Describe the bug
This is an original bug, it also happens on the unmodified Caesar III.
I have a savegame where extra tiles appear at the edges.
To Reproduce
Steps to reproduce the behavior:
- Copy the savegame from Lux-96.zip in your julius repository.
- Open it.
- Scroll to the end of the map.
- There is a tile outside the map borders, I can't delete it or construct on it.
Expected behavior
Only black around the straight map edges.
Screenshots and saved games
Additional context
- Version: https://github.com/bvschaik/julius/commit/5ae213f15a77c879b7e7939224167678016c1520 from AppVeyor
- OS: Windows 10
devnoname120
All 5 comments
Could it be because there is no defined entry and exit point? The bugged tiles seem to be close to those points...
crudelios
on 19 Mar 2019
That's possible.
@bvschaik Could you label this issue "Original bug"? I think it will help to distinguish bugs introduced by Julius from original bugs at a glance.
devnoname120
on 21 Mar 2019
The cause of these artifacts: terrain is stored as 16-bit mask of terrain flags. For tiles beyond the edge of the map, the value 5 is used, which means tree (1) + water (4). Since these cannot normally occur together, a value of 5 is considered beyond the map limits and is drawn as black tile.
The two tiles instead have value 7: tree (1) + water (4) + rock (2). Which means that the game is drawing nothing at that spot, since it's not drawing a black tile, but also not drawing a normal tile, so the artifacts you see are actually from the previous frame, before you scrolled more black area into view.
Basically it's a small corruption in the file, and it may have already been present in the .scn file. With which game was the city built originally? Do you still have the .scn?
bvschaik
on 29 Mar 2019
No, unfortunately I've found this savegame on the Internet when I was looking for big maps to test the framerate of the Vita port.
devnoname120
on 29 Mar 2019
Since this is a file corruption rather than an issue with the game itself, I'm going to close this.
bvschaik
on 30 Mar 2019
Related issues
jonathanmcnamee
路
3Comments
jdmillard
路
7Comments
Uberwire
路
5Comments
garganshul108
路
6Comments
bvschaik
路
7Comments
Most helpful comment
The cause of these artifacts: terrain is stored as 16-bit mask of terrain flags. For tiles beyond the edge of the map, the value 5 is used, which means tree (1) + water (4). Since these cannot normally occur together, a value of 5 is considered beyond the map limits and is drawn as black tile.
The two tiles instead have value 7: tree (1) + water (4) + rock (2). Which means that the game is drawing nothing at that spot, since it's not drawing a black tile, but also not drawing a normal tile, so the artifacts you see are actually from the previous frame, before you scrolled more black area into view.
Basically it's a small corruption in the file, and it may have already been present in the .scn file. With which game was the city built originally? Do you still have the .scn?