Map editor help please! :} (changed my mind)

[MadPumpkin]

I have decided to make both things in C++ now because i'm learning more about it and need some project to start with.
*'ed are changed things
I am making a map/level editor in *C++, for a arcade style top down shooter,(also in *C++) i need to know how to do basic things like...
1. File creating/writing/loading
I need to know how to create new documents, using *C++, and write them so that i can make map files for my game.
2. Cursor and tile clipping to a grid
I need to know how to... Lets say i have a red square as my cursor, i want to make this cursor automatically clip to a grid so
so that when i run functions and such, to lay a(n) tile/item/unit and it will be correctly placed
*
*
As you can see, i am still aiming for the same things, and still need help with the same things.
Once again,
Much appreciated,
MadPumpkin

[MarauderIIC]

I am making a map/level editor in BlitzBasic, for a arcade style top down shooter,(also in BB) i need to know how to do basic things like...
2. Cursor and tile clipping to a grid
I need to know how to... Lets say i have a red square as my cursor, i want to make this cursor automatically clip to a grid so
so that when i run functions and such, to lay a(n) tile/item/unit and it will be correctly placed

Not familiar enough with BlitzBasic personally to be able to help you with file/io but I'll tackle the easy problem: clip to grid in C++ (you surely have equivalent in BB) can be done by:

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float cursorX = mouse cursor's x position
float cursorY = mouse cursor's y position

cursorX = floor(cursorX); //1.2131 becomes 1, 1.9999 becomes 1, 1 becomes 1
cursorY = floor(cursorY);

In C++, you can duplicate this effect by

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cursorX = int(cursorX);
cursorY = int(cursorY);

Although in some cases you may prefer taking the ceiling:

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cursorX OR cursorY = ceil(cursorX); //1.2131 becomes 2, 1.99999 becomes 2, 1.000000000001 becomes 2, 1 becomes 1

You probably have equivalents, at least of floor() and ceil[ing]() in BlitzBasic.

[MadPumpkin]

Thank you very much! ill get started on that part of the code right away :}
thanks again

[MadPumpkin]

Hey People!! i am in dire need of help! seriously im bad at level editor creation!!!

[MarauderIIC]

Okay, file I/O in C++ goes like this:

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#include <fstream> //file operation thingies
#include <string> //for C++ style strings
#include <iostream> //for cout, cin

using namespace std;

int main() {
    string fname;
    string pants;
    cout << "Gimme filename: ";
    getline(cin, fname);
    ifstream myfile(fname.c_str()); //ifstream as in iutput filestream as in file acts as input as in read from file
    while (myfile) { //while myfile is open and accessible and isn't out of data to throw at us
        getline(myfile, pants); //pull a line from myfile
        cout << pants << endl; //write it to screen
    }
    myfile.close();

    string input;
    cout << "Gimme anudder filename: ";
    getline(cin, fname); //overwrite fname with console input
    ofstream myfile2(fname.c_str()); //ofstream as in output filestream as in output to file
    //by default, if file doesn't exist, it is created

    cout << "Tell me something!";
    //do a priming read
    getline(cin, input); //get some user input
    while (input != "") { //as long as the user doesn't input nothing, keep doing this stuff
        myfile2 << input << endl; //write input to file
        getline(cin, input); //get some more user input
    }
    myfile2.close();

    return 0;
}

Wrote that here in phpBB but I think it'll work as-is

[eatcomics]

Yeah it took me a day or two to get down file I/O but once you understand it and get it right it becomes fairly simple

[MadPumpkin]

Yeah it took me a day or two to get down file I/O but once you understand it and get it right it becomes fairly simple

well i understand file I/O now lol but yea your right