Let''s say I have a world map for a game represented by characters. Each character is a tile in the game. Here''s an example: char *world[] = { "1111111111111111", "1000000000000001", "1011110110111111", "1010000000000001", "1010111111111101", "1000000000000101", "1010101100110101", "1010101000010101", "1010101111110001", "1010100000000101", "1010111111111101", "1010000000000001", "1011111111011111", "1000000000000001", "1111111111111111" }; How can I modify an individual character in the array (like replacing a 1 with a 0)? I know this is simple C that I should have learned long ago, but I''m still a very inexperienced programmer (I have more knowledge of Windows and DirectX APIs than I do of C/C++). I tried using code like this to modify a character at location (xmap, ymap): world[ymap][xmap] = ''0''; When I try to use this in my game, the tile changes when I run this code, but other random tiles on the map change too, so obviously I''m accessing the array incorrectly. What''s wrong? Al

Al,

This takes me back.......

You are already using xmap and ymap coordinates, thats a start, but to address the array anywhere use:

array[(ymap * 16) + xmap] = 0;

Where ymap = 0 is the top line of the declaration, and xmap = 0 is the first character on the left, and 16 is the width of the "map".

Alternatively you could of set up a two dimensional array:

int array[16][16];

then can address it the way you''ve been trying.

Bye

Matt