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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
- {
- if(protocol_version <= 17)
- writeU8(os, 1); // version
- else
- writeU8(os, 2); // version
- writeF1000(os, full_punch_interval);
- writeS16(os, max_drop_level);
- writeU32(os, groupcaps.size());
- for(std::map<std::string, ToolGroupCap>::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(std::map<int, float>::const_iterator
- i = cap->times.begin(); i != cap->times.end(); i++){
- writeS16(os, i->first);
- writeF1000(os, i->second);
- }
- }
- if(protocol_version > 17){
- writeU32(os, damageGroups.size());
- for(std::map<std::string, s16>::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, 0.0, 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(std::map<std::string, ToolGroupCap>::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(std::map<std::string, s16>::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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