feat(effect): 添加效果系统模块 (#332)
实现 Buff/Debuff 效果管理和属性修改器系统: 核心功能: - 效果容器管理效果的应用、移除和更新 - 支持持续时间类型: 永久/计时/条件 - 支持叠加规则: 刷新/叠加/独立/替换/忽略 - 效果标签系统用于分类和查询 - 效果优先级和互斥标签支持 - 效果事件系统 (应用/移除/叠加/刷新/跳动/过期) 修改器系统: - 属性修改器支持加法/乘法/覆盖/最小值/最大值操作 - 优先级分层计算 (基础/加法/乘法/最终) - 数值计算器自动按优先级应用修改器 蓝图节点 (12个): - ApplyEffect: 应用效果 - RemoveEffect/RemoveEffectByTag: 移除效果 - HasEffect/HasEffectTag: 检查效果 - GetEffectStacks/GetEffectRemainingTime/GetEffectCount: 查询效果 - ClearAllEffects: 清除所有效果 - OnEffectApplied/OnEffectRemoved/OnEffectTick: 效果事件
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304
packages/effect/src/modifiers/ModifierContainer.ts
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304
packages/effect/src/modifiers/ModifierContainer.ts
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/**
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* @zh 修改器容器
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* @en Modifier Container
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*
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* @zh 管理属性修改器并计算最终值
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* @en Manages attribute modifiers and calculates final values
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*/
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import type { IModifier, ModifierOperation, ModifierPriority, IAttributeCalculator } from './IModifier';
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let modifierCounter = 0;
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function generateModifierId(): string {
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return `mod_${Date.now()}_${++modifierCounter}`;
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}
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/**
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* @zh 默认数值计算器
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* @en Default numeric calculator
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*/
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export class NumericCalculator implements IAttributeCalculator<number> {
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calculate(baseValue: number, modifiers: IModifier<number>[]): number {
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if (modifiers.length === 0) return baseValue;
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// Sort by priority
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const sorted = [...modifiers].sort((a, b) => {
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const priorityOrder: Record<ModifierPriority, number> = {
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base: 0,
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add: 1,
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multiply: 2,
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final: 3
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};
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return priorityOrder[a.priority] - priorityOrder[b.priority];
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});
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let value = baseValue;
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let addSum = 0;
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let multiplyProduct = 1;
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for (const mod of sorted) {
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if (!mod.isActive) continue;
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switch (mod.operation) {
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case 'add':
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addSum += mod.value;
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break;
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case 'multiply':
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multiplyProduct *= mod.value;
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break;
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case 'override':
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value = mod.value;
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addSum = 0;
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multiplyProduct = 1;
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break;
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case 'min':
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value = Math.min(value, mod.value);
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break;
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case 'max':
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value = Math.max(value, mod.value);
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break;
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}
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}
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// Apply in order: base → add → multiply
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return (value + addSum) * multiplyProduct;
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}
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}
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/**
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* @zh 修改器容器
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* @en Modifier container
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*/
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export class ModifierContainer<T = number> {
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private readonly _modifiers: Map<string, IModifier<T>> = new Map();
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private readonly _modifiersByAttribute: Map<string, Set<string>> = new Map();
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private readonly _modifiersBySource: Map<string, Set<string>> = new Map();
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private readonly _calculator: IAttributeCalculator<T>;
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private readonly _baseValues: Map<string, T> = new Map();
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private readonly _cachedValues: Map<string, T> = new Map();
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private _isDirty = false;
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/**
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* @zh 创建修改器容器
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* @en Create modifier container
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*
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* @param calculator - @zh 属性计算器 @en Attribute calculator
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*/
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constructor(calculator?: IAttributeCalculator<T>) {
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this._calculator = calculator ?? new NumericCalculator() as unknown as IAttributeCalculator<T>;
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}
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/**
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* @zh 设置属性基础值
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* @en Set attribute base value
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*/
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setBaseValue(attribute: string, value: T): void {
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this._baseValues.set(attribute, value);
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this._invalidateAttribute(attribute);
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}
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/**
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* @zh 获取属性基础值
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* @en Get attribute base value
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*/
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getBaseValue(attribute: string): T | undefined {
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return this._baseValues.get(attribute);
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}
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/**
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* @zh 添加修改器
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* @en Add modifier
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*/
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addModifier(
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attribute: string,
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operation: ModifierOperation,
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value: T,
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sourceId: string,
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priority: ModifierPriority = 'add'
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): IModifier<T> {
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const modifier: IModifier<T> = {
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id: generateModifierId(),
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sourceId,
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attribute,
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operation,
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priority,
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value,
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isActive: true
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};
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this._modifiers.set(modifier.id, modifier);
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// Index by attribute
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if (!this._modifiersByAttribute.has(attribute)) {
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this._modifiersByAttribute.set(attribute, new Set());
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}
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this._modifiersByAttribute.get(attribute)!.add(modifier.id);
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// Index by source
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if (!this._modifiersBySource.has(sourceId)) {
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this._modifiersBySource.set(sourceId, new Set());
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}
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this._modifiersBySource.get(sourceId)!.add(modifier.id);
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this._invalidateAttribute(attribute);
