src/network/peerhandler.h


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/*
Minetest
Copyright (C) 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.
*/

#pragma once

#include "networkprotocol.h"

namespace con
{

typedef enum
{
	MIN_RTT,
	MAX_RTT,
	AVG_RTT,
	MIN_JITTER,
	MAX_JITTER,
	AVG_JITTER
} rtt_stat_type;

class Peer;

class PeerHandler
{
public:
	PeerHandler() = default;

	virtual ~PeerHandler() = default;

	/*
		This is called after the Peer has been inserted into the
		Connection's peer container.
	*/
	virtual void peerAdded(Peer *peer) = 0;

	/*
		This is called before the Peer has been removed from the
		Connection's peer container.
	*/
	virtual void deletingPeer(Peer *peer, bool timeout) = 0;
};

enum PeerChangeType : u8
{
	PEER_ADDED,
	PEER_REMOVED
};

struct PeerChange
{
	PeerChange(PeerChangeType t, session_t _peer_id, bool _timeout) :
			type(t), peer_id(_peer_id), timeout(_timeout)
	{
	}
	PeerChange() = delete;

	PeerChangeType type;
	session_t peer_id;
	bool timeout;
};
}
/*
Minetest-c55
Copyright (C) 2010 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 General Public License as published by
the Free Software Foundation; either version 2 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 General Public License for more details.

You should have received a copy of the GNU 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 "common_irrlicht.h"
#include "mapnode.h"
#include "tile.h"
#include "porting.h"
#include <string>
#include "mineral.h"
// For g_settings
#include "main.h"
#include "nodemetadata.h"

ContentFeatures::~ContentFeatures()
{
	if(translate_to)
		delete translate_to;
	if(initial_metadata)
		delete initial_metadata;
}

void ContentFeatures::setTexture(u16 i, std::string name, u8 alpha)
{
	if(g_texturesource)
	{
		tiles[i].texture = g_texturesource->getTexture(name);
	}
	
	if(alpha != 255)
	{
		tiles[i].alpha = alpha;
		tiles[i].material_type = MATERIAL_ALPHA_VERTEX;
	}

	if(inventory_texture == NULL)
		setInventoryTexture(name);
}

void ContentFeatures::setInventoryTexture(std::string imgname)
{
	if(g_texturesource == NULL)
		return;
	
	imgname += "^[forcesingle";
	
	inventory_texture = g_texturesource->getTextureRaw(imgname);
}

void ContentFeatures::setInventoryTextureCube(std::string top,
		std::string left, std::string right)
{
	if(g_texturesource == NULL)
		return;
	
	str_replace_char(top, '^', '&');
	str_replace_char(left, '^', '&');
	str_replace_char(right, '^', '&');

	std::string imgname_full;
	imgname_full += "[inventorycube{";
	imgname_full += top;
	imgname_full += "{";
	imgname_full += left;
	imgname_full += "{";
	imgname_full += right;
	inventory_texture = g_texturesource->getTextureRaw(imgname_full);
}

struct ContentFeatures g_content_features[256];

ContentFeatures & content_features(u8 i)
{
	return g_content_features[i];
}

/*
	See mapnode.h for description.
*/
void init_mapnode()
{
	if(g_texturesource == NULL)
	{
		dstream<<"INFO: Initial run of init_mapnode with "
				"g_texturesource=NULL. If this segfaults, "
				"there is a bug with something not checking for "
				"the NULL value."<<std::endl;
	}
	else
	{
		dstream<<"INFO: Full run of init_mapnode with "
				"g_texturesource!=NULL"<<std::endl;
	}

	// Read some settings
	bool new_style_water = g_settings.getBool("new_style_water");
	bool new_style_leaves = g_settings.getBool("new_style_leaves");

	/*
		Initialize content feature table
	*/
	
	/*
		Set initial material type to same in all tiles, so that the
		same material can be used in more stuff.
		This is set according to the leaves because they are the only
		differing material to which all materials can be changed to
		get this optimization.
	*/
	u8 initial_material_type = MATERIAL_ALPHA_SIMPLE;
	/*if(new_style_leaves)
		initial_material_type = MATERIAL_ALPHA_SIMPLE;
	else
		initial_material_type = MATERIAL_ALPHA_NONE;*/
	for(u16 i=0; i<256; i++)
	{
		ContentFeatures *f = &g_content_features[i];
		// Re-initialize
		*f = ContentFeatures();

		for(u16 j=0; j<6; j++)
			f->tiles[j].material_type = initial_material_type;
	}
	
	u8 i;
	ContentFeatures *f = NULL;

	i = CONTENT_STONE;
	f = &g_content_features[i];
	f->setAllTextures("stone.png");
	f->setInventoryTextureCube("stone.png", "stone.png", "stone.png");
	f->param_type = CPT_MINERAL;
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(CONTENT_COBBLE)+" 1";
	
