144 lines
3.4 KiB
C++
144 lines
3.4 KiB
C++
#include <iostream>
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#include <vector>
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#include <stdlib.h>
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#include <stdio.h>
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#include "Engine.h"
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Engine::Engine(){
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Board* brd = new Board();
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b = brd;
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}
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void Engine::startGame(){
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cout<<"WELCOME\n";
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cout<<"1. Play against AI?\n";
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cout<<"2. Play against a human?\n";
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cout<<"Enter choice: \n";
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int choice = -1;
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cin >> choice;
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cout << "OK" << endl;
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string move;
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bool gameOver = false;
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vector<Board> record;
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b->snapshot(record, *b);
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while (gameOver != true)
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{
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gameOver = b->isGameOver();
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while(b->getTurn() == 'O' && !b->isValid())
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{
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b->displayBoard();
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cout<<"\nEnter command: ";
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cin>>move;
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cout << "\n";
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b->interpret(move, *b);
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if(b->isValid()) {
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b->changeTurns();
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b->setValidFalse();
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}
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}
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//if(b->isValid()) cout << b->getTurn();
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while(b->getTurn() == 'X' )
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{
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AI();
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}
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gameOver = b->isGameOver();
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b->setValidFalse();
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b->snapshot(record, *b);
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}
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}
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void Engine::easyAI()
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{
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vector<moves> listOfMoves = b->viewPossibleMoves();
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/*
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for(int x = 0; x < listOfMoves.size(); ++x) {
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cout << listOfMoves[x].row << " " << listOfMoves[x].column << " " << listOfMoves[x].moveType << "\n\n";
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}
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*/
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srand(time(NULL));
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int randomChoice = rand() % (listOfMoves.size()-1) - 0;
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//int temp = randomChoice;
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cout << "easy AI move: " << listOfMoves[randomChoice].row << listOfMoves[randomChoice].column << listOfMoves[randomChoice].moveType << "\n";
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b->move(listOfMoves[randomChoice]);
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b->changeTurns();
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}
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void Engine::AI(){
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//cout << "----------------------BEGIN AI FUNCTION----------------------\n";
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vector<moves> listOfMoves = b->viewPossibleMoves();
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Board* temp = new Board(*b);
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//probably not needed, check later
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/*
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if (b->getTurn() != 'X'){
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cout << "a changing of turns is needed. \n";
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b->changeTurns();
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}
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*/
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//only doing 1 branch right now because testing
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/*for (int i = 0; i < listOfMoves.size(); ++i){
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minMax(b, listOfMoves[i]);
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}*/
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b->move(minMax(temp, listOfMoves[0], 0, 0));
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b->changeTurns();
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//verification of correct turn
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/*
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if (b->getTurn() != 'O'){
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cout << "ERROR in Engine::AI: b is on the wrong turn. \n";
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}
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*/
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b->displayBoard();
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//cout << "----------------------END AI FUNCTION----------------------\n";
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}
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moves Engine::minMax(Board* temp, moves m, int c, int r){
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//testing purposes only, c = finite depth
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//cout << "c: " << c << "\n\n";
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//cout << "current turn: " << temp->getTurn() << "\n";
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vector<moves> listOfMoves = temp->viewPossibleMoves();
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//cout << "listOfMoves size: " << listOfMoves.size() << "\n\n";
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/*
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if (c > 5){
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return m;
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}
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*/
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if (temp->isGameOver() == true){
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//cout << "END OF PATH REACHED\n";
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return m;
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}
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else {
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if(temp->getPiece(8 - m.row, m.column)->getType() == temp->getTurn() && temp->isThisMovePossible(8 - m.row, m.column, m.moveType)){
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//cout << "piece has been moved in minMax\n";
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temp->move(m);
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temp->evaluate('X', 'O');
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temp->changeTurns();
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//temp->displayBoard();
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}
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else {
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//cout << m.row << " " << m.column << "\n\n";
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m = minMax(temp, listOfMoves[++r], c, r);
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}
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//temp->displayBoard();
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vector<moves> listOfMoves = temp->viewPossibleMoves();
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//cout << "listOfMoves size: " << listOfMoves.size() << "\n\n";
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minMax(temp, listOfMoves[0], 0, 0);
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//testing
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return m;
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}
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}
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