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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.
*/

#ifndef BAN_HEADER
#define BAN_HEADER

#include "util/string.h"
#include "threading/thread.h"
#include "threading/mutex.h"
#include "exceptions.h"
#include <map>
#include <string>

class BanManager
{
public:
	BanManager(const std::string &bannfilepath);
	~BanManager();
	void load();
	void save();
	bool isIpBanned(const std::string &ip);
	// Supplying ip_or_name = "" lists all bans.
	std::string getBanDescription(const std::string &ip_or_name);
	std::string getBanName(const std::string &ip);
	void add(const std::string &ip, const std::string &name);
	void remove(const std::string &ip_or_name);
	bool isModified();

private:
	Mutex m_mutex;
	std::string m_banfilepath;
	StringMap m_ips;
	bool m_modified;
};

#endif
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/*
Minetest
Copyright (C) 2010-2015 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
Copyright (C) 2010-2015 paramat, Matt Gregory

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 "mapgen.h"
#include "voxel.h"
#include "noise.h"
#include "mapblock.h"
#include "mapnode.h"
#include "map.h"
#include "content_sao.h"
#include "nodedef.h"
#include "voxelalgorithms.h"
//#include "profiler.h" // For TimeTaker
#include "settings.h" // For g_settings
#include "emerge.h"
#include "dungeongen.h"
#include "cavegen.h"
#include "treegen.h"
#include "mg_biome.h"
#include "mg_ore.h"
#include "mg_decoration.h"
#include "mapgen_v7.h"


FlagDesc flagdesc_mapgen_v7[] = {
	{"mountains",    MGV7_MOUNTAINS},
	{"ridges",       MGV7_RIDGES},
	{"floatlands",   MGV7_FLOATLANDS},
	{NULL,           0}
};


///////////////////////////////////////////////////////////////////////////////


MapgenV7::MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge)
	: MapgenBasic(mapgenid, params, emerge)
{
	this->spflags             = params->spflags;
	this->cave_width          = params->cave_width;
	this->float_mount_density = params->float_mount_density;
	this->float_mount_height  = params->float_mount_height;
	this->floatland_level     = params->floatland_level;
	this->shadow_limit        = params->shadow_limit;

	//// Terrain noise
	noise_terrain_base      = new Noise(&params->np_terrain_base,      seed, csize.X, csize.Z);
	noise_terrain_alt       = new Noise(&params->np_terrain_alt,       seed, csize.X, csize.Z);
	noise_terrain_persist   = new Noise(&params->np_terrain_persist,   seed, csize.X, csize.Z);
	noise_height_select     = new Noise(&params->np_height_select,     seed, csize.X, csize.Z);
	noise_filler_depth      = new Noise(&params->np_filler_depth,      seed, csize.X, csize.Z);
	noise_mount_height      = new Noise(&params->np_mount_height,      seed, csize.X, csize.Z);
	noise_ridge_uwater      = new Noise(&params->np_ridge_uwater,      seed, csize.X, csize.Z);
	noise_floatland_base    = new Noise(&params->np_floatland_base,    seed, csize.X, csize.Z);
	noise_float_base_height = new Noise(&params->np_float_base_height, seed, csize.X, csize.Z);

	//// 3d terrain noise
	// 1-up 1-down overgeneration
	noise_mountain = new Noise(&params->np_mountain, seed, csize.X, csize.Y + 2, csize.Z);
	noise_ridge    = new Noise(&params->np_ridge,    seed, csize.X, csize.Y + 2, csize.Z);

	MapgenBasic::np_cave1 = params->np_cave1;
	MapgenBasic::np_cave2 = params->np_cave2;
}


MapgenV7::~MapgenV7()
{
	delete noise_terrain_base;
	delete noise_terrain_persist;
	delete noise_height_select;
	delete noise_terrain_alt;
	delete noise_filler_depth;
	delete noise_mount_height;
	delete noise_ridge_uwater;
	delete noise_floatland_base;
	delete noise_float_base_height;
	delete noise_mountain;
	delete noise_ridge;
}


