MAX_TRAPS
for (i = 0; i < MAX_TRAPS; i++) {
r_write(fp, traps, (MAX_TRAPS * sizeof(trap)));
r_read(fp, traps, (MAX_TRAPS * sizeof(trap)));
n = get_rand(5, MAX_TRAPS);
trap traps[MAX_TRAPS];
for (i = 0; ((i < MAX_TRAPS) && (traps[i].trap_type != NO_TRAP)); i++) {