3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #include "itemgroup.h"
23 #include "inventory.h"
24 #include "exceptions.h"
25 #include "util/serialize.h"
26 #include "util/numeric.h"
28 void ToolCapabilities::serialize(std::ostream &os, u16 protocol_version) const
30 if(protocol_version <= 17)
31 writeU8(os, 1); // version
33 writeU8(os, 2); // version
34 writeF1000(os, full_punch_interval);
35 writeS16(os, max_drop_level);
36 writeU32(os, groupcaps.size());
37 for (ToolGCMap::const_iterator i = groupcaps.begin(); i != groupcaps.end(); ++i) {
38 const std::string *name = &i->first;
39 const ToolGroupCap *cap = &i->second;
40 os<<serializeString(*name);
41 writeS16(os, cap->uses);
42 writeS16(os, cap->maxlevel);
43 writeU32(os, cap->times.size());
44 for (UNORDERED_MAP<int, float>::const_iterator
45 i = cap->times.begin(); i != cap->times.end(); ++i) {
46 writeS16(os, i->first);
47 writeF1000(os, i->second);
50 if(protocol_version > 17){
51 writeU32(os, damageGroups.size());
52 for (DamageGroup::const_iterator i = damageGroups.begin();
53 i != damageGroups.end(); ++i) {
54 os<<serializeString(i->first);
55 writeS16(os, i->second);
60 void ToolCapabilities::deSerialize(std::istream &is)
62 int version = readU8(is);
63 if(version != 1 && version != 2) throw SerializationError(
64 "unsupported ToolCapabilities version");
65 full_punch_interval = readF1000(is);
66 max_drop_level = readS16(is);
68 u32 groupcaps_size = readU32(is);
69 for(u32 i=0; i<groupcaps_size; i++){
70 std::string name = deSerializeString(is);
72 cap.uses = readS16(is);
73 cap.maxlevel = readS16(is);
74 u32 times_size = readU32(is);
75 for(u32 i=0; i<times_size; i++){
76 int level = readS16(is);
77 float time = readF1000(is);
78 cap.times[level] = time;
80 groupcaps[name] = cap;
84 u32 damage_groups_size = readU32(is);
85 for(u32 i=0; i<damage_groups_size; i++){
86 std::string name = deSerializeString(is);
87 s16 rating = readS16(is);
88 damageGroups[name] = rating;
93 DigParams getDigParams(const ItemGroupList &groups,
94 const ToolCapabilities *tp, float time_from_last_punch)
96 //infostream<<"getDigParams"<<std::endl;
97 /* Check group dig_immediate */
98 switch(itemgroup_get(groups, "dig_immediate")){
100 //infostream<<"dig_immediate=2"<<std::endl;
101 return DigParams(true, 0.5, 0, "dig_immediate");
103 //infostream<<"dig_immediate=3"<<std::endl;
104 return DigParams(true, 0.0, 0, "dig_immediate");
109 // Values to be returned (with a bit of conversion)
110 bool result_diggable = false;
111 float result_time = 0.0;
112 float result_wear = 0.0;
113 std::string result_main_group = "";
115 int level = itemgroup_get(groups, "level");
116 //infostream<<"level="<<level<<std::endl;
117 for (ToolGCMap::const_iterator i = tp->groupcaps.begin();
118 i != tp->groupcaps.end(); ++i) {
119 const std::string &name = i->first;
120 //infostream<<"group="<<name<<std::endl;
121 const ToolGroupCap &cap = i->second;
122 int rating = itemgroup_get(groups, name);
124 bool time_exists = cap.getTime(rating, &time);
125 if(!result_diggable || time < result_time){
126 if(cap.maxlevel >= level && time_exists){
127 result_diggable = true;
128 int leveldiff = cap.maxlevel - level;
129 result_time = time / MYMAX(1, leveldiff);
131 result_wear = 1.0 / cap.uses / pow(3.0, (double)leveldiff);
134 result_main_group = name;
138 //infostream<<"result_diggable="<<result_diggable<<std::endl;
139 //infostream<<"result_time="<<result_time<<std::endl;
140 //infostream<<"result_wear="<<result_wear<<std::endl;
142 if(time_from_last_punch < tp->full_punch_interval){
143 float f = time_from_last_punch / tp->full_punch_interval;
144 //infostream<<"f="<<f<<std::endl;
149 u16 wear_i = 65535.*result_wear;
150 return DigParams(result_diggable, result_time, wear_i, result_main_group);
153 DigParams getDigParams(const ItemGroupList &groups,
154 const ToolCapabilities *tp)
156 return getDigParams(groups, tp, 1000000);
159 HitParams getHitParams(const ItemGroupList &armor_groups,
160 const ToolCapabilities *tp, float time_from_last_punch)
163 float full_punch_interval = tp->full_punch_interval;
165 for (DamageGroup::const_iterator i = tp->damageGroups.begin();
166 i != tp->damageGroups.end(); ++i) {
167 s16 armor = itemgroup_get(armor_groups, i->first);
168 damage += i->second * rangelim(time_from_last_punch / full_punch_interval, 0.0, 1.0)
172 return HitParams(damage, 0);
175 HitParams getHitParams(const ItemGroupList &armor_groups,
176 const ToolCapabilities *tp)
178 return getHitParams(armor_groups, tp, 1000000);
181 PunchDamageResult getPunchDamage(
182 const ItemGroupList &armor_groups,
183 const ToolCapabilities *toolcap,
184 const ItemStack *punchitem,
185 float time_from_last_punch
189 if(do_hit && punchitem){
190 if(itemgroup_get(armor_groups, "punch_operable") &&
191 (toolcap == NULL || punchitem->name == ""))
195 if(itemgroup_get(armor_groups, "immortal"))
200 PunchDamageResult result;
203 HitParams hitparams = getHitParams(armor_groups, toolcap,
204 time_from_last_punch);
205 result.did_punch = true;
206 result.wear = hitparams.wear;
207 result.damage = hitparams.hp;