advtrains_train_industrial/textures/advtrains_wagon_wood_inv.png

/*
Minetest
Copyright (C) 2014-2018 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
Copyright (C) 2015-2018 paramat

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 "mg_decoration.h"
#include "mg_schematic.h"
#include "mapgen.h"
#include "noise.h"
#include "map.h"
#include "log.h"
#include "util/numeric.h"
#include <algorithm>
#include <vector>


FlagDesc flagdesc_deco[] = {
	{"place_center_x",  DECO_PLACE_CENTER_X},
	{"place_center_y",  DECO_PLACE_CENTER_Y},
	{"place_center_z",  DECO_PLACE_CENTER_Z},
	{"force_placement", DECO_FORCE_PLACEMENT},
	{"liquid_surface",  DECO_LIQUID_SURFACE},
	{"all_floors",      DECO_ALL_FLOORS},
	{"all_ceilings",    DECO_ALL_CEILINGS},
	{NULL,              0}
};


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


DecorationManager::DecorationManager(IGameDef *gamedef) :
	ObjDefManager(gamedef, OBJDEF_DECORATION)
{
}


size_t DecorationManager::placeAllDecos(Mapgen *mg, u32 blockseed,
	v3s16 nmin, v3s16 nmax)
{
	size_t nplaced = 0;

	for (size_t i = 0; i != m_objects.size(); i++) {
		Decoration *deco = (Decoration *)m_objects[i];
		if (!deco)
			continue;

		nplaced += deco->placeDeco(mg, blockseed, nmin, nmax);
		blockseed++;
	}

	return nplaced;
}

DecorationManager *DecorationManager::clone() const
{
	auto mgr = new DecorationManager();
	ObjDefManager::cloneTo(mgr);
	return mgr;
}


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


void Decoration::resolveNodeNames()
{
	getIdsFromNrBacklog(&c_place_on);
	getIdsFromNrBacklog(&c_spawnby);
}


bool Decoration::canPlaceDecoration(MMVManip *vm, v3s16 p)
{
	// Check if the decoration can be placed on this node
	u32 vi = vm->m_area.index(p);
	if (!CONTAINS(c_place_on, vm->m_data[vi].getContent()))
		return false;

	// Don't continue if there are no spawnby constraints
	if (nspawnby == -1)
		return true;

	int nneighs = 0;
	static const v3s16 dirs[16] = {
		v3s16( 0, 0,  1),
		v3s16( 0, 0, -1),
		v3s16( 1, 0,  0),
		v3s16(-1, 0,  0),
		v3s16( 1, 0,  1),
		v3s16(-1, 0,  1),
		v3s16(-1, 0, -1),
		v3s16( 1, 0, -1),

		v3s16( 0, 1,  1),
		v3s16( 0, 1, -1),
		v3s16( 1, 1,  0),
		v3s16(-1, 1,  0),
		v3s16( 1, 1,  1),
		v3s16(-1, 1,  1),
		v3s16(-1, 1, -1),
		v3s16( 1, 1, -1)
	};

	// Check these 16 neighbouring nodes for enough spawnby nodes
	for (size_t i = 0; i != ARRLEN(dirs); i++) {
		u32 index = vm->m_area.index(p + dirs[i]);
		if (!vm->m_area.contains(index))
			continue;

		if (CONTAINS(c_spawnby, vm->m_data[index].getContent()))
			nneighs++;
	}

	if (nneighs < nspawnby)
		return false;

	return true;
}


size_t Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
{
	PcgRandom ps(blockseed + 53);
	int carea_size = nmax.X - nmin.X + 1;

	// Divide area into parts
	// If chunksize is changed it may no longer be divisable by sidelen
	if (carea_size % sidelen)
		sidelen = carea_size;

	s16 divlen = carea_size / sidelen;
	int area = sidelen * sidelen;

	for (s16 z0 = 0; z0 < divlen; z0++)
ofs	hex dump	ascii
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0040	00 0b 13 01 00 9a 9c 18 00 00 00 07 74 49 4d 45 07 e0 0b 06 10 20 36 ce 33 cd a4 00 00 00 19 74	............tIME......6.3......t
0060	45 58 74 43 6f 6d 6d 65 6e 74 00 43 72 65 61 74 65 64 20 77 69 74 68 20 47 49 4d 50 57 81 0e 17	EXtComment.Created.with.GIMPW...
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00e0	f9 97 08 ba e3 02 05 82 01 97 2c 5f 00 1a f0 04 37 e0 b4 e0 33 20 5c 41 6e 6d eb 45 51 60 66 a8	..........,_....7...3.\Anm.EQ`f.
0100	2a 66 c6 79 18 24 3d f0 04 72 ef 3a 4f 3d 55 65 9e 67 9a 71 94 77 82 34 64 66 b8 3f 17 4d 20 d3	*f.y.$=..r.:O=Ue.g.q.w.4df.?.M..
0120	eb bb bb fb 87 27 d5 03 7a 95 3d 1a 39 46 c3 dd 00 00 00 00 49 45 4e 44 ae 42 60 82	.....'..z.=.9F......IEND.B`.