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path: root/builtin/item_entity.lua
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-- Minetest: builtin/item_entity.lua

function minetest.spawn_item(pos, item)
	-- Take item in any format
	local stack = ItemStack(item)
	local obj = minetest.env:add_entity(pos, "__builtin:item")
	obj:get_luaentity():set_item(stack:to_string())
	return obj
end

minetest.register_entity("__builtin:item", {
	initial_properties = {
		hp_max = 1,
		physical = true,
		collisionbox = {-0.17,-0.17,-0.17, 0.17,0.17,0.17},
		visual = "sprite",
		visual_size = {x=0.5, y=0.5},
		textures = {""},
		spritediv = {x=1, y=1},
		initial_sprite_basepos = {x=0, y=0},
		is_visible = false,
	},
	
	itemstring = '',
	physical_state = true,

	set_item = function(self, itemstring)
		self.itemstring = itemstring
		local stack = ItemStack(itemstring)
		local itemtable = stack:to_table()
		local itemname = nil
		if itemtable then
			itemname = stack:to_table().name
		end
		local item_texture = nil
		local item_type = ""
		if minetest.registered_items[itemname] then
			item_texture = minetest.registered_items[itemname].inventory_image
			item_type = minetest.registered_items[itemname].type
		end
		prop = {
			is_visible = true,
			visual = "sprite",
			textures = {"unknown_item.png"}
		}
		if item_texture and item_texture ~= "" then
			prop.visual = "sprite"
			prop.textures = {item_texture}
			prop.visual_size = {x=0.50, y=0.50}
		else
			prop.visual = "wielditem"
			prop.textures = {itemname}
			prop.visual_size = {x=0.20, y=0.20}
			prop.automatic_rotate = math.pi * 0.25
		end
		self.object:set_properties(prop)
	end,

	get_staticdata = function(self)
		--return self.itemstring
		return minetest.serialize({
			itemstring = self.itemstring,
			always_collect = self.always_collect,
		})
	end,

	on_activate = function(self, staticdata)
		if string.sub(staticdata, 1, string.len("return")) == "return" then
			local data = minetest.deserialize(staticdata)
			if data and type(data) == "table" then
				self.itemstring = data.itemstring
				self.always_collect = data.always_collect
			end
		else
			self.itemstring = staticdata
		end
		self.object:set_armor_groups({immortal=1})
		self.object:setvelocity({x=0, y=2, z=0})
		self.object:setacceleration({x=0, y=-10, z=0})
		self:set_item(self.itemstring)
	end,

	on_step = function(self, dtime)
		local p = self.object:getpos()
		p.y = p.y - 0.3
		local nn = minetest.env:get_node(p).name
		-- If node is not registered or node is walkably solid and resting on nodebox
		local v = self.object:getvelocity()
		if not minetest.registered_nodes[nn] or minetest.registered_nodes[nn].walkable and v.y == 0 then
			if self.physical_state then
				self.object:setvelocity({x=0,y=0,z=0})
				self.object:setacceleration({x=0, y=0, z=0})
				self.physical_state = false
				self.object:set_properties({
					physical = false
				})
			end
		else
			if not self.physical_state then
				self.object:setvelocity({x=0,y=0,z=0})
				self.object:setacceleration({x=0, y=-10, z=0})
				self.physical_state = true
				self.object:set_properties({
					physical = true
				})
			end
		end
	end,

	on_punch = function(self, hitter)
		if self.itemstring ~= '' then
			hitter:get_inventory():add_item("main", self.itemstring)
		end
		self.object:remove()
	end,
})

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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.
*/

#include "filesys.h"
#include "util/string.h"
#include <iostream>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fstream>
#include "log.h"
#include "config.h"
#include "porting.h"

namespace fs
{

#ifdef _WIN32 // WINDOWS

#define _WIN32_WINNT 0x0501
#include <windows.h>
#include <shlwapi.h>

std::vector<DirListNode> GetDirListing(const std::string &pathstring)
{
	std::vector<DirListNode> listing;

