mirror of
https://github.com/bobbimanners/GNO-Extras.git
synced 2024-10-31 13:07:44 +00:00
586 lines
14 KiB
Plaintext
586 lines
14 KiB
Plaintext
#include <stdio.h>
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#include <stdlib.h>
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#
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#define NIL (-1)
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#define MAXGMOV 10
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#define MAXIMOVES 1000
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char level; /*'b'=beginner, 'i'=intermediate, 'e'=expert*/
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int die1;
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int die2;
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int i;
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int j;
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int l;
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int m;
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int count;
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int red[] = {0,2,0,0,0,0,0,0,0,0,0,0,5,
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0,0,0,0,3,0,5,0,0,0,0,0,
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0,0,0,0,0,0};
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int white[] = {0,2,0,0,0,0,0,0,0,0,0,0,5,
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0,0,0,0,3,0,5,0,0,0,0,0,
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0,0,0,0,0,0};
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int probability[] = {0,11,12,13,14,15,16,
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06,05,04,03,02,01};
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int imoves;
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int goodmoves[MAXGMOV] ;
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int probmoves[MAXGMOV] ;
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struct {int pos[4],mov[4];} moves[MAXIMOVES] ;
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int main(int argc, char *argv[])
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{
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int t,k,n,go[5];
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char s[100];
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go[5]=NIL;
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srand();
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printf( "Do you want instructions? Type 'y' for yes,\n");
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printf( "anything else means no.?? ");
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getstr(s);
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if(*s=='y')instructions();
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printf( "Choose the level of your oppponent.\n");
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printf( "Type 'b' for beginner, or 'i' for intermediate.\n");
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printf( "Anything else gets you an expert.?? ");
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level='e';
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getstr(s);
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if(*s=='b')level='b';
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else if(*s=='i')level='i';
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printf( "You will play red. Do you wan't to move first?\n");
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printf( "Type 'y' for yes, anything else means no.?? ");
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getstr(s);
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if(*s=='y')goto nowhmove;
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whitesmv:
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roll();
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printf( "white rolls %d,%d\n",die1,die2);
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printf( "white's move is:");
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if(nextmove(white,red)==NIL)goto nowhmove;
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if(piececount(white,0,24)==0){
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printf( "White wins\n");
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printf( "Aren't you ashamed. You've been beaten by a computer.\n");
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exit();
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}
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nowhmove:
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prtbrd();
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roll();
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retry:
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printf( "your roll is %d, %d\n",die1,die2);
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printf( "your move, please?? ");
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getstr(s);
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if(*s==0){
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printf( "red's move skipped\n");
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goto whitesmv;
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}
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n=sscanf(s,"%d%d%d%d%d",&go[0],&go[1],&go[2],&go[3],&go[4]);
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if((die1!=die2&&n>2)||n>4){
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printf( "you've made too many moves\n");
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goto retry;
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}
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go[n]=NIL;
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if(*s=='-'){
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go[0]= -go[0];
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t=die1;
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die1=die2;
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die2=t;
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}
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for(k=0;k<n;k++){
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if(0<=go[k] && go[k]<=24)continue;
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else{
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printf( "move %d is illegal\n",go[k]);
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goto retry;
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}
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}
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if(play(red,white,go))goto retry;
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if(piececount(red,0,24)==0){
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printf( "Red wins.\n");
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printf( "Congratulations! You have just defeated a dumb machine.\n");
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exit();
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}
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goto whitesmv;
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}
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getstr(s)
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char *s;
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{
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while((*s=getchar())!='\n')s++;
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*s=0;
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}
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play(player,playee,pos)
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int *player,*playee,pos[];
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{
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int k,n,die,ipos;
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for(k=0;k<player[0];k++){ /*blots on player[0] must be moved first*/
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if(pos[k]==NIL)break;
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if(pos[k]!=0){
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printf( "piece on position 0 must be moved first\n");
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return(-1);
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}
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}
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for(k=0;(ipos=pos[k])!=NIL;k++){
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die=k?die2:die1;
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n=25-ipos-die;
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if(player[ipos]==0)goto badmove;
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if(n>0&&playee[n]>=2)goto badmove;
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if(n<=0){
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if(piececount(player,0,18)!=0)goto badmove;
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if((ipos+die)!=25&&
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piececount(player,19,24-die)!=0)goto badmove;
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}
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player[ipos]--;
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player[ipos+die]++;
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}
