76 lines
2.3 KiB
TypeScript
76 lines
2.3 KiB
TypeScript
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module es {
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export class WorldState implements IEquatable<WorldState> {
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/**
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* 我们使用条件索引上的位掩码移位来翻转位。
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*/
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public values: number;
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/**
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* 比特掩码用于明确表示false。
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* 我们需要一个单独的负值存储空间，因为一个值的缺失并不一定意味着它是假的
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*/
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public dontCare: number;
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/**
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* 是必需的，这样我们就可以从字符串名称中获取条件索引
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*/
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public planner: ActionPlanner;
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/**
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*
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* @param planner
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*/
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public static create(planner: ActionPlanner): WorldState {
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return new WorldState(planner, 0, -1);
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}
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/**
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*
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* @param planner
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* @param values
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* @param dontcare
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*/
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constructor(planner: ActionPlanner, values: number, dontcare: number){
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this.planner = planner;
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this.values = values;
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this.dontCare = dontcare;
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}
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public set(conditionId: number, value: boolean): boolean {
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this.values = value ? (this.values | (1 << conditionId)) : (this.values & ~(1 << conditionId));
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this.dontCare ^= (1 << conditionId);
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return true;
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}
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/**
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*
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* @param other
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*/
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public equals(other: WorldState): boolean {
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let care = this.dontCare ^ -1;
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return (this.values & care) == (other.values & care);
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}
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/**
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* 用于调试目的。提供一个包含所有前提条件的可读字符串
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* @param planner
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*/
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public describe(planner: ActionPlanner): string {
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let s = "";
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for (let i = 0; i < ActionPlanner.MAX_CONDITIONS; i ++){
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if ((this.dontCare & (1 << i)) == 0){
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let val = planner.conditionNames[i];
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if (val == null)
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continue;
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let set = ((this.values & (1 << i)) != 0);
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if (s.length > 0)
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s += ", ";
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s += (set ? val.toUpperCase() : val);
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}
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}
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return s;
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}
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}
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}
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