MapgenV7Params::MapgenV7Params()
{
	spflags             = MGV7_MOUNTAINS | MGV7_RIDGES;
	cave_width          = 0.09;
	float_mount_density = 0.6;
	float_mount_height  = 128.0;
	floatland_level     = 1280;
	shadow_limit        = 1024;

	np_terrain_base      = NoiseParams(4,    70,   v3f(600,  600,  600),  82341, 5, 0.6,  2.0);
	np_terrain_alt       = NoiseParams(4,    25,   v3f(600,  600,  600),  5934,  5, 0.6,  2.0);
	np_terrain_persist   = NoiseParams(0.6,  0.1,  v3f(2000, 2000, 2000), 539,   3, 0.6,  2.0);
	np_height_select     = NoiseParams(-8,   16,   v3f(500,  500,  500),  4213,  6, 0.7,  2.0);
	np_filler_depth      = NoiseParams(0,    1.2,  v3f(150,  150,  150),  261,   3, 0.7,  2.0);
	np_mount_height      = NoiseParams(256,  112,  v3f(1000, 1000, 1000), 72449, 3, 0.6,  2.0);
	np_ridge_uwater      = NoiseParams(0,    1,    v3f(1000, 1000, 1000), 85039, 5, 0.6,  2.0);
	np_floatland_base    = NoiseParams(-0.6, 1.5,  v3f(600,  600,  600),  114,   5, 0.6,  2.0);
	np_float_base_height = NoiseParams(48,   24,   v3f(300,  300,  300),  907,   4, 0.7,  2.0);
	np_mountain          = NoiseParams(-0.6, 1,    v3f(250,  350,  250),  5333,  5, 0.63, 2.0);
	np_ridge             = NoiseParams(0,    1,    v3f(100,  100,  100),  6467,  4, 0.75, 2.0);
	np_cave1             = NoiseParams(0,    12,   v3f(61,   61,   61),   52534, 3, 0.5,  2.0);
	np_cave2             = NoiseParams(0,    12,   v3f(67,   67,   67),   10325, 3, 0.5,  2.0);
}


void MapgenV7Params::readParams(const Settings *settings)
{
	settings->getFlagStrNoEx("mgv7_spflags",           spflags, flagdesc_mapgen_v7);
	settings->getFloatNoEx("mgv7_cave_width",          cave_width);
	settings->getFloatNoEx("mgv7_float_mount_density", float_mount_density);
	settings->getFloatNoEx("mgv7_float_mount_height",  float_mount_height);
	settings->getS16NoEx("mgv7_floatland_level",       floatland_level);
	settings->getS16NoEx("mgv7_shadow_limit",          shadow_limit);

	settings->getNoiseParams("mgv7_np_terrain_base",      np_terrain_base);
	settings->getNoiseParams("mgv7_np_terrain_alt",       np_terrain_alt);
	settings->getNoiseParams("mgv7_np_terrain_persist",   np_terrain_persist);
	settings->getNoiseParams("mgv7_np_height_select",     np_height_select);
	settings->getNoiseParams("mgv7_np_filler_depth",      np_filler_depth);
	settings->getNoiseParams("mgv7_np_mount_height",      np_mount_height);
	settings->getNoiseParams("mgv7_np_ridge_uwater",      np_ridge_uwater);
	settings->getNoiseParams("mgv7_np_floatland_base",    np_floatland_base);
	settings->getNoiseParams("mgv7_np_float_base_height", np_float_base_height);
	settings->getNoiseParams("mgv7_np_mountain",          np_mountain);
	settings->getNoiseParams("mgv7_np_ridge",             np_ridge);
	settings->getNoiseParams("mgv7_np_cave1",             np_cave1);
	settings->getNoiseParams("mgv7_np_cave2",             np_cave2);
}


