textures/mobs_horsepeg.png

/*
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.
*/

/*
(c) 2010 Perttu Ahola <celeron55@gmail.com>
*/

#include "inventory.h"
#include "serialization.h"
#include "utility.h"
#include "debug.h"
#include <sstream>
#include "main.h"
#include "serverobject.h"
#include "content_mapnode.h"
#include "content_inventory.h"
#include "content_sao.h"
#include "player.h"

/*
	InventoryItem
*/

InventoryItem::InventoryItem(u16 count)
{
	m_count = count;
}

InventoryItem::~InventoryItem()
{
}

InventoryItem* InventoryItem::deSerialize(std::istream &is)
{
	DSTACK(__FUNCTION_NAME);

	//is.imbue(std::locale("C"));
	// Read name
	std::string name;
	std::getline(is, name, ' ');
	
	if(name == "MaterialItem")
	{
		// u16 reads directly as a number (u8 doesn't)
		u16 material;
		is>>material;
		u16 count;
		is>>count;
		if(material > MAX_CONTENT)
			throw SerializationError("Too large material number");
		return new MaterialItem(material, count);
	}
	else if(name == "MBOItem")
	{
		std::string inventorystring;
		std::getline(is, inventorystring, '|');
		return new MapBlockObjectItem(inventorystring);
	}
	else if(name == "CraftItem")
	{
		std::string subname;
		std::getline(is, subname, ' ');
		u16 count;
		is>>count;
		return new CraftItem(subname, count);
	}
	else if(name == "ToolItem")
	{
		std::string toolname;
		std::getline(is, toolname, ' ');
		u16 wear;
		is>>wear;
		return new ToolItem(toolname, wear);
	}
	else
	{
		dstream<<"Unknown InventoryItem name=\""<<name<<"\""<<std::endl;
		throw SerializationError("Unknown InventoryItem name");
	}
}

ServerActiveObject* InventoryItem::createSAO(ServerEnvironment *env, u16 id, v3f pos)
{
	/*
		Create an ItemSAO
	*/
	// Get item string
	std::ostringstream os(std::ios_base::binary);
	serialize(os);
	// Create object
	ServerActiveObject *obj = new ItemSAO(env, 0, pos, os.str());
	return obj;
}

/*
	MaterialItem
*/

bool MaterialItem::isCookable()
{
	return item_material_is_cookable(m_content);
}

InventoryItem *MaterialItem::createCookResult()
{
	return item_material_create_cook_result(m_content);
}

/*
	CraftItem
*/

#ifndef SERVER
video::ITexture * CraftItem::getImage()
{
	if(g_texturesource == NULL)
		return NULL;
	
	std::string name = item_craft_get_image_name(m_subname);

	// Get such a texture
	return g_texturesource->getTextureRaw(name);
}
#endif

ServerActiveObject* CraftItem::createSAO(ServerEnvironment *env, u16 id, v3f pos)
{
	// Special cases
	ServerActiveObject *obj = item_craft_create_object(m_subname, env, id, pos);
	if(obj)
		return obj;
	// Default
	return InventoryItem::createSAO(env, id, pos);
}

u16 CraftItem::getDropCount()
{
	// Special cases
	s16 dc = item_craft_get_drop_count(m_subname);
	if(dc != -1)
		return dc;
	// Default
	return InventoryItem::getDropCount();
}

bool CraftItem::isCookable()
{
	return item_craft_is_cookable(m_subname);
}

InventoryItem *CraftItem::createCookResult()
{
	return item_craft_create_cook_result(m_subname);
}

bool CraftItem::use(ServerEnvironment *env, Player *player)
{
	if(item_craft_is_eatable(m_subname))
	{
		s16 hp_change = item_craft_eat_hp_change(m_subname);
		if(player->hp + hp_change > 20)
			player->hp = 20;
		else
			player->hp += hp_change;
		return true;
	}
	return false;
}

