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- /*
- Minetest
- Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
- 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
- (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.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #include <fstream>
- #include "environment.h"
- #include "collision.h"
- #include "raycast.h"
- #include "serverobject.h"
- #include "scripting_server.h"
- #include "server.h"
- #include "daynightratio.h"
- #include "emerge.h"
- Environment::Environment(IGameDef *gamedef):
- m_time_of_day_speed(0.0f),
- m_day_count(0),
- m_gamedef(gamedef)
- {
- m_cache_enable_shaders = g_settings->getBool("enable_shaders");
- m_cache_active_block_mgmt_interval = g_settings->getFloat("active_block_mgmt_interval");
- m_cache_abm_interval = g_settings->getFloat("abm_interval");
- m_cache_nodetimer_interval = g_settings->getFloat("nodetimer_interval");
- m_time_of_day = g_settings->getU32("world_start_time");
- m_time_of_day_f = (float)m_time_of_day / 24000.0f;
- }
- u32 Environment::getDayNightRatio()
- {
- MutexAutoLock lock(this->m_time_lock);
- if (m_enable_day_night_ratio_override)
- return m_day_night_ratio_override;
- return time_to_daynight_ratio(m_time_of_day_f * 24000, m_cache_enable_shaders);
- }
- void Environment::setTimeOfDaySpeed(float speed)
- {
- m_time_of_day_speed = speed;
- }
- void Environment::setDayNightRatioOverride(bool enable, u32 value)
- {
- MutexAutoLock lock(this->m_time_lock);
- m_enable_day_night_ratio_override = enable;
- m_day_night_ratio_override = value;
- }
- void Environment::setTimeOfDay(u32 time)
- {
- MutexAutoLock lock(this->m_time_lock);
- if (m_time_of_day > time)
- ++m_day_count;
- m_time_of_day = time;
- m_time_of_day_f = (float)time / 24000.0;
- }
- u32 Environment::getTimeOfDay()
- {
- MutexAutoLock lock(this->m_time_lock);
- return m_time_of_day;
- }
- float Environment::getTimeOfDayF()
- {
- MutexAutoLock lock(this->m_time_lock);
- return m_time_of_day_f;
- }
- /*
- Check if a node is pointable
- */
- inline static bool isPointableNode(const MapNode &n,
- const NodeDefManager *nodedef , bool liquids_pointable)
- {
- const ContentFeatures &features = nodedef->get(n);
- return features.pointable ||
- (liquids_pointable && features.isLiquid());
- }
- void Environment::continueRaycast(RaycastState *state, PointedThing *result)
- {
- const NodeDefManager *nodedef = getMap().getNodeDefManager();
- if (state->m_initialization_needed) {
- // Add objects
- if (state->m_objects_pointable) {
- std::vector<PointedThing> found;
- getSelectedActiveObjects(state->m_shootline, found);
- for (const PointedThing &pointed : found) {
- state->m_found.push(pointed);
- }
- }
- // Set search range
- core::aabbox3d<s16> maximal_exceed = nodedef->getSelectionBoxIntUnion();
- state->m_search_range.MinEdge = -maximal_exceed.MaxEdge;
- state->m_search_range.MaxEdge = -maximal_exceed.MinEdge;
- // Setting is done
- state->m_initialization_needed = false;
- }
- // The index of the first pointed thing that was not returned
- // before. The last index which needs to be tested.
- s16 lastIndex = state->m_iterator.m_last_index;
- if (!state->m_found.empty()) {
- lastIndex = state->m_iterator.getIndex(
- floatToInt(state->m_found.top().intersection_point, BS));
- }
- Map &map = getMap();
- // If a node is found, this is the center of the
- // first nodebox the shootline meets.
- v3f found_boxcenter(0, 0, 0);
- // The untested nodes are in this range.
- core::aabbox3d<s16> new_nodes;
- while (state->m_iterator.m_current_index <= lastIndex) {
- // Test the nodes around the current node in search_range.
- new_nodes = state->m_search_range;
- new_nodes.MinEdge += state->m_iterator.m_current_node_pos;
- new_nodes.MaxEdge += state->m_iterator.m_current_node_pos;
- // Only check new nodes
- v3s16 delta = state->m_iterator.m_current_node_pos
- - state->m_previous_node;
- if (delta.X > 0) {
- new_nodes.MinEdge.X = new_nodes.MaxEdge.X;
- } else if (delta.X < 0) {
- new_nodes.MaxEdge.X = new_nodes.MinEdge.X;
- } else if (delta.Y > 0) {
- new_nodes.MinEdge.Y = new_nodes.MaxEdge.Y;
- } else if (delta.Y < 0) {
- new_nodes.MaxEdge.Y = new_nodes.MinEdge.Y;
- } else if (delta.Z > 0) {
- new_nodes.MinEdge.Z = new_nodes.MaxEdge.Z;
- } else if (delta.Z < 0) {
- new_nodes.MaxEdge.Z = new_nodes.MinEdge.Z;
- }
- // For each untested node
- for (s16 x = new_nodes.MinEdge.X; x <= new_nodes.MaxEdge.X; x++)
- for (s16 y = new_nodes.MinEdge.Y; y <= new_nodes.MaxEdge.Y; y++)
- for (s16 z = new_nodes.MinEdge.Z; z <= new_nodes.MaxEdge.Z; z++) {
- MapNode n;
- v3s16 np(x, y, z);
- bool is_valid_position;
- n = map.getNodeNoEx(np, &is_valid_position);
- if (!(is_valid_position && isPointableNode(n, nodedef,
- state->m_liquids_pointable))) {
- continue;
- }
- PointedThing result;
- std::vector<aabb3f> boxes;
- n.getSelectionBoxes(nodedef, &boxes,
- n.getNeighbors(np, &map));
- // Is there a collision with a selection box?
