114 lines
3.4 KiB
C++
114 lines
3.4 KiB
C++
/*
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Minetest-c55
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Copyright (C) 2011 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "materials.h"
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#include "mapnode.h"
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#include "nodedef.h"
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#include "tooldef.h"
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#include "utility.h"
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void MaterialProperties::serialize(std::ostream &os)
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{
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writeU8(os, 0); // version
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writeU8(os, diggability);
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writeF1000(os, constant_time);
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writeF1000(os, weight);
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writeF1000(os, crackiness);
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writeF1000(os, crumbliness);
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writeF1000(os, cuttability);
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writeF1000(os, flammability);
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}
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void MaterialProperties::deSerialize(std::istream &is)
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{
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int version = readU8(is);
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if(version != 0)
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throw SerializationError("unsupported MaterialProperties version");
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diggability = (enum Diggability)readU8(is);
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constant_time = readF1000(is);
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weight = readF1000(is);
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crackiness = readF1000(is);
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crumbliness = readF1000(is);
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cuttability = readF1000(is);
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flammability = readF1000(is);
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}
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DiggingProperties getDiggingProperties(const MaterialProperties *mp,
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const ToolDiggingProperties *tp, float time_from_last_punch)
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{
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if(mp->diggability == DIGGABLE_NOT)
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return DiggingProperties(false, 0, 0);
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if(mp->diggability == DIGGABLE_CONSTANT)
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return DiggingProperties(true, mp->constant_time, 0);
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float time = tp->basetime;
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time += tp->dt_weight * mp->weight;
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time += tp->dt_crackiness * mp->crackiness;
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time += tp->dt_crumbliness * mp->crumbliness;
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time += tp->dt_cuttability * mp->cuttability;
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if(time < 0.2)
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time = 0.2;
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float durability = tp->basedurability;
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durability += tp->dd_weight * mp->weight;
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durability += tp->dd_crackiness * mp->crackiness;
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durability += tp->dd_crumbliness * mp->crumbliness;
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durability += tp->dd_cuttability * mp->cuttability;
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if(durability < 1)
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durability = 1;
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if(time_from_last_punch < tp->full_punch_interval){
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float f = time_from_last_punch / tp->full_punch_interval;
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time /= f;
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durability /= f;
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}
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float wear = 1.0 / durability;
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u16 wear_i = 65535.*wear;
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return DiggingProperties(true, time, wear_i);
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}
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DiggingProperties getDiggingProperties(const MaterialProperties *mp,
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const ToolDiggingProperties *tp)
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{
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return getDiggingProperties(mp, tp, 1000000);
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}
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DiggingProperties getDiggingProperties(u16 content,
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const ToolDiggingProperties *tp, INodeDefManager *nodemgr)
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{
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const MaterialProperties &mp = nodemgr->get(content).material;
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return getDiggingProperties(&mp, tp);
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}
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HittingProperties getHittingProperties(const MaterialProperties *mp,
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const ToolDiggingProperties *tp, float time_from_last_punch)
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{
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DiggingProperties digprop = getDiggingProperties(mp, tp,
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time_from_last_punch);
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// If digging time would be 1 second, 2 hearts go in 1 second.
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s16 hp = 2.0 * 2.0 / digprop.time;
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// Wear is the same as for digging a single node
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s16 wear = (float)digprop.wear;
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return HittingProperties(hp, wear);
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}
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