minetest/src/clientmap.cpp

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/*
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Minetest
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Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "clientmap.h"
#include "client.h"
#include "mapblock_mesh.h"
#include <IMaterialRenderer.h>
#include <matrix4.h>
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#include "log.h"
#include "mapsector.h"
#include "nodedef.h"
#include "mapblock.h"
#include "profiler.h"
#include "settings.h"
#include "camera.h" // CameraModes
#include "util/basic_macros.h"
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#include <algorithm>
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ClientMap::ClientMap(
Client *client,
MapDrawControl &control,
scene::ISceneNode* parent,
scene::ISceneManager* mgr,
s32 id
):
Map(dout_client, client),
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scene::ISceneNode(parent, mgr, id),
m_client(client),
m_control(control),
m_camera_position(0,0,0),
m_camera_direction(0,0,1),
m_camera_fov(M_PI)
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{
m_box = aabb3f(-BS*1000000,-BS*1000000,-BS*1000000,
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BS*1000000,BS*1000000,BS*1000000);
/* TODO: Add a callback function so these can be updated when a setting
* changes. At this point in time it doesn't matter (e.g. /set
* is documented to change server settings only)
*
* TODO: Local caching of settings is not optimal and should at some stage
* be updated to use a global settings object for getting thse values
* (as opposed to the this local caching). This can be addressed in
* a later release.
*/
m_cache_trilinear_filter = g_settings->getBool("trilinear_filter");
m_cache_bilinear_filter = g_settings->getBool("bilinear_filter");
m_cache_anistropic_filter = g_settings->getBool("anisotropic_filter");
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}
ClientMap::~ClientMap()
{
}
MapSector * ClientMap::emergeSector(v2s16 p2d)
{
DSTACK(FUNCTION_NAME);
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// Check that it doesn't exist already
try{
return getSectorNoGenerate(p2d);
}
catch(InvalidPositionException &e)
{
}
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// Create a sector
ClientMapSector *sector = new ClientMapSector(this, p2d, m_gamedef);
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{
//MutexAutoLock lock(m_sector_mutex); // Bulk comment-out
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m_sectors[p2d] = sector;
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}
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return sector;
}
void ClientMap::OnRegisterSceneNode()
{
if(IsVisible)
{
SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
}
ISceneNode::OnRegisterSceneNode();
}
void ClientMap::getBlocksInViewRange(v3s16 cam_pos_nodes,
v3s16 *p_blocks_min, v3s16 *p_blocks_max)
{
v3s16 box_nodes_d = m_control.wanted_range * v3s16(1, 1, 1);
// Define p_nodes_min/max as v3s32 because 'cam_pos_nodes -/+ box_nodes_d'
// can exceed the range of v3s16 when a large view range is used near the
// world edges.
v3s32 p_nodes_min(
cam_pos_nodes.X - box_nodes_d.X,
cam_pos_nodes.Y - box_nodes_d.Y,
cam_pos_nodes.Z - box_nodes_d.Z);
v3s32 p_nodes_max(
cam_pos_nodes.X + box_nodes_d.X,
cam_pos_nodes.Y + box_nodes_d.Y,
cam_pos_nodes.Z + box_nodes_d.Z);
// Take a fair amount as we will be dropping more out later
// Umm... these additions are a bit strange but they are needed.
*p_blocks_min = v3s16(
p_nodes_min.X / MAP_BLOCKSIZE - 3,
p_nodes_min.Y / MAP_BLOCKSIZE - 3,
p_nodes_min.Z / MAP_BLOCKSIZE - 3);
*p_blocks_max = v3s16(
p_nodes_max.X / MAP_BLOCKSIZE + 1,
p_nodes_max.Y / MAP_BLOCKSIZE + 1,
p_nodes_max.Z / MAP_BLOCKSIZE + 1);
}
void ClientMap::updateDrawList(video::IVideoDriver* driver)
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{
ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
g_profiler->add("CM::updateDrawList() count", 1);
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for (std::map<v3s16, MapBlock*>::iterator i = m_drawlist.begin();
i != m_drawlist.end(); ++i) {
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MapBlock *block = i->second;
block->refDrop();
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}
m_drawlist.clear();
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v3f camera_position = m_camera_position;
v3f camera_direction = m_camera_direction;
f32 camera_fov = m_camera_fov;
// Use a higher fov to accomodate faster camera movements.
// Blocks are cropped better when they are drawn.
