Code re-written for GameMaker Studio 2

It's been a long while since I updated this project, nearly two years in fact, but now I'm used to how GameMaker Studio 2 works I thought it was time I made use of it's features. So it's bye bye to all the auto-generated scripts that get created when importing the GMS1.4 code into GMS2. All code has been re-written to take advantage of the latest version of GMS. Here's a full list:

Changes from the GMS1.4 version to GMS2:

• Properly set up layers for the rooms, since GMS2 uses them rather setting depth for each object.
• Speaking of layers, the function "instance_create()" was replaced in GMS2 by instance_create_layer() and instance_create_depth(). I've gone through and made sure the function instance_create_layer() has been used throughout the code. This change makes handling objects a little easier, thanks YoYo Games!
• Globalvars were removed from GMS2, so any variables defined using globalvar are now just global variables (global.variablename)
• For some reason that I've forgotten, I used Draw End events to draw the messages on the screen. I've changed all objects to use Draw GUI events which is SO much easier as now the game doesn't need to work out where on the map you are before it draws the message. What was I thinking?
• To that end, I totally re-wrote the draw_message(), draw_char_message() and draw_char_solved() scripts. 
  • The text boxes no longer need to be told how wide and high they should be - the script does that for you from the string it's given.
  • The draw_char_solved() script is gone, draw_char_message() now does the job for both.
  • You want a conversation with a character that's longer than two text boxes? Yep, the re-written code now supports this.
  • Naturally the puzzle text boxes, along with the "You got a coin" and "You lost a life"/"Game Over" messages benefit from these changes. Go wild with your writing
  Plus a few minor changes to make the code more readable. Nothing spectacular but I hope it helps!