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	Commit message (Collapse)	Author	Age
*	Revert part of eb49009d023e6e3b5d59a97b8fb5fed5eee83296 (#5230)	Auke Kok	2017-02-16
| | | | | | | | | | | | | | | |	This reverts the removal of Droid Sans as fallback font. The license for this font used to be GPL2. I've updated the font files to Liberation 2.00, which are SIL, and do not require us to ship source code. I've attempted to fix all the attribution and license strings, and used the strings as provided by redhat for attribution to make sure they're correct. Last, I've removed a bunch of executable bits on files that do not need them. Fixes #5231
*	Compress textures and fonts	Maksim Gamarnik	2015-10-15
| | | | |	Used PNGOUT, OptiPNG and DeflOpt. Removes ~350 KB without any loss in quality.
*	Implement proper font handling	sapier	2014-11-30

generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 01:54:15 +0000

/*
Minetest
Copyright (C) 2010-2014 kwolekr, Ryan Kwolek <kwolekr@minetest.net>

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"

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},
	{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;
}


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


Decoration::Decoration()
{
	mapseed    = 0;
	fill_ratio = 0;
	sidelen    = 1;
	flags      = 0;
}


Decoration::~Decoration()
{
}


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++)
	for (s16 x0 = 0; x0 < divlen; x0++) {
		v2s16 p2d_center( // Center position of part of division
			nmin.X + sidelen / 2 + sidelen * x0,
			nmin.Z + sidelen / 2 + sidelen * z0
		);
		v2s16 p2d_min( // Minimum edge of part of division
			nmin.X + sidelen * x0,
			nmin.Z + sidelen * z0
		);
		v2s16 p2d_max( // Maximum edge of part of division
			nmin.X + sidelen + sidelen * x0 - 1,
			nmin.Z + sidelen + sidelen * z0 - 1
		);

		// Amount of decorations
		float nval = (flags & DECO_USE_NOISE) ?
			NoisePerlin2D(&np, p2d_center.X, p2d_center.Y, mapseed) :
			fill_ratio;
		u32 deco_count = 0;
		float deco_count_f = (float)area * nval;
		if (deco_count_f >= 1.f) {
			deco_count = deco_count_f;
		} else if (deco_count_f > 0.f) {
			// For low density decorations calculate a chance for 1 decoration
			if (ps.range(1000) <= deco_count_f * 1000.f)
				deco_count = 1;
		}

		for (u32 i = 0; i < deco_count; i++) {
			s16 x = ps.range(p2d_min.X, p2d_max.X);
			s16 z = ps.range(p2d_min.Y, p2d_max.Y);

			int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);

			s16 y = -MAX_MAP_GENERATION_LIMIT;
			if (flags & DECO_LIQUID_SURFACE)
				y = mg->findLiquidSurface(v2s16(x, z), nmin.Y, nmax.Y);
			else if (mg->heightmap)
				y = mg->heightmap[mapindex];
			else
				y = mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);

			if (y < nmin.Y || y > nmax.Y ||
				y < y_min  || y > y_max)
				continue;

			if (y + getHeight() > mg->vm->m_area.MaxEdge.Y) {
				continue;
#if 0
				printf("Decoration at (%d %d %d) cut off\n", x, y, z);
				//add to queue
				MutexAutoLock cutofflock(cutoff_mutex);
				cutoffs.push_back(CutoffData(x, y, z, height));
#endif
			}

			if (mg->biomemap) {
				UNORDERED_SET<u8>::iterator iter;

				if (!biomes.empty()) {
					iter = biomes.find(mg->biomemap[mapindex]);
					if (iter == biomes.end())
						continue;
				}
			}

			v3s16 pos(x, y, z);
			if (generate(mg->vm, &ps, pos))
				mg->gennotify.addEvent(GENNOTIFY_DECORATION, pos, index);
		}
	}

	return 0;
}


#if 0
void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
{
	PcgRandom pr(blockseed + 53);
	std::vector<CutoffData> handled_cutoffs;