// Or maybe they aren't? Well whatever.
camera_fov *= 1.2;
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v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
v3s16 p_blocks_min;
v3s16 p_blocks_max;
getBlocksInViewRange(cam_pos_nodes, &p_blocks_min, &p_blocks_max);
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// Number of blocks in rendering range
u32 blocks_in_range = 0;
// Number of blocks occlusion culled
u32 blocks_occlusion_culled = 0;
// Number of blocks in rendering range but don't have a mesh
u32 blocks_in_range_without_mesh = 0;
// Blocks that had mesh that would have been drawn according to
// rendering range (if max blocks limit didn't kick in)
u32 blocks_would_have_drawn = 0;
// Blocks that were drawn and had a mesh
u32 blocks_drawn = 0;
// Blocks which had a corresponding meshbuffer for this pass
//u32 blocks_had_pass_meshbuf = 0;
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// Blocks from which stuff was actually drawn
//u32 blocks_without_stuff = 0;
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// Distance to farthest drawn block
float farthest_drawn = 0;
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// No occlusion culling when free_move is on and camera is
// inside ground
bool occlusion_culling_enabled = true;
if (g_settings->getBool("free_move")) {
MapNode n = getNodeNoEx(cam_pos_nodes);
if (n.getContent() == CONTENT_IGNORE ||
m_nodedef->get(n).solidness == 2)
occlusion_culling_enabled = false;
}
for (std::map<v2s16, MapSector*>::iterator si = m_sectors.begin();
si != m_sectors.end(); ++si) {
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MapSector *sector = si->second;
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v2s16 sp = sector->getPos();
if (m_control.range_all == false) {
if (sp.X < p_blocks_min.X || sp.X > p_blocks_max.X ||
sp.Y < p_blocks_min.Z || sp.Y > p_blocks_max.Z)
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continue;
}
MapBlockVect sectorblocks;
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sector->getBlocks(sectorblocks);
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/*
Loop through blocks in sector
*/
u32 sector_blocks_drawn = 0;
for (MapBlockVect::iterator i = sectorblocks.begin();
i != sectorblocks.end(); ++i) {
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MapBlock *block = *i;
/*
Compare block position to camera position, skip
if not seen on display
*/
if (block->mesh != NULL)
block->mesh->updateCameraOffset(m_camera_offset);
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float range = 100000 * BS;
if (m_control.range_all == false)
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range = m_control.wanted_range * BS;
float d = 0.0;
if (!isBlockInSight(block->getPos(), camera_position,
camera_direction, camera_fov, range, &d))
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continue;
blocks_in_range++;
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/*
Ignore if mesh doesn't exist
*/
if (block->mesh == NULL) {
blocks_in_range_without_mesh++;
continue;
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}
/*
Occlusion culling
*/
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if (occlusion_culling_enabled && isBlockOccluded(block, cam_pos_nodes)) {
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blocks_occlusion_culled++;
continue;
}
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// This block is in range. Reset usage timer.
block->resetUsageTimer();
// Limit block count in case of a sudden increase
blocks_would_have_drawn++;
if (blocks_drawn >= m_control.wanted_max_blocks &&
!m_control.range_all &&
d > m_control.wanted_range * BS)
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continue;
// Add to set
block->refGrab();
m_drawlist[block->getPos()] = block;
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sector_blocks_drawn++;
blocks_drawn++;
if (d / BS > farthest_drawn)
farthest_drawn = d / BS;
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} // foreach sectorblocks
if (sector_blocks_drawn != 0)
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m_last_drawn_sectors.insert(sp);
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}
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m_control.blocks_would_have_drawn = blocks_would_have_drawn;
m_control.blocks_drawn = blocks_drawn;
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m_control.farthest_drawn = farthest_drawn;
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g_profiler->avg("CM: blocks in range", blocks_in_range);
g_profiler->avg("CM: blocks occlusion culled", blocks_occlusion_culled);
if (blocks_in_range != 0)
g_profiler->avg("CM: blocks in range without mesh (frac)",
(float)blocks_in_range_without_mesh / blocks_in_range);
g_profiler->avg("CM: blocks drawn", blocks_drawn);
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g_profiler->avg("CM: farthest drawn", farthest_drawn);
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g_profiler->avg("CM: wanted max blocks", m_control.wanted_max_blocks);
}
struct MeshBufList
{
/*!
* Specifies in which layer the list is.
* All lists which are in a lower layer are rendered before this list.
