tool.h

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/*
Minetest
Copyright (C) 2010-2013 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.
*/
 
#pragma once
 
#include "irrlichttypes.h"
#include <string>
#include <iostream>
#include "itemgroup.h"
#include <json/json.h>
 
struct ItemDefinition;
 
struct ToolGroupCap
{
    std::unordered_map<int, float> times;
    int maxlevel = 1;
    int uses = 20;
 
    ToolGroupCap() = default;
 
    bool getTime(int rating, float *time) const
    {
        std::unordered_map<int, float>::const_iterator i = times.find(rating);
        if (i == times.end()) {
            *time = 0;
            return false;
        }
        *time = i->second;
        return true;
    }
 
    void toJson(Json::Value &object) const;
    void fromJson(const Json::Value &json);
};
 
 
typedef std::unordered_map<std::string, struct ToolGroupCap> ToolGCMap;
typedef std::unordered_map<std::string, s16> DamageGroup;
 
struct ToolCapabilities
{
    float full_punch_interval;
    int max_drop_level;
    ToolGCMap groupcaps;
    DamageGroup damageGroups;
    int punch_attack_uses;
 
    ToolCapabilities(
            float full_punch_interval_ = 1.4f,
            int max_drop_level_ = 1,
            const ToolGCMap &groupcaps_ = ToolGCMap(),
            const DamageGroup &damageGroups_ = DamageGroup(),
            int punch_attack_uses_ = 0
    ):
        full_punch_interval(full_punch_interval_),
        max_drop_level(max_drop_level_),
        groupcaps(groupcaps_),
        damageGroups(damageGroups_),
        punch_attack_uses(punch_attack_uses_)
    {}
 
    void serialize(std::ostream &os, u16 version) const;
    void deSerialize(std::istream &is);
    void serializeJson(std::ostream &os) const;
    void deserializeJson(std::istream &is);
};
 
struct DigParams
{
    bool diggable;
    // Digging time in seconds
    float time;
    // Caused wear
    u16 wear;
    std::string main_group;
 
    DigParams(bool a_diggable = false, float a_time = 0.0f, u16 a_wear = 0,
            const std::string &a_main_group = ""):
        diggable(a_diggable),
        time(a_time),
        wear(a_wear),
        main_group(a_main_group)
    {}
};
 
DigParams getDigParams(const ItemGroupList &groups,
        const ToolCapabilities *tp);
 
struct HitParams
{
    s16 hp;
    u16 wear;
 
    HitParams(s16 hp_ = 0, u16 wear_ = 0):
        hp(hp_),
        wear(wear_)
    {}
};
 
HitParams getHitParams(const ItemGroupList &armor_groups,
        const ToolCapabilities *tp, float time_from_last_punch);
 
HitParams getHitParams(const ItemGroupList &armor_groups,
        const ToolCapabilities *tp);
 
struct PunchDamageResult
{
    bool did_punch = false;
    int damage = 0;
    int wear = 0;
 
    PunchDamageResult() = default;
};
 
struct ItemStack;
 
PunchDamageResult getPunchDamage(
        const ItemGroupList &armor_groups,
        const ToolCapabilities *toolcap,
        const ItemStack *punchitem,
        float time_from_last_punch
);
 
f32 getToolRange(const ItemDefinition &def_selected, const ItemDefinition &def_hand);