Updated the movement system

Updated the movement system: my underground travel time now closely matches the player's. Enhanced mechanics for picking up ammo and interacting with objects, improved hand tremor when holding a pistol, and added body lean when looking up. New stumbles and missteps now occur when traversing cluttered areas. Enemy physics have been overhauled. Photo-scanned assets have been successfully tested as in-game props, with further optimizations using MIP-mapping. The entire fort is a real, photo-scanned location. #3dgamedevelopment #indiedev #blendergameengine #horror #art #gamedevblog #optimization