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/*
21点游戏
*/
#include <iostream>
#include <cstdlib>
#include <algorithm>
using namespace std;
const int NUM_CARDS = 52;
const char suit[4] = { 'H','S','D','C' };
const char* type[13] ={ "2","3","4","5","6","7","8","9","10","J","Q","K","A" };
const int value[13] = { 2,3,4,5,6,7,8,9,10,10,10,10,11 };
void shuffleCards(int cards[]);//洗牌
void showCard(int id);//显示牌
int cardValue(int id);//牌的值
void showHand(int hand[], int numCards);//显示手上的牌
int scoring(int hand[], int numCards);//计算分数
//////////////////////////////////////////////////////////////////////////
int main(int argc, char* argv[])
{
if (argc < 2) {
cout << "Something wrong - Please input the seed value." << endl;
return 1;//保证在运行exe的时候后面输入随机数种子的值
}
int seed = atoi(argv[1]);
srand(seed);
int cards[52];//存储着所有的牌
int dealerHand[9];//dealer手中的牌
int playerHand[9];//player手中的牌
char playFlag = 'y';//如果输入y继续，否则退出
while (playFlag == 'y')
{
shuffleCards(cards);//洗牌
int dealerNumCards = 0;//在手中的牌数
int playerNumCards = 0;
int deckNumCards = 0;//在deck中牌的序号
playerHand[playerNumCards++] = cards[deckNumCards++];//连发两张牌
dealerHand[dealerNumCards++] = cards[deckNumCards++];
playerHand[playerNumCards++] = cards[deckNumCards++];
dealerHand[dealerNumCards++] = cards[deckNumCards++];
cout << "Dealer:" << "? ";//显示dealer的牌，第一张打？
showCard(dealerHand[1]);
cout << endl;
cout << "Player:";//显示player的牌
showHand(playerHand, 2);
cout << endl;
while (true)
{
if (scoring(playerHand, playerNumCards)>21)
{
break; //如果大于21，结束
}
else if (scoring(playerHand, playerNumCards) == 21)
{
while (scoring(dealerHand, dealerNumCards)<17)
{
dealerHand[dealerNumCards++] = cards[deckNumCards++];//继续发牌
}
break;
}
else {
cout << "Type 'h' to hit and 's' to stay:" << endl;
char input;
cin >> input;
if (input == 'h')
{
playerHand[playerNumCards++] = cards[deckNumCards++];//游戏继续
cout << "Player:";
showHand(playerHand, playerNumCards);//显示player得到的这张牌
cout << endl;
}
else if (input == 's')
{
while (scoring(dealerHand, dealerNumCards)<17)
{
dealerHand[dealerNumCards++] = cards[deckNumCards++]; //持续给dealer发牌，直到结束条件出现
}
break;
}
}
}
cout << "Dealer: ";
showHand(dealerHand, dealerNumCards);
cout << endl;
/*
判断谁赢
*/
if (scoring(playerHand, playerNumCards)>21) // player busts
{
cout << "Player busts \nLose\n";
cout << scoring(playerHand, playerNumCards) << " ";
cout << scoring(dealerHand, dealerNumCards) << endl;
}
else if (scoring(dealerHand, dealerNumCards)>21)// dealer busts
{
cout << "Dealer busts \nWin\n";
cout << scoring(playerHand, playerNumCards) << " ";
cout << scoring(dealerHand, dealerNumCards) << endl;
}
else if (scoring(playerHand, playerNumCards)> scoring(dealerHand, dealerNumCards))// player win
{
cout << "Win ";
cout << scoring(playerHand, playerNumCards) << " ";
cout << scoring(dealerHand, dealerNumCards) << endl;
}
else if (scoring(playerHand, playerNumCards)< scoring(dealerHand, dealerNumCards)) //dealer win
{
cout << "Lose ";
cout << scoring(playerHand, playerNumCards) << " ";
cout << scoring(dealerHand, dealerNumCards) << endl;
}
else //tie
{
cout << "Tie ";
cout << scoring(playerHand, playerNumCards) << " ";
cout << scoring(dealerHand, dealerNumCards) << endl;
}
//是否继续游戏
cout << "\nPlay again? [y / n]\n";
cin >> playFlag;
}
return 0;
}
//////////////////////////////////////////////////////////////////////////
//洗牌
void shuffleCards(int cards[])
{
for (int j = 0; j<52; j++) //将牌初始化
{
cards[j] = j;
}
for (int i = 51; i >= 1; i--)
{
int j = rand() % (i + 1);//通过交换来洗牌
int temp;
temp = cards[i];
cards[i] = cards[j];
cards[j] = temp;
}
}
//将牌显示出来，显示形式如：K-C (King of clubs), 2-H (2 of hearts)
//前面是具体的数字： 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K, A
//后面是类型: H, D, C, S
void showCard(int id)
{
cout << type[id % 13] << "-" << suit[id / 13] << " ";
}
//返回牌的值，ACE的值姑且为11，后面会根据总的分数进行处理
int cardValue(int id)
{
return value[id % 13];
}
//将手中的牌显示出来
void showHand(int hand[], int numCards)
{
for (int i = 0; i < numCards; i++)
{
showCard(hand[i]);
}
}
//计算总的分数，如果超过21，依次查找ACE，并在总的分数上减10
int scoring(int hand[], int numCards)
{
int scoresSum = 0;
for (int i = 0; i < numCards; i++)
{
scoresSum = scoresSum + cardValue(hand[i]);
}
for (int i = 0; i< numCards; i++)
{
if (cardValue(hand[i]) == 11 && scoresSum > 21)
{
scoresSum = scoresSum - 10;//不会改变ACE的值，而是改变总的分数
}
}
return scoresSum;
}