Game content update:
1. Add special effects for other equipment.
2. Fixed the issue that the texture of the new equipment was missing.
3. Two pieces of random equipment are provided at the beginning of the game.
4. Removed the action of moving the version number to the left at the start of the game.
5. Added five new background music to replace the previous background music.
6. Added and replaced the game-ending sound.
7. Added in-game sound effects for opening doors and cutting barbed wire.
8. Fixed the bug that the map event only detected the first piece of equipment.
9. Updated textures for four dropped items.
Game engine update:
1. Add the parameter of font color on the button when unchecked.
2. Add the font color setting interface when selected and unselected in the input module button class.
3. Delete two unused font files.
4. The audio module random background music number is generated using dynamic variables.
5. The random number generation interface of the random module adds the processing of error data.
6. Player vertex shader optimizes variable name length and reduces computation.
7. The coordinate module optimizes the edge detection function of restricted coordinates.
8. Coordinate module: Fixed the problem that the movement limit range of the record was missing in the restricted coordinate class.
9. The input module simplifies the function of adding buttons to the button page class.
10. Add shader program to get interface for drawing layer class in the drawing module.
11. Draw module action loop class to add the function of binding shader.
12. Drawing module drawing layer class to increase the number of unsigned variable setting interface.
13. The Draw Module Action Loop feature is implemented using the Rebind Texture mode.
14. The Draw module removes the old version of the Reinitialize Texture interface.
15. Added enumeration information for collection 2 to the service module.