我目前正在尝试在 linux 终端上编译和链接我的 C++ 文件。我运行的命令是：
g++ -o gameplay gamePlay.cpp player.cpp main.cpp display.cpp -lcurses
该命令似乎可以完美地编译所有内容，但是一旦它尝试链接事物，我就会得到 2 个错误。
undefined reference to 'gamePlay::deal(std::vector<card, std::allocator<card> >, std::vector<player, std::alloator<player> >)'
undefined reference to 'gamePlay::score(player)'
下面是我的 gamePlay.CPP 文件。我真的很迷茫，任何帮助将不胜感激！
#include "gamePlay.h"
#include <cstdlib>
#include <sstream>
int gamePlay::compareCenter(int leadplayer){
int highest = center[leadplayer].getCardNum();
if(center[leadplayer].getCardNum() == 1)
highest = center[leadplayer].getCardNum() + 13;
int suit = center[leadplayer].getSuit();
int player = leadplayer;
for(int i = leadplayer+1; i < leadplayer+4; i++)
{
if((suit != 1) && (center[i%4].getSuit() == 1))
{
player = i%4;
suit = 1;
highest = center[i%4].getCardNum();
}
else if(suit == center[i%4].getSuit())
if(center[i].getCardNum() == 1){
player = i % 4;
highest = center[i].getCardNum() + 13;
}
if(highest < center[i%4].getCardNum())
{
player = i%4;
highest = center[i%4].getCardNum();
}
}
players.at(player).setTricksTaken(players.at(player).getTricksTaken()+1);
return player;
}
vector <card> createDeck() {
//Create the Deck and create each suit by calling define cards.
vector <card> deck;
for(int i = 1; i <= 4; i++){
for(int j = 1; j <= 13; j++){
card newCard (i,j);
deck.push_back(newCard);
}
}
random_shuffle (deck.begin(), deck.end());
return deck;
}
void gamePlay::deal(vector <card> &deck, vector <player> players){
for(int j = 0; j<4; j++){
for(int i = 0; i<13; i++){
players.at(j).addCard(deck.at(0));
deck.erase(deck.begin());
}
}
}
bool containSuit(card lead, player players){
bool suit = false;
for(int i = 0; i < players.getHand().size(); i++){
if(lead.getSuit() == players.getHand().at(i).getSuit())
suit = true;
}
return suit;
}
bool gamePlay::onlySpade(player play){
for(int i = 0; i<play.getHand().size(); i++){
if(play.getHand().at(i).getSuit()!=1)
return false;
}
return true;
}
int gamePlay::handCheck(int xevent, int yevent, vector <player> players, int trickStart){
for(int i = 1; i < 14; i++){
if(xevent<(i*6) && yevent>17 && yevent<23 && players.at(0).getHand().at(i-1).getSuit() != 0 && players.at(0).getHand().at(i- 1).getCardNum() != 0){
card playedCard = players.at(0).getHand().at(i-1);
//first check to find card on display
//check to see if leading or not
//if leading use spadesBroken function
//if not leading use contains suit function
if(trickStart==0 && !getSpadesBroken()){
if(onlySpade(players.at(0)))
return i;
else if(playedCard.getSuit() != 1)
return i;
else
return NULL;
}
if(trickStart == 0 && getSpadesBroken())
return i;
if(trickStart > 0 && containSuit(center[trickStart],players.at(0))){
if(playedCard.getSuit()==center[trickStart].getSuit())
return i;
}
if(trickStart > 0 && !containSuit(center[trickStart],players.at(0)))
return i;
else
return NULL;
}
}
}
void gamePlay::displayHand(){
int offset = 0;
for(int i =0; i<players.at(0).getHand().size(); i++){
monitor.displayCard(offset, 18, players.at(0).getHand().at(i).getSuit(), players.at(0).getHand().at(i).getCardNum(), 0);
offset+=6;
}
}
void gamePlay::humanPlay(int trickStart){
int xevent, yevent;
int key = monitor.captureInput();
for(;;){
mvprintw(8,26,"Please choose a card to play.");
// if a mouse event occurred
if (key == -1) {
xevent = monitor.getMouseEventX();
yevent = monitor.getMouseEventY();
int handCh = handCheck(xevent, yevent, players, trickStart);
if(handCh != NULL){
card played = players.at(0).getHand().at(handCh-1);
players.at(0).getHand().at(handCh-1).setCardNum(0);
players.at(0).getHand().at(handCh-1).setSuit(0);
center[0]= played;
monitor.displayCard(34, 11, center[0].getSuit(), center[0].getCardNum(), 0);
displayHand();
break;
}
}
}
}
void gamePlay::CPUplay(int trickStart, int CPU){
bool goodCard = false;
card playedCard =players.at(CPU).getHand().at(0);
int i;
for(i = 0; i < players.at(CPU).getHand().size(); i++){
playedCard = players.at(CPU).getHand().at(i);
//check to see if leading or not
//if leading use spadesBroken function
//if not leading use contains suit function
if(trickStart==CPU && !getSpadesBroken()){
if(onlySpade(players.at(CPU)))
break;
if(playedCard.getSuit()!=1)
break;
}
if(trickStart == CPU && getSpadesBroken())
break;
if(trickStart != CPU && containSuit(center[trickStart], players.at(CPU))){
if(playedCard.getSuit()==center[trickStart].getSuit())
break;
}
if(trickStart != CPU && !containSuit(center[trickStart], players.at(CPU)))
break;
}
players.at(CPU).getHand().at(i).setCardNum(0);
players.at(CPU).getHand().at(i).setSuit(0);
center[CPU]= playedCard;
if(CPU==1)
monitor.displayCard(29, 7, center[CPU].getSuit(), center[CPU].getCardNum(), 0);
if(CPU==2)
monitor.displayCard(39, 2, center[CPU].getSuit(), center[CPU].getCardNum(), 0);
if(CPU==3)
monitor.displayCard(49, 7, center[CPU].getSuit(), center[CPU].getCardNum(), 0);
}
void gamePlay::score(player play){
int trickOver = play.getBid()-play.getTricksTaken(); // Calculate the difference between bid and actually taken.
