91 lines
2.2 KiB
TypeScript
91 lines
2.2 KiB
TypeScript
import { _decorator, Animation, Component, SpriteFrame } from 'cc'
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import { FsmParamTypeEnum } from '../Enum'
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const { ccclass } = _decorator
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import State from './State'
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import SubStateMachine from './SubStateMachine'
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type ParamsValueType = boolean | number
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export interface IParamsValue {
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type: FsmParamTypeEnum
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value: ParamsValueType
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}
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export const getInitParamsTrigger = () => {
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return {
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type: FsmParamTypeEnum.Trigger,
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value: false,
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}
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}
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export const getInitParamsNumber = () => {
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return {
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type: FsmParamTypeEnum.Number,
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value: 0,
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}
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}
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/***
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* 流动图
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* 1.entity的state或者direction改变触发setter
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* 2.setter里触发fsm的setParams方法
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* 3.setParams执行run方法（run方法由子类重写）
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* 4.run方法会更改currentState，然后触发currentState的setter
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* 5-1.如果currentState是子状态机，继续执行他的run方法，run方法又会设置子状态机的currentState，触发子状态run方法
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* 5-2.如果是子状态，run方法就是播放动画
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*/
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/***
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* 有限状态机基类
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*/
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@ccclass('StateMachine')
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export default abstract class StateMachine extends Component {
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private _currentState: State | SubStateMachine = null
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params: Map<string, IParamsValue> = new Map()
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stateMachines: Map<string, SubStateMachine | State> = new Map()
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animationComponent: Animation
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getParams(paramName: string) {
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if (this.params.has(paramName)) {
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return this.params.get(paramName).value
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}
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}
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setParams(paramName: string, value: ParamsValueType) {
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if (this.params.has(paramName)) {
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this.params.get(paramName).value = value
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this.run()
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this.resetTrigger()
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}
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}
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get currentState() {
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return this._currentState
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}
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set currentState(newState) {
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if (!newState) {
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return
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}
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this._currentState = newState
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this._currentState.run()
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}
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/***
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* 清空所有trigger
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*/
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resetTrigger() {
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for (const [, value] of this.params) {
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if (value.type === FsmParamTypeEnum.Trigger) {
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value.value = false
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}
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}
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}
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/***
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* 由子类重写，方法目标是根据当前状态和参数修改currentState
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*/
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abstract init(...args: any[]): void
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abstract run(): void
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}
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