dev-cpp-users

[Dev-C++] Resize Arrays

[Robson B. <rob...@su...>]

Hi! I'm in trouble again! My c++ book does not explain how to redim an array
at run time, preserving contents.

I want to resize an array of sprites every time that user presses 'N' key,
to add a new sprite, specified in the following class:

        class SPRITE {
            public:
                int x;
                int y;
                int sx;
                int sy;
                long color;
                void move(void);
                void draw(void);
                void erase(void);
        };

Any input appreciated.

Re: [Dev-C++] Resize Arrays

[Zodiaq <zo...@ac...>]

Hello Robson and all Dev-C++ users,

Saturday, February 22, 2003, 4:28:53 PM, Robson wrote as follows:

RB> Hi! I'm in trouble again! My c++ book does not explain how to redim an array
RB> at run time, preserving contents.

RB> I want to resize an array of sprites every time that user presses 'N' key,
RB> to add a new sprite, specified in the following class:

RB>         class SPRITE {
RB>             public:
RB>                 int x;
RB>                 int y;
RB>                 int sx;
RB>                 int sy;
RB>                 long color;
RB>                 void move(void);
RB>                 void draw(void);
RB>                 void erase(void);
RB>         };

RB> Any input appreciated.

IMO you should use std:vector...
just do it like this:
#include <vector>

using std::vector;
vector<SPRITE>mySprites;

//and now to add new sprite
SPRITE new;
//here make some adjustments to new object
mySprites.push_back( new );

//to get number of sprites
int count = mySprites.size();
//to get sprite number X
int x = 3;
SPRITE &duck = mySprites[ x ];

it is easy as that!

-- 
regards, Zodiaq