Diffstat (limited to 'noncore/games/kcheckers/echeckers.cpp') (more/less context) (show whitespace changes)
| -rw-r--r-- | noncore/games/kcheckers/echeckers.cpp | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/noncore/games/kcheckers/echeckers.cpp b/noncore/games/kcheckers/echeckers.cpp new file mode 100644 index 0000000..1146059 --- a/dev/null +++ b/noncore/games/kcheckers/echeckers.cpp @@ -0,0 +1,349 @@ +// +// English Checkers + + +#include "echeckers.h" + + +/////////////////////////////////////////////////// +// +// User Functions +// +/////////////////////////////////////////////////// + + +bool ECheckers::go1(int from,int field) +{ + to=field; + + if(checkCapture1()) + { + bool capture=false; + switch(board[from]) + { + case MAN1: + if(manCapture1(from,UL,capture)) return true; + if(manCapture1(from,UR,capture)) return true; + return false; + case KING1: + if(kingCapture1(from,UL,capture)) return true; + if(kingCapture1(from,UR,capture)) return true; + if(kingCapture1(from,DL,capture)) return true; + if(kingCapture1(from,DR,capture)) return true; + return false; + } + } + else + { + switch(board[from]) + { + case MAN1: + if((to==(from-6))||(to==(from-5))) + { + board[from]=FREE; + if(to<10) board[to]=KING1; + else board[to]=MAN1; + return true; + } + return false; + case KING1: + if((to==(from-6))||(to==(from-5))|| + (to==(from+5))||(to==(from+6)) ) + { + board[from]=FREE; + board[to]=KING1; + return true; + } + return false; + } + } + return false; +} + + +bool ECheckers::checkCapture1() +{ + for(int i=6;i<48;i++) + { + switch(board[i]) + { + case MAN1: + if(board[i-6]==MAN2 || board[i-6]==KING2) + if(board[i-12]==FREE) return true; + if(board[i-5]==MAN2 || board[i-5]==KING2) + if(board[i-10]==FREE) return true; + break; + case KING1: + if(board[i-6]==MAN2 || board[i-6]==KING2) + if(board[i-12]==FREE) return true; + if(board[i-5]==MAN2 || board[i-5]==KING2) + if(board[i-10]==FREE) return true; + if(board[i+5]==MAN2 || board[i+5]==KING2) + if(board[i+10]==FREE) return true; + if(board[i+6]==MAN2 || board[i+6]==KING2) + if(board[i+12]==FREE) return true; + } + } + return false; +} + + +// Return TRUE if a course of the user true +// Return FALSE if a course of the user incorrect + +bool ECheckers::manCapture1(int from,int direction,bool &capture) +{ + int i=from+direction; + if(board[i]==MAN2 || board[i]==KING2) + { + int k=i+direction; + if(board[k]==FREE) + { + bool next=false; + int save=board[i]; + board[from]=FREE; + board[i]=NONE; + + if(k<10) + { + board[k]=KING1; + if(kingCapture1(k,direction+11,next)) {board[i]=FREE;return true;} + } + else + { + board[k]=MAN1; + if(manCapture1(k,UL,next)) {board[i]=FREE;return true;} + if(manCapture1(k,UR,next)) {board[i]=FREE;return true;} + } + + if((!next) && k==to) {board[i]=FREE;return true;} + + board[k]=FREE; + board[i]=save; + board[from]=MAN1; + capture=true; + } + } + return false; +} + + +bool ECheckers::kingCapture1(int from,int direction,bool &capture) +{ + int i=from+direction; + if(board[i]==MAN2 || board[i]==KING2) + { + int k=i+direction; + if(board[k]==FREE) + { + bool next=false; + int save=board[i]; + board[from]=FREE; + board[i]=NONE; + board[k]=KING1; + + if(direction==UL || direction==DR) + { + if(kingCapture1(k,UR,next)) {board[i]=FREE;return true;} + if(kingCapture1(k,DL,next)) {board[i]=FREE;return true;} + } + else + { + if(kingCapture1(k,UL,next)) {board[i]=FREE;return