The IGNORE_DAMAGE bits don't work in Counter-Strike.
Do this instead
Code:
// is this player falling fast enough to get some damage ?
if (pEdict->v.flFallVelocity > PLAYER_MAX_SAFE_FALL_SPEED)
look in the SDK's player.h:
Code:
#define PLAYER_FATAL_FALL_SPEED 1024// approx 60 feet
#define PLAYER_MAX_SAFE_FALL_SPEED 580// approx 20 feet