MCBICK'S PROFILE

author=Cherry
No, they are used by the RPG Maker itself (the pointer to the DbMap instance of the currently map is located at the address that you can get by dereferencing address 0x4CDD14 twice, as is written in the last line of my code).

author=Cherry

#include <stdio.h>

// in onStartup:
AllocConsole(); // No include needed because DynRPG already includes the WinAPI headers
freopen("CON", "w", stdout);

author=Cherry
Here is an interface for the map tiles:

class TileMap {
  public:
    void **vTable;
    int width;
    int height;
    bool loopX;
    bool loopY;
    short *tiles;
    
    inline short *tile(int x, int y) {
        if (x < 0 || x >= width || y < 0 || y >= height) return NULL;
        return &tiles[y * width + x];
    };
}

class DbMap {
  public:
    void **vTable;
    int _unknown[12];
    TileMap *lowerLayer;
    TileMap *upperLayer;
}

DbMap *&dbMap = (**reinterpret_cast<DbMap ***>(0x4CDD14))

// *** EXAMPLE: ***
// Change lower layer tile at (3, 5) to tile ID 5000
short *tile = dbMap->lowerLayer->tile(3, 5);
if (tile) {
  std::cout << "Current tile ID: " << *tile << std::endl;
  *tile = 5000;
}

Untested, but should work, let me know if it doesn't...

Note: Since this is data which is normally not changable ingame, it means any change here persists for the game session (until game is closed) and is not affected by saving/loading/resetting the game - you have to take care of this yourself.

class TileMap {
  public:
    void **vTable;
    int width; //How is this being utilized?
    int height; //?
    bool loopX; //?
    bool loopY; //?
    short *tiles;
    inline short *tile(int x, int y) {
        if (x < 0 || x >= width || y < 0 || y >= height) return NULL;
        return &tiles[y * width + x];
    };
};
class DbMap {
  public:
    void **vTable;
    int _unknown[12]; //This is?
    TileMap *lowerLayer;
    TileMap *upperLayer;
};
DbMap *&dbMap = (**reinterpret_cast<DbMap ***>(0x4CDD14));