Fix vector.from_string returning a table without vector metatable - minetest.git

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author	Desour <vorunbekannt75@web.de>	2022-01-02 17:16:16 +0100
committer	ShadowNinja <ShadowNinja@users.noreply.github.com>	2022-01-02 22:15:41 -0500
commit	196562870552b156265feb83043da2bc21bd6246 (patch)
tree	19b0820ed7d10a92271f071466b9a88da0a36379 /builtin/game/init.lua
parent	84fdd369d45314a5b7946ff66fe5fce85c1abc1f (diff)
download	minetest-196562870552b156265feb83043da2bc21bd6246.tar.gz minetest-196562870552b156265feb83043da2bc21bd6246.tar.bz2 minetest-196562870552b156265feb83043da2bc21bd6246.zip

Fix vector.from_string returning a table without vector metatable

Diffstat (limited to 'builtin/game/init.lua')

0 files changed, 0 insertions, 0 deletions

/* Minetest-c55 Copyright (C) 2010 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 General Public License as published by the Free Software Foundation; either version 2 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 General Public License for more details. You should have received a copy of the GNU 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. */ /* (c) 2010 Perttu Ahola <celeron55@gmail.com> */ #ifndef HEIGHTMAP_HEADER #define HEIGHTMAP_HEADER #include <iostream> #include <time.h> #include <sstream> #include "debug.h" #include "common_irrlicht.h" #include "exceptions.h" #include "utility.h" #include "serialization.h" #define GROUNDHEIGHT_NOTFOUND_SETVALUE (-10e6) #define GROUNDHEIGHT_VALID_MINVALUE ( -9e6) class Heightmappish { public: virtual f32 getGroundHeight(v2s16 p, bool generate=true) = 0; virtual void setGroundHeight(v2s16 p, f32 y, bool generate=true) = 0; v2f32 getSlope(v2s16 p) { f32 y0 = getGroundHeight(p, false); v2s16 dirs[] = { v2s16(1,0), v2s16(0,1), }; v2f32 fdirs[] = { v2f32(1,0), v2f32(0,1), }; v2f32 slopevector(0.0, 0.0); for(u16 i=0; i<2; i++){ f32 y1 = 0.0; f32 y2 = 0.0; f32 count = 0.0; v2s16 p1 = p - dirs[i]; y1 = getGroundHeight(p1, false); if(y1 > GROUNDHEIGHT_VALID_MINVALUE){ y1 -= y0; count += 1.0; } else y1 = 0; v2s16 p2 = p + dirs[i]; y2 = getGroundHeight(p2, false); if(y2 > GROUNDHEIGHT_VALID_MINVALUE){ y2 -= y0; count += 1.0; } else y2 = 0; if(count < 0.001) return v2f32(0.0, 0.0); /* If y2 is higher than y1, slope is positive */ f32 slope = (y2 - y1)/count; slopevector += fdirs[i] * slope; } return slopevector; } }; // TODO: Get rid of this dummy wrapper class Heightmap : public Heightmappish /*, public ReferenceCounted*/ { }; class WrapperHeightmap : public Heightmap { Heightmappish *m_target; public: WrapperHeightmap(Heightmappish *target): m_target(target) { if(target == NULL) throw NullPointerException(); } f32 getGroundHeight(v2s16 p, bool generate=true) { return m_target->getGroundHeight(p, generate); } void setGroundHeight(v2s16 p, f32 y, bool generate=true) { m_target->setGroundHeight(p, y, generate); } }; /* Base class that defines a generator that gives out values at positions in 2-dimensional space. Can be given to UnlimitedHeightmap to feed stuff. These are always serialized as readable text ending in "\n" */ class ValueGenerator { public: ValueGenerator(){} virtual ~ValueGenerator(){} static