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Reduce server FOV with forward speed

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This causes blocks in front of the player to be rendered sooner and
blocks in the periphal view (that would soon be out of view) a bit later.
Overall this leads to smoother rendering as the player is moving around.
This commit is contained in:
Lars Hofhansl 2017-10-25 23:10:33 -07:00
parent 166ded4a11
commit 0732bf73a4
1 changed files with 9 additions and 1 deletions
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10
src/clientiface.cpp
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@ -125,7 +125,7 @@ void RemoteClient::GetNextBlocks (
if (playerspeed.getLength() > 1.0f * BS) if (playerspeed.getLength() > 1.0f * BS)
playerspeeddir = playerspeed / playerspeed.getLength(); playerspeeddir = playerspeed / playerspeed.getLength();
// Predict to next block // Predict to next block
v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS; v3f playerpos_predicted = playerpos + playerspeeddir * (MAP_BLOCKSIZE * BS);
v3s16 center_nodepos = floatToInt(playerpos_predicted, BS); v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
@ -196,6 +196,14 @@ void RemoteClient::GetNextBlocks (
s16 wanted_range = sao->getWantedRange() + 1; s16 wanted_range = sao->getWantedRange() + 1;
float camera_fov = sao->getFov(); float camera_fov = sao->getFov();
// cos(angle between velocity and camera) * |velocity|
// Limit to 0.0f in case player moves backwards.
f32 dot = rangelim(camera_dir.dotProduct(playerspeed), 0.0f, 300.0f);
// Reduce the field of view when a player moves and looks forward.
// limit max fov effect to 50%, 60% at 20n/s fly speed
camera_fov = camera_fov / (1 + dot / 300.0f);
const s16 full_d_max = std::min(m_max_send_distance, wanted_range); const s16 full_d_max = std::min(m_max_send_distance, wanted_range);
const s16 d_opt = std::min(m_block_optimize_distance, wanted_range); const s16 d_opt = std::min(m_block_optimize_distance, wanted_range);
const s16 d_blocks_in_sight = full_d_max * BS * MAP_BLOCKSIZE; const s16 d_blocks_in_sight = full_d_max * BS * MAP_BLOCKSIZE;