How to check if an int's value has decreased by 1?

Questions & Answers
1

So I’m making a top-down 2D shooter in which enemy caps spawn, and I have a variable keeping track of the spawn count, the number of enemies currently in the scene. When an enemy is killed the variable decreases by 1. I was hoping to use C# to write a script which basically amounts to “If the spawnCount variable decreases by 1, Increase the score variable by 1.” I know how to increase the score variable, but I haven’t a clue how have the game find out if the spawnCount has decreased by 1. So would anybody know a way?

2

public int spawnCount;
public int score;

    public int SpawnCount
    {
        get
        {
            return spawnCount;
        }
        set
        {
            int oldCountValue = spawnCount;
            spawnCount = value;
            if(spawnCount > oldCountValue)
            {
                score += spawnCount - oldCountValue;
            }
        }
    }