The attribute system is based on the custom AttributeTag as the basic attribute type definition, and is divided into three basic types: Primary, Base, and Parameter. Use attributes ( FAttributeInfo ) to store, calculate, and modify gameplay-related floating point values. These values can describe any characteristic of their owner, such as the character's health points, the character's attack power, or the number of times the character has been hit. Actors store their properties in their properties component, which helps manage the properties of the Actor to which the component belongs.

AttributeTag

This is a data structure similar to GameplayTag. You can use it as GameplayTag to reduce the burden of GameplayTag. Its management is located in Edit→ProjectSettings→AttributeTags.

AttributeSystemComponent

This is an Actor component that you can add to any Actor to give it attribute information.

AttributeInfo

Properties store a number of different values. Base value, modified value, maximum value, etc. The current value is determined by a combination of the underlying range modification value.

• Base value: This is used to fix the fixed attribute value size of this attribute (such as the change of the basic value due to the increase of PrimaryAttribute, the attribute bonus effect brought by equipment, etc.).
• Modified value: usually used for any changes to attributes (such as reduced health due to damage, temporary increase in attribute values due to potion effects, etc.). Generally speaking, content that requires more changes should be changed. Current value (i.e. modified value).
• Maximum value: Generally used for statistical attributes (such as health and stamina), because they are usually limited to the maximum value.

Create Attributes

The system provides two ways to create attributes.