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cardgame.cfa @ e78966e

Last change on this file since e78966e was 3f219eb, checked in by caparson <caparson@…>, 12 months ago
fixed bug where uninit mem was sometimes printed in test
Property mode set to `100644`
File size: 6.4 KB

Rev	Line
[df8ba61a]	1	#include <fstream.hfa> // sin/sout
	2	#include <stdlib.hfa> // convert
	3	#include <string.h>
	4	#include <coroutine.hfa>
	5
	6	ExceptionDecl( Schmilblick );
	7
	8	enum { DEATH_DECK_DIVISOR = 7 };
	9
	10	coroutine 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
	17	void players( unsigned int num );
	18	void ?{}( Player & player, PRNG & prng, unsigned int id );
	19	void start( Player & player, Player & lp, Player & rp ); // supply partners
	20	void play( Player & player, unsigned int deck );
	21	void drink( Player & player );
	22
	23	enum { RIGHT = 0, LEFT = 1 };
	24
	25	enum {
	26	MinCardsTaken = 1, // minimum number of cards allowed to draw
	27	MaxCardsTaken = 8 // maximum number of cards allowed to draw
	28	};
	29
	30	static unsigned int NumPlayersRemaining; // number of players currently in the game
	31	static unsigned int rounds; // count rounds during Schmilblick
	32
	33	static 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
	39	void 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
[3f219eb]	46	sout \| id;
[df8ba61a]	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
	72	void ?{}( Player & player, PRNG & prng, unsigned int id ) with( player ) {
	73	&player.prng = &prng; player.id = id;
	74	} // Player::Player
	75
	76	void 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
	82	void players( unsigned int num ) {
	83	NumPlayersRemaining = num;
	84	} // Player::players
	85
	86	void 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
	92	void drink( Player & player ) with( player ) { // cause partner to drink
	93	resumeAt( player, ExceptionInst( Schmilblick ) );
	94	resume( player );
	95	} // Player::drink
	96
	97	static unsigned int rightOf( unsigned int me, unsigned int total ) {
	98	return ( me + 1 ) % total;
	99	} // rightOf
	100
	101	static 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
	106	ExceptionDecl( cmd_error );
	107
	108	int 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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