Update 1.4.7: Optimization, Gunplay, Zombie Behavior — Zombiefield Steam update #541403

This update focuses on performance improvements Many players reported performance issues, so I worked on optimizing the game. It should now run smoothly even on low-end systems. For example, during testing on my 7-year-old laptop (with one fan disconnected and the GTX 1050 disabled), the game held a stable 60 FPS at start and goes worse with 200+ zombies lurking on the map. Weapon recoil and kickback now have proper visual feedback, making gunplay feel more responsive and satisfying. Zombies can now spawn not only in underground areas but also on the surface. They will start chasing contractors only after visually spotting them at a close enough distance. I’ve also added turning animations, so their movements look more natural when they react. The muzzle flashes on weapons has been reduced to avoid possible discomfort for light-sensitive players. M-pistol firing sounds was adjusted and b...