Question

我正在尝试在实体组件系统中开发Views。

我在实体管理器中有一个名为View的函数，该函数返回Type T的所有组件。像这样适用于单个模板。

  requestForm: FormGroup;
  sampleRequest: SampleRequest = new SampleRequest();
  isSuccessful = false;
  isFailed = false;
  isProgress = false;
  errMsg: string;

  constructor(private fb: FormBuilder, private userService: UserService, private tokenStorage: TokenStorageService) { }

  ngOnInit() {
    this.requestForm = this.fb.group({
      title : ['', Validators.required],
      category : ['',Validators.required],
      description: ['', Validators.required],
      quantity: ['', [Validators.required, Validators.pattern]]
    });

  }



  onSubmit() {
    this.sampleRequest.title = this.requestForm.get('title').value;
    this.sampleRequest.category.id = this.requestForm.get('category').value; //here is the problem
    this.sampleRequest.user.id = this.tokenStorage.getUser().id;  //and here
    this.sampleRequest.description = this.requestForm.get('description').value;
    this.sampleRequest.quantity = this.requestForm.get('quantity').value;
    console.log(this.sampleRequest);
    this.userService.newSampleRequest(this.sampleRequest)
      .subscribe(
        data => {
          this.isSuccessful = true;
          this.isProgress = true;
        },
        error => {
          this.isFailed = true;
          this.isProgress = true;
          this.errMsg = error.error.message;
        }
      );
  }

}

ECSViewTest只是T的元组的Vector的包装，稍后将对其进行扩展。

ECSViewTest<T> View()
        {
            //--check if valid code removed

            ComponentArray<T>* componentArray = (ComponentArray<T>*)m_ComponentArrays.at(typeHash);

            ECSViewTest<T> view;
            for (size_t i = 0; i < componentArray->m_Size; i++)
            {
                view.sets.push_back(&componentArray->m_ComponentArray[i]);

            }

            return view;
        }

我的问题是，是否可以针对多种类型实现此功能，即视图可以找到并返回模板中2种或更多给定类型的所有组件。

template<class... Types>
    class ECSViewTest
    {
    public:

        //----------

        std::vector< std::tuple<Types*...>> sets;

        //ITERATOR IMPLEMENTATION
        //EXTRACT TUPLE DATA

    };

如何“遍历”每种Type中的类型以提取每个组件的数据？

填充矢量模板化类型

0 个答案: