How do I implement the strategy pattern in game engines with C++?

The Strategy Pattern is a behavioral design pattern that enables selecting an algorithm's behavior at runtime. In game engines, this pattern helps in managing various behaviors or strategies for game elements like characters, weapons, and AI, allowing for greater flexibility and reusability.

Here's a simplified example that demonstrates how to implement the Strategy Pattern in a C++ game engine:


    // Strategy Interface
    class IWeaponStrategy {
    public:
        virtual void useWeapon() = 0;
    };

    // Concrete Strategies
    class SwordStrategy : public IWeaponStrategy {
    public:
        void useWeapon() override {
            std::cout << "Swinging a sword!" << std::endl;
        }
    };

    class BowStrategy : public IWeaponStrategy {
    public:
        void useWeapon() override {
            std::cout << "Shooting an arrow!" << std::endl;
        }
    };

    // Context Class
    class Player {
    private:
        IWeaponStrategy* weaponStrategy;
    public:
        void setWeaponStrategy(IWeaponStrategy* strategy) {
            weaponStrategy = strategy;
        }

        void attack() {
            if (weaponStrategy) {
                weaponStrategy->useWeapon();
            }
        }
    };

    // Usage Example
    int main() {
        Player player;
        
        // Set strategy to Sword
        SwordStrategy sword;
        player.setWeaponStrategy(&sword);
        player.attack();  // Output: Swinging a sword!

        // Set strategy to Bow
        BowStrategy bow;
        player.setWeaponStrategy(&bow);
        player.attack();  // Output: Shooting an arrow!

        return 0;
    }

How do I implement the strategy pattern in game engines with C++?

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How do I implement the strategy pattern in game engines with C++?

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