source: tests/exceptions/cardgame.cfa@ 0497b6ba

Last change on this file since 0497b6ba was 3f219eb, checked in by caparson <caparson@…>, 22 months ago

fixed bug where uninit mem was sometimes printed in test
  • Property mode set to 100644
File size: 6.4 KB
Line 
1#include <fstream.hfa> // sin/sout
2#include <stdlib.hfa> // convert
3#include <string.h>
4#include <coroutine.hfa>
5
6ExceptionDecl( Schmilblick );
7
8enum { DEATH_DECK_DIVISOR = 7 };
9
10coroutine Player {
11 PRNG & prng;
12 unsigned int id; // identity of the player
13 Player * partner[2]; // task on the left and right
14 unsigned int deck; // size of the deck currently in play
15}; // Player
16
17void players( unsigned int num );
18void ?{}( Player & player, PRNG & prng, unsigned int id );
19void start( Player & player, Player & lp, Player & rp ); // supply partners
20void play( Player & player, unsigned int deck );
21void drink( Player & player );
22
23enum { RIGHT = 0, LEFT = 1 };
24
25enum {
26 MinCardsTaken = 1, // minimum number of cards allowed to draw
27 MaxCardsTaken = 8 // maximum number of cards allowed to draw
28};
29
30static unsigned int NumPlayersRemaining; // number of players currently in the game
31static unsigned int rounds; // count rounds during Schmilblick
32
33static unsigned int MakePlay( Player & player, unsigned int RemainingCards ) with( player ) {
34 unsigned int took = min( RemainingCards, (typeof(RemainingCards))prng( prng, MinCardsTaken, MaxCardsTaken ) ); // cards drawn
35 unsigned int passing = RemainingCards - took; // remaining cards in the deck to be passed
36 return passing;
37} // Player::MakePlay
38
39void main( Player & player ) with( player ) {
40 try {
41 suspend; // return immediately after establishing starter
42 poll();
43
44 for ( ;; ) {
45 if ( partner[LEFT] == &player ) { // stop when only one player
46 sout | id;
47 break;
48 } // exit
49
50 bool die = (deck % DEATH_DECK_DIVISOR) == 0; // check before making a play
51 deck = MakePlay( player, deck ); // make a play
52 if ( deck == 0 ) break; // stop when no cards left
53
54 if ( die ) {
55 partner[LEFT]->partner[RIGHT] = partner[RIGHT]; // unlink node
56 partner[RIGHT]->partner[LEFT] = partner[LEFT];
57 NumPlayersRemaining -= 1;
58 } else if ( prng( prng, 10 ) == 0 ) {
59 try {
60 drink( *partner[RIGHT] ); // have a drink
61 poll();
62 } catchResume( Schmilblick * ) { // stop cycle
63 } // try
64 } // if
65 play( *partner[deck & 1], deck ); // odd goes left, even goes right
66 } // for
67 } catchResume( Schmilblick * ) {
68 drink( *partner[RIGHT] ); // have a drink
69 } // try
70} // Player::main
71
72void ?{}( Player & player, PRNG & prng, unsigned int id ) with( player ) {
73 &player.prng = &prng; player.id = id;
74} // Player::Player
75
76void start( Player & player, Player & lp, Player & rp ) with( player ) { // obtain the partner identifier
77 partner[LEFT] = &lp;
78 partner[RIGHT] = &rp;
79 resume( player ); // establish main as starter for termination
80} // Player::start
81
82void players( unsigned int num ) {
83 NumPlayersRemaining = num;
84} // Player::players
85
86void play( Player & player, unsigned int deck ) with( player ) { // send the deck to the partner
87 player.deck = deck;
88 resume( player );
89 poll();
90} // Player::play
91
92void drink( Player & player ) with( player ) { // cause partner to drink
93 resumeAt( player, ExceptionInst( Schmilblick ) );
94 resume( player );
95} // Player::drink
96
97static unsigned int rightOf( unsigned int me, unsigned int total ) {
98 return ( me + 1 ) % total;
99} // rightOf
100
101static unsigned int leftOf( unsigned int me, unsigned int total ) {
102 return ( me != 0 ) ? me - 1 : total - 1;
103} // leftOf
104
105// convert(...) throws out_of_range or invalid_argument
106ExceptionDecl( cmd_error );
107
108int main( int argc, char * argv[] ) {
109 enum {
110 MinNoPlayers = 2, // minimum players in the game
111 MaxNoPlayers = 10, // maximum players in the game
112 MinNoCards = 10, // minimum cards in the deck
113 MaxNoCards = 200, // maximum cards in the deck
114 DefaultGames = 50, // default games to play
115 };
116 intmax_t numGames = DefaultGames; // games to play
117 intmax_t numPlayers = 0; bool playersSet = false; // players for a particular game
118 intmax_t numCards = 0; bool cardsSet = false; // cards in the deck for a game
119 intmax_t seed = 2423; // random-number seed
120
121 try {
122 switch ( argc ) {
123 case 5:
124 if ( strcmp( argv[4], "d" ) != 0 ) { // default ?
125 seed = convert( argv[4] ); if ( seed < 1 ) throw ExceptionInst( cmd_error ); // invalid ?
126 } // if
127 // FALL THROUGH
128 case 4:
129 if ( strcmp( argv[3], "d" ) != 0 ) { // default ?
130 numCards = convert( argv[3] ); if ( numCards < 1 ) throw ExceptionInst( cmd_error ); // invalid ?
131 cardsSet = true;
132 } // if
133 // FALL THROUGH
134 case 3:
135 if ( strcmp( argv[2], "d" ) != 0 ) { // default ?
136 numPlayers = convert( argv[2] ); if ( numPlayers < 2 ) throw ExceptionInst( cmd_error ); // invalid ?
137 playersSet = true;
138 } // if
139 // FALL THROUGH
140 case 2:
141 if ( strcmp( argv[1], "d" ) != 0 ) { // default ?
142 numGames = convert( argv[1] ); if ( numGames < 0 ) throw ExceptionInst( cmd_error ); // invalid ?
143 } // if
144 // FALL THROUGH
145 case 1: // defaults
146 break;
147 default: // wrong number of options
148 throw ExceptionInst( cmd_error );
149 } // switch
150 } catch( exception_t * ) { // catch any
151 exit | "Usage: " | argv[0]
152 | " [ games (>=0) | 'd' (default " | DefaultGames
153 | ") [ players (>=2) | 'd' (random " | MinNoPlayers | "-" | MaxNoPlayers
154 | ") [ cards (>0) | 'd' (random " | MinNoCards | "-" | MaxNoCards
155 | ") [ seed (>0) | 'd' (random) ] ] ] ]";
156 } // try
157
158 PRNG mprng, pprng;
159 if ( seed != 0 ) { // specified on command line ?
160 set_seed( mprng, seed ); set_seed( pprng, seed );
161 } // if
162 sout | "start";
163 for ( unsigned int game = 1; game <= (unsigned int)numGames; game += 1 ) {
164 if ( ! playersSet ) numPlayers = prng( mprng, MinNoPlayers, MaxNoPlayers );
165 if ( ! cardsSet ) numCards = prng( mprng, MinNoCards, MaxNoCards );
166 {
167 Player * players[numPlayers];
168
169 players( numPlayers ); // set number of players in game
170
171 for ( unsigned int i = 0; i < (unsigned int)numPlayers; i += 1 ) { // start the players
172 players[i] = &(*malloc()){ pprng, i };
173 } // for
174
175 // Tell each player who its partner is.
176 for ( unsigned int i = 0; i < (unsigned int)numPlayers; i += 1 ) {
177 start( *players[i], *players[leftOf(i, numPlayers)], *players[rightOf(i, numPlayers)] );
178 } // for
179
180 play( *players[ prng( mprng, numPlayers ) ], numCards ); // dealer starts the game
181 for ( unsigned int i = 0; i < (unsigned int)numPlayers; i += 1 ) { // delete players when the game is over
182 delete( players[i] );
183 } // for
184 }
185 } // for
186 sout | "done";
187} // main
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