Pong bot for erlang.

games/pong_bot_e/pong_bot.erl

@@ -0,0 +1,182 @@
+-module(pong_bot).
+-behaviour(gen_server).
+-export([start_link/0]).
+-export([init/1, handle_call/3, handle_cast/2]).
+-export([ggsNetworkReceivedCommandWithArgs/2,set_game_token/1,get_game_token/0]).
+
+start_link() ->
+    gen_server:start_link({global, pong_bot}, pong_bot, [], []).
+
+
+init(_Args) ->
+    Player1 = new_pos(),
+    Player2 = new_pos(),
+    Ball = new_pos(),
+    Paused = true,
+    SendStart = false,
+    GGSNetwork = ggs_network:connect(), %Localhost is set internally inside 
+                                        %ggs_network.
+    State1 = dict:new(),
+    State2 = dict:store(player1, Player1, State1),
+    State3 = dict:store(player2, Player2, State2),
+    State4 = dict:store(ball, Ball, State3),
+    State5 = dict:store(paused, Paused, State4),
+    State6 = dict:store(send_start, SendStart, State5), 
+    State = dict:store(ggs_network, GGSNetwork, State6),
+    State.
+
+new_pos() ->
+    {0, 0}.
+
+
+ggsNetworkReceivedCommandWithArgs(Command, Args) ->
+    case Command of
+        "welcome" -> 
+            welcome(Args);
+        "ball" -> 
+            ball(Args);
+        "player1_y" ->
+            player1_y(Args);
+        "player2_y" ->
+            player2_y(Args);
+        "game" ->
+            game(Args);
+        "player1_points" ->
+            new_round();
+        "player2_points" ->
+            new_round()
+    end.   
+
+welcome(Who_am_I) ->
+    case Who_am_I of 
+        1 ->
+            Me = gen_server:call(pong_bot, player1),
+            gen_server:cast(pong_bot, {me, Me});
+        2 ->
+            Me = gen_server:call(pong_bot, player2),
+            gen_server:cast(pong_bot, {me, Me})
+    end,
+    
+    loop().
+    
+loop() ->
+    timer:sleep(300),
+    gameTick(),
+    loop().
+    
+gameTick() ->
+    GamePaused = gen_server:call(pong_bot, paused),       
+    SendStart = gen_server:call(pong_bot, send_start),
+    
+    case GamePaused of
+        true ->
+            case SendStart of
+                false ->
+                    ggs_network:send_command("start"),
+                    gen_server:cast(pong_bot, {send_start, true})
+            end;
+        false ->
+            Ball = gen_server:call(pong_bot, ball),
+            {_, BallY} = Ball,
+            Me = gen_server:call(pong_bot, me),
+            {_, MeY} = Me,
+            
+            case BallY < (MeY - 5) of
+                true ->
+                    ggs_network:send_command("up");
+                false ->
+                    ggs_network:send_command("down")
+            end
+    end.
+            
+            
+            
+             
+ball(Pos_s) ->
+    PosList = string:tokens(Pos_s, ","),
+    XStr = lists:nth(1,PosList),
+    YStr = lists:nth(1,PosList),
+    X = string:to_integer(XStr),
+    Y = string:to_integer(YStr),
+    Pos = {X, Y},
+    gen_server:cast(pong_bot, {ball, Pos}).
+
+player1_y(YStr) ->
+    Y = string:to_integer(YStr),
+    gen_server:cast(pong_bot, {player1_y, Y}).
+
+player2_y(YStr) ->
+    Y = string:to_integer(YStr),
+    gen_server:cast(pong_bot, {player2_y, Y}).
+
+game(WaitOrStart) ->
+    case WaitOrStart of
+        "wait" ->
+            ok;
+        _ ->
+            gen_server:cast(pong_bot, {paused, false})
+    end.
+
+
+new_round() ->
+    Paused = true,
+    SendStart = false,    
+    gen_server:cast(pong_bot, {new_round, Paused, SendStart}). 
+    
+    
+set_game_token(GameToken) ->
+    gen_server:cast({global, pong_bot}, {game_token, GameToken}).  
+
+get_game_token() ->
+    gen_server:call({global, pong_bot}, game_token).
+    
+handle_call(player1, _From, State) ->
+    Player1 = dict:fetch(player1, State),
+    {reply, Player1, State};        
+
+handle_call(player1_y, _From, State) ->
+    {_,Y} = dict:fetch(player1, State),
+    {reply, Y, State};
+    
+handle_call(player2_y, _From, State) ->
+    {_,Y} = dict:fetch(player2, State),
+    {reply, Y, State};    
+    
+handle_call(game_token, _From, State) ->
+    io:format("Handle call game_token~n"),
+    GameToken = dict:fetch(game_token, State),
+    {reply, GameToken, State}.    
+
+handle_cast({me, Me}, State) ->
+    NewState = dict:store(me, Me, State),
+    {noreply, NewState};
+    
+handle_cast({ball, Pos}, State) ->
+    NewState = dict:store(ball, Pos, State),
+    {noreply, NewState};
+    
+handle_cast({player1_y, Y}, State) ->
+    {OldX, _} = dict:fetch(player1, State),
+    NewPlayer1 = {OldX, Y},
+    NewState = dict:store(player1, NewPlayer1, State),
+    {noreply, NewState};
+    
+handle_cast({player2_y, Y}, State) ->
+    {OldX, _} = dict:fetch(player2, State),
+    NewPlayer2 = {OldX, Y},
+    NewState = dict:store(player2, NewPlayer2, State),
+    {noreply, NewState};
+
+handle_cast({paused, Paused}, State) ->
+    NewState = dict:store(paused, Paused, State),
+    {noreply, NewState};
+    
+handle_cast({new_rouned, Paused, SendStart}, State) ->
+    State1 = dict:store(paused, Paused, State),
+    NewState = dict:store(send_start, SendStart, State1),
+    {noreply, NewState};
+    
+handle_cast({game_token, Token}, State) ->
+    io:format("Handle cast game_token~n"),
+    NewState = dict:store(game_token, Token, State),
+    {noreply, NewState}.