stageId;

        if ($location) {
          $location.path('world/location');
        }
      });
    }
  }
}