所以我來自C#詞,試圖用C++編程我的粒子光子。我試圖利用一個班級來幫助更好地組織數據。對象上的C++字段值未被保留
我做了一個叫巷類的定義:
#ifndef Lane_h
#define Lane_h
#include "application.h"
class Lane {
public:
Lane(int sensorId, String laneName);
Lane();
int
readSensor(void),
getWinningOrder(void);
bool
hasFinished(void);
void
setWinningOrder(int order);
String
getName();
int
winningOrder;
private:
int
sensor;
String
name;
};
#endif
這時我犯了一個cpp文件:
#include "Lane.h"
#include "application.h"
Lane::Lane(int sensorId, String laneName){
sensor = sensorId;
name = laneName;
winningOrder = 0;
}
Lane::Lane(){
winningOrder = 0;
}
int Lane::readSensor(){
int value = analogRead(sensor);
return value;
}
String Lane::getName(){
return name;
}
bool Lane::hasFinished(void){
Particle.publish("DEBUG", name + " has a winning order of: " + String(winningOrder));
return winningOrder != 0;
}
到目前爲止好。
現在在我的.ino文件中,粒子執行循環,我從中讀取並設置了我的字段。通過循環預先設定的調試值返回0和設定值後返回1的預期(我稍微濃縮此文件,以使其更易於閱讀。)
// This #include statement was automatically added by the Particle IDE.
#include "Lane.h"
Lane lanes[] = {
Lane(A5, "Lane 1"),
Lane(A4, "Lane 2"),
Lane(A3, "Lane 3"),
Lane(A2, "Lane 4")
};
int winningPlace = 1;
void setup() {
}
void loop() {
for (uint32_t i = 0; i < arraySize(lanes); i++) {
Lane lane = lanes[i];
int value = lane.readSensor();
if(value + sensitivity < initalValues[i] && !lane.hasFinished()){
Particle.publish("DEBUG", lane.getName() + " pre-set field value is " + lane.winningOrder);
lane.winningOrder = winningPlace++;
Particle.publish("DEBUG", lane.getName() + " set field value is " + lane.winningOrder);
}
}
}
第一次。下一次通過循環它進入if語句爭議!lane.hasFinished()。預設返回0,就好像它正在查看一個新對象或其他東西一樣。我在這裏錯過了什麼?爲什麼該字段的值不會保留在循環中循環之間的對象上?