VisibilityType.CenterPosition reveals the actor
only if its CenterPosition is inside a cell that
is visible.
VisibilityType.Footprint reveals the actor if any
of its footprint cells are visible (this includes
Mobile actors moving between two cells).
Previously actors that could be frozen under fog but were currently visible would be rendered by the frozen under fog system constantly in order to keep a copy of the renderables ready to go for the frozen counterpart when the actor became invisible. Instead, we now delay this extra rendering until the actor actually becomes invisible. This eliminates the wasted rendering to generate renderables that were never used.
The FrozenUnderFog.Tick method will now reuse the calculation do by the frozen actor when it had to calculate its visibility, this prevents it having to re-do the fairly expensive visibility calculation.
When not disabled, ModifyRender doesn't actually alter the sequence, so we can just return it directly and avoid adding another layer of enumerable. If it is disabled, then the modifying enumerable has one less condition to check inside the loop.
- Don't call string.Format in Actor.ToString since it gets called often, instead prefer a simple concat.
- In HiddenUnderFog.IsVisible, avoid a needless level of lambda indirection.
When IsTraitDisabled is set, ModifyRender doesn't actually alter the sequence, so we can just return it directly and avoid adding another layer of enumerable. If it is unset, then the modifying enumerable has one less condition to check inside the loop.
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.
Upgradeable traits are notified whenever an upgrade of their declared types are granted or revoked. The traits maintain their own internal level counter, which is then used to enable or disable the trait functionality. A trait can register for multiple upgrade types which then all affect the internal level counter.
IDisabledTrait for identifying (and filtering) disabled traits
UpgradableTrait provides an abstract base for traits to support upgrade levels
Added IDisabledTrait support to GlobalButtonOrderGenerator
Includes rework by pchote with alterations.
