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dynamic array sizes

redmonkey · 2001-02-05T14:17:24

in my game, the main play area is a map. the map is an array[w][h] of atile (my own struct), decalred like this: atile map[MAX_WIDTH][MAX_HEIGHT]; my MAX_''s are around 1024 each, and my atile''s take up around 20 bytes, which is 20971520 bytes :] (thats 20megs of memory peeps). this doesnt bother me at all, its fine, but the thing is, its still 20 megs, when im using a map 20x20 instead of 1024x1024. i have a map format etc, and have a variable storing my mapw (and maph) so, the unused tiles are still there, but never attempted to be read. i need to be able to specifiy the dimensions of this map to save some memory. i know its got something to do with memalloc and resalloc i think, but i dont know how to implement it. can some one gimme some pointers (excuse the pun). im wokring in c, i dont mind branching out into c++, and im familar with memory usage, just not when declaring variables... (msvc++ btw) __________________ graham "red" reeves. red@deadpenguin.org www.deadpenguin.org