Mask

Mask - similar to a tag, but uses only 1 bit of memory

• NOT Gives the option to build queries by masks only, can only be used as an additional search criterion
• Represented as a user structure without data with a marker interface IMask

Example:

public struct Visible : IMask { }

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Requires registration in the world between creation and initialization

MyEcs.Create(EcsConfig.Default());
//...
MyEcs.World.RegisterMaskType<Visible>();
//...
MyEcs.Initialize();

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Creation:

// Adding a mask to an entity (overload methods from 1-5 masks)
entity.SetMask<Flammable, Frozen, Visible>();

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Basic operations:

// Get the count of masks on an entity
int masksCount = entity.MasksCount();

// Check for the presence of ALL specified masks (overload methods from 1-3 masks)
entity.HasAllOfMasks<Flammable>();
entity.HasAllOfMasks<Flammable, Frozen, Visible>();

// Check for the presence of at least one specified mask (overload methods from 2-3 masks)
entity.HasAnyOfMasks<Flammable, Frozen, Visible>();

// Remove mask from entity (In DEBUG mode there will be an error if the entity is not present, 
// in release you cannot use if there is no guarantee that the mask is present) (overload methods from 1-5 masks)
entity.DeleteMask<Frozen>();

// Remove a mask from an entity if it exists (overload methods from 1-5 masks)
var deleted = entity.TryDeleteMask<Frozen>();