263 lines
9.6 KiB
TypeScript
263 lines
9.6 KiB
TypeScript
///<reference path="../Components/IUpdatable.ts" />
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module es {
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export class ComponentList {
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/**
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* 组件列表的全局updateOrder排序
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*/
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public static compareUpdatableOrder: IUpdatableComparer = new IUpdatableComparer();
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public _entity: Entity;
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/**
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* 添加到实体的组件列表
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*/
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public _components: FastList<Component> = new FastList<Component>();
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/**
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* 所有需要更新的组件列表
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*/
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public _updatableComponents: FastList<IUpdatable> = new FastList<IUpdatable>();
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/**
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* 添加到此框架的组件列表。用来对组件进行分组，这样我们就可以同时进行加工
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*/
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public _componentsToAdd: Component[] = [];
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/**
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* 标记要删除此框架的组件列表。用来对组件进行分组，这样我们就可以同时进行加工
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*/
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public _componentsToRemove: Component[] = [];
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public _tempBufferList: Component[] = [];
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/**
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* 用于确定是否需要对该框架中的组件进行排序的标志
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*/
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public _isComponentListUnsorted: boolean;
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constructor(entity: Entity) {
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this._entity = entity;
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}
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public get count() {
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return this._components.length;
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}
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public get buffer() {
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return this._components.buffer;
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}
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public markEntityListUnsorted() {
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this._isComponentListUnsorted = true;
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}
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public add(component: Component) {
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this._componentsToAdd.push(component);
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}
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public remove(component: Component) {
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if (this._componentsToRemove.contains(component))
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console.warn(`您正在尝试删除一个您已经删除的组件(${component})`);
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// 这可能不是一个活动的组件，所以我们必须注意它是否还没有被处理，它可能正在同一帧中被删除
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if (this._componentsToAdd.contains(component)) {
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this._componentsToAdd.remove(component);
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return;
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}
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this._componentsToRemove.push(component);
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}
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/**
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* 立即从组件列表中删除所有组件
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*/
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public removeAllComponents() {
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for (let i = 0; i < this._components.length; i++) {
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this.handleRemove(this._components[i]);
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}
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this._components.clear();
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this._updatableComponents.clear();
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this._componentsToAdd.length = 0;
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this._componentsToRemove.length = 0;
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}
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public deregisterAllComponents() {
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for (let i = 0; i < this._components.length; i++) {
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let component = this._components.buffer[i];
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if (!component) continue;
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// 处理IUpdatable
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if (isIUpdatable(component))
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this._updatableComponents.remove(component);
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if (Core.entitySystemsEnabled) {
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this._entity.componentBits.set(ComponentTypeManager.getIndexFor(TypeUtils.getType(component)), false);
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this._entity.scene.entityProcessors.onComponentRemoved(this._entity);
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}
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}
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}
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public registerAllComponents() {
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for (let i = 0; i < this._components.length; i++) {
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let component = this._components.buffer[i];
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if (isIUpdatable(component))
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this._updatableComponents.add(component);
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if (Core.entitySystemsEnabled) {
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this._entity.componentBits.set(ComponentTypeManager.getIndexFor(TypeUtils.getType(component)));
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this._entity.scene.entityProcessors.onComponentAdded(this._entity);
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}
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}
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}
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/**
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* 处理任何需要删除或添加的组件
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*/
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public updateLists() {
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if (this._componentsToRemove.length > 0) {
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for (let i = 0; i < this._componentsToRemove.length; i++) {
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this.handleRemove(this._componentsToRemove[i]);
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this._components.remove(this._componentsToRemove[i]);
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}
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this._componentsToRemove.length = 0;
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}
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if (this._componentsToAdd.length > 0) {
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for (let i = 0, count = this._componentsToAdd.length; i < count; i++) {
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let component = this._componentsToAdd[i];
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if (isIUpdatable(component))
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this._updatableComponents.add(component);
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if (Core.entitySystemsEnabled) {
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this._entity.componentBits.set(ComponentTypeManager.getIndexFor(TypeUtils.getType(component)));
