Loading This Map Array

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06-20-2003
drdroid

Loading This Map Array

Basically, I'm loading up a 12 X 16 array of 0's, 1's and 2's from a text file. I want to assign each of those to a spot in the array.

This is what the text file looks like:

Code:

1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1

This is my code so far to cycle through the array:

Code:

#include <fstream.h> char map[12][16]; void main() { ofstream file("test.txt"); for(int y=0,y<13,y++) { for(int x=0,x<17,x++) { map[y][x]= } } file.close(); }
06-20-2003
Zach L.

Your loops go one too far, for one thing.
06-20-2003
quzah

Re: Loading This Map Array

Quote:

Originally posted by drdroid
This is my code so far to cycle through the array:

#include <fstream.h>

char map[12][16];

void main()

1) 'void main' - read the FAQ. This is wrong.
2) read you C++ book on functions to read characters from a file.

Seriously, take two seconds and look it up. You obviously found out how to open a file, so turn the page and learn how to read.

Quzah.
06-20-2003
drdroid

hmmm... Now that I look back at it. I realise that it says nothing like that. I wonder if that's why I asked it on the board? Could it be? I.. Have.. No.. Idea?

I'd apologize for being rude, but you had it coming.
06-20-2003
quzah

Quote:

Originally posted by drdroid
hmmm... Now that I look back at it. I realise that it says nothing like that. I wonder if that's why I asked it on the board? Could it be? I.. Have.. No.. Idea?

I'd apologize for being rude, but you had it coming.

You're telling me your source of information that covers opening files says absolutely nothing about reading from them? Bull$$$$.

Even something as basic as the man pages for things like 'fopen' reference other file related functions.

I mean really, god damn, use two seconds and a search engine and the first link gave me the answer to your question. And my keywords had absolutely nothing to do with putting the information into an array.

Quzah.
06-20-2003
HaLCy0n

Your syntax for the for loops is incorrect. It should be:

Code:

for(int y=0;y<size;++y) { rest of your code }

You put commas instead of semicolons, and you also go one farther than you should. To read in from a file, you treat it exactly like you were going to read in from the console.

Code:

file>>data;//to read to a \n (new line) file.get(map[x][y]);//to get one character at a time and put it in map[x][y]

You should also be using the new standard headers, which include everything in the standard namespace.

Code:

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

For more on namespaces, there should be something in the tutorial.
06-20-2003
drdroid

Error:

I get the error:

Code:

D:\Programs\PROJECTS\Map Loader\Main.cpp(15) : error C2039: 'get' : is not a member of 'basic_ofstream<char,struct std::char_traits<char> >'
06-20-2003
HaLCy0n

I'm guessing you didn't #include <iostream>. I believe that is where it is declared.
06-20-2003
drdroid

...?

Here's my code:

Code:

#include <iostream> #include <fstream> using namespace std; char map[12][16]; char info; void main() { ofstream data("test.txt"); for(int y=0;y<13;y++) { for(int x=0;x<17;x++) { data.get(map[y][x]); cout << map[y][x]; } data << info; cout << endl; } data.close(); }
06-20-2003
HaLCy0n

Re: ...?

Code:

int main() //should be int { ifstream data("test.txt"); //should be ifstream for(int y=0;y<12;y++)//should be the size { for(int x=0;x<16;x++)//same here

A few errors.
06-21-2003
drdroid

...

It not loading right. I get all 0's.

Code:

int loadmap() { ifstream data("test.txt"); for(int scany=0;scany<18;scany++) { for(int scanx=0;scanx<25;scanx++) { data.get(map[scany][scanx]); } } data.close(); return 0; }

Btw, I also changed the map.

Code:

1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1
06-24-2003
Speedy5

Use this instead...

data >> map[scany][scanx];

And why isn't it (x, y)? You're doing the opposite now.