/*
	MapBlockObjectItem DEPRECATED
	TODO: Remove
*/
#ifndef SERVER
video::ITexture * MapBlockObjectItem::getImage()
{
	if(m_inventorystring.substr(0,3) == "Rat")
		return g_texturesource->getTextureRaw("rat.png");
	
	if(m_inventorystring.substr(0,4) == "Sign")
		return g_texturesource->getTextureRaw("sign.png");

	return NULL;
}
#endif
std::string MapBlockObjectItem::getText()
{
	if(m_inventorystring.substr(0,3) == "Rat")
		return "";
	
	if(m_inventorystring.substr(0,4) == "Sign")
		return "";

	return "obj";
}

MapBlockObject * MapBlockObjectItem::createObject
		(v3f pos, f32 player_yaw, f32 player_pitch)
{
	std::istringstream is(m_inventorystring);
	std::string name;
	std::getline(is, name, ' ');
	
	if(name == "None")
	{
		return NULL;
	}
	else if(name == "Sign")
	{
		std::string text;
		std::getline(is, text, '|');
		SignObject *obj = new SignObject(NULL, -1, pos);
		obj->setText(text);
		obj->setYaw(-player_yaw);
		return obj;
	}
	else if(name == "Rat")
	{
		RatObject *obj = new RatObject(NULL, -1, pos);
		return obj;
	}
	else if(name == "ItemObj")
	{
		/*
			Now we are an inventory item containing the serialization
			string of an object that contains the serialization
			string of an inventory item. Fuck this.
		*/
		//assert(0);
		dstream<<__FUNCTION_NAME<<": WARNING: Ignoring ItemObj "
				<<"because an item-object should never be inside "
				<<"an object-item."<<std::endl;
		return NULL;
	}
	else
	{
		return NULL;
	}
}

/*
	Inventory
*/

InventoryList::InventoryList(std::string name, u32 size)
{
	m_name = name;
	m_size = size;
	clearItems();
	//m_dirty = false;
}

InventoryList::~InventoryList()
{
	for(u32 i=0; i<m_items.size(); i++)
	{
		if(m_items[i])
			delete m_items[i];
	}
}

void InventoryList::clearItems()
{
	for(u32 i=0; i<m_items.size(); i++)
	{
		if(m_items[i])
			delete m_items[i];
	}

	m_items.clear();

	for(u32 i=0; i<m_size; i++)
	{
		m_items.push_back(NULL);
	}

	//setDirty(true);
}

void InventoryList::serialize(std::ostream &os)
{
	//os.imbue(std::locale("C"));
	
	for(u32 i=0; i<m_items.size(); i++)
	{
		InventoryItem *item = m_items[i];
		if(item != NULL)
		{
			os<<"Item ";
			item->serialize(os);
		}
		else
		{
			os<<"Empty";
		}
		os<<"\n";
	}

	os<<"EndInventoryList\n";
}

void InventoryList::deSerialize(std::istream &is)
{
	//is.imbue(std::locale("C"));

	clearItems();
	u32 item_i = 0;

	for(;;)
	{
		std::string line;
		std::getline(is, line, '\n');

		std::istringstream iss(line);
		//iss.imbue(std::locale("C"));

		std::string name;
		std::getline(iss, name, ' ');

		if(name == "EndInventoryList")
		{
			break;
		}
		// This is a temporary backwards compatibility fix
		else if(name == "end")
		{
			break;
		}
		else if(name == "Item")
		{
			if(item_i > getSize() - 1)
				throw SerializationError("too many items");
			InventoryItem *item = InventoryItem::deSerialize(iss);
			m_items[item_i++] = item;
		}
		else if(name == "Empty")
		{
			if(item_i > getSize() - 1)
				throw SerializationError("too many items");
			m_items[item_i++] = NULL;
		}
		else
		{
			throw SerializationError("Unknown inventory identifier");
		}
	}
}

InventoryList::InventoryList(const InventoryList &other)
{
	/*
		Do this so that the items get cloned. Otherwise the pointers
		in the array will just get copied.
	*/
	*this = other;
}

InventoryList & InventoryList::operator = (const InventoryList &other)
{
	m_name = other.m_name;
	m_size = other.m_size;
	clearItems();
	for(u32 i=0; i<other.m_items.size(); i++)
	{
		InventoryItem *item = other.m_items[i];
		if(item != NULL)
		{
			m_items[i] = item->clone();
		}
	}
	//setDirty(true);

	return *this;
}

std::string InventoryList::getName()
{
	return m_name;
}

u32 InventoryList::getSize()
{
	return m_items.size();
}

u32 InventoryList::getUsedSlots()
{
	u32 num = 0;
	for(u32 i=0; i<m_items.size(); i++)
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