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return modifier;
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}
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/**
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* @zh 移除修改器
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* @en Remove modifier
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*/
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removeModifier(modifierId: string): boolean {
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const modifier = this._modifiers.get(modifierId);
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if (!modifier) return false;
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this._modifiers.delete(modifierId);
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this._modifiersByAttribute.get(modifier.attribute)?.delete(modifierId);
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this._modifiersBySource.get(modifier.sourceId)?.delete(modifierId);
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this._invalidateAttribute(modifier.attribute);
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return true;
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}
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/**
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* @zh 按来源移除修改器
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* @en Remove modifiers by source
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*/
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removeBySource(sourceId: string): number {
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const ids = this._modifiersBySource.get(sourceId);
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if (!ids) return 0;
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let count = 0;
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for (const id of [...ids]) {
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if (this.removeModifier(id)) count++;
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}
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this._modifiersBySource.delete(sourceId);
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return count;
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}
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/**
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* @zh 按属性移除修改器
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* @en Remove modifiers by attribute
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*/
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removeByAttribute(attribute: string): number {
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const ids = this._modifiersByAttribute.get(attribute);
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if (!ids) return 0;
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let count = 0;
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for (const id of [...ids]) {
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if (this.removeModifier(id)) count++;
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}
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return count;
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}
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/**
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* @zh 获取属性的所有修改器
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* @en Get all modifiers for an attribute
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*/
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getModifiersForAttribute(attribute: string): IModifier<T>[] {
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const ids = this._modifiersByAttribute.get(attribute);
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if (!ids) return [];
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return [...ids].map(id => this._modifiers.get(id)!).filter(Boolean);
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}
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/**
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* @zh 获取来源的所有修改器
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* @en Get all modifiers from a source
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*/
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getModifiersFromSource(sourceId: string): IModifier<T>[] {
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const ids = this._modifiersBySource.get(sourceId);
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if (!ids) return [];
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return [...ids].map(id => this._modifiers.get(id)!).filter(Boolean);
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}
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/**
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* @zh 计算属性最终值
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* @en Calculate attribute final value
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*/
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getValue(attribute: string): T {
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// Check cache
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if (!this._isDirty && this._cachedValues.has(attribute)) {
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return this._cachedValues.get(attribute)!;
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}
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const baseValue = this._baseValues.get(attribute);
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if (baseValue === undefined) {
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throw new Error(`No base value set for attribute: ${attribute}`);
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}
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const modifiers = this.getModifiersForAttribute(attribute);
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const finalValue = this._calculator.calculate(baseValue, modifiers);
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this._cachedValues.set(attribute, finalValue);
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return finalValue;
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}
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/**
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* @zh 尝试获取属性最终值
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* @en Try to get attribute final value
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*/
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tryGetValue(attribute: string, defaultValue: T): T {
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try {
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return this.getValue(attribute);
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} catch {
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return defaultValue;
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}
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}
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/**
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* @zh 检查属性是否有修改器
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* @en Check if attribute has modifiers
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*/
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hasModifiers(attribute: string): boolean {
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const ids = this._modifiersByAttribute.get(attribute);
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return ids !== undefined && ids.size > 0;
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}
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/**
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* @zh 获取所有已修改的属性
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* @en Get all modified attributes
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*/
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getModifiedAttributes(): string[] {
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return [...this._modifiersByAttribute.keys()];
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}
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/**
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* @zh 清除所有修改器
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* @en Clear all modifiers
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*/
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clear(): void {
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this._modifiers.clear();
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this._modifiersByAttribute.clear();
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this._modifiersBySource.clear();
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this._cachedValues.clear();
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this._isDirty = true;
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}
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private _invalidateAttribute(attribute: string): void {
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this._cachedValues.delete(attribute);
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this._isDirty = true;
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}
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/**
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* @zh 标记缓存已更新
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* @en Mark cache as updated
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*/
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markClean(): void {
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this._isDirty = false;
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}
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}
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/**
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* @zh 创建修改器容器
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* @en Create modifier container
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*/
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export function createModifierContainer<T = number>(
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calculator?: IAttributeCalculator<T>
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): ModifierContainer<T> {
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return new ModifierContainer(calculator);
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}
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