diff options
Diffstat (limited to 'src/clientiface.cpp')
| -rw-r--r-- | src/clientiface.cpp | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/src/clientiface.cpp b/src/clientiface.cpp index 3a6caf800..8c429976b 100644 --- a/src/clientiface.cpp +++ b/src/clientiface.cpp @@ -192,17 +192,35 @@ void RemoteClient::GetNextBlocks ( */ s32 new_nearest_unsent_d = -1; - // get view range and camera fov from the client + // Get view range and camera fov (radians) from the client s16 wanted_range = sao->getWantedRange() + 1; float camera_fov = sao->getFov(); - const s16 full_d_max = std::min(adjustDist(m_max_send_distance, camera_fov), wanted_range); - const s16 d_opt = std::min(adjustDist(m_block_optimize_distance, camera_fov), wanted_range); + // If below the heuristic zoom threshold (see adjustDist() in numeric.cpp) + // distrust client-sent FOV and get server-set player object property + // zoom FOV (degrees) as a check to avoid hacked clients using FOV to load + // distant world. + // 0.888 radians is slightly larger than the zoom threshold of 1.775 / 2 + // radians. + if (camera_fov < 0.888f) { + float prop_zoom_fov = sao->getZoomFOV(); + // If zoom is disabled by value 0 + if (prop_zoom_fov < 0.001f) + camera_fov = 0.888f; + else + // Degrees -> radians + camera_fov = prop_zoom_fov * core::DEGTORAD; + } + + const s16 full_d_max = std::min(adjustDist(m_max_send_distance, camera_fov), + wanted_range); + const s16 d_opt = std::min(adjustDist(m_block_optimize_distance, camera_fov), + wanted_range); const s16 d_blocks_in_sight = full_d_max * BS * MAP_BLOCKSIZE; - //infostream << "Fov from client " << camera_fov << " full_d_max " << full_d_max << std::endl; s16 d_max = full_d_max; - s16 d_max_gen = std::min(adjustDist(m_max_gen_distance, camera_fov), wanted_range); + s16 d_max_gen = std::min(adjustDist(m_max_gen_distance, camera_fov), + wanted_range); // Don't loop very much at a time, adjust with distance, // do more work per RTT with greater distances. |