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/*
Minetest
Copyright (C) 2013 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 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 "tool.h"
#include "itemgroup.h"
#include "log.h"
#include "inventory.h"
#include "exceptions.h"
#include "util/serialize.h"
#include "util/numeric.h"
void ToolCapabilities::serialize(std::ostream &os, u16 protocol_version) const
{
writeU8(os, 2); // version (protocol >= 18)
writeF1000(os, full_punch_interval);
writeS16(os, max_drop_level);
writeU32(os, groupcaps.size());
for (ToolGCMap::const_iterator i = groupcaps.begin(); i != groupcaps.end(); ++i) {
const std::string *name = &i->first;
const ToolGroupCap *cap = &i->second;
os << serializeString(*name);
writeS16(os, cap->uses);
writeS16(os, cap->maxlevel);
writeU32(os, cap->times.size());
for (UNORDERED_MAP<int, float>::const_iterator
j = cap->times.begin(); j != cap->times.end(); ++j) {
writeS16(os, j->first);
writeF1000(os, j->second);
}
}
writeU32(os, damageGroups.size());
for (DamageGroup::const_iterator i = damageGroups.begin();
i != damageGroups.end(); ++i) {
os << serializeString(i->first);
writeS16(os, i->second);
}
}
void ToolCapabilities::deSerialize(std::istream &is)
{
int version = readU8(is);
if(version != 1 && version != 2) throw SerializationError(
"unsupported ToolCapabilities version");
full_punch_interval = readF1000(is);
max_drop_level = readS16(is);
groupcaps.clear();
u32 groupcaps_size = readU32(is);
for(u32 i=0; i<groupcaps_size; i++){
std::string name = deSerializeString(is);
ToolGroupCap cap;
cap.uses = readS16(is);
cap.maxlevel = readS16(is);
u32 times_size = readU32(is);
for(u32 i=0; i<times_size; i++){
int level = readS16(is);
float time = readF1000(is);
cap.times[level] = time;
}
groupcaps[name] = cap;
}
if(version == 2)
{
u32 damage_groups_size = readU32(is);
for(u32 i=0; i<damage_groups_size; i++){
std::string name = deSerializeString(is);
s16 rating = readS16(is);
damageGroups[name] = rating;
}
}
}
DigParams getDigParams(const ItemGroupList &groups,
const ToolCapabilities *tp, float time_from_last_punch)
{
//infostream<<"getDigParams"<<std::endl;
/* Check group dig_immediate */
switch(itemgroup_get(groups, "dig_immediate")){
case 2:
//infostream<<"dig_immediate=2"<<std::endl;
return DigParams(true, 0.5, 0, "dig_immediate");
case 3:
//infostream<<"dig_immediate=3"<<std::endl;
return DigParams(true, 0.15, 0, "dig_immediate");
default:
break;
}
// Values to be returned (with a bit of conversion)
bool result_diggable = false;
float result_time = 0.0;
float result_wear = 0.0;
std::string result_main_group = "";
int level = itemgroup_get(groups, "level");
//infostream<<"level="<<level<<std::endl;
for (ToolGCMap::const_iterator i = tp->groupcaps.begin();
i != tp->groupcaps.end(); ++i) {
const std::string &name = i->first;
//infostream<<"group="<<name<<std::endl;
const ToolGroupCap &cap = i->second;
int rating = itemgroup_get(groups, name);
float time = 0;
bool time_exists = cap.getTime(rating, &time);
if(!result_diggable || time < result_time){
if(cap.maxlevel >= level && time_exists){
result_diggable = true;
int leveldiff = cap.maxlevel - level;
result_time = time / MYMAX(1, leveldiff);
if(cap.uses != 0)
result_wear = 1.0 / cap.uses / pow(3.0, (double)leveldiff);
else
result_wear = 0;
result_main_group = name;
}
}
}
//infostream<<"result_diggable="<<result_diggable<<std::endl;
//infostream<<"result_time="<<result_time<<std::endl;
//infostream<<"result_wear="<<result_wear<<std::endl;
if(time_from_last_punch < tp->full_punch_interval){
float f = time_from_last_punch / tp->full_punch_interval;
//infostream<<"f="<<f<<std::endl;
result_time /= f;
result_wear /= f;
}
u16 wear_i = 65535.*result_wear;
return DigParams(result_diggable, result_time, wear_i, result_main_group);
}
DigParams getDigParams(const ItemGroupList &groups,
const ToolCapabilities *tp)
{
return getDigParams(groups, tp, 1000000);
}
HitParams getHitParams(const ItemGroupList &armor_groups,
const ToolCapabilities *tp, float time_from_last_punch)
{
s16 damage = 0;
float full_punch_interval = tp->full_punch_interval;
for (DamageGroup::const_iterator i = tp->damageGroups.begin();
i != tp->damageGroups.end(); ++i) {
s16 armor = itemgroup_get(armor_groups, i->first);
damage += i->second * rangelim(time_from_last_punch / full_punch_interval, 0.0, 1.0)
* armor / 100.0;
}
return HitParams(damage, 0);
}
HitParams getHitParams(const ItemGroupList &armor_groups,
const ToolCapabilities *tp)
{
return getHitParams(armor_groups, tp, 1000000);
}
PunchDamageResult getPunchDamage(
const ItemGroupList &armor_groups,
const ToolCapabilities *toolcap,
const ItemStack *punchitem,
float time_from_last_punch
){
bool do_hit = true;
{
if(do_hit && punchitem){
if(itemgroup_get(armor_groups, "punch_operable") &&
(toolcap == NULL || punchitem->name == ""))
do_hit = false;
}
if(do_hit){
if(itemgroup_get(armor_groups, "immortal"))
do_hit = false;
}
}
PunchDamageResult result;
if(do_hit)
{
HitParams hitparams = getHitParams(armor_groups, toolcap,
time_from_last_punch);
result.did_punch = true;
result.wear = hitparams.wear;
result.damage = hitparams.hp;
}
return result;
}
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