src/content_cao.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 <ICameraSceneNode.h>
#include <ITextSceneNode.h>
#include <IBillboardSceneNode.h>
#include <IMeshManipulator.h>
#include <IAnimatedMeshSceneNode.h>
#include <IBoneSceneNode.h>
#include "content_cao.h"
#include "util/numeric.h" // For IntervalLimiter
#include "util/serialize.h"
#include "util/mathconstants.h"
#include "client/tile.h"
#include "environment.h"
#include "collision.h"
#include "settings.h"
#include "serialization.h" // For decompressZlib
#include "gamedef.h"
#include "clientobject.h"
#include "mesh.h"
#include "itemdef.h"
#include "tool.h"
#include "content_cso.h"
#include "sound.h"
#include "nodedef.h"
#include "localplayer.h"
#include "map.h"
#include "camera.h" // CameraModes
#include "wieldmesh.h"
#include "log.h"

class Settings;
struct ToolCapabilities;

#define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"

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

SmoothTranslator::SmoothTranslator():
	vect_old(0,0,0),
	vect_show(0,0,0),
	vect_aim(0,0,0),
	anim_counter(0),
	anim_time(0),
	anim_time_counter(0),
	aim_is_end(true)
{}

void SmoothTranslator::init(v3f vect)
{
	vect_old = vect;
	vect_show = vect;
	vect_aim = vect;
	anim_counter = 0;
	anim_time = 0;
	anim_time_counter = 0;
	aim_is_end = true;
}

void SmoothTranslator::sharpen()
{
	init(vect_show);
}

void SmoothTranslator::update(v3f vect_new, bool is_end_position, float update_interval)
{
	aim_is_end = is_end_position;
	vect_old = vect_show;
	vect_aim = vect_new;
	if(update_interval > 0)
	{
		anim_time = update_interval;
	} else {
		if(anim_time < 0.001 || anim_time > 1.0)
			anim_time = anim_time_counter;
		else
			anim_time = anim_time * 0.9 + anim_time_counter * 0.1;
	}
	anim_time_counter = 0;
	anim_counter = 0;
}

void SmoothTranslator::translate(f32 dtime)
{
	anim_time_counter = anim_time_counter + dtime;
	anim_counter = anim_counter + dtime;
	v3f vect_move = vect_aim - vect_old;
	f32 moveratio = 1.0;
	if(anim_time > 0.001)
		moveratio = anim_time_counter / anim_time;
	// Move a bit less than should, to avoid oscillation
	moveratio = moveratio * 0.8;
	float move_end = 1.5;
	if(aim_is_end)
		move_end = 1.0;
	if(moveratio > move_end)
		moveratio = move_end;
	vect_show = vect_old + vect_move * moveratio;
}

bool SmoothTranslator::is_moving()
{
	return ((anim_time_counter / anim_time) < 1.4);
}

/*
	Other stuff
*/

static void setBillboardTextureMatrix(scene::IBillboardSceneNode *bill,
		float txs, float tys, int col, int row)
{
	video::SMaterial& material = bill->getMaterial(0);
	core::matrix4& matrix = material.getTextureMatrix(0);
	matrix.setTextureTranslate(txs*col, tys*row);
	matrix.setTextureScale(txs, tys);
}

/*
	TestCAO
*/

class TestCAO : public ClientActiveObject
{
public:
	TestCAO(IGameDef *gamedef, ClientEnvironment *env);
	virtual ~TestCAO();

	ActiveObjectType getType() const
	{
		return ACTIVEOBJECT_TYPE_TEST;
	}

	static ClientActiveObject* create(IGameDef *gamedef, ClientEnvironment *env);

	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
			IrrlichtDevice *irr);
	void removeFromScene(bool permanent);
	void updateLight(u8 light_at_pos);
	v3s16 getLightPosition();
	void updateNodePos();

	void step(float dtime, ClientEnvironment *env);

	void processMessage(const std::string &data);

	bool getCollisionBox(aabb3f *toset) { return false; }
private:
	scene::IMeshSceneNode *m_node;
	v3f m_position;
};

// Prototype
TestCAO proto_TestCAO(NULL, NULL);

TestCAO::TestCAO(IGameDef *gamedef, ClientEnvironment *env):
	ClientActiveObject(0, gamedef, env),
	m_node(NULL),
	m_position(v3f(0,10*BS,0))
{
	ClientActiveObject::registerType(getType(), create);
}

TestCAO::~TestCAO()
{
}