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this._entity.scene.entityProcessors.onComponentAdded(this._entity);
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}
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this._components.add(component);
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this._tempBufferList.push(component);
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}
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// 在调用onAddedToEntity之前清除，以防添加更多组件
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this._componentsToAdd.length = 0;
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this._isComponentListUnsorted = true;
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// 现在所有的组件都添加到了场景中，我们再次循环并调用onAddedToEntity/onEnabled
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for (let i = 0; i < this._tempBufferList.length; i++) {
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let component = this._tempBufferList[i];
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component.onAddedToEntity();
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// enabled检查实体和组件
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if (component.enabled) {
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component.onEnabled();
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}
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}
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this._tempBufferList.length = 0;
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}
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if (this._isComponentListUnsorted) {
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this._updatableComponents.sort(ComponentList.compareUpdatableOrder);
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this._isComponentListUnsorted = false;
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}
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}
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public handleRemove(component: Component) {
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if (!component) return;
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if (isIUpdatable(component))
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this._updatableComponents.remove(component);
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if (Core.entitySystemsEnabled) {
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this._entity.componentBits.set(ComponentTypeManager.getIndexFor(TypeUtils.getType(component)), false);
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this._entity.scene.entityProcessors.onComponentRemoved(this._entity);
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}
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component.onRemovedFromEntity();
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component.entity = null;
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}
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/**
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* 获取类型T的第一个组件并返回它
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* 可以选择跳过检查未初始化的组件(尚未调用onAddedToEntity方法的组件)
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* 如果没有找到组件，则返回null。
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* @param type
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* @param onlyReturnInitializedComponents
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*/
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public getComponent<T extends Component>(type, onlyReturnInitializedComponents: boolean): T {
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for (let i = 0; i < this._components.length; i++) {
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let component = this._components.buffer[i];
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if (component instanceof type)
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return component as T;
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}
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// 我们可以选择检查挂起的组件，以防addComponent和getComponent在同一个框架中被调用
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if (!onlyReturnInitializedComponents) {
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for (let i = 0; i < this._componentsToAdd.length; i++) {
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let component = this._componentsToAdd[i];
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if (component instanceof type)
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return component as T;
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}
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}
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return null;
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}
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/**
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* 获取T类型的所有组件，但不使用列表分配
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* @param typeName
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* @param components
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*/
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public getComponents(typeName: any, components?) {
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if (!components)
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components = [];
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for (let i = 0; i < this._components.length; i++) {
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let component = this._components.buffer[i];
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if (component instanceof typeName) {
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components.push(component);
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}
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}
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// 我们还检查了待处理的组件，以防在同一帧中调用addComponent和getComponent
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for (let i = 0; i < this._componentsToAdd.length; i++) {
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let component = this._componentsToAdd[i];
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if (component instanceof typeName) {
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components.push(component);
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}
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}
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return components;
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}
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public update() {
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this.updateLists();
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for (let i = 0; i < this._updatableComponents.length; i++) {
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if (this._updatableComponents.buffer[i].enabled)
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this._updatableComponents.buffer[i].update();
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}
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}
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public onEntityTransformChanged(comp: transform.Component) {
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for (let i = 0; i < this._components.length; i++) {
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if (this._components.buffer[i].enabled)
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this._components.buffer[i].onEntityTransformChanged(comp);
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}
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for (let i = 0; i < this._componentsToAdd.length; i++) {
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if (this._componentsToAdd[i].enabled)
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this._componentsToAdd[i].onEntityTransformChanged(comp);
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}
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}
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public onEntityEnabled() {
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for (let i = 0; i < this._components.length; i++)
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this._components.buffer[i].onEnabled();
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}
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public onEntityDisabled() {
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for (let i = 0; i < this._components.length; i++)
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this._components.buffer[i].onDisabled();
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}
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}
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}
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