3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #include "environment.h"
22 #include "collision.h"
23 #include "serverobject.h"
24 #include "scripting_game.h"
26 #include "daynightratio.h"
29 Environment::Environment():
30 m_time_of_day_speed(0),
32 m_time_of_day_f(9000./24000),
33 m_time_conversion_skew(0.0f),
34 m_enable_day_night_ratio_override(false),
35 m_day_night_ratio_override(0.0f)
37 m_cache_enable_shaders = g_settings->getBool("enable_shaders");
38 m_cache_active_block_mgmt_interval = g_settings->getFloat("active_block_mgmt_interval");
39 m_cache_abm_interval = g_settings->getFloat("abm_interval");
40 m_cache_nodetimer_interval = g_settings->getFloat("nodetimer_interval");
43 Environment::~Environment()
47 u32 Environment::getDayNightRatio()
49 MutexAutoLock lock(this->m_time_lock);
50 if (m_enable_day_night_ratio_override)
51 return m_day_night_ratio_override;
52 return time_to_daynight_ratio(m_time_of_day_f * 24000, m_cache_enable_shaders);
55 void Environment::setTimeOfDaySpeed(float speed)
57 m_time_of_day_speed = speed;
60 void Environment::setDayNightRatioOverride(bool enable, u32 value)
62 MutexAutoLock lock(this->m_time_lock);
63 m_enable_day_night_ratio_override = enable;
64 m_day_night_ratio_override = value;
67 void Environment::setTimeOfDay(u32 time)
69 MutexAutoLock lock(this->m_time_lock);
70 if (m_time_of_day > time)
73 m_time_of_day_f = (float)time / 24000.0;
76 u32 Environment::getTimeOfDay()
78 MutexAutoLock lock(this->m_time_lock);
82 float Environment::getTimeOfDayF()
84 MutexAutoLock lock(this->m_time_lock);
85 return m_time_of_day_f;
88 void Environment::stepTimeOfDay(float dtime)
90 MutexAutoLock lock(this->m_time_lock);
92 // Cached in order to prevent the two reads we do to give
93 // different results (can be written by code not under the lock)
94 f32 cached_time_of_day_speed = m_time_of_day_speed;
96 f32 speed = cached_time_of_day_speed * 24000. / (24. * 3600);
97 m_time_conversion_skew += dtime;
98 u32 units = (u32)(m_time_conversion_skew * speed);
102 if (m_time_of_day + units >= 24000) {
106 m_time_of_day = (m_time_of_day + units) % 24000;
108 m_time_of_day_f = (float)m_time_of_day / 24000.0;
111 m_time_conversion_skew -= (f32)units / speed;
114 m_time_of_day_f += cached_time_of_day_speed / 24 / 3600 * dtime;
115 if (m_time_of_day_f > 1.0)
116 m_time_of_day_f -= 1.0;
117 if (m_time_of_day_f < 0.0)
118 m_time_of_day_f += 1.0;
122 u32 Environment::getDayCount()
124 // Atomic<u32> counter