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for(k=0;pos[k]!=NIL;k++){
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die=k?die2:die1;
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n=25-pos[k]-die;
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if(n>0 && playee[n]==1){
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playee[n]=0;
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playee[0]++;
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}
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}
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return(0);
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badmove:
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printf( "Move %d is not legal.\n",ipos);
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while(k--){
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die=k?die2:die1;
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player[pos[k]]++;
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player[pos[k]+die]--;
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}
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return(-1);
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}
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nextmove(player,playee)
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int *player,*playee;
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{
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int k;
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imoves=0;
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movegen(player,playee);
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if(die1!=die2){
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k=die1;
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die1=die2;
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die2=k;
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movegen(player,playee);
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}
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if(imoves==0){
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printf( "roll was %d,%d; no white move possible\n",die1,die2);
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return(NIL);
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}
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k=strategy(player,playee); /*select kth possible move*/
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prtmov(k);
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update(player,playee,k);
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return(0);
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}
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prtmov(k)
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int k;
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{
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int n;
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if(k==NIL)printf( "no move possible\n");
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else for(n=0;n<4;n++){
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if(moves[k].pos[n]==NIL)break;
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printf( " %d, %d",25-moves[k].pos[n],moves[k].mov[n]);
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}
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printf( "\n");
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}
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update(player,playee,k)
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int *player,*playee,k;
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{
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int n,t;
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for(n=0;n<4;n++){
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if(moves[k].pos[n]==NIL)break;
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player[moves[k].pos[n]]--;
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player[moves[k].pos[n]+moves[k].mov[n]]++;
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t=25-moves[k].pos[n]-moves[k].mov[n];
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if(t>0 && playee[t]==1){
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playee[0]++;
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playee[t]--;
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}
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}
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}
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piececount(player,startrow,endrow)
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int *player,startrow,endrow;
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{
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int sum;
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sum=0;
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while(startrow<=endrow)
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sum=+player[startrow++];
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return(sum);
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}
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/*
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prtmovs()
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{
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int i1,i2;
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printf( "possible moves are\n");
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for(i1=0;i1<imoves;i1++){
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printf( "\n%d",i1);
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for(i2=0;i2<4;i2++){
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if(moves[i1].pos[i2]==NIL)break;
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printf( "%d, %d",moves[i1].pos[i2],moves[i1].mov[i2]);
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}
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}
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printf( "\n");
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}
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*/
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roll()
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{
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extern int die1,die2;
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die1=(rand()>>8)%6+1;
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die2=(rand()>>8)%6+1;
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}
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movegen(mover,movee)
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int *mover,*movee;
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{
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extern int i,j,l,m,count;
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extern int die1,die2;
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int k;
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for(i=0;i<=24;i++){
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count=0;
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if(mover[i]==0)continue;
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if((k=25-i-die1)>0&&movee[k]>=2)
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if(mover[0]>0)break;
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else continue;
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if(k<=0){
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if(piececount(mover,0,18)!=0)break;
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if((i+die1)!=25&&
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piececount(mover,19,24-die1)!=0)break;
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}
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mover[i]--;
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mover[i+die1]++;
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count=1;
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for(j=0;j<=24;j++){
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if(mover[j]==0)continue;
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if((k=25-j-die2)>0&&movee[k]>=2)
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if(mover[0]>0)break;
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else continue;
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if(k<=0){
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if(piececount(mover,0,18)!=0)break;
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if((j+die2)!=25&&
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piececount(mover,19,24-die2)!=0)break;
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}
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mover[j]--;
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mover[j+die2]++;
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count=2;
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if(die1!=die2){
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moverecord(mover);
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if(mover[0]>0)break;
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else continue;
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}
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for(l=0;l<=24;l++){
