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authorBlockhead <jbis1337@hotmail.com>2020-03-03 22:59:04 +1100
committerBlockhead <jbis1337@hotmail.com>2020-03-03 23:00:20 +1100
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Delete train if it ends up off track, show a warning
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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 "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_cache_abm_time_budget = g_settings->getFloat("abm_time_budget");

	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;
}

bool Environment::line_of_sight(v3f pos1, v3f pos2, v3s16 *p)
{
	// Iterate trough nodes on the line
	voxalgo::VoxelLineIterator iterator(pos1 / BS, (pos2 - pos1) / BS);
	do {
		MapNode n = getMap().getNode(iterator.m_current_node_pos);

		// Return non-air
		if (n.param0 != CONTENT_AIR) {
			if (p)
				*p = iterator.m_current_node_pos;
			return false;
		}
		iterator.next();
	} while (iterator.m_current_index <= iterator.m_last_index);
	return true;
}

/*
	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