Shroud, access ProjectedCellLayer by array index over PPos index.
Performance improvement. Avoid the multiple PPos to array index
conversions in the same method call by calculating the cell
layer index once.
Background:
`Shroud.Tick` and `ProjectedCellLayer.Index(PPos puv)` shows up
in profile reports as one of the most expensive methods
(9% of CPU time).
In `Shroud.Tick` calls `ProjectedCellLayer.Index(PPos puv)` multiple
times for the same or different cell layers of the same dimension.
Improvement:
Benchmark results show an 0.5ms mean improvement in tick
time and 0.3 improvement in render time -
on a replay map of 1.12 min of play at max speed.
Render time:
render222052(bleed) render221934(this commit)
count 8144.000000 8144.000000
mean 11.410075 11.470100
std 5.004876 4.731463
min 3.450700 3.638400
25% 7.409100 7.015900
50% 12.410600 12.435900
75% 13.998100 14.242900
max 149.036200 149.656500
Tick time:
tick_time222043(bleed) tick_time221923(this commit)
count 2366.000000 2366.000000
mean 4.762923 4.275833
std 3.240976 3.206362
min 0.263900 1.653600
25% 4.145375 3.668600
50% 4.779350 4.240050
75% 5.232575 4.611775
max 85.751800 87.387100
Shroud.touchedCount to avoid Tick updates if no cells touched.
Avoids iterating over all map cells of the `touched` cell layer.
Tick time improvement of 40%+ - during at least the first two
minutes of gameplay.
During the first minutes of a game - out of every 1000 ticks
only 10-100 result in the Shroud - of any player - to be touched.
For certains player types (Neutral, Creep) less Shroud updates
are expected throughout a complete game.
Throughout a complete game human/AI players can also have no
Shroud touches during certain Ticks.
These config files often contain many repeated strings which result in different string references in memory. By using a pool, we can detect when the strings are equal and reuse an existing reference as strings are immutable.
The FromLines will now use a pool to de-duplicate strings for a single call. By allowing a pool to be provided as a parameter, we can reuse even more strings. The MapCache defines such a pool so that strings are reused across all maps in the cache for even more savings.
* Rename LeftColor and RightColor to MinColor and MaxColor
These are mapped from LowRadarColor and HighRadarColor in
the original inis, and appear to be used to set the bounding
values for selecting a random colour, NOT for left/right
pixels (which caused noticeably wrong banding).
* Adjust brightness based on terrain height.
MinHeightColorBrightness and MaxHeightColorBrightness
were chosen by trial/error to match the original
map preview rendering.
Inits that are logically singletons (e.g. actor
location or owner) should implement this interface
to avoid runtime inconsistencies.
Duplicate instances are rejected at init-time,
allowing simpler queries when they are used.
A shared ValueActorInit<T> is introduced to reduce duplication
in the most common init cases, and an ActorInitActorReference
allow actors to be referenced by map.yaml name.
If a mod uses rectangular maps and no height levels,
checking if the CPos is within Bounds
should be enough and cheaper than the whole ToMPos
conversion and checks.
Allows preplaced actors to be rendered on map preview when saving the
map.
Also removes requirements for ResourceLayer in OpenRA.Game and moves it
to OpenRA.Mods.Common.
