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/*
Minetest-c55
Copyright (C) 2011 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.
*/
#include "materials.h"
#include "mapnode.h"
#include "nodedef.h"
#include "tooldef.h"
#include "utility.h"
void MaterialProperties::serialize(std::ostream &os)
{
writeU8(os, 0); // version
writeU8(os, diggability);
writeF1000(os, constant_time);
writeF1000(os, weight);
writeF1000(os, crackiness);
writeF1000(os, crumbliness);
writeF1000(os, cuttability);
writeF1000(os, flammability);
}
void MaterialProperties::deSerialize(std::istream &is)
{
int version = readU8(is);
if(version != 0)
throw SerializationError("unsupported MaterialProperties version");
diggability = (enum Diggability)readU8(is);
constant_time = readF1000(is);
weight = readF1000(is);
crackiness = readF1000(is);
crumbliness = readF1000(is);
cuttability = readF1000(is);
flammability = readF1000(is);
}
DiggingProperties getDiggingProperties(const MaterialProperties *mp,
const ToolDiggingProperties *tp, float time_from_last_punch)
{
if(mp->diggability == DIGGABLE_NOT)
return DiggingProperties(false, 0, 0);
if(mp->diggability == DIGGABLE_CONSTANT)
return DiggingProperties(true, mp->constant_time, 0);
float time = tp->basetime;
time += tp->dt_weight * mp->weight;
time += tp->dt_crackiness * mp->crackiness;
time += tp->dt_crumbliness * mp->crumbliness;
time += tp->dt_cuttability * mp->cuttability;
if(time < 0.2)
time = 0.2;
float durability = tp->basedurability;
durability += tp->dd_weight * mp->weight;
durability += tp->dd_crackiness * mp->crackiness;
durability += tp->dd_crumbliness * mp->crumbliness;
durability += tp->dd_cuttability * mp->cuttability;
if(durability < 1)
durability = 1;
if(time_from_last_punch < tp->full_punch_interval){
float f = time_from_last_punch / tp->full_punch_interval;
time /= f;
durability /= f;
}
float wear = 1.0 / durability;
u16 wear_i = 65535.*wear;
return DiggingProperties(true, time, wear_i);
}
DiggingProperties getDiggingProperties(const MaterialProperties *mp,
const ToolDiggingProperties *tp)
{
return getDiggingProperties(mp, tp, 1000000);
}
DiggingProperties getDiggingProperties(u16 content,
const ToolDiggingProperties *tp, INodeDefManager *nodemgr)
{
const MaterialProperties &mp = nodemgr->get(content).material;
return getDiggingProperties(&mp, tp);
}
HittingProperties getHittingProperties(const MaterialProperties *mp,
const ToolDiggingProperties *tp, float time_from_last_punch)
{
DiggingProperties digprop = getDiggingProperties(mp, tp,
time_from_last_punch);
// If digging time would be 1 second, 2 hearts go in 1 second.
s16 hp = 2.0 * 2.0 / digprop.time + 0.5;
// Wear is the same as for digging a single node
s16 wear = (float)digprop.wear + 0.5;
return HittingProperties(hp, wear);
}
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