Create movement within a vector

[Jake123456]

Hi I am new to C++ and was wondering how to create movement of the "@" symbol within the vector. What I wanted the current code (shown below) to do is to insert the 3 symbols into the vector but judging on what I can see it seems to be simply adding it to the line and therefore extending the size of the vector. If there is a way of rectifying this that would also be much appreciated. Thanks for any help in advance.

#include "stdafx.h"
#include <iostream>
#include <vector>
using namespace std;

int main()
{
int i, j;
int RandomT = rand() % 120;
int RandomAT = rand() % 120;
int RandomX = rand() % 120;

vector <vector<char>> map(6, vector<char>(20, '.'));

for (i = 0; i < 6; i++) {
for (j = 0; j < 20; j++)
{
cout << map[i][j];
if (((i * 20) + j) == RandomT) {
map[i][j] = 'T';
cout << map[i][j];
}
cout << map[i][j];
if (((i * 20) + j) == RandomAT) {
map[i][j] = '@';
cout << map[i][j];
}
cout << map[i][j];
if (((i * 20) + j) == RandomX) {
map[i][j] = 'X';
cout << map[i][j];
}

cout << endl;

}
}
return 0;
}

[SakurasouBusters]

What is your assignment you are attempting to solve?

[Jake123456]

It was just an additional in class task to try and create a board game with vectors

[SakurasouBusters]

for (i = 0; i < 6; i++) {
for (j = 0; j < 20; j++)
{
cout << map[i][j];
if (((i * 20) + j) == RandomT) {
map[i][j] = 'T';
cout << map[i][j];
}
cout << map[i][j];
if (((i * 20) + j) == RandomAT) {
map[i][j] = '@';
cout << map[i][j];
}
cout << map[i][j];
if (((i * 20) + j) == RandomX) {
map[i][j] = 'X';
cout << map[i][j];
}

cout << endl;

}
}

Should be :

for (i = 0; i < 6; i++) {
for (j = 0; j < 20; j++)
{
if (((i * 20) + j) == RandomT) {
map[i][j] = 'T';
cout << map[i][j];
}
else
if (((i * 20) + j) == RandomAT) {
map[i][j] = '@';
cout << map[i][j];
}
else
if (((i * 20) + j) == RandomX) {
map[i][j] = 'X';
cout << map[i][j];
}
else cout << map[i][j];
}

cout << endl; // Note : This line has been moved
}

[Jake123456]

Ah you life saver, thanks so much. I knew it was something small that was tripping me up

[Jake123456]

Do you know the best way of going about putting the movement into the vectors?

[SakurasouBusters]

Do you know the best way of going about putting the movement into the vectors?

What do you mean?

[Jake123456]

How you would approach adding movement within the vector. I was trying to get:

while(true)
if

else

to work but was not sure if it was the best way to go about or in fact if it would work at all?

[SakurasouBusters]

What pieces do you want them to move? Should they move randomly after a certain interval?

[Jake123456]

The '@' symbol is supposed to represent the player and it should move based on what key the user enters.

s – move down
w – move up
d – move right
a – move left

[SakurasouBusters]

#include <iostream>
#include <vector>
using namespace std;

int main()
{
int i, j;
int RandomT = rand() % 120;
int RandomAT = rand() % 120;
int RandomX = rand() % 120;

vector <vector<char>> map(6, vector<char>(20, '.'));

int pX, pY;
int pX_2, pY_2;

system("cls");
for (i = 0; i < 6; i++) {
for (j = 0; j < 20; j++)
{
if (((i * 20) + j) == RandomT) {
map[i][j] = 'T';
cout << map[i][j];
}
else
if (((i * 20) + j) == RandomAT) {
map[i][j] = '@';
pX = j, pY = i;
cout << map[i][j];
}
else
if (((i * 20) + j) == RandomX) {
map[i][j] = 'X';
cout << map[i][j];
}
else cout << map[i][j];
}

cout << endl; // Note : This line has been moved
}


while(1)
{
    char choice; cout << "Your direction : "; cin >> choice;
    switch(choice)
    {
        case 's' : pX_2 = pX; pY_2 = pY + 1; break;
        case 'w' : pX_2 = pX; pY_2 = pY - 1; break;
        case 'd' : pX_2 = pX + 1; pY_2 = pY; break;
        case 'a' : pX_2 = pX - 1; pY_2 = pY; break;
        default : pX_2 = pX; pY_2 = pY; break;
    }
    if(pX_2 >= 0 && pX_2 <= 19 && pY_2 >= 0 && pY_2 <= 5 && map[pY_2][pX_2] == '.')
    {
        map[pY_2][pX_2] = '@';
        map[pY][pX] = '.';
        pX = pX_2; pY = pY_2;
    }

system("cls");
for (i = 0; i < 6; i++) {
for (j = 0; j < 20; j++)
{
    cout << map[i][j];
}

cout << endl; // Note : This line has been moved
}


}
return 0;
} 

Edit : Modified the code a bit so that the code can work well on Cpp.sh.
http://cpp.sh/3gc55

[Jake123456]

Yeah my visual studio is playing up a bit at the moment so I adjusted the code to make it work for C++ shell. Thanks so much.