- bool is_colliding = false;
- // Minimal distance of all collisions
- float min_distance_sq = 10000000;
- v3f npf = intToFloat(np, BS);
- for (std::vector<aabb3f>::const_iterator i = boxes.begin();
- i != boxes.end(); ++i) {
- // Get current collision box
- aabb3f box = *i;
- box.MinEdge += npf;
- box.MaxEdge += npf;
- v3f intersection_point;
- v3s16 intersection_normal;
- if (!boxLineCollision(box, state->m_shootline.start,
- state->m_shootline.getVector(), &intersection_point,
- &intersection_normal))
- continue;
- f32 distanceSq = (intersection_point
- - state->m_shootline.start).getLengthSQ();
- // If this is the nearest collision, save it
- if (min_distance_sq > distanceSq) {
- min_distance_sq = distanceSq;
- result.intersection_point = intersection_point;
- result.intersection_normal = intersection_normal;
- found_boxcenter = box.getCenter();
- is_colliding = true;
- }
- }
- // If there wasn't a collision, stop
- if (!is_colliding) {
- continue;
- }
- result.type = POINTEDTHING_NODE;
- result.node_undersurface = np;
- result.distanceSq = min_distance_sq;
- // Set undersurface and abovesurface nodes
- f32 d = 0.002 * BS;
- v3f fake_intersection = result.intersection_point;
- // Move intersection towards its source block.
- if (fake_intersection.X < found_boxcenter.X) {
- fake_intersection.X += d;
- } else {
- fake_intersection.X -= d;
- }
- if (fake_intersection.Y < found_boxcenter.Y) {
- fake_intersection.Y += d;
- } else {
- fake_intersection.Y -= d;
- }
- if (fake_intersection.Z < found_boxcenter.Z) {
- fake_intersection.Z += d;
- } else {
- fake_intersection.Z -= d;
- }
- result.node_real_undersurface = floatToInt(
- fake_intersection, BS);
- result.node_abovesurface = result.node_real_undersurface
- + result.intersection_normal;
- // Push found PointedThing
- state->m_found.push(result);
- // If this is nearer than the old nearest object,
- // the search can be shorter
- s16 newIndex = state->m_iterator.getIndex(
- result.node_real_undersurface);
- if (newIndex < lastIndex) {
- lastIndex = newIndex;
- }
- }
- // Next node
- state->m_previous_node = state->m_iterator.m_current_node_pos;
- state->m_iterator.next();
- }
- // Return empty PointedThing if nothing left on the ray
- if (state->m_found.empty()) {
- result->type = POINTEDTHING_NOTHING;
- } else {
- *result = state->m_found.top();
- state->m_found.pop();
- }
- }
- void Environment::stepTimeOfDay(float dtime)
- {
- MutexAutoLock lock(this->m_time_lock);
- // Cached in order to prevent the two reads we do to give
- // different results (can be written by code not under the lock)
- f32 cached_time_of_day_speed = m_time_of_day_speed;
- f32 speed = cached_time_of_day_speed * 24000. / (24. * 3600);
- m_time_conversion_skew += dtime;
- u32 units = (u32)(m_time_conversion_skew * speed);
- bool sync_f = false;
- if (units > 0) {
- // Sync at overflow
- if (m_time_of_day + units >= 24000) {
- sync_f = true;
- ++m_day_count;
- }
- m_time_of_day = (m_time_of_day + units) % 24000;
- if (sync_f)
- m_time_of_day_f = (float)m_time_of_day / 24000.0;
- }
- if (speed > 0) {
- m_time_conversion_skew -= (f32)units / speed;
- }
- if (!sync_f) {
- m_time_of_day_f += cached_time_of_day_speed / 24 / 3600 * dtime;
- if (m_time_of_day_f > 1.0)
- m_time_of_day_f -= 1.0;
- if (m_time_of_day_f < 0.0)
- m_time_of_day_f += 1.0;
- }
- }
- u32 Environment::getDayCount()
- {
- // Atomic<u32> counter
- return m_day_count;
- }
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