Quote from p_user.cpp

3121 // Allow the spectator to do a few things, then break out.
3122 if ( player->bSpectating )
3123 {
... ...
3133 // Allow the player to fly around when a spectator.
3134 player->mo->flags |= MF_NOGRAVITY;
3135 player->mo->flags2 |= MF2_FLY;
... ...
3200 if ( cmd->ucmd.upmove == -32768 )
3201 { // Only land if in the air
3202 if ((player->mo->flags2 & MF2_FLY) && player->mo->waterlevel < 2)
3203 {
3204 player->mo->flags2 &= ~MF2_FLY;
3205 player->mo->flags &= ~MF_NOGRAVITY;
3206 }
3207 }
... ...
3225 // Done with spectator specific logic.
3226 return;
3227 }

 docs/zandronum-history.txt | 1 +
 src/c_cmds.cpp | 17 ++++++++++-
 src/cl_demo.cpp | 4 ++
 src/cl_demo.h | 1 +
 src/p_interaction.cpp | 11 ++++--
 src/p_user.cpp | 139 +++++++++++++++++++++-----------------------------------------------------------------
 6 files changed, 63 insertions(+), 110 deletions(-)