Pacman Engine

#include "stdafx.h"
#include <iostream>
#include <time.h>

using namespace std;

struct vars{
    int x;
    int y;
};

int _tmain(int argc, _TCHAR* argv[]) {

    srand((int)time(NULL));
    vars size;
    vars pacman;
    vars ghosts;
    char dir;
    int numG, power, turn, lifes, who;
    char last = '\0';
    cin >> size.x >> size.y;
    getchar();
    char field[100][100] = { '\0' };

#pragma region Read Input
    for (int i = 0; i != size.x; i++) {
        for (int j = 0; j != size.y; j++) {
            field[i][j] = cin.get();
        }
        getchar();
    }
    cin >> pacman.y >> pacman.x;
    getchar();
    cin >> numG;
    getchar();
    if (numG > 0) {
        cin >> ghosts.y >> ghosts.x;
        getchar();
    }
    cin >> power;
    getchar();
    cin >> turn;
    getchar();
    cin >> lifes;
    getchar();
    cin >> who;
    getchar();
    cin >> last;
    getchar();
#pragma endregion

#pragma region Check Vars
    /*cout << "SizeX: " << size.x << " SizeY: " << size.y << "\n";
    for (int i = 0; i != size.x; i++) {
        for (int j = 0; j != size.y; j++) {
            cout << field[i][j];
        }
        cout << "\n";
    }
    cout << "PacmanX: " << pacman.x << " PacmanY: " << pacman.y << "\n";
    cout << "numG: " << numG << "\n";
    if (numG > 0) {
        cout << "GhostsX: " << ghosts.x << " GhostsY: " << ghosts.y << "\n";
    }
    cout << "Power: " << power << "\n";
    cout << "Turn: " << turn << "\n";
    cout << "Lifes: " << lifes << "\n";
    cout << "Who: " << who << "\n";
    cout << "Last: " << last << " or " << int(last) << "\n";*/

#pragma endregion

#pragma region Processing

    dir = last;
    bool right = false, left = false, up = false, down = false, hasUp = false, hasDown = false, hasLeft = false, hasRight = false;

    for (int i = 1; field[pacman.y][pacman.x - i] != 35; i++) if (field[pacman.y][pacman.x - i] == 111 || field[pacman.y][pacman.x - i] == 79) left = true;
    for (int i = 1; field[pacman.y][pacman.x + i] != 35; i++) if (field[pacman.y][pacman.x + i] == 111 || field[pacman.y][pacman.x + i] == 79) right = true;
    for (int i = 1; field[pacman.y - i][pacman.x] != 35; i++) if (field[pacman.y - i][pacman.x] == 111 || field[pacman.y - i][pacman.x] == 79) up = true;
    for (int i = 1; field[pacman.y + i][pacman.x] != 35; i++) if (field[pacman.y + i][pacman.x] == 111 || field[pacman.y + i][pacman.x] == 79) down = true;

    for (int i = pacman.y; i != 0; i--) for (int j = 0; j != size.x; j++) if (field[j][i] == 111 || field[j][i] == 79) hasUp = true;
    for (int i = pacman.y; i != size.y; i++) for (int j = 0; j != size.x; j++) if (field[j][i] == 111 || field[j][i] == 79) hasDown = true;
    for (int i = pacman.x; i != 0; i--) for (int j = 0; j != size.y; j++) if (field[j][i] == 111 || field[j][i] == 79) hasLeft = true;
    for (int i = pacman.x; i != size.x; i++) for (int j = 0; j != size.y; j++) if (field[j][i] == 111 || field[j][i] == 79) hasRight = true;

    if (field[pacman.y + 1][pacman.x] == 111 || field[pacman.y + 1][pacman.x] == 79) cout << "D";
    else if (field[pacman.y - 1][pacman.x] == 111 || field[pacman.y - 1][pacman.x] == 79) cout << "U";
    else if (field[pacman.y][pacman.x + 1] == 111 || field[pacman.y][pacman.x + 1] == 79) cout << "R";
    else if (field[pacman.y][pacman.x - 1] == 111 || field[pacman.y][pacman.x - 1] == 79) cout << "L";

    else if (right) cout << "R";
    else if (left) cout << "L";
    else if (up) cout << "U";
    else if (down) cout << "D";

    else if (last == 76 && field[pacman.y][pacman.x - 1] != 35) cout << last;
    else if (last == 85 && field[pacman.y - 1][pacman.x] != 35) cout << last;
    else if (last == 68 && field[pacman.y + 1][pacman.x] != 35) cout << last;
    else if (last == 82 && field[pacman.y][pacman.x + 1] != 35) cout << last;

    else if (last == 68 && field[pacman.y][pacman.x - 1] == 35 && field[pacman.y + 1][pacman.x] == 35) cout << "R";
    else if (last == 68 && field[pacman.y][pacman.x + 1] == 35 && field[pacman.y + 1][pacman.x] == 35) cout << "L";

    else if (last == 85 && field[pacman.y][pacman.x + 1] == 35 && field[pacman.y - 1][pacman.x] == 35) cout << "L";
    else if (last == 85 && field[pacman.y][pacman.x - 1] == 35 && field[pacman.y - 1][pacman.x] == 35) cout << "R";

    else if (last == 76 && field[pacman.y][pacman.x - 1] == 35 && field[pacman.y - 1][pacman.x] == 35) cout << "D";
    else if (last == 76 && field[pacman.y][pacman.x - 1] == 35 && field[pacman.y + 1][pacman.x] == 35) cout << "U";

    else if (last == 82 && field[pacman.y][pacman.x + 1] == 35 && field[pacman.y - 1][pacman.x] == 35) cout << "D";
    else if (last == 82 && field[pacman.y][pacman.x + 1] == 35 && field[pacman.y + 1][pacman.x] == 35) cout << "U";

    else{
        while (dir == last){
            int random = rand() % 4 + 1;
            if (random == 1) if (field[pacman.y - 1][pacman.x] != 35 && hasUp && last != 68) dir = 'U';
            if (random == 2) if (field[pacman.y + 1][pacman.x] != 35 && hasDown && last != 85) dir = 'D';
            if (random == 3) if (field[pacman.y][pacman.x - 1] != 35 && hasLeft && last != 82) dir = 'L';
            if (random == 4) if (field[pacman.y][pacman.x + 1] != 35 && hasRight && last != 76) dir = 'R';
        }
        cout << dir;
    }

#pragma endregion

    return 0;
}