Function getValueMap

packages/core/src/ECS/Decorators/EntityRefDecorator.ts:28–35

* 获取或创建组件的EntityRef值存储Map

(component: Component)

 * 获取或创建组件的EntityRef值存储Map
 */
function getValueMap(component: Component): Map<string, Entity | null> {
    let map = (component as any)[ENTITY_REF_VALUES];
    if (!map) {
        map = new Map<string, Entity | null>();
        (component as any)[ENTITY_REF_VALUES] = map;
    }
    return map;
}

/**
 * Entity引用装饰器