src/content_sao.cpp


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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 "content_sao.h"
#include "util/serialize.h"
#include "collision.h"
#include "environment.h"
#include "tool.h" // For ToolCapabilities
#include "gamedef.h"
#include "nodedef.h"
#include "remoteplayer.h"
#include "server.h"
#include "scripting_server.h"
#include "genericobject.h"

std::map<u16, ServerActiveObject::Factory> ServerActiveObject::m_types;

/*
	TestSAO
*/

class TestSAO : public ServerActiveObject
{
public:
	TestSAO(ServerEnvironment *env, v3f pos):
		ServerActiveObject(env, pos),
		m_timer1(0),
		m_age(0)
	{
		ServerActiveObject::registerType(getType(), create);
	}
	ActiveObjectType getType() const
	{ return ACTIVEOBJECT_TYPE_TEST; }

	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
			const std::string &data)
	{
		return new TestSAO(env, pos);
	}

	void step(float dtime, bool send_recommended)
	{
		m_age += dtime;
		if(m_age > 10)
		{
			m_removed = true;
			return;
		}

		m_base_position.Y += dtime * BS * 2;
		if(m_base_position.Y > 8*BS)
			m_base_position.Y = 2*BS;

		if (!send_recommended)
			return;

		m_timer1 -= dtime;
		if(m_timer1 < 0.0)
		{
			m_timer1 += 0.125;

			std::string data;

			data += itos(0); // 0 = position
			data += " ";
			data += itos(m_base_position.X);
			data += " ";
			data += itos(m_base_position.Y);
			data += " ";
			data += itos(m_base_position.Z);

			ActiveObjectMessage aom(getId(), false, data);
			m_messages_out.push(aom);
		}
	}

	bool getCollisionBox(aabb3f *toset) const { return false; }

	virtual bool getSelectionBox(aabb3f *toset) const { return false; }

	bool collideWithObjects() const { return false; }

private:
	float m_timer1;
	float m_age;
};

// Prototype (registers item for deserialization)
TestSAO proto_TestSAO(NULL, v3f(0,0,0));

/*
	UnitSAO
 */

UnitSAO::UnitSAO(ServerEnvironment *env, v3f pos):
	ServerActiveObject(env, pos)
{
	// Initialize something to armor groups
	m_armor_groups["fleshy"] = 100;
}

bool UnitSAO::isAttached() const
{
	if (!m_attachment_parent_id)
		return false;
	// Check if the parent still exists
	ServerActiveObject *obj = m_env->getActiveObject(m_attachment_parent_id);
	if (obj)
		return true;
	return false;
}

void UnitSAO::setArmorGroups(const ItemGroupList &armor_groups)
{
	m_armor_groups = armor_groups;
	m_armor_groups_sent = false;
}

const ItemGroupList &UnitSAO::getArmorGroups()
{
	return m_armor_groups;
}

void UnitSAO::setAnimation(v2f frame_range, float frame_speed, float frame_blend, bool frame_loop)
{
	// store these so they can be updated to clients
	m_animation_range = frame_range;
	m_animation_speed = frame_speed;
	m_animation_blend = frame_blend;
	m_animation_loop = frame_loop;
	m_animation_sent = false;
}

void UnitSAO::getAnimation(v2f *frame_range, float *frame_speed, float *frame_blend, bool *frame_loop)
{
	*frame_range = m_animation_range;
	*frame_speed = m_animation_speed;
	*frame_blend = m_animation_blend;
	*frame_loop = m_animation_loop;
}

void UnitSAO::setBonePosition(const std::string &bone, v3f position, v3f rotation)
{
	// store these so they can be updated to clients
	m_bone_position[bone] = core::vector2d<v3f>(position, rotation);
	m_bone_position_sent = false;
}

void UnitSAO::getBonePosition(const std::string &bone, v3f *position, v3f *rotation)
{
	*position = m_bone_position[bone].X;
	*rotation = m_bone_position[bone].Y;
}

void UnitSAO::setAttachment(int parent_id, const std::string &bone, v3f position, v3f rotation)
{
	// Attachments need to be handled on both the server and client.
	// If we just attach on the server, we can only copy the position of the parent. Attachments
	// are still sent to clients at an interval so players might see them lagging, plus we can't
	// read and attach to skeletal bones.
	// If we just attach on the client, the server still sees the child at its original location.
	// This breaks some things so we also give the server the most accurate representation
	// even if players only see the client changes.

	m_attachment_parent_id = parent_id;
	m_attachment_bone = bone;
	m_attachment_position = position;
	m_attachment_rotation = rotation;
	m_attachment_sent = false;
}

void UnitSAO::getAttachment(int *parent_id, std::string *bone, v3f *position,
	v3f *rotation)
{
	*parent_id = m_attachment_parent_id;
	*bone = m_attachment_bone;
	*position = m_attachment_position;
	*rotation = m_attachment_rotation;
}

void UnitSAO::addAttachmentChild(int child_id)
{
	m_attachment_child_ids.insert(child_id);
}