*/
u8 layer;
video::SMaterial m;
std::vector<scene::IMeshBuffer*> bufs;
};
struct MeshBufListList
{
std::vector<MeshBufList> lists;
void clear()
{
lists.clear();
}
void add(scene::IMeshBuffer *buf, u8 layer)
{
const video::SMaterial &m = buf->getMaterial();
for(std::vector<MeshBufList>::iterator i = lists.begin();
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i != lists.end(); ++i){
MeshBufList &l = *i;
// comparing a full material is quite expensive so we don't do it if
// not even first texture is equal
if (l.m.TextureLayer[0].Texture != m.TextureLayer[0].Texture)
continue;
if(l.layer != layer)
continue;
if (l.m == m) {
l.bufs.push_back(buf);
return;
}
}
MeshBufList l;
l.layer = layer;
l.m = m;
l.bufs.push_back(buf);
lists.push_back(l);
}
};
void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
{
DSTACK(FUNCTION_NAME);
bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
std::string prefix;
if (pass == scene::ESNRP_SOLID)
prefix = "CM: solid: ";
else
prefix = "CM: transparent: ";
/*
This is called two times per frame, reset on the non-transparent one
*/
if (pass == scene::ESNRP_SOLID)
m_last_drawn_sectors.clear();
/*
Get time for measuring timeout.
Measuring time is very useful for long delays when the
machine is swapping a lot.
*/
int time1 = time(0);
/*
Get animation parameters
*/
float animation_time = m_client->getAnimationTime();
int crack = m_client->getCrackLevel();
u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
v3f camera_position = m_camera_position;
v3f camera_direction = m_camera_direction;
f32 camera_fov = m_camera_fov;
/*
Get all blocks and draw all visible ones
*/
u32 vertex_count = 0;
u32 meshbuffer_count = 0;
// For limiting number of mesh animations per frame
u32 mesh_animate_count = 0;
u32 mesh_animate_count_far = 0;
// Blocks that were drawn and had a mesh
u32 blocks_drawn = 0;
// Blocks which had a corresponding meshbuffer for this pass
u32 blocks_had_pass_meshbuf = 0;
// Blocks from which stuff was actually drawn
u32 blocks_without_stuff = 0;
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/*
Draw the selected MapBlocks
*/
{
ScopeProfiler sp(g_profiler, prefix + "drawing blocks", SPT_AVG);
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MeshBufListList drawbufs;
for (std::map<v3s16, MapBlock*>::iterator i = m_drawlist.begin();
i != m_drawlist.end(); ++i) {
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MapBlock *block = i->second;
// If the mesh of the block happened to get deleted, ignore it
if (block->mesh == NULL)
continue;
float d = 0.0;
if (!isBlockInSight(block->getPos(), camera_position,
camera_direction, camera_fov, 100000 * BS, &d))
continue;
// Mesh animation
if (pass == scene::ESNRP_SOLID) {
//MutexAutoLock lock(block->mesh_mutex);
MapBlockMesh *mapBlockMesh = block->mesh;
assert(mapBlockMesh);
// Pretty random but this should work somewhat nicely
bool faraway = d >= BS * 50;
//bool faraway = d >= m_control.wanted_range * BS;
if (mapBlockMesh->isAnimationForced() || !faraway ||
mesh_animate_count_far < (m_control.range_all ? 200 : 50)) {
bool animated = mapBlockMesh->animate(faraway, animation_time,
crack, daynight_ratio);
if (animated)
mesh_animate_count++;
if (animated && faraway)
mesh_animate_count_far++;
} else {
mapBlockMesh->decreaseAnimationForceTimer();
}
}
/*
Get the meshbuffers of the block
*/
{
//MutexAutoLock lock(block->mesh_mutex);
MapBlockMesh *mapBlockMesh = block->mesh;
assert(mapBlockMesh);
for (int layer = 0; layer < MAX_TILE_LAYERS; layer++) {
scene::IMesh *mesh = mapBlockMesh->getMesh(layer);
assert(mesh);
u32 c = mesh->getMeshBufferCount();
for (u32 i = 0; i < c; i++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
video::SMaterial& material = buf->getMaterial();
video::IMaterialRenderer* rnd =
driver->getMaterialRenderer(material.MaterialType);
bool transparent = (rnd && rnd->isTransparent());
if (transparent == is_transparent_pass) {
if (buf->getVertexCount() == 0)
errorstream << "Block [" << analyze_block(block)
<< "] contains an empty meshbuf" << std::endl;
material.setFlag(video::EMF_TRILINEAR_FILTER,
m_cache_trilinear_filter);
material.setFlag(video::EMF_BILINEAR_FILTER,
m_cache_bilinear_filter);
material.setFlag(video::EMF_ANISOTROPIC_FILTER,
m_cache_anistropic_filter);
material.setFlag(video::EMF_WIREFRAME,
m_control.show_wireframe);
drawbufs.add(buf, layer);
}
}
}
}
}
std::vector<MeshBufList> &lists = drawbufs.lists;
int timecheck_counter = 0;
for (std::vector<MeshBufList>::iterator i = lists.begin();
i != lists.end(); ++i) {
timecheck_counter++;
if (timecheck_counter > 50) {
timecheck_counter = 0;
int time2 = time(0);
if (time2 > time1 + 4) {
infostream << "ClientMap::renderMap(): "
"Rendering takes ages, returning."