ValueGenerator* deSerialize(std::string line); static ValueGenerator* deSerialize(std::istream &is) { std::string line; std::getline(is, line, '\n'); return deSerialize(line); } void serializeBase(std::ostream &os) { os<<getName()<<" "; } // Virtual methods virtual const char * getName() const = 0; virtual f32 getValue(v2s16 p) = 0; virtual void serialize(std::ostream &os) = 0; }; class ConstantGenerator : public ValueGenerator { public: f32 m_value; ConstantGenerator(f32 value) { m_value = value; } const char * getName() const { return "constant"; } f32 getValue(v2s16 p) { return m_value; } void serialize(std::ostream &os) { serializeBase(os); std::ostringstream ss; //ss.imbue(std::locale("C")); ss<<m_value<<"\n"; os<<ss.str(); } }; class LinearGenerator : public ValueGenerator { public: f32 m_height; v2f m_slope; LinearGenerator(f32 height, v2f slope) { m_height = height; m_slope = slope; } const char * getName() const { return "linear"; } f32 getValue(v2s16 p) { return m_height + m_slope.X * p.X + m_slope.Y * p.Y; } void serialize(std::ostream &os) { serializeBase(os); std::ostringstream ss; //ss.imbue(std::locale("C")); ss<<m_height<<" "<<m_slope.X<<" "<<m_slope.Y<<"\n"; os<<ss.str(); } }; class PowerGenerator : public ValueGenerator { public: f32 m_height; v2f m_slope; f32 m_power; PowerGenerator(f32 height, v2f slope, f32 power) { m_height = height; m_slope = slope; m_power = power; } const char * getName() const { return "power"; } f32 getValue(v2s16 p) { return m_height + m_slope.X * pow((f32)p.X, m_power) + m_slope.Y * pow((f32)p.Y, m_power); } void serialize(std::ostream &os) { serializeBase(os); std::ostringstream ss; //ss.imbue(std::locale("C")); ss<<m_height<<" " <<m_slope.X<<" " <<m_slope.Y<<" " <<m_power<<"\n"; os<<ss.str(); } }; class FixedHeightmap : public Heightmap { // A meta-heightmap on which this heightmap is located // (at m_pos_on_master * m_blocksize) Heightmap * m_master; // Position on master heightmap (in blocks) v2s16 m_pos_on_master; s32 m_blocksize; // This is (W-1) = (H-1) // These are the actual size of the data s32 W; s32 H; f32 *m_data; public: FixedHeightmap(Heightmap * master, v2s16 pos_on_master, s32 blocksize): m_master(master), m_pos_on_master(pos_on_master), m_blocksize(blocksize) { W = m_blocksize+1; H = m_blocksize+1; m_data = NULL; m_data = new f32[(blocksize+1)*(blocksize+1)]; for(s32 i=0; i<(blocksize+1)*(blocksize+1); i++){ m_data[i] = GROUNDHEIGHT_NOTFOUND_SETVALUE; } } ~FixedHeightmap() { if(m_data) delete[] m_data; } v2s16 getPosOnMaster() { return m_pos_on_master; } /* TODO: BorderWrapper class or something to allow defining borders that wrap to an another heightmap. The algorithm should be allowed to edit stuff over the border and on the border in that case, too. This will allow non-square heightmaps, too. (probably) */ void print() { printf("FixedHeightmap::print(): size is %ix%i\n", W, H); for(s32 y=0; y<H; y++){ for(s32 x=0; x<W; x++){ /*if(getSeeded(v2s16(x,y))) printf("S");*/ f32 n = getGroundHeight(v2s16(x,y)); if(n < GROUNDHEIGHT_VALID_MINVALUE) printf(" - "); else printf("% -5.1f ", getGroundHeight(v2s16(x,y))); } printf("\n"); } } bool overborder(v2s16 p) { return (p.X < 0 || p.X >= W || p.Y < 0 || p.Y >= H); } bool atborder(v2s16 p) { if(overborder(p)) return false; return (p.X == 0 || p.X == W-1 || p.Y == 0 || p.Y == H-1); } void setGroundHeight(v2s16 p, f32 y, bool generate=false) { /*dstream<<"FixedHeightmap::setGroundHeight((" <<p.X<<","<<p.Y <<"), "<<y<<")"<<std::endl;*/ if(overborder(p)) throw InvalidPositionException(); m_data[p.Y*W + p.X] = y; } // Returns true on success, false on railure. bool setGroundHeightParent(v2s16 p, f32 y, bool generate=false) { /*// Position on master v2s16 blockpos_nodes = m_pos_on_master * m_blocksize; v2s16 nodepos_master = blockpos_nodes + p; dstream<<"FixedHeightmap::setGroundHeightParent((" <<p.X<<","<<p.Y <<"), "<<y<<"): nodepos_master=(" <<nodepos_master.X<<"," <<nodepos_master.Y<<")"<<std::endl; m_master->setGroundHeight(nodepos_master, y, false);*/ // Try to set on master bool master_got_it = false; if(overborder(p) || atborder(p)) { try{ // Position on master v2s16 blockpos_nodes = m_pos_on_master * m_blocksize; v2s16 nodepos_master = blockpos_nodes + p; m_master->setGroundHeight(nodepos_master, y, false); master_got_it = true; } catch(InvalidPositionException &e) { } } if(overborder(p)) return master_got_it; setGroundHeight(p, y); return true; } f32 getGroundHeight(v2s16 p, bool generate=false) { if(overborder(p)) return GROUNDHEIGHT_NOTFOUND_SETVALUE; return m_data[p.Y*W + p.X]; } f32 getGroundHeightParent(v2s16 p) { /*v2s16 blockpos_nodes = m_pos_on_master * m_blocksize; return m_master->getGroundHeight(blockpos_nodes + p, false);*/ if(overborder(p) == false){ f32 h = getGroundHeight(p); if(h > GROUNDHEIGHT_VALID_MINVALUE) return h; } // Position on master v2s16 blockpos_nodes = m_pos_on_master * m_blocksize; f32 h = m_master->getGroundHeight(blockpos_nodes + p, false); return h; } f32 avgNeighbours(v2s16 p, s16 d); f32 avgDiagNeighbours(v2s16 p, s16 d); void makeDiamond( v2s16 center, s16 a, f32 randmax, core::map<v2s16, bool> &next_squares); void makeSquare( v2s16 center, s16 a, f32 randmax, core::map<v2s16, bool> &next_diamonds); void DiamondSquare(f32 randmax, f32 randfactor); /* corners: [i]=XY: [0]=00, [1]=10, [2]=11, [3]=10 */ void generateContinued(f32 randmax, f32 randfactor, f32 *corners); static u32 serializedLength(u8 version, u16 blocksize); u32 serializedLength(u8 version); void serialize(u8 *dest, u8 version); void deSerialize(u8 *source, u8 version); /*static FixedHeightmap * deSerialize(u8 *source, u32 size, u32 &usedsize, Heightmap *master, u8 version);*/ }; class OneChildHeightmap : public Heightmap { s16 m_blocksize; public: FixedHeightmap m_child; OneChildHeightmap(s16 blocksize): m_blocksize(blocksize), m_child(this, v2s16(0,0), blocksize) { } f32 getGroundHeight(v2s16 p, bool generate=true) { if(p.X < 0 || p.X > m_blocksize || p.Y < 0 || p.Y > m_blocksize) return GROUNDHEIGHT_NOTFOUND_SETVALUE; return m_child.getGroundHeight(p); } void setGroundHeight(v2s16 p, f32 y, bool generate=true) { //dstream<<"OneChildHeightmap::setGroundHeight()"<<std::endl; if(p.X < 0 || p.X > m_blocksize || p.Y < 0 || p.Y > m_blocksize) throw InvalidPositionException(); m_child.setGroundHeight(p, y); } };


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