Move client-specific files to 'src/client' (#7902)

Update Android.mk
Remove 'src/client' from include_directories

src/client/clientenvironment.cpp

@@ -0,0 +1,540 @@
+/*
+Minetest
+Copyright (C) 2010-2017 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 "util/serialize.h"
+#include "util/pointedthing.h"
+#include "client.h"
+#include "clientenvironment.h"
+#include "clientsimpleobject.h"
+#include "clientmap.h"
+#include "scripting_client.h"
+#include "mapblock_mesh.h"
+#include "event.h"
+#include "collision.h"
+#include "nodedef.h"
+#include "profiler.h"
+#include "raycast.h"
+#include "voxelalgorithms.h"
+#include "settings.h"
+#include "content_cao.h"
+#include <algorithm>
+#include "client/renderingengine.h"
+
+/*
+	ClientEnvironment
+*/
+
+ClientEnvironment::ClientEnvironment(ClientMap *map,
+	ITextureSource *texturesource, Client *client):
+	Environment(client),
+	m_map(map),
+	m_texturesource(texturesource),
+	m_client(client)
+{
+	char zero = 0;
+	memset(attachement_parent_ids, zero, sizeof(attachement_parent_ids));
+}
+
+ClientEnvironment::~ClientEnvironment()
+{
+	// delete active objects
+	for (auto &active_object : m_active_objects) {
+		delete active_object.second;
+	}
+
+	for (auto &simple_object : m_simple_objects) {
+		delete simple_object;
+	}
+
+	// Drop/delete map
+	m_map->drop();
+
+	delete m_local_player;
+}
+
+Map & ClientEnvironment::getMap()
+{
+	return *m_map;
+}
+
+ClientMap & ClientEnvironment::getClientMap()
+{
+	return *m_map;
+}
+
+void ClientEnvironment::setLocalPlayer(LocalPlayer *player)
+{
+	/*
+		It is a failure if already is a local player
+	*/
+	FATAL_ERROR_IF(m_local_player != NULL,
+		"Local player already allocated");
+
+	m_local_player = player;
+}
+
+void ClientEnvironment::step(float dtime)
+{
+	/* Step time of day */
+	stepTimeOfDay(dtime);
+
+	// Get some settings
+	bool fly_allowed = m_client->checkLocalPrivilege("fly");
+	bool free_move = fly_allowed && g_settings->getBool("free_move");
+
+	// Get local player
+	LocalPlayer *lplayer = getLocalPlayer();
+	assert(lplayer);
+	// collision info queue
+	std::vector<CollisionInfo> player_collisions;
+
+	/*
+		Get the speed the player is going
+	*/
+	bool is_climbing = lplayer->is_climbing;
+
+	f32 player_speed = lplayer->getSpeed().getLength();
+
+	/*
+		Maximum position increment
+	*/
+	//f32 position_max_increment = 0.05*BS;
+	f32 position_max_increment = 0.1*BS;
+
+	// Maximum time increment (for collision detection etc)
+	// time = distance / speed
+	f32 dtime_max_increment = 1;
+	if(player_speed > 0.001)
+		dtime_max_increment = position_max_increment / player_speed;
+
+	// Maximum time increment is 10ms or lower
+	if(dtime_max_increment > 0.01)
+		dtime_max_increment = 0.01;
+
+	// Don't allow overly huge dtime
+	if(dtime > 0.5)
+		dtime = 0.5;
+
+	f32 dtime_downcount = dtime;
+
+	/*
+		Stuff that has a maximum time increment
+	*/
+
+	u32 loopcount = 0;
+	do
+	{
+		loopcount++;
+
+		f32 dtime_part;
+		if(dtime_downcount > dtime_max_increment)
+		{
+			dtime_part = dtime_max_increment;
+			dtime_downcount -= dtime_part;
+		}
+		else
+		{
+			dtime_part = dtime_downcount;
+			/*
+				Setting this to 0 (no -=dtime_part) disables an infinite loop
+				when dtime_part is so small that dtime_downcount -= dtime_part
+				does nothing
+			*/
+			dtime_downcount = 0;
+		}
+
+		/*
+			Handle local player
+		*/
+
+		{
+			// Apply physics
+			if (!free_move && !is_climbing) {
+				// Gravity
+				v3f speed = lplayer->getSpeed();
+				if (!lplayer->in_liquid)
+					speed.Y -= lplayer->movement_gravity *
+						lplayer->physics_override_gravity * dtime_part * 2.0f;
+
+				// Liquid floating / sinking
+				if (lplayer->in_liquid && !lplayer->swimming_vertical)
+					speed.Y -= lplayer->movement_liquid_sink * dtime_part * 2.0f;
+
+				// Liquid resistance
+				if (lplayer->in_liquid_stable || lplayer->in_liquid) {
+					// How much the node's viscosity blocks movement, ranges
+					// between 0 and 1. Should match the scale at which viscosity
+					// increase affects other liquid attributes.
+					static const f32 viscosity_factor = 0.3f;
+
+					v3f d_wanted = -speed / lplayer->movement_liquid_fluidity;
+					f32 dl = d_wanted.getLength();
+					if (dl > lplayer->movement_liquid_fluidity_smooth)
+						dl = lplayer->movement_liquid_fluidity_smooth;
+
+					dl *= (lplayer->liquid_viscosity * viscosity_factor) +
+						(1 - viscosity_factor);
+					v3f d = d_wanted.normalize() * (dl * dtime_part * 100.0f);
+					speed += d;
+				}
+
+				lplayer->setSpeed(speed);
+			}
+
+			/*
+				Move the lplayer.
+				This also does collision detection.
+			*/
+			lplayer->move(dtime_part, this, position_max_increment,
+				&player_collisions);
+		}
+	} while (dtime_downcount > 0.001);
+
+	bool player_immortal = lplayer->getCAO() && lplayer->getCAO()->isImmortal();
+
+	for (const CollisionInfo &info : player_collisions) {
+		v3f speed_diff = info.new_speed - info.old_speed;;
+		// Handle only fall damage
+		// (because otherwise walking against something in fast_move kills you)
+		if (speed_diff.Y < 0 || info.old_speed.Y >= 0)
+			continue;
+		// Get rid of other components
+		speed_diff.X = 0;
+		speed_diff.Z = 0;
+		f32 pre_factor = 1; // 1 hp per node/s
+		f32 tolerance = BS*14; // 5 without damage
+		f32 post_factor = 1; // 1 hp per node/s
+		if (info.type == COLLISION_NODE) {
+			const ContentFeatures &f = m_client->ndef()->
+				get(m_map->getNodeNoEx(info.node_p));
+			// Determine fall damage multiplier
+			int addp = itemgroup_get(f.groups, "fall_damage_add_percent");
+			pre_factor = 1.0f + (float)addp / 100.0f;
+		}
+		float speed = pre_factor * speed_diff.getLength();
+		if (speed > tolerance && !player_immortal) {
+			f32 damage_f = (speed - tolerance) / BS * post_factor;
+			u8 damage = (u8)MYMIN(damage_f + 0.5, 255);
+			if (damage != 0) {
+				damageLocalPlayer(damage, true);
+				m_client->getEventManager()->put(
+					new SimpleTriggerEvent(MtEvent::PLAYER_FALLING_DAMAGE));
+			}
+		}
+	}
+
+	if (m_client->modsLoaded())
+		m_script->environment_step(dtime);
+
+	// Update lighting on local player (used for wield item)
+	u32 day_night_ratio = getDayNightRatio();
+	{
+		// Get node at head
+
+		// On InvalidPositionException, use this as default
+		// (day: LIGHT_SUN, night: 0)
+		MapNode node_at_lplayer(CONTENT_AIR, 0x0f, 0);
+
+		v3s16 p = lplayer->getLightPosition();
+		node_at_lplayer = m_map->getNodeNoEx(p);
+
+		u16 light = getInteriorLight(node_at_lplayer, 0, m_client->ndef());
+		final_color_blend(&lplayer->light_color, light, day_night_ratio);
+	}
+
+	/*
+		Step active objects and update lighting of them
+	*/
+
+	g_profiler->avg("CEnv: num of objects", m_active_objects.size());
+	bool update_lighting = m_active_object_light_update_interval.step(dtime, 0.21);
+	for (auto &ao_it : m_active_objects) {
+		ClientActiveObject* obj = ao_it.second;
+		// Step object
+		obj->step(dtime, this);
+
+		if (update_lighting) {
+			// Update lighting
+			u8 light = 0;
+			bool pos_ok;
+
+			// Get node at head
+			v3s16 p = obj->getLightPosition();
+			MapNode n = m_map->getNodeNoEx(p, &pos_ok);
+			if (pos_ok)
+				light = n.getLightBlend(day_night_ratio, m_client->ndef());
+			else
+				light = blend_light(day_night_ratio, LIGHT_SUN, 0);
+
+			obj->updateLight(light);
+		}
+	}
+
+	/*
+		Step and handle simple objects
+	*/
+	g_profiler->avg("CEnv: num of simple objects", m_simple_objects.size());
+	for (auto i = m_simple_objects.begin(); i != m_simple_objects.end();) {
+		auto cur = i;
+		ClientSimpleObject *simple = *cur;
+
+		simple->step(dtime);
+		if(simple->m_to_be_removed) {
+			delete simple;
+			i = m_simple_objects.erase(cur);
+		}
+		else {
+			++i;
