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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 "lua_api/l_noise.h"
#include "lua_api/l_internal.h"
#include "common/c_converter.h"
#include "common/c_content.h"
#include "log.h"
#include "porting.h"
#include "util/numeric.h"

///////////////////////////////////////
/*
  LuaPerlinNoise
*/

LuaPerlinNoise::LuaPerlinNoise(NoiseParams *params) :
	np(*params)
{
}


LuaPerlinNoise::~LuaPerlinNoise()
{
}


int LuaPerlinNoise::l_get2d(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	LuaPerlinNoise *o = checkobject(L, 1);
	v2f p = check_v2f(L, 2);
	lua_Number val = NoisePerlin2D(&o->np, p.X, p.Y, 0);
	lua_pushnumber(L, val);
	return 1;
}


int LuaPerlinNoise::l_get3d(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	LuaPerlinNoise *o = checkobject(L, 1);
	v3f p = check_v3f(L, 2);
	lua_Number val = NoisePerlin3D(&o->np, p.X, p.Y, p.Z, 0);
	lua_pushnumber(L, val);
	return 1;
}


int LuaPerlinNoise::create_object(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	NoiseParams params;

	if (lua_istable(L, 1)) {
		read_noiseparams(L, 1, &params);
	} else {
		params.seed    = luaL_checkint(L, 1);
		params.octaves = luaL_checkint(L, 2);
		params.persist = luaL_checknumber(L, 3);
		params.spread  = v3f(1, 1, 1) * luaL_checknumber(L, 4);
	}

	LuaPerlinNoise *o = new LuaPerlinNoise(&params);