true;} + if(kingCapture1(k,DR,next)) {board[i]=FREE;return true;} + } + if(kingCapture1(k,direction,next)) {board[i]=FREE;return true;} + + if((!next) && k==to) {board[i]=FREE;return true;} + + board[k]=FREE; + board[i]=save; + board[from]=KING1; + capture=true; + } + } + return false; +} + + +//////////////////////////////////////////////////// +// +// Computer Functions +// +//////////////////////////////////////////////////// + + +void ECheckers::kingMove2(int from,int &resMax) +{ + board[from]=FREE; + + int i=from-6; + if(board[i]==FREE) + { + board[i]=KING2; + turn(resMax); + board[i]=FREE; + } + + i=from-5; + if(board[i]==FREE) + { + board[i]=KING2; + turn(resMax); + board[i]=FREE; + } + + i=from+5; + if(board[i]==FREE) + { + board[i]=KING2; + turn(resMax); + board[i]=FREE; + } + + i=from+6; + if(board[i]==FREE) + { + board[i]=KING2; + turn(resMax); + board[i]=FREE; + } + + board[from]=KING2; +} + + +bool ECheckers::checkCapture2() +{ + for(int i=6;i<48;i++) + { + switch(board[i]) + { + case MAN2: + if(board[i+5]==MAN1 || board[i+5]==KING1) + if(board[i+10]==FREE) return true; + if(board[i+6]==MAN1 || board[i+6]==KING1) + if(board[i+12]==FREE) return true; + break; + case KING2: + if(board[i-6]==MAN1 || board[i-6]==KING1) + if(board[i-12]==FREE) return true; + if(board[i-5]==MAN1 || board[i-5]==KING1) + if(board[i-10]==FREE) return true; + if(board[i+5]==MAN1 || board[i+5]==KING1) + if(board[i+10]==FREE) return true; + if(board[i+6]==MAN1 || board[i+6]==KING1) + if(board[i+12]==FREE) return true; + } + } + return false; +} + + +// Return TRUE if it is possible to capture +// Return FALSE if it is impossible to capture + +bool ECheckers::manCapture2(int from,int &resMax) +{ + bool capture=false; + + int i=from+5; + if(board[i]==MAN1 || board[i]==KING1) + { + int k=from+10; + if(board[k]==FREE) + { + int save=board[i]; + board[from]=FREE; + board[i]=NONE; + resMax--; + if(from>32) + { + board[k]=KING2; + if(!kingCapture2(k,UL,resMax)) turn(resMax,true); + } + else + { + board[k]=MAN2; + if(!manCapture2(k,resMax)) turn(resMax,true); + } + resMax++; + board[k]=FREE; + board[i]=save; + board[from]=MAN2; + capture=true; + } + } + + i=from+6; + if(board[i]==MAN1 || board[i]==KING1) + { + int k=from+12; + if(board[k]==FREE) + { + int save=board[i]; + board[from]=FREE; + board[i]=NONE; + resMax--; + if(from>32) + { + board[k]=KING2; + if(!kingCapture2(k,UR,resMax)) turn(resMax,true); + } + else + { + board[k]=MAN2; + if(!manCapture2(k,resMax)) turn(resMax,true); + } + resMax++; + board[k]=FREE; + board[i]=save; + board[from]=MAN2; + capture=true; + } + } + + if(capture) return true; + return false; +} + + +bool ECheckers::kingCapture2(int from,int direction,int &resMax) +{ + int i=from+direction; + if(board[i]==MAN1 || board[i]==KING1) + { + int k=i+direction; + if(board[k]==FREE) + { + bool capture=false; + int save=board[i]; + board[from]=FREE; + board[i]=NONE; + resMax--; + + board[k]=KING2; + if(direction==UL || direction==DR) + { + if(kingCapture2(k,UR,resMax)) capture=true; + if(kingCapture2(k,DL,resMax)) capture=true; + } + else + { + if(kingCapture2(k,UL,resMax)) capture=true; + if(kingCapture2(k,DR,resMax)) capture=true; + } + if(kingCapture2(k,direction,resMax)) capture=true; + + if(!capture) turn(resMax,true); + board[k]=FREE; + + resMax++; + board[i]=save; + board[from]=KING2; + return true; + } + } + return false; +} + |