66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
//
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// Created by ricardo on 2022/6/27.
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//
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#include "BusFCFSStrategy.h"
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int BusFCFSStrategy::GetBusDirection()
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{
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bus_query_t *p = bus_model->target_query;
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if(p == nullptr)
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{
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return BUS_STOP;
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} //如果没有请求，公交车停止
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else
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{
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int clockwise = 0;
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int counterclockwise = 0; //用于顺，逆时针方向所经站台计数
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/**
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* 公交车当前所在位置
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*/
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rail_node_t *now_position = bus_model->rail_pos;
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/**
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* 公交车应该前进的方向
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*/
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rail_node_t *target_position = p->node;
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rail_node_t *pos = now_position;
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while (pos != target_position) //顺时针计数
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{
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clockwise++;
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pos = pos->next_node;
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}
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pos = now_position;
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while (pos != target_position) //逆时针计数
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{
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counterclockwise++;
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pos = pos->last_node;
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}
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if(clockwise <= counterclockwise)
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{
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return BUS_CLOCK_WISE;
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}//若顺时针距离短(或顺逆相等)，公交车顺时针运行
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else
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{
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return BUS_COUNTER_CLOCK_WISE;
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}//若逆时针距离短，公交车逆时针运行
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}
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}
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bus_query_t *BusFCFSStrategy::GetTargetQuery()
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{
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// FCFS只处理第一个请求
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return query_model->queries;
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}
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bus_query_t *BusFCFSStrategy::HandleBTWQuery()
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{
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// FCFS不进行顺便处理
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return nullptr;
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}
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