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authorBjörn Gustavsson <[email protected]>2015-12-10 13:02:00 +0100
committerBjörn Gustavsson <[email protected]>2015-12-14 15:44:24 +0100
commit389834628ef9b199d6ce1ab721a20737acb014d4 (patch)
tree59470bf7fa80de95fe497a8ed88a08d1da1e2e74 /lib/gs/contribs/othello/othello.erl
parent9e12af42b3e71df8d812eca96d5f1e0a3c65e4e9 (diff)
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gs: Remove the contribs directory
Some of the games no longer work. For example, when calling cols:start/0, there will be a 'badfun' exception because of an attempt to apply a tuple fun. There are also calls to the deprecated now/0 function and to the deprecated 'random' module. Since the entire gs application is deprecated and scheduled to be removed any release now, there is no need to keep the contribs directory.
Diffstat (limited to 'lib/gs/contribs/othello/othello.erl')
-rw-r--r--lib/gs/contribs/othello/othello.erl237
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diff --git a/lib/gs/contribs/othello/othello.erl b/lib/gs/contribs/othello/othello.erl
deleted file mode 100644
index c6ad0a76ec..0000000000
--- a/lib/gs/contribs/othello/othello.erl
+++ /dev/null
@@ -1,237 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%% http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-
-%%
--module(othello).
--export([start/0,new_game/4,start1/5]).
-
-
-
-%%----------------------------------------------------------------------
-%% The Othello program now uses the gs graphical package instead of the
-%% pxw package. See module othello_board for details
-%%
-%%----------------------------------------------------------------------
-
-
-start() -> othello_board:start().
-
-new_game(Computer,Player,Depth,Init) ->
- spawn_link(othello,start1,[self(),Computer,Player,Depth,Init]).
-
-start1(Win,Computer,Player,Depth,Init) ->
- Board = othello_adt:new(t),
- random:seed(),
- init_display(Board,Win,Init),
- play(Computer,Player,Board,Depth,Win,1).
-
-play(Computer,Player,Board,Depth,Win,NoDs) ->
- tell_win(Win,Computer,Player),
- case catch continue(Player,Board) of
- {game_over,Result} ->
- game_over(Board,Player,Result,Win);
- {omit_draw,Player} ->
- omit(Player,Win),
- play(Computer,swap(Player),Board,Depth,Win,NoDs);
- ok ->
- Draw = choose_draw(Computer,Player,Board,Depth,Win,NoDs),
- Win ! {self(),draw,Draw},
- Board1 = othello_adt:set(Draw,Player,Board),
- display(Board1,Board,Win),
- play(Computer,swap(Player),Board1,Depth,Win,NoDs+1)
- end.
-
-continue(Player,Board) ->
- Draws = game_over(Player,Board),
- not_allowed(Draws,Player),
- ok.
-
-choose_draw(Computer,Computer,Board,Depth,_Win,NoDs) -> % Depth > 0 !!
- {Draw,_Value} = alpha_beta(Depth,Board,-11000,11000,Computer,NoDs),
-% io:format('Choosen draw is {~w,~w} : (~w)~n',
-% [othello_adt:col(Draw),othello_adt:row(Draw),Value]),
-% io:format('=====================~n',[]),
- Draw;
-choose_draw(Computer,Player,Board,Depth,Win,NoDs) ->
- receive
- {Win,position,Draw} ->
- flush(Win),
- case othello_adt:is_draw(Draw,Player,Board) of
- false ->
- Win ! {self(),illegal_draw,Draw},
- choose_draw(Computer,Player,Board,Depth,Win,NoDs);
- true ->
- Draw
- end
- end.
-
-flush(Win) ->
- receive
- {Win,position,_} ->
- flush(Win)
- after 1 ->
- true
- end.
-
-tell_win(Win,Computer,Player) ->
- Win ! {self(),player,Computer,Player},
- receive
- {Win,go_on_play} -> true
- end.
-
-alpha_beta(0,Board,_,_,Player,_) ->
- {-1,othello_adt:evaluate_board(Player,Board)};
-alpha_beta(Depth,Board,Alpha,Beta,Player,NoDs) ->
- case compute(Player,Board,NoDs) of
- [] ->
- Player1 = swap(Player),
- case compute(Player1,Board,NoDs) of
- [] ->
- dead_lock(Board,Player);
- PosDraws1 ->
- choose(PosDraws1,Board,Depth-1,-Beta,-Alpha,-1,
- Player1,NoDs)
- end;
- PosDraws ->
- choose(PosDraws,Board,Depth-1,-Beta,-Alpha,-1,Player,NoDs)
-% A = choose(PosDraws,Board,Depth-1,-Beta,-Alpha,-1,Player,NoDs),
-% io:format('Alpha-Beta (~w) ==> ~w~n',[Depth,A]),
-% A
- end.