<< std::endl;
return;
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}
}
MeshBufList &list = *i;
driver->setMaterial(list.m);
for (std::vector<scene::IMeshBuffer*>::iterator j = list.bufs.begin();
j != list.bufs.end(); ++j) {
scene::IMeshBuffer *buf = *j;
driver->drawMeshBuffer(buf);
vertex_count += buf->getVertexCount();
meshbuffer_count++;
}
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}
} // ScopeProfiler
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// Log only on solid pass because values are the same
if (pass == scene::ESNRP_SOLID) {
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g_profiler->avg("CM: animated meshes", mesh_animate_count);
g_profiler->avg("CM: animated meshes (far)", mesh_animate_count_far);
}
g_profiler->avg(prefix + "vertices drawn", vertex_count);
if (blocks_had_pass_meshbuf != 0)
g_profiler->avg(prefix + "meshbuffers per block",
(float)meshbuffer_count / (float)blocks_had_pass_meshbuf);
if (blocks_drawn != 0)
g_profiler->avg(prefix + "empty blocks (frac)",
(float)blocks_without_stuff / blocks_drawn);
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/*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
<<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
}
static bool getVisibleBrightness(Map *map, v3f p0, v3f dir, float step,
float step_multiplier, float start_distance, float end_distance,
INodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
int *result, bool *sunlight_seen)
{
int brightness_sum = 0;
int brightness_count = 0;
float distance = start_distance;
dir.normalize();
v3f pf = p0;
pf += dir * distance;
int noncount = 0;
bool nonlight_seen = false;
bool allow_allowing_non_sunlight_propagates = false;
bool allow_non_sunlight_propagates = false;
// Check content nearly at camera position
{
v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
MapNode n = map->getNodeNoEx(p);
if(ndef->get(n).param_type == CPT_LIGHT &&
!ndef->get(n).sunlight_propagates)
allow_allowing_non_sunlight_propagates = true;
}
// If would start at CONTENT_IGNORE, start closer
{
v3s16 p = floatToInt(pf, BS);
MapNode n = map->getNodeNoEx(p);
if(n.getContent() == CONTENT_IGNORE){
float newd = 2*BS;
pf = p0 + dir * 2*newd;
distance = newd;
sunlight_min_d = 0;
}
}
for(int i=0; distance < end_distance; i++){
pf += dir * step;
distance += step;
step *= step_multiplier;
v3s16 p = floatToInt(pf, BS);
MapNode n = map->getNodeNoEx(p);
if(allow_allowing_non_sunlight_propagates && i == 0 &&
ndef->get(n).param_type == CPT_LIGHT &&
!ndef->get(n).sunlight_propagates){
allow_non_sunlight_propagates = true;
}
if(ndef->get(n).param_type != CPT_LIGHT ||
(!ndef->get(n).sunlight_propagates &&
!allow_non_sunlight_propagates)){
nonlight_seen = true;
noncount++;
if(noncount >= 4)
break;
continue;
}
if(distance >= sunlight_min_d && *sunlight_seen == false
&& nonlight_seen == false)
if(n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
*sunlight_seen = true;
noncount = 0;
brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
brightness_count++;
}
*result = 0;
if(brightness_count == 0)
return false;
*result = brightness_sum / brightness_count;
/*std::cerr<<"Sampled "<<brightness_count<<" points; result="
<<(*result)<<std::endl;*/
return true;
}
int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
int oldvalue, bool *sunlight_seen_result)
{
const bool debugprint = false;
static v3f z_directions[50] = {
v3f(-100, 0, 0)
};
static f32 z_offsets[sizeof(z_directions)/sizeof(*z_directions)] = {
-1000,
};
if(z_directions[0].X < -99){
for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
z_directions[i] = v3f(
0.01 * myrand_range(-100, 100),
1.0,
0.01 * myrand_range(-100, 100)
);
z_offsets[i] = 0.01 * myrand_range(0,100);
}
}
