Shooter close player runs

This is the content for when the player is in the original classroom and decides to run after the character runs. One of 2 things happens. Either the 'getToFrontDoors' trigger is activated or the 'getOutOfBuilding' trigger is activated. If the 'getToFrontDoors' trigger is activated then the scenario just starts the 2nd main branch of the game ('shooter far away') and the shooter appears at the bottom of the stairs. This allows us to just re-use the content from the second branch of the game. 

If the objective is get out of the building then the players path to the front door is not blocked. I haven't added the ability to win by clicking on the front doors yet since I know that people are still working on making all doors interactive. Once we figure out what's going on with that I'll finish up that part of the branch.