Fixes:
- Fixed the issue where weapon pickup/drop quantity was not working properly
- Fixed awkward NPC route finding
Updates:
- NPC mind(emotion, action) can now be seen in real time by turning on "Display NPC Minds" flag (Account/Options)
- NPC AI(neural network) can be turned on or off by "NPC AI" flag (Account/Options)
- All NPCs will now fire back with guns if attacked
- Low quality character models are replaced by better models
- Weapons can now be deleted by throwing away on the floor by pressing "Drop" button
- Characters will now drop the holding weapon if killed
- Gun holding animation is added
