Reworked the visible cells calculation to ensure the visible region is actually minimal, which should reduce the amount of rendering to be done by a small amount. Previously, the region would tend to overdraw by 2-3 cells in either direction. For isometric maps, there was also a bug where it would draw far too much vertically above the top of the map.
Changes in the shroud are now tracked. If a cell changes it will mark itself and its neighbors as dirty. During the render phase all dirty cells will have their vertices calculated and cached. If a cell is not dirty, the pre-calculated vertices are retrieved from cache. Then the sprite renderer is provided the sprite and the pre-calculated vertices to draw.
This prevents constant recalculation of vertices for the shroud in the render phase, requiring instead only dirty cells in the visible area. The update phase is reduced to a practical noop, instead incurring the cost only of changed cells each frame, rather than checking the visible area.
- Made Array.IndexOf available via extension method.
- Made ToHashSet extension method.
- Change collections queried often via Contains into sets.
- Avoid Count() extension if Count or Length property exist.
- Made Count() > 0 checks and variations calls to Any() instead.
- Don't call ToList/ToArray if there is no benefit to materializing the sequence.
- If the sequence does benefit from materialization, follow this general pattern:
- Collection queried often via Contains use ToHashSet to speed up lookups.
- Short lived variables use ToList. This is because ToArray requires an extra copy to output the final size.
- Collections persisted into fields or for a long time use ToArray to minimize memory overhead.
A globally shared sheet builder leaks memory and resources between mod switches. Instead, we create and inject the sheet builder during mod startup to ensure we still share the builder across all fonts, but can reclaim it when the mod is unloaded.
The HardwarePalette will now grow its palette buffer and texture in power-of-2 increments. This avoids it having to allocate memory for a full 256x256 texture up front. In practice the default mods use 22 or 23 palettes so a 32x256 texture is used. This means both the buffer and texture save neatly on memory. Additionally, HardwarePalette.ApplyModifiers sees a nice speedup as it has to transfer a much smaller amount of memory from the buffer to the texture.
To facilitate this change, the MaxPalettes constant is no more. Instead the PaletteReference deals with the calculation of the index and this is passed into the appropriate methods.
The OrderBy overload that takes an int generating key selector is faster than the one that requires a custom comparer. We extract a function from the ScreenZPosition function that determines the Z position of a WPos with an offset, but does not account for the tileset height. For the ordering function this is fine as only the relative magnitude of the comparison keys matter, so we don't need to spend time adjusting for the tileset height, as that won't affect the sort.
To resolve the ambiguity introduced when the introduction of isometric maps meant that cell and map coordinates were no longer equivalent, a new type has been introduced so they can each be represented separately.
Automatically formatted all files via VS. This generally corrects indentation, removes trailing whitespace and corrects misplaced tabs or spaces. Manually tweaked a few files where required.
Avoid allocating memory and resources for graphical elements that will never be drawn when starting a dedicated server. This reduces the server memory footprint by approx 17 MiB.
Additionally exposed an InitializeSettings method on game to initialize the global settings so that other classes can set up all the secret dependencies on the global settings required.
Textures, FrameBuffers and VertexBuffers allocated by the Sdl2 Renderer were only being released via finalizers. This could lead to OpenGL out of memory errors since resources may not be cleaned up in a timely manner. To avoid this, IDisposable has been implemented and transitively applied to classes that use these resources.
As a side-effect some static state is no longer static, particularly in Renderer, in order to facilitate this change and just for nicer design in general.
Also dispose some bitmaps.