-
-choose([Draw|Draws],Board,Depth,Alpha,Beta,Record,Player,NoDs) ->
- Player1 = swap(Player),
- Board1 = othello_adt:set(Draw,Player,Board),
-% io:format('Alpha <~w> Beta <~w> ~n',[Alpha,Beta]),
- {_,Value} = alpha_beta(Depth,Board1,Alpha,Beta,Player1,NoDs+1),
- Value1 = -Value,
- cutoff(Draw,Value1,Depth,Alpha,Beta,Draws,Board,Record,Player,NoDs);
-choose([],_,_,Alpha,_,Draw,_,_) ->
- {Draw,Alpha}.
-
-cutoff(Draw,Value,_,_,Beta,_,_,_,_,_) when Value >= Beta ->
- {Draw,Value};
-cutoff(Draw,Value,Depth,Alpha,Beta,Draws,Board,_,Player,NoDs)
- when Alpha < Value, Value < Beta ->
- choose(Draws,Board,Depth,Value,Beta,Draw,Player,NoDs);
-cutoff(Draw,Value,Depth,Alpha,Beta,Draws,Board,Record,Player,NoDs)
- when Value == Alpha, NoDs < 13 ->
- choose(Draws,Board,Depth,Alpha,Beta,random_choice(Draw,Record),
- Player,NoDs);
-cutoff(_Draw,Value,Depth,Alpha,Beta,Draws,Board,Record,Player,NoDs)
- when Value =< Alpha ->
- choose(Draws,Board,Depth,Alpha,Beta,Record,Player,NoDs).
-
-compute(Player,Board,NoOfDraws) when NoOfDraws < 13 ->
- case othello_adt:possible_draws(Player,Board,begin_play) of
- [] ->
- othello_adt:possible_draws(Player,Board,playing);
- Draws ->
- Draws
- end;
-compute(Player,Board,_) ->
- othello_adt:possible_draws(Player,Board,playing).
-
-%%----------------------------------------------------------
-%% Randomly choose between two draws with the same value.
-%%----------------------------------------------------------
-
-random_choice(Draw,Draw1) ->
- case random:uniform(2) of
- 1 ->
- Draw;
- 2 ->
- Draw1
- end.
-
-dead_lock(Board,Player) ->
- case win_or_loose(Board,Player) of
- 0 -> {-1,0};
- Value when Value > 0 -> {-1,10000};
- _ -> {-1,-10000}
- end.
-
-win_or_loose(Board,Player) ->
- Player1 = swap(Player),
- othello_adt:pieces(Player,Board) - othello_adt:pieces(Player1,Board).
-
-game_over(Player,Board) ->
- case othello_adt:possible_draws(Player,Board,playing) of
- [] ->
- Player1 = swap(Player),
- case othello_adt:possible_draws(Player1,Board,playing) of
- [] ->
- throw({game_over,{{Player,othello_adt:pieces(Player,Board)},
- {Player1,othello_adt:pieces(Player1,Board)}}});
- _ ->
- [] % Player`s Draws !!
- end;
- Draws ->
- Draws
- end.
-
-game_over(_Board,_Player,Result,Win) ->
- Win ! {self(),game_over,white_res(Result),black_res(Result)}.
-
-white_res({{white,Res},_}) -> Res;
-white_res({_,{white,Res}}) -> Res.
-
-black_res({{black,Res},_}) -> Res;
-black_res({_,{black,Res}}) -> Res.
-
-not_allowed([],Player) ->
- throw({omit_draw, Player});
-not_allowed(_,_Player) ->
- ok.
-
-omit(Player,Win) ->
- Win ! {self(),omit_draw,Player},
- receive
- {Win,continue} ->
- ok
- end.
-
-init_display(_Board,_Win,first_time) ->
- true;
-init_display(Board,Win,_) ->
- display(Board,Win).
-
-display(Board,Win) ->
- All = othello_adt:all_pos(Board),
- display1(All,Win),
- Win ! {self(),score,othello_adt:pieces(white,Board),
- othello_adt:pieces(black,Board)}.
-
-display(Board,OldB,Win) ->
- Diff = othello_adt:diff(Board,OldB),
- display1(Diff,Win),
- Win ! {self(),score,othello_adt:pieces(white,Board),
- othello_adt:pieces(black,Board)}.
-
-display1([{Pos,Colour}|Diff],Win) ->
- Win ! {self(),new_mark,Pos,Colour},
- display1(Diff,Win);
-display1(_,_) ->
- true.
-
-swap(white) -> black;
-swap(black) -> white.
-
-