	// Copy over the cutoffs we're interested in so we don't needlessly hold a lock
	{
		MutexAutoLock cutofflock(cutoff_mutex);
		for (std::list<CutoffData>::iterator i = cutoffs.begin();
			i != cutoffs.end(); ++i) {
			CutoffData cutoff = *i;
			v3s16 p    = cutoff.p;
			s16 height = cutoff.height;
			if (p.X < nmin.X || p.X > nmax.X ||
				p.Z < nmin.Z || p.Z > nmax.Z)
				continue;
			if (p.Y + height < nmin.Y || p.Y > nmax.Y)
				continue;

			handled_cutoffs.push_back(cutoff);
		}
	}

	// Generate the cutoffs
	for (size_t i = 0; i != handled_cutoffs.size(); i++) {
		v3s16 p    = handled_cutoffs[i].p;
		s16 height = handled_cutoffs[i].height;

		if (p.Y + height > nmax.Y) {
			//printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
			cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
		}

		generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
	}

	// Remove cutoffs that were handled from the cutoff list
	{
		MutexAutoLock cutofflock(cutoff_mutex);
		for (std::list<CutoffData>::iterator i = cutoffs.begin();
			i != cutoffs.end(); ++i) {

			for (size_t j = 0; j != handled_cutoffs.size(); j++) {
				CutoffData coff = *i;
				if (coff.p == handled_cutoffs[j].p)
					i = cutoffs.erase(i);
			}
		}
	}
}
#endif


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


void DecoSimple::resolveNodeNames()
{
	Decoration::resolveNodeNames();
	getIdsFromNrBacklog(&c_decos);
}


size_t DecoSimple::generate(MMVManip *vm, PcgRandom *pr, v3s16 p)
{
	// Don't bother if there aren't any decorations to place
	if (c_decos.size() == 0)
		return 0;

	if (!canPlaceDecoration(vm, p))
		return 0;

	content_t c_place = c_decos[pr->range(0, c_decos.size() - 1)];

	s16 height = (deco_height_max > 0) ?
		pr->range(deco_height, deco_height_max) : deco_height;

	bool force_placement = (flags & DECO_FORCE_PLACEMENT);

	v3s16 em = vm->m_area.getExtent();
	u32 vi = vm->m_area.index(p);
	for (int i = 0; i < height; i++) {
		vm->m_area.add_y(em, vi, 1);

		content_t c = vm->m_data[vi].getContent();
		if (c != CONTENT_AIR && c != CONTENT_IGNORE &&
				!force_placement)
			break;

		vm->m_data[vi] = MapNode(c_place, 0, deco_param2);
	}

	return 1;
}


int DecoSimple::getHeight()
{
	return (deco_height_max > 0) ? deco_height_max : deco_height;
}


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


DecoSchematic::DecoSchematic()
{
	schematic = NULL;
}


size_t DecoSchematic::generate(MMVManip *vm, PcgRandom *pr, v3s16 p)
{
	// Schematic could have been unloaded but not the decoration
	// In this case generate() does nothing (but doesn't *fail*)
	if (schematic == NULL)
		return 0;

	if (!canPlaceDecoration(vm, p))
		return 0;

	if (flags & DECO_PLACE_CENTER_X)
		p.X -= (schematic->size.X - 1) / 2;
	if (flags & DECO_PLACE_CENTER_Y)
		p.Y -= (schematic->size.Y - 1) / 2;
	if (flags & DECO_PLACE_CENTER_Z)
		p.Z -= (schematic->size.Z - 1) / 2;

	Rotation rot = (rotation == ROTATE_RAND) ?
		(Rotation)pr->range(ROTATE_0, ROTATE_270) : rotation;

	bool force_placement = (flags & DECO_FORCE_PLACEMENT);

	schematic->blitToVManip(vm, p, rot, force_placement);

	return 1;
}


int DecoSchematic::getHeight()
{
	// Account for a schematic being sunk into the ground by flag.
	// When placed normally account for how a schematic is placed
	// sunk 1 node into the ground.
	return (flags & DECO_PLACE_CENTER_Y) ?
		(schematic->size.Y - 1) / 2 : schematic->size.Y - 1;
}