src/serialization.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.
*/

#ifndef LOCALPLAYER_HEADER
#define LOCALPLAYER_HEADER

#include "player.h"
#include "environment.h"
#include <list>

class Client;
class Environment;
class GenericCAO;
class ClientActiveObject;
class IGameDef;

enum LocalPlayerAnimations {NO_ANIM, WALK_ANIM, DIG_ANIM, WD_ANIM};  // no local animation, walking, digging, both

class LocalPlayer : public Player
{
public:
	LocalPlayer(Client *client, const char *name);
	virtual ~LocalPlayer();

	ClientActiveObject *parent;

	u16 hp;
	bool got_teleported;
	bool isAttached;
	bool touching_ground;
	// This oscillates so that the player jumps a bit above the surface
	bool in_liquid;
	// This is more stable and defines the maximum speed of the player
	bool in_liquid_stable;
	// Gets the viscosity of water to calculate friction
	u8 liquid_viscosity;
	bool is_climbing;
	bool swimming_vertical;

	float physics_override_speed;
	float physics_override_jump;
	float physics_override_gravity;
	bool physics_override_sneak;
	bool physics_override_sneak_glitch;

	v3f overridePosition;

	void move
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 "serialization.h"

#include "util/serialize.h"
#if defined(_WIN32) && !defined(WIN32_NO_ZLIB_WINAPI)
	#define ZLIB_WINAPI
#endif
#include "zlib.h"

/* report a zlib or i/o error */
void zerr(int ret)
{   
    dstream<<"zerr: ";
    switch (ret) {
    case Z_ERRNO:
        if (ferror(stdin))
            dstream<<"error reading stdin"<<std::endl;
        if (ferror(stdout))
            dstream<<"error writing stdout"<<std::endl;
        break;
    case Z_STREAM_ERROR:
        dstream<<"invalid compression level"<<std::endl;
        break;
    case Z_DATA_ERROR:
        dstream<<"invalid or incomplete deflate data"<<std::endl;
        break;
    case Z_MEM_ERROR:
        dstream<<"out of memory"<<std::endl;
        break;
    case Z_VERSION_ERROR:
        dstream<<"zlib version mismatch!"<<std::endl;
		break;
	default:
		dstream<<"return value = "<<ret<<std::endl;
    }
}

void compressZlib(SharedBuffer<u8> data, std::ostream &os, int level)
{
	z_stream z;
	const s32 bufsize = 16384;
	char output_buffer[bufsize];
	int status = 0;
	int ret;

	z.zalloc = Z_NULL;
	z.zfree = Z_NULL;
	z.opaque = Z_NULL;

	ret = deflateInit(&z, level);
	if(ret != Z_OK)
		throw SerializationError("compressZlib: deflateInit failed");
	
	// Point zlib to our input buffer
	z.next_in = (Bytef*)&data[0];
	z.avail_in = data.getSize();
	// And get all output
	for(;;)
	{
		z.next_out = (Bytef*)output_buffer;
		z.avail_out = bufsize;
		
		status = deflate(&z, Z_FINISH);
		if(status == Z_NEED_DICT || status == Z_DATA_ERROR
				|| status == Z_MEM_ERROR)
		{
			zerr(status);
			throw SerializationError("compressZlib: deflate failed");
		}
		int count = bufsize - z