	i = CONTENT_GRASS;
	f = &g_content_features[i];
	f->setAllTextures("mud.png^grass_side.png");
	f->setTexture(0, "grass.png");
	f->setTexture(1, "mud.png");
	f->param_type = CPT_MINERAL;
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(CONTENT_MUD)+" 1";
	
	i = CONTENT_GRASS_FOOTSTEPS;
	f = &g_content_features[i];
	f->setAllTextures("mud.png^grass_side.png");
	f->setTexture(0, "grass_footsteps.png");
	f->setTexture(1, "mud.png");
	f->param_type = CPT_MINERAL;
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(CONTENT_MUD)+" 1";
	
	i = CONTENT_MUD;
	f = &g_content_features[i];
	f->setAllTextures("mud.png");
	f->setInventoryTextureCube("mud.png", "mud.png", "mud.png");
	f->param_type = CPT_MINERAL;
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
	
	i = CONTENT_SAND;
	f = &g_content_features[i];
	f->setAllTextures("sand.png");
	f->param_type = CPT_MINERAL;
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
	
	i = CONTENT_TREE;
	f = &g_content_features[i];
	f->setAllTextures("tree.png");
	f->setTexture(0, "tree_top.png");
	f->setTexture(1, "tree_top.png");
	f->param_type = CPT_MINERAL;
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
	
	i = CONTENT_LEAVES;
	f = &g_content_features[i];
	f->light_propagates = true;
	//f->param_type = CPT_MINERAL;
	f->param_type = CPT_LIGHT;
	f->is_ground_content = true;
	if(new_style_leaves)
	{
		f->solidness = 0; // drawn separately, makes no faces
		f->setInventoryTextureCube("leaves.png", "leaves.png", "leaves.png");
	}
	else
	{
		f->setAllTextures("[noalpha:leaves.png");
	}
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";

	i = CONTENT_GLASS;
	f = &g_content_features[i];
	f->light_propagates = true;
	f->param_type = CPT_LIGHT;
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
	f->solidness = 0; // drawn separately, makes no faces
	f->setInventoryTextureCube("glass.png", "glass.png", "glass.png");

	i = CONTENT_FENCE;
	f = &g_content_features[i];
	f->light_propagates = true;
	f->param_type = CPT_LIGHT;
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
	f->solidness = 0; // drawn separately, makes no faces
	f->air_equivalent = true; // grass grows underneath
	f->setInventoryTexture("item_fence.png");

	// Deprecated
	i = CONTENT_COALSTONE;
	f = &g_content_features[i];
	//f->translate_to = new MapNode(CONTENT_STONE, MINERAL_COAL);
	f->setAllTextures("stone.png^mineral_coal.png");
	f->is_ground_content = true;
	
	i = CONTENT_WOOD;
	f = &g_content_features[i];
	f->setAllTextures("wood.png");
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
	
	i = CONTENT_MESE;
	f = &g_content_features[i];
	f->setAllTextures("mese.png");
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
	
	i = CONTENT_CLOUD;
	f = &g_content_features[i];
	f->setAllTextures("cloud.png");
	f->is_ground_content = true;
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
	
	i = CONTENT_AIR;
	f = &g_content_features[i];
	f->param_type = CPT_LIGHT;
	f->light_propagates = true;
	f->sunlight_propagates = true;
	f->solidness = 0;
	f->walkable = false;
	f->pointable = false;
	f->diggable = false;
	f->buildable_to = true;
	f->air_equivalent = true;
	
	i = CONTENT_WATER;
	f = &g_content_features[i];
	f->setInventoryTextureCube("water.png", "water.png", "water.png");
	f->param_type = CPT_LIGHT;
	f->light_propagates = true;
	f->solidness = 0; // Drawn separately, makes no faces
	f->walkable = false;
	f->pointable = false;
	f->diggable = false;
	f->buildable_to = true;
	f->liquid_type = LIQUID_FLOWING;
	
	i = CONTENT_WATERSOURCE;
	f = &g_content_features[i];
	f->setInventoryTexture("water.png");
	if(new_style_water)
	{
		f->solidness = 0; // drawn separately, makes no faces
	}
	else // old style
	{
		f->solidness = 1;

		TileSpec t;
		if(g_texturesource)
			t.texture = g_texturesource->getTexture("water.png");
		
		t.alpha = WATER_ALPHA;
		t.material_type = MATERIAL_ALPHA_VERTEX;
		t.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
		f->setAllTiles(t);
	}
	f->param_type = CPT_LIGHT;
	f->light_propagates = true;
	f->walkable = false;
	f->pointable = false;
	f->diggable = false;
	f->buildable_to = true;
	f->liquid_type = LIQUID_SOURCE;
	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
	
	i = CONTENT_TORCH;
	f = &g_content_features[i];
	f->setInventoryTexture("torch_on_floor.png");
	f->param_type = CPT_LIGHT;
	f->light_propagates = true;
	f->sunlight_propagates = true;
	f->solidness = 0; // drawn separately, makes no faces
	f->walkable = false;
	f->wall_mounted = true;
	f->air_equivalent = true;