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if(mover[l]==0)continue;
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if((k=25-l-die1)>0&&movee[k]>=2)
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if(mover[0]>0)break;
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else continue;
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if(k<=0){
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if(piececount(mover,0,18)!=0)break;
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if((l+die2)!=25&&
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piececount(mover,19,24-die1)!=0)break;
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}
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mover[l]--;
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mover[l+die1]++;
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count=3;
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for(m=0;m<=24;m++){
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if(mover[m]==0)continue;
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if((k=25-m-die1)>=0&&movee[k]>=2)
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if(mover[0]>0)break;
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else continue;
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if(k<=0){
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if(piececount(mover,0,18)!=0)break;
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if((m+die2)!=25&&
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piececount(mover,19,24-die1)!=0)break;
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}
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count=4;
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moverecord(mover);
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if(mover[0]>0)break;
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}
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if(count==3)moverecord(mover);
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else{
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mover[l]++;
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mover[l+die1]--;
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}
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if(mover[0]>0)break;
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}
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if(count==2)moverecord(mover);
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else{
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mover[j]++;
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mover[j+die1]--;
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}
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if(mover[0]>0)break;
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}
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if(count==1)moverecord(mover);
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else{
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mover[i]++;
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mover[i+die1]--;
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}
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if(mover[0]>0)break;
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}
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}
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moverecord(mover)
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int *mover;
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{
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extern int i,j,l,m,imoves,count;
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int t;
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if(imoves>=MAXIMOVES)goto undo;;
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for(t=0;t<=3;t++)
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moves[imoves].pos[t]= NIL;
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switch(count){
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case 4:
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moves[imoves].pos[3]=m;
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moves[imoves].mov[3]=die1;
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case 3:
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moves[imoves].pos[2]=l;
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moves[imoves].mov[2]=die1;
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case 2:
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moves[imoves].pos[1]=j;
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moves[imoves].mov[1]=die2;
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case 1:
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moves[imoves].pos[0]=i;
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moves[imoves].mov[0]=die1;
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imoves++;
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}
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undo:
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switch(count){
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case 4:
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break;
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case 3:
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mover[l]++;
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mover[l+die1]--;
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break;
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case 2:
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mover[j]++;
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mover[j+die2]--;
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break;
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case 1:
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mover[i]++;
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mover[i+die1]--;
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}
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}
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strategy(player,playee)
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int *player,*playee;
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{
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extern char level;
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int k,n,nn,bestval,moveval,prob;
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n=0;
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if(imoves==0)return(NIL);
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goodmoves[0]=NIL;
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bestval= -32000;
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for(k=0;k<imoves;k++){
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if((moveval=eval(player,playee,k,&prob))<bestval)continue;
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if(moveval>bestval){
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bestval=moveval;
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n=0;
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}
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if(n<MAXGMOV){
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goodmoves[n]=k;
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probmoves[n++]=prob;
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}
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}
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if(level=='e' && n>1){
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nn=n;
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n=0;
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prob=32000;
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for(k=0;k<nn;k++){
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if((moveval=probmoves[k])>prob)continue;
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if(moveval<prob){
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prob=moveval;
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n=0;
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}
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goodmoves[n]=goodmoves[k];
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probmoves[n++]=probmoves[k];
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}
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}
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return(goodmoves[(rand()>>4)%n]);
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}
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eval(player,playee,k,prob)
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int *player,*playee,k,*prob;
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{
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extern char level;
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int newtry[31],newother[31],*r,*q,*p,n,sum,first;
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int ii,lastwhite,lastred;
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*prob=sum=0;
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r=player+25;
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p=newtry;
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q=newother;
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while(player<r){
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*p++= *player++;
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*q++= *playee++;