	WIN32_FIND_DATA FindFileData;
	HANDLE hFind = INVALID_HANDLE_VALUE;
	DWORD dwError;

	std::string dirSpec = pathstring + "\\*";

	// Find the first file in the directory.
	hFind = FindFirstFile(dirSpec.c_str(), &FindFileData);

	if (hFind == INVALID_HANDLE_VALUE) {
		dwError = GetLastError();
		if (dwError != ERROR_FILE_NOT_FOUND && dwError != ERROR_PATH_NOT_FOUND) {
			errorstream << "GetDirListing: FindFirstFile error."
					<< " Error is " << dwError << std::endl;
		}
	} else {
		// NOTE:
		// Be very sure to not include '..' in the results, it will
		// result in an epic failure when deleting stuff.

		DirListNode node;
		node.name = FindFileData.cFileName;
		node.dir = FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
		if (node.name != "." && node.name != "..")
			listing.push_back(node);

		// List all the other files in the directory.
		while (FindNextFile(hFind, &FindFileData) != 0) {
			DirListNode node;
			node.name = FindFileData.cFileName;
			node.dir = FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
			if(node.name != "." && node.name != "..")
				listing.push_back(node);
		}

		dwError = GetLastError();
		FindClose(hFind);
		if (dwError != ERROR_NO_MORE_FILES) {
			errorstream << "GetDirListing: FindNextFile error."
					<< " Error is " << dwError << std::endl;
			listing.clear();
			return listing;
 		}
	}
	return listing;
}

bool CreateDir(const std::string &path)
{
	bool r = CreateDirectory(path.c_str(), NULL);
	if(r == true)
		return true;
	if(GetLastError() == ERROR_ALREADY_EXISTS)
		return true;
	return false;
}

bool PathExists(const std::string &path)
{
	return (GetFileAttributes(path.c_str()) != INVALID_FILE_ATTRIBUTES);
}

bool IsPathAbsolute(const std::string &path)
{
	return !PathIsRelative(path.c_str());
}

bool IsDir(const std::string &path)
{
	DWORD attr = GetFileAttributes(path.c_str());
	return (attr != INVALID_FILE_ATTRIBUTES &&
			(attr & FILE_ATTRIBUTE_DIRECTORY));
}

bool IsDirDelimiter(char c)
{
	return c == '/' || c == '\\';
}

bool RecursiveDelete(const std::string &path)
{
	infostream<<"Recursively deleting \""<<path<<"\""<<std::endl;

	DWORD attr = GetFileAttributes(path.c_str());
	bool is_directory = (attr != INVALID_FILE_ATTRIBUTES &&
			(attr & FILE_ATTRIBUTE_DIRECTORY));
	if(!is_directory)
	{
		infostream<<"RecursiveDelete: Deleting file "<<path<<std::endl;
		//bool did = DeleteFile(path.c_str());
		bool did = true;
		if(!did){
			errorstream<<"RecursiveDelete: Failed to delete file "
					<<path<<std::endl;
			return false;
		}
	}
	else
	{
		infostream<<"RecursiveDelete: Deleting content of directory "
				<<path<<std::endl;
		std::vector<DirListNode> content = GetDirListing(path);
		for(size_t i=0; i<content.size(); i++){
			const DirListNode &n = content[i];
			std::string fullpath = path + DIR_DELIM + n.name;
			bool did = RecursiveDelete(fullpath);
			if(!did){
				errorstream<<"RecursiveDelete: Failed to recurse to "
						<<fullpath<<std::endl;
				return false;
			}
		}
		infostream<<"RecursiveDelete: Deleting directory "<<path<<std::endl;
		//bool did = RemoveDirectory(path.c_str();
		bool did = true;
		if(!did){
			errorstream<<"Failed to recursively delete directory "