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src/core/Skills.cpp

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+#include "Skills.h"
+#include "Characters.h"
+#include <sstream>
+#include <random>
+
+// 随机数生成器
+static std::random_device rd;
+static std::mt19937 gen(rd());
+
+// ===== NormalAttack 实现 =====
+
+NormalAttack::NormalAttack() {
+    m_name = "Normal Attack";
+    m_description = "Basic attack";
+    m_manaCost = 0;
+    m_cooldown = 0;
+}
+
+std::string NormalAttack::execute(ICharacter& caster, ICharacter& target) {
+    int damage = caster.getAttack();
+    target.takeDamage(damage);
+    
+    std::ostringstream oss;
+    oss << caster.getName() << " attacks " << target.getName() 
+        << " for " << damage << " damage!";
+    return oss.str();
+}
+
+// ===== HeavyStrike 实现 =====
+
+HeavyStrike::HeavyStrike() {
+    m_name = "Heavy Strike";
+    m_description = "Powerful strike consuming rage";
+    m_manaCost = 10;
+    m_cooldown = 0;
+}
+
+std::string HeavyStrike::execute(ICharacter& caster, ICharacter& target) {
+    Warrior* warrior = dynamic_cast<Warrior*>(&caster);
+    if (!warrior || !caster.consumeMana(m_manaCost)) {
+        return caster.getName() + " failed to use " + m_name + "!";
+    }
+    
+    // 造成 1.5 倍伤害
+    int damage = static_cast<int>(caster.getAttack() * 1.5);
+    target.takeDamage(damage);
+    
+    std::ostringstream oss;
+    oss << caster.getName() << " uses [Heavy Strike] on " << target.getName()
+        << " for " << damage << " damage!";
+    return oss.str();
+}
+
+// ===== DefensiveStance 实现 =====
+
+DefensiveStance::DefensiveStance() {
+    m_name = "Defensive Stance";
+    m_description = "Heal and boost defense";
+    m_manaCost = 15;
+    m_cooldown = 0;
+}
+
+std::string DefensiveStance::execute(ICharacter& caster, ICharacter& target) {
+    if (!caster.consumeMana(m_manaCost)) {
+        return caster.getName() + " failed to use " + m_name + "!";
+    }
+    
+    int healAmount = 20;
+    caster.heal(healAmount);
+    
+    std::ostringstream oss;
+    oss << caster.getName() << " uses [Defensive Stance] and heals " 
+        << healAmount << " HP!";
+    return oss.str();
+}
+
+// ===== Fireball 实现 =====
+
+Fireball::Fireball() {
+    m_name = "Fireball";
+    m_description = "Launch a fireball";
+    m_manaCost = 20;
+    m_cooldown = 0;
+}
+
+std::string Fireball::execute(ICharacter& caster, ICharacter& target) {
+    if (!caster.consumeMana(m_manaCost)) {
+        return caster.getName() + " failed to use " + m_name + "!";
+    }
+    
+    // 造成 1.8 倍魔法伤害
+    int damage = static_cast<int>(caster.getAttack() * 1.8);
+    target.takeDamage(damage);
+    
+    std::ostringstream oss;
+    oss << caster.getName() << " casts [Fireball] at " << target.getName()
+        << " for " << damage << " magic damage!";
+    return oss.str();
+}
+
+// ===== FrostNova 实现 =====
+
+FrostNova::FrostNova() {
+    m_name = "Frost Nova";
+    m_description = "Freeze and damage enemy";
+    m_manaCost = 25;
+    m_cooldown = 0;
+}
+
+std::string FrostNova::execute(ICharacter& caster, ICharacter& target) {
+    if (!caster.consumeMana(m_manaCost)) {
+        return caster.getName() + " failed to use " + m_name + "!";
+    }
+    
+    int damage = static_cast<int>(caster.getAttack() * 1.3);
+    target.takeDamage(damage);
+    
+    std::ostringstream oss;
+    oss << caster.getName() << " casts [Frost Nova] on " << target.getName()
+        << " for " << damage << " frost damage!";
+    return oss.str();
+}
+
+// ===== ArcaneShield 实现 =====
+
+ArcaneShield::ArcaneShield() {
+    m_name = "Arcane Shield";
+    m_description = "Create magical shield";
+    m_manaCost = 30;
+    m_cooldown = 0;
+}
+
+std::string ArcaneShield::execute(ICharacter& caster, ICharacter& target) {
+    Mage* mage = dynamic_cast<Mage*>(&caster);
+    if (!mage || !caster.consumeMana(m_manaCost)) {
+        return caster.getName() + " failed to use " + m_name + "!";
+    }
+    
+    int shieldAmount = 30;
+    mage->addShield(shieldAmount);
+    
+    std::ostringstream oss;
+    oss << caster.getName() << " creates [Arcane Shield] absorbing " 
+        << shieldAmount << " damage!";
+    return oss.str();
+}
+
+// ===== Heal 实现 =====
+
+Heal::Heal() {
+    m_name = "Heal";
+    m_description = "Restore health";
+    m_manaCost = 15;
+    m_cooldown = 0;
+}
+
+std::string Heal::execute(ICharacter& caster, ICharacter& target) {
+    if (!caster.consumeMana(m_manaCost)) {
+        return caster.getName() + " failed to use " + m_name + "!";
+    }
+    
+    int healAmount = 30;
+    target.heal(healAmount);
+    
+    std::ostringstream oss;
+    oss << caster.getName() << " casts [Heal] on " << target.getName()
+        << " restoring " << healAmount << " HP!";
+    return oss.str();
+}