5-init.cpp

const int ZOMBIE_COUNT = 20;
const int SPAWN_FREQ = 3;
unsigned int lastSpawnTime = 0, currentTime;
int zombieAnimSpeed = 8;
int zombieSpeed = 3;
SDL_Texture* zombieTexture;
struct Zombie {
    float x, y;
    int w = 64;                 // Width and height have been moved here for a cleaner code
    int h = 64;
    float vX, vY;
    int dir;
    int frameX, frameY;
    bool animCompleted = false; // Is the attack animation completed?
    bool attack = false;        // Has the zombie inflicted damage?
    bool alive = false;
    std::string state;
};