0. Currently, walls placed on walls by removing floor tiles will no longer disappear when loading a save file.

1. Adjusted the position and joint issues of various angled walls placed on the second floor of buildings.

2. Added angled wooden door walls and full animations.

3. Added angled wooden window walls and full animations.

4. Added angled stone door walls and full animations.

5. Added angled stone window walls and full animations.

6. Added angled iron door walls and full animations.

7. Added angled iron window walls and full animations.

8. Further optimized game performance.