if(debugprint)
std::cerr<<"In goes "<<PP(m_camera_direction)<<", out comes ";
int sunlight_seen_count = 0;
float sunlight_min_d = max_d*0.8;
if(sunlight_min_d > 35*BS)
sunlight_min_d = 35*BS;
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std::vector<int> values;
for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
v3f z_dir = z_directions[i];
z_dir.normalize();
core::CMatrix4<f32> a;
a.buildRotateFromTo(v3f(0,1,0), z_dir);
v3f dir = m_camera_direction;
a.rotateVect(dir);
int br = 0;
float step = BS*1.5;
if(max_d > 35*BS)
step = max_d / 35 * 1.5;
float off = step * z_offsets[i];
bool sunlight_seen_now = false;
bool ok = getVisibleBrightness(this, m_camera_position, dir,
step, 1.0, max_d*0.6+off, max_d, m_nodedef, daylight_factor,
sunlight_min_d,
&br, &sunlight_seen_now);
if(sunlight_seen_now)
sunlight_seen_count++;
if(!ok)
continue;
values.push_back(br);
// Don't try too much if being in the sun is clear
if(sunlight_seen_count >= 20)
break;
}
int brightness_sum = 0;
int brightness_count = 0;
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std::sort(values.begin(), values.end());
u32 num_values_to_use = values.size();
if(num_values_to_use >= 10)
num_values_to_use -= num_values_to_use/2;
else if(num_values_to_use >= 7)
num_values_to_use -= num_values_to_use/3;
u32 first_value_i = (values.size() - num_values_to_use) / 2;
if(debugprint){
for(u32 i=0; i < first_value_i; i++)
std::cerr<<values[i]<<" ";
std::cerr<<"[";
}
for(u32 i=first_value_i; i < first_value_i+num_values_to_use; i++){
if(debugprint)
std::cerr<<values[i]<<" ";
brightness_sum += values[i];
brightness_count++;
}
if(debugprint){
std::cerr<<"]";
for(u32 i=first_value_i+num_values_to_use; i < values.size(); i++)
std::cerr<<values[i]<<" ";
}
int ret = 0;
if(brightness_count == 0){
MapNode n = getNodeNoEx(floatToInt(m_camera_position, BS));
if(m_nodedef->get(n).param_type == CPT_LIGHT){
ret = decode_light(n.getLightBlend(daylight_factor, m_nodedef));
} else {
ret = oldvalue;
}
} else {
/*float pre = (float)brightness_sum / (float)brightness_count;
float tmp = pre;
const float d = 0.2;
pre *= 1.0 + d*2;
pre -= tmp * d;
int preint = pre;
ret = MYMAX(0, MYMIN(255, preint));*/
ret = brightness_sum / brightness_count;
}
if(debugprint)
std::cerr<<"Result: "<<ret<<" sunlight_seen_count="
<<sunlight_seen_count<<std::endl;
*sunlight_seen_result = (sunlight_seen_count > 0);
return ret;
}
void ClientMap::renderPostFx(CameraMode cam_mode)
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{
// Sadly ISceneManager has no "post effects" render pass, in that case we
// could just register for that and handle it in renderMap().
MapNode n = getNodeNoEx(floatToInt(m_camera_position, BS));
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// - If the player is in a solid node, make everything black.
// - If the player is in liquid, draw a semi-transparent overlay.
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// - Do not if player is in third person mode
const ContentFeatures& features = m_nodedef->get(n);
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video::SColor post_effect_color = features.post_effect_color;
if(features.solidness == 2 && !(g_settings->getBool("noclip") &&
m_client->checkLocalPrivilege("noclip")) &&
cam_mode == CAMERA_MODE_FIRST)
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{
post_effect_color = video::SColor(255, 0, 0, 0);
}
if (post_effect_color.getAlpha() != 0)
{
// Draw a full-screen rectangle
video::IVideoDriver* driver = SceneManager->getVideoDriver();
v2u32 ss = driver->getScreenSize();
core::rect<s32> rect(0,0, ss.X, ss.Y);
driver->draw2DRectangle(post_effect_color, rect);
}
}
void ClientMap::PrintInfo(std::ostream &out)
{
out<<"ClientMap: ";
}