作成中のゲームのインターフェイスをC++で実装しようとしていますが、エラーが発生します。
これが私が作成したインターフェースとそのサブクラスです:
//Attack.h
//defines a set of values associated with all attacks
//and an interface for all attacks
typedef unsigned const int attack_type;
typedef unsigned const int p_attack_type;
//defines the attack types
static const attack_type NORMAL = 0;
static const attack_type ADDER = 1;
static const attack_type MULTIPLIER = 2;
static const attack_type AREA_OF_EFFECT = 3;
static const attack_type DAMAGE_OVER_TIME = 4;
static const attack_type STATUS = 5;
//String representation of the names of attack types
static std::string attack_types [] = {"Normal","Adder","Multiplier","Area-Of-Effect","Damage-Over-Time","Status"};
class Attack
{
protected:
std::string attack_name;//the name of this attack
attack_type type;//the type of attack this represents
int cool_down_turns;//represents the number of turns this ability cannot be used after being used
bool causesGlobalCooldown;//does this attack cause ALL abilities to cooldown -- during combat should force cooldown on everything
bool on_cool_down;
public:
Attack(std::string name, attack_type, int cooldown_t, bool causesGlobalCooldown = false)
{
this->attack_name = name;
this->type = attack_type;
this->causesGlobalCooldown = causesGlobalCooldown;//whether or not ALL abilities need to cooldown
this->cool_down_turns = cooldown_t;//amount of turns that cooldown occurs
this->on_cool_down = false;//whether or not this attack is on cooldown
}
//the main method called to perform this attack
//calculate damage, calculate cooldown -- for spells calculate cost
//return the amount of damage this attack does
virtual int do_attack(int modifier, int roll)
{
//calculate damage
int damage = calculate_damage(modifier,roll);
//check cooldown
if(this->cool_down_turns>0)
{
this->cooldown(true);
}
return damage;
}
//defined by sub classes -- useful to tell you how much damage the attack is going to do
virtual int calculate_damage(int modifier, int roll) = 0;
//**standard method definitions**//
//get the attack name
std::string get_attack_name() const
{
return this->attack_name;
}
//get the attack type
attack_type get_attack_type() const
{
return this->type;
}
//get the attack type name of this attack
std::string get_attack_type_name() const
{
return attack_types[this->type];
}
//check the cooldown status of this attack
bool cooldown() const
{
return on_cool_down;
}
//set the cooldown status of this attack
void cooldown(bool set)
{
this->on_cool_down = set;
}
};
サブクラスは次のとおりです。
/*
* Normal.cpp
*
* Created on: Jul 15, 2012
* Author: christian
* Standard Definition of a Normal attack
*/
#include "Attack.h"
class Normal : public Attack
{
public:
Normal(std::string name)
{
Attack(name,NORMAL);
}
int calculate_damage(int modifier, int roll) const
{
return roll + modifier;
}
};
コンパイラから返されるエラーは次のとおりです。タイプ「Attack」は、継承された純粋仮想メソッド「Attack::calculate_damage」を実装する必要があります。
誰かがこれの正しい構文を知っていますか?継承は正しく設定されていますか?