multidimensional array; changing one element, sets other elements to 0

Questions & Answers
1

I have this save function:

	public void Save(){
		
		
	BinaryFormatter bf= new BinaryFormatter();
	FileStream file = File.Create(Application.persistentDataPath+"/"+profileName+".dat");
	
		
	ProfileData data= new ProfileData();
		
	data.currentCar=CurrentCar;
	data.transmissionMode=TransmissionMode;
	data.speedometerUnit=SpeedometerUnit;
		
	      data.carParts[CurrentCar,0]=currBodykit;
		  data.carParts[CurrentCar,1]=currRim;
		  data.carParts[CurrentCar,2]=currSpoiler;
		  data.carParts[CurrentCar,3]=currPaint;

		 etc.
		
		
		
			
	bf.Serialize(file,data);
	file.Close();
		
	
		
	}

it should only change the values for CurrentCar, but it also sets all other values to zero, so changing settings for one car overwrites the other car’s settings…

2

My advice, which may seem off-topic, is to avoid multidimensional arrays at all costs. Also using unnamed integers as part indices is the Magic Number antipattern. What you want is a CarData class which has named slots for each possible part. Your savegame then is a list of CarDatas.

[Serializable]
public class CarData
{
    public WheelData frontLeftWheel;
    public WheelData frontRightWheel;
    ...
}

PS: You might want to mark the fields of the saved class as well as the class itself as [Serializable] if not yet.