cli-chess/pieceslogic.cpp at main · rahulpanchal0106/cli-chess · GitHub

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#include "headers/pieceslogic.h"
#include<iostream>
#include<unordered_map>
#include<vector>

using namespace std;

Pieces::Pieces(){
    unordered_map <int,char> pieces_map={
        {0,'.'},
        {1,'R'},
        {2,'N'},
        {3,'B'},
        {4,'K'},
        {5,'Q'},
        {6,'P'},
        {-1,'r'},
        {-2,'n'},
        {-3,'b'},
        {-4,'k'},
        {-5,'q'},
        {-6,'p'}
    };

    unordered_map <int,int> pieces_value={
        {0,0},
        {1,4},
        {2,3},
        {3,3},
        {4,200},
        {5,9},
        {6,1},
        {-1,4},
        {-2,3},
        {-3,3},
        {-4,200},
        {-5,9},
        {-6,1}
    };
}

bool Pieces:: validate_move(
    int &start_piece,
    int &end_piece,
    vector<vector<int>> &board,
    vector<vector<int>> &positions,
    bool p1sturn
){
    int x1=positions[0][0];
    int y1=positions[0][1];
    int x2=positions[1][0];
    int y2=positions[1][1];

    vector<vector<int>> allowed_pos = {};

    if((p1sturn==true && start_piece<0) || (p1sturn==false && start_piece>0)){
        return false;
    }

    if(start_piece==6){
        if(board[x1-1][y1]==0){
            allowed_pos.push_back({x1-1,y1});
        }
        if(x1==6 && board[x1-2][y1]==0){ // starting rank
            allowed_pos.push_back({x1-2,y1});
        }
        if(board[x1-1][y1-1]<0){
            allowed_pos.push_back({x1-1,y1-1});
        }
        if(board[x1-1][y1+1]<0){
            allowed_pos.push_back({x1-1,y1+1});
        }
    }else if(start_piece==-6){
        if(board[x1+1][y1]==0){
            allowed_pos.push_back({x1+1,y1});
        }
        if(x1==1 && board[x1+2][y1]==0){ // starting rank
            allowed_pos.push_back({x1+2,y1});
        }
        if(board[x1+1][y1-1]>0){
            allowed_pos.push_back({x1+1,y1-1});
        }
        if(board[x1+1][y1+1]>0){
            allowed_pos.push_back({x1+1,y1+1});
        }
    }else if(start_piece==1){
        //up
        for(int i=x1-1; i>=0; i--){
            if(board[i+1][y1]<0 || board[i][y1]>0){
                break;
            }
            allowed_pos.push_back({i,y1});
            cout<<i<<" ";
        }
        //down
        for(int i=x1+1; i<8; i++){
            if(board[i-1][y1]<0 || board[i][y1]>0){
                break;
            }
            allowed_pos.push_back({i,y1});
            cout<<i<<" ";
        }
        //right
        for(int j=y1+1; j<8; j++){
            if(board[x1][j-1]<0 || board[x1][j]>0){
                break;
            }
            allowed_pos.push_back({x1,j});
            cout<<j<<" ";
        }
        //left
        for(int j=y1-1; j>=0; j--){
            if(board[x1][j+1]<0 || board[x1][j]>0){
                break;
            }
            allowed_pos.push_back({x1,j});
            cout<<j<<" ";
        }
    }else if(start_piece==-1){
        //up
        for(int i=x1-1; i>=0; i--){
            if(board[i+1][y1]>0 || board[i][y1]<0){
                break;
            }
            allowed_pos.push_back({i,y1});
            cout<<i<<" ";
        }
        //down
        for(int i=x1+1; i<8; i++){
            if(board[i-1][y1]>0 || board[i][y1]<0){
                break;
            }
            allowed_pos.push_back({i,y1});
            cout<<i<<" ";
        }
        //right
        for(int j=y1+1; j<8; j++){
            if(board[x1][j-1]>0 || board[x1][j]<0){
                break;
            }
            allowed_pos.push_back({x1,j});
            cout<<j<<" ";
        }
        //left
        for(int j=y1-1; j>=0; j--){
            if(board[x1][j+1]>0 || board[x1][j]<0){
                break;
            }
            allowed_pos.push_back({x1,j});
            cout<<j<<" ";
        }

    }else if(start_piece==2 || start_piece==-2){
        //up
        if(x1-2>=0){
            if(y1-1>=0){
                allowed_pos.push_back({x1-2,y1-1});
            }
            if(y1+1<8){
                allowed_pos.push_back({x1-2,y1+1});
            }
        }
        //down
        if(x1+2<8){
            if(y1-1>=0){
                allowed_pos.push_back({x1+2,y1-1});
            }
            if(y1+1<8){
                allowed_pos.push_back({x1+2,y1+1});
            }
        }
        //left
        if(y1-2>=0){
            if(x1-1>=0){
                allowed_pos.push_back({x1-1,y1-2});
            }
            if(x1+1<8){
                allowed_pos.push_back({x1+1,y1-2});
            }
        }
        //right
        if(y1+2<8){
            if(x1-1>=0){
                allowed_pos.push_back({x1-1,y1+2});
            }
            if(x1+1<8){
                allowed_pos.push_back({x1+1,y1+2});
            }
        }
    }

    for(vector<int> position : allowed_pos){
        if(positions[1]==position){
            return true;
        }
        }
    return false;
}