//Bidding Double Nil (if gets it 200 points other wise -200 points)
if(play.getDoubleNil()){
if(play.getTricksTaken()==0) //player did get Double Nil successfully
play.setScore(play.getScore()+200); // add 200 points
else
play.setScore(play.getScore()-200);
}
if(play.getBid()==0){ //Bidding Nil (if gets it 100 points other wise -100 points)
if(play.getTricksTaken()==0) //player did get Nil successfully
play.setScore(play.getScore()+100); //add 100 points
else //player didnt get Nil
play.setScore(play.getScore()-100); //take away 100 points
}
if(trickOver>0){ //player bids more than number of tricks won
play.setScore((trickOver*-10)); //decrease score by 10 poitns for every overtrick
}
if(trickOver<0){ //player bids less then number of tricks won
play.setSandBag(play.getSandBag() + 1); //increase sandbag by 1
play.setScore((trickOver*(-1))+(10*(play.getBid()))); //increase 10 points per trick bid on and 1 point per trick over
}
if(play.getSandBag()>10){ //check for sandbagging
play.setScore(play.getScore()-100);
}
play.setBid(NULL); //reset players bid to NULL
play.setDoubleNil(false); //Player has not yet bid double NILL.
}
void gamePlay::runGame(){
for(int i = 0; i<4; i++){ //Creates 4 players with hands included
player play;
players.push_back(play);
}
int count = 0;
int handStart = 0;
while(players.at(0).getScore()<500 || players.at(1).getScore()<500 || players.at(2).getScore()<500 || players.at(3).getScore()<500)
{
int xevent;
int yevent;
for(;;){
mvprintw(3,2,"Click here to bid Double Nil or type out your bid now.");
int key = monitor.captureInput();
monitor.drawBox(7, 4, 3, 2, 0);
monitor.drawBox(7, 4, 3, 2, 0);
if (key == -1) {
xevent = monitor.getMouseEventX();
yevent = monitor.getMouseEventY();
break;
}
if (key > 0){
stringstream messageString;
messageString.str("");
messageString << "Your bid is now: " << key;
monitor.bannerBottom(messageString.str());
players.at(0).setBid(key);
break;
}
}
if((xevent>=7 && xevent<=10)&&(yevent>=4 && yevent <=6)){
players.at(0).setDoubleNil(true);
}
vector <card> deck = createDeck();
deal(deck, players);
displayHand();
int trickStart = handStart;
int count = 0;
while(count<13){
switch (trickStart)
{
case 0: humanPlay(trickStart);
CPUplay(trickStart,1);
CPUplay(trickStart,2);
CPUplay(trickStart,3);
case 1: CPUplay(trickStart,3);
humanPlay(trickStart);
CPUplay(trickStart,1);
CPUplay(trickStart,2);
case 2: CPUplay(trickStart,2);
CPUplay(trickStart,3);
humanPlay(trickStart);
CPUplay(trickStart,1);
case 3: CPUplay(trickStart,1);
CPUplay(trickStart,2);
CPUplay(trickStart,3);
humanPlay(trickStart);
}
trickStart = compareCenter(trickStart);
}
for(int n =0; n<4;n++)
score(players.at(n));
handStart = (handStart +1) % 4;
}
}
这也是我的 card.h 文件
using namespace std;
class card { //Create cards for deck
int cardSuit;
int cardNum;
public:
int getSuit() {return cardSuit;}
int getCardNum() {return cardNum;}
void setSuit(int a){ cardSuit = a;}
void setCardNum(int a){cardNum = a;}
card (int suit, int number){cardSuit = suit; cardNum = number;}
card (void){cardSuit = 0; cardNum= 0;}
};