+		}
+	}
+}
+
+void ClientEnvironment::addSimpleObject(ClientSimpleObject *simple)
+{
+	m_simple_objects.push_back(simple);
+}
+
+GenericCAO* ClientEnvironment::getGenericCAO(u16 id)
+{
+	ClientActiveObject *obj = getActiveObject(id);
+	if (obj && obj->getType() == ACTIVEOBJECT_TYPE_GENERIC)
+		return (GenericCAO*) obj;
+
+	return NULL;
+}
+
+ClientActiveObject* ClientEnvironment::getActiveObject(u16 id)
+{
+	auto n = m_active_objects.find(id);
+	if (n == m_active_objects.end())
+		return NULL;
+	return n->second;
+}
+
+bool isFreeClientActiveObjectId(const u16 id,
+	ClientActiveObjectMap &objects)
+{
+	return id != 0 && objects.find(id) == objects.end();
+
+}
+
+u16 getFreeClientActiveObjectId(ClientActiveObjectMap &objects)
+{
+	//try to reuse id's as late as possible
+	static u16 last_used_id = 0;
+	u16 startid = last_used_id;
+	for(;;) {
+		last_used_id ++;
+		if (isFreeClientActiveObjectId(last_used_id, objects))
+			return last_used_id;
+
+		if (last_used_id == startid)
+			return 0;
+	}
+}
+
+u16 ClientEnvironment::addActiveObject(ClientActiveObject *object)
+{
+	assert(object); // Pre-condition
+	if(object->getId() == 0)
+	{
+		u16 new_id = getFreeClientActiveObjectId(m_active_objects);
+		if(new_id == 0)
+		{
+			infostream<<"ClientEnvironment::addActiveObject(): "
+				<<"no free ids available"<<std::endl;
+			delete object;
+			return 0;
+		}
+		object->setId(new_id);
+	}
+	if (!isFreeClientActiveObjectId(object->getId(), m_active_objects)) {
+		infostream<<"ClientEnvironment::addActiveObject(): "
+			<<"id is not free ("<<object->getId()<<")"<<std::endl;
+		delete object;
+		return 0;
+	}
+	infostream<<"ClientEnvironment::addActiveObject(): "
+		<<"added (id="<<object->getId()<<")"<<std::endl;
+	m_active_objects[object->getId()] = object;
+	object->addToScene(m_texturesource);
+	{ // Update lighting immediately
+		u8 light = 0;
+		bool pos_ok;
+
+		// Get node at head
+		v3s16 p = object->getLightPosition();
+		MapNode n = m_map->getNodeNoEx(p, &pos_ok);
+		if (pos_ok)
+			light = n.getLightBlend(getDayNightRatio(), m_client->ndef());
+		else
+			light = blend_light(getDayNightRatio(), LIGHT_SUN, 0);
+
+		object->updateLight(light);
+	}
+	return object->getId();
+}
+
+void ClientEnvironment::addActiveObject(u16 id, u8 type,
+	const std::string &init_data)
+{
+	ClientActiveObject* obj =
+		ClientActiveObject::create((ActiveObjectType) type, m_client, this);
+	if(obj == NULL)
+	{
+		infostream<<"ClientEnvironment::addActiveObject(): "
+			<<"id="<<id<<" type="<<type<<": Couldn't create object"
+			<<std::endl;
+		return;
+	}
+
+	obj->setId(id);
+
+	try
+	{
+		obj->initialize(init_data);
+	}
+	catch(SerializationError &e)
+	{
+		errorstream<<"ClientEnvironment::addActiveObject():"
+			<<" id="<<id<<" type="<<type
+			<<": SerializationError in initialize(): "
+			<<e.what()
+			<<": init_data="<<serializeJsonString(init_data)
+			<<std::endl;
+	}
+
+	addActiveObject(obj);
+}
+
+void ClientEnvironment::removeActiveObject(u16 id)
+{
+	verbosestream<<"ClientEnvironment::removeActiveObject(): "
+		<<"id="<<id<<std::endl;
+	ClientActiveObject* obj = getActiveObject(id);
+	if (obj == NULL) {
+		infostream<<"ClientEnvironment::removeActiveObject(): "
+			<<"id="<<id<<" not found"<<std::endl;
+		return;
+	}
+	obj->removeFromScene(true);
+	delete obj;
+	m_active_objects.erase(id);
+}
+
+void ClientEnvironment::processActiveObjectMessage(u16 id, const std::string &data)
+{
+	ClientActiveObject *obj = getActiveObject(id);
+	if (obj == NULL) {
+		infostream << "ClientEnvironment::processActiveObjectMessage():"
+			<< " got message for id=" << id << ", which doesn't exist."