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}
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q=newtry+31;
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for(p=newtry+25;p<q;) *p++ = 0; /*zero out spaces for hit pieces*/
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for(n=0;n<4;n++){
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if(moves[k].pos[n]==NIL)break;
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newtry[moves[k].pos[n]]--;
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newtry[ii=moves[k].pos[n]+moves[k].mov[n]]++;
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if(ii<25 && newother[25-ii]==1){
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newother[25-ii]=0;
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newother[0]++;
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if(ii<=15 && level=='e')sum++; /*hit if near other's home*/
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}
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}
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for(lastred=0;newother[lastred]==0;lastred++);
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for(lastwhite=0;newtry[lastwhite]==0;lastwhite++);
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lastwhite=25-lastwhite;
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if(lastwhite<=6 && lastwhite<lastred)sum=1000;
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if(lastwhite<lastred && level=='e'
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&& lastwhite>6){ /*expert's running game.
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First priority to get all
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pieces into white's home*/
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for(sum=1000;lastwhite>6;lastwhite--)
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sum=sum-lastwhite*newtry[25-lastwhite];
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}
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for(first=0;first<25;first++)
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if(newother[first]!=0)break; /*find other's first piece*/
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q=newtry+25;
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for(p=newtry+1;p<q;)if(*p++ > 1)sum++; /*blocked points are good*/
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if(first>5){ /*only stress removing pieces if homeboard
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cannot be hit
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*/
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q=newtry+31;
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p=newtry+25;
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for(n=6;p<q;n--)
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sum=+ *p++ * n; /*remove pieces, but just barely*/
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}
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if(level!='b'){
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r=newtry+25-first; /*singles past this point can't be hit*/
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for(p=newtry+7;p<r;)
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if(*p++ == 1)sum--; /*singles are bad after 1st 6 points
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if they can be hit*/
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q=newtry+3;
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for(p=newtry;p<q;)sum=- *p++; /*bad to be on 1st three points*/
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}
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for(n=1;n<=4;n++)
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*prob=+ n*getprob(newtry,newother,6*n-5,6*n);
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return(sum);
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}
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instructions()
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{
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printf( "To play backgammon, type the numbers of the points\n");
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printf( "from which pieces are to be moved. Thus, if the\n");
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printf( "roll is '3,5', typing '2 6' will move a piece\n");
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printf( "from point 2 three spaces to point 5,\n");
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printf( "and a piece from point 6 forward to\n");
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printf( "point 11. If the moves must be made in the\n");
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printf( "opposite order, the first character typed must\n");
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printf( "be a minus ('-'). Thus, typing\n");
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printf( "'-2 6' moves the piece on point 2\n");
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printf( "by 5, and the piece on point 6 by 3.\n");
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printf( "If you want to move a single piece several times,\n");
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printf( "the sequence of points from which it is to be\n");
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printf( "moved must be typed. Thus '14 17' will move\n");
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printf( "a piece from point 14 to point 17 and thence to\n");
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printf( "to point 22.\n");
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printf( "If a double is rolled, you should type four numbers.\n");
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printf( "Red pieces that have been removed from the board by\n");
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printf( "being hit by white are on point 0 and\n");
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printf( "must be brought in before any other move can be made.\n");
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printf( "White pieces that are hit are removed to point 25.\n");
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printf( "You will not be allowed to make an illegal move, or\n");
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printf( "to make too many moves. However, if you make too\n");
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printf( "few moves, the program does not care. In particular\n");
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printf( "you may skip your turn by typing a 'new-line'\n");
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printf( "all by itself.\n\n");
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}
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getprob(player,playee,start,finish)
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int *player,*playee,start,finish;
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{ /*returns the probability (times 102) that any
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pieces belonging to 'player' and lying between
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his points 'start' and 'finish' will be hit
|
|
by a piece belonging to playee
|
|
*/
|
|
int k,n,sum;
|
|
sum=0;
|
|
for(;start<=finish;start++){
|
|
if(player[start]==1){
|
|
for(k=1;k<=12;k++){
|
|
if((n=25-start-k)<0)break;
|
|
if(playee[n]!=0)sum=+probability[k];
|
|
}
|
|
}
|
|
}
|
|
return(sum);
|
|
}
|
|
prtbrd()
|
|
{
|
|
int k;
|
|
printf( "White's Home\n");
|
|
for(k=1;k<=6;k++)
|
|
printf( "%4d",k);
|
|
printf( " ");
|
|
for(k=7;k<=12;k++)printf( "%4d",k);
|
|
putchar('\r' );
|
|
for(k=1;k<=54;k++)putchar('_' );
|
|
putchar('\n' );
|
|
numline(red,white,1,6);
|
|
printf( " ");
|
|
numline(red,white,7,12);
|
|
putchar('\n' );
|
|
colorline(red,'R',white,'W',1,6);
|
|
printf( " ");
|
|
colorline(red,'R',white,'W',7,12);
|
|
putchar('\n' );
|
|
if(white[0]!=0)printf( "%28dW\n",white[0]);
|
|
else putchar('\n' );
|
|
if(red[0]!=0)printf( "%28dR\n",red[0]);
|
|
else putchar('\n' );
|
|
colorline(white,'W',red,'R',1,6);
|
|
printf( " ");
|
|
colorline(white,'W',red,'R',7,12);
|
|
putchar('\n' );
|
|
numline(white,red,1,6);
|
|
printf( " ");
|
|
numline(white,red,7,12);
|
|
putchar('\r' );
|
|
for(k=1;k<=54;k++)putchar('_' );
|
|
putchar('\n' );
|
|
for(k=24;k>=19;k--)printf( "%4d",k);
|
|
printf( " ");
|
|
for(k=18;k>=13;k--)printf( "%4d",k);
|
|
printf( "\nRed's Home\n\n\n\n\n");
|
|
}
|
|
numline(upcol,downcol,start,fin)
|
|
int *upcol,*downcol,start,fin;
|
|
{
|
|
int k,n;
|
|
for(k=start;k<=fin;k++){
|
|
if((n=upcol[k])!=0 || (n=downcol[25-k])!=0)printf( "%4d",n);
|
|
else printf( " ");
|
|
}
|
|
}
|
|
colorline(upcol,c1,downcol,c2,start,fin)
|
|
int *upcol,*downcol,start,fin;
|
|
char c1,c2;
|
|
{
|
|
int k;
|
|
char c;
|
|
for(k=start;k<=fin;k++){
|
|
c=' ';
|
|
if(upcol[k]!=0)c=c1;
|
|
if(downcol[25-k]!=0)c=c2;
|
|
printf( " %c",c);
|
|
}
|
|
}
|
|
|
|
int rrno = 0;
|
|
|
|
srand(){
|
|
rrno = _look( 0x40000 );
|
|
_store( 0x40000, rrno+1 );
|
|
}
|
|
|
|
rand(){
|
|
rrno *= 0106273;
|
|
rrno += 020202;
|
|
return( rrno & 077777 );
|
|
}
|
|
|
|
_look(p) int *p; {
|
|
return( *p );
|
|
}
|
|
|
|
_store( p, numb ) int *p; {
|
|
*p = numb;
|
|
}
|