void MapgenV7Params::writeParams(Settings *settings) const
{
	settings->setFlagStr("mgv7_spflags",           spflags, flagdesc_mapgen_v7, U32_MAX);
	settings->setFloat("mgv7_cave_width",          cave_width);
	settings->setFloat("mgv7_float_mount_density", float_mount_density);
	settings->setFloat("mgv7_float_mount_height",  float_mount_height);
	settings->setS16("mgv7_floatland_level",       floatland_level);
	settings->setS16("mgv7_shadow_limit",          shadow_limit);

	settings->setNoiseParams("mgv7_np_terrain_base",      np_terrain_base);
	settings->setNoiseParams("mgv7_np_terrain_alt",       np_terrain_alt);
	settings->setNoiseParams("mgv7_np_terrain_persist",   np_terrain_persist);
	settings->setNoiseParams("mgv7_np_height_select",     np_height_select);
	settings->setNoiseParams("mgv7_np_filler_depth",      np_filler_depth);
	settings->setNoiseParams("mgv7_np_mount_height",      np_mount_height);
	settings->setNoiseParams("mgv7_np_ridge_uwater",      np_ridge_uwater);
	settings->setNoiseParams("mgv7_np_floatland_base",    np_floatland_base);
	settings->setNoiseParams("mgv7_np_float_base_height", np_float_base_height);
	settings->setNoiseParams("mgv7_np_mountain",          np_mountain);
	settings->setNoiseParams("mgv7_np_ridge",             np_ridge);
	settings->setNoiseParams("mgv7_np_cave1",             np_cave1);
	settings->setNoiseParams("mgv7_np_cave2",             np_cave2);
}


///////////////////////////////////////////////////////////////////////////////


int MapgenV7::getSpawnLevelAtPoint(v2s16 p)
{
	// Base terrain calculation
	s16 y = baseTerrainLevelAtPoint(p.X, p.Y);

	// If enabled, check if inside a river
	if (spflags & MGV7_RIDGES) {
		float width = 0.2;
		float uwatern = NoisePerlin2D(&noise_ridge_uwater->np, p.X, p.Y, seed) * 2;
		if (fabs(uwatern) <= width)
			return MAX_MAP_GENERATION_LIMIT;  // Unsuitable spawn point
	}

	// If mountains are disabled, terrain level is base terrain level
	// Avoids spawn on non-existant mountain terrain
	if (!(spflags & MGV7_MOUNTAINS)) {
		if (y <= water_level || y > water_level + 16)
			return MAX_MAP_GENERATION_LIMIT;  // Unsuitable spawn point
		else
			return y;
	}

	// Mountain terrain calculation
	int iters = 128;
	while (iters--) {
		if (!getMountainTerrainAtPoint(p.X, y + 1, p.Y)) {  // If air above
			if (y <= water_level || y > water_level + 16)
				return MAX_MAP_GENERATION_LIMIT;  // Unsuitable spawn point
			else
				return y;
		}
		y++;
	}

	// Unsuitable spawn point, no mountain surface found
	return MAX_MAP_GENERATION_LIMIT;
}


void MapgenV7::makeChunk(BlockMakeData *data)
{
	// Pre-conditions
	assert(data->vmanip);
	assert(data->nodedef);
	assert(data->blockpos_requested.X >= data->blockpos_min.X &&
		data->blockpos_requested.Y >= data->blockpos_min.Y &&
		data->blockpos_requested.Z >= data->blockpos_min.Z);
	assert(data->blockpos_requested.X <= data->blockpos_max.X &&
		data->blockpos_requested.Y <= data->blockpos_max.Y &&
		data->blockpos_requested.Z <= data->blockpos_max.Z);

	this->generating = true;
	this->vm   = data->vmanip;
	this->ndef = data->nodedef;
	//TimeTaker t("makeChunk");

	v3s16 blockpos_min = data->blockpos_min;
	v3s16 blockpos_max = data->blockpos_max;
	node_min = blockpos_min * MAP_BLOCKSIZE;
	node_max = (blockpos_max + v3s16(1, 1, 1)) * MAP_BLOCKSIZE - v3s16(1, 1, 1);