+			<< std::endl;
+		return;
+	}
+
+	try {
+		obj->processMessage(data);
+	} catch (SerializationError &e) {
+		errorstream<<"ClientEnvironment::processActiveObjectMessage():"
+			<< " id=" << id << " type=" << obj->getType()
+			<< " SerializationError in processMessage(): " << e.what()
+			<< std::endl;
+	}
+}
+
+/*
+	Callbacks for activeobjects
+*/
+
+void ClientEnvironment::damageLocalPlayer(u8 damage, bool handle_hp)
+{
+	LocalPlayer *lplayer = getLocalPlayer();
+	assert(lplayer);
+
+	if (handle_hp) {
+		if (lplayer->hp > damage)
+			lplayer->hp -= damage;
+		else
+			lplayer->hp = 0;
+	}
+
+	ClientEnvEvent event;
+	event.type = CEE_PLAYER_DAMAGE;
+	event.player_damage.amount = damage;
+	event.player_damage.send_to_server = handle_hp;
+	m_client_event_queue.push(event);
+}
+
+/*
+	Client likes to call these
+*/
+
+void ClientEnvironment::getActiveObjects(v3f origin, f32 max_d,
+	std::vector<DistanceSortedActiveObject> &dest)
+{
+	for (auto &ao_it : m_active_objects) {
+		ClientActiveObject* obj = ao_it.second;
+
+		f32 d = (obj->getPosition() - origin).getLength();
+
+		if (d > max_d)
+			continue;
+
+		dest.emplace_back(obj, d);
+	}
+}
+
+ClientEnvEvent ClientEnvironment::getClientEnvEvent()
+{
+	FATAL_ERROR_IF(m_client_event_queue.empty(),
+			"ClientEnvironment::getClientEnvEvent(): queue is empty");
+
+	ClientEnvEvent event = m_client_event_queue.front();
+	m_client_event_queue.pop();
+	return event;
+}
+
+void ClientEnvironment::getSelectedActiveObjects(
+	const core::line3d<f32> &shootline_on_map,
+	std::vector<PointedThing> &objects)
+{
+	std::vector<DistanceSortedActiveObject> allObjects;
+	getActiveObjects(shootline_on_map.start,
+		shootline_on_map.getLength() + 10.0f, allObjects);
+	const v3f line_vector = shootline_on_map.getVector();
+
+	for (const auto &allObject : allObjects) {
+		ClientActiveObject *obj = allObject.obj;
+		aabb3f selection_box;
+		if (!obj->getSelectionBox(&selection_box))
+			continue;
+
+		const v3f &pos = obj->getPosition();
+		aabb3f offsetted_box(selection_box.MinEdge + pos,
+			selection_box.MaxEdge + pos);
+
+		v3f current_intersection;
+		v3s16 current_normal;
+		if (boxLineCollision(offsetted_box, shootline_on_map.start, line_vector,
+				&current_intersection, &current_normal)) {
+			objects.emplace_back((s16) obj->getId(), current_intersection, current_normal,
+				(current_intersection - shootline_on_map.start).getLengthSQ());
+		}
+	}
+}