Make friendly to JS backend

README.md

@@ -96,6 +96,13 @@ Greater documentation is being built at the wiki on this repository.
 
 Visit <https://github.com/JohnAD/turn_based_game/wiki>
 
+# Videos
+
+The following two videos (to be watched in order), demonstrate how to use this library and the 'turn_based_game' library:
+
+1. Using "turn_based_game": https://www.youtube.com/watch?v=u6w8vT-oBjE
+2. Using "negamax": https://www.youtube.com/watch?v=op4Mcgszshk
+
 # Credit
 
 The code for this engine mimics that written in Python at the EasyAI library located at <https://github.com/Zulko/easyAI>. That library contains both the game rule engine (called TwoPlayerGame) as well as a variety of AI algorithms to play as game players, such as Negamax.

src/turn_based_game.nim

@@ -70,8 +70,13 @@ method get_move*(self: Player, game: Game): string {.base.} =
     else:
       for key, value in descriptive_move_list.pairs():
         echo TAB & TAB & "[$key]: $value".format("key", key, "value", value)
-    stdout.write TAB & "Enter move (or 'quit'): "
-    var response = readLine(stdin)
+    echo TAB & "Enter move (or 'quit'): "
+    var response: string
+    when defined(js):
+      # for some reason, generating a raise does not work.
+      response = "When compiling for Javascript, you cannot use this procedure."
+    else:
+      response = readLine(stdin)
     if response in move_list:
       return response
     if response == "quit":

turn_based_game.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "1.1.1"
+version       = "1.1.2"
 author        = "John Dupuy"
 description   = "Game rules framework for turn-based games"
 license       = "MIT"