public static Event Register(EventType gameEvent, FunctionWithArguments function)
{
var newEvent = new Event(gameEvent, function);
newEvent.IsRegistered = true;
RegisteredEvents.Registered[gameEvent].Add(newEvent);
return(newEvent);
}
public double DfDx(FunctionWithArguments Func, object Arguments, double x, double h)
{
double XPrev = x - h;
double XNext = x + h;
double FuncPrev = Func(XPrev, Arguments);
double FuncNext = Func(XNext, Arguments);
return((FuncNext - FuncPrev) / (2.0D * h));
}
public double DfDx(FunctionWithArguments Func, object Arguments, double x, double InitialStepSize, double Precision)
{
double precision = Precision; // precision to evaluate derivative
double h = InitialStepSize; // initial step size
double c = 10.0D; // factor do divide h (i.e., h_new =h_old/c)
double eps = 1.0E-100D; // small number
int maxSteps = 100; // maximum times to divid h
double devOld, devNew; // old derivative
double calcPrecision; // new derivative
// calculate initial derivative
devOld = this.DfDx(Func, Arguments, x, h);
devNew = devOld;
for (int i = 0; i < maxSteps; i++)
{
// reduce h
h /= c;
// calculate new derivative
devNew = this.DfDx(Func, Arguments, x, h);
//calculate precision
if (Math.Abs(devNew) > eps)
{
calcPrecision = Math.Abs((devNew - devOld) / devNew);
}
else
{
// don't divide by devNew if devNew is small
calcPrecision = Math.Abs(devNew - devOld);
}
// stop if precision is met
if (calcPrecision < precision)
{
//Console.Write("number of steps = "+i.ToString()+"\n");
//Console.Write("Calculated precision = "+calcPrecision.ToString()+"\n");
return(devNew);
}
devOld = devNew;
}
return(devNew);
}
public static void Main(string[] args)
{
FunctionWithNoArgumentsAndNoResult simpleFunction = delegate() {
System.Console.WriteLine("Simple function.");
};
FunctionWithNoArgumentsAndNoResult functionWithLocalVariable = delegate() {
int i = 4;
System.Console.WriteLine(string.Format("A function with a local variable: {0}", i));
};
FunctionWithResult functionReturningValue = delegate() {
System.Console.WriteLine("A function returning value.");
return(9);
};
FunctionWithArguments functionWithArguments = delegate(int number, string text) {
System.Console.WriteLine("A function with some arguments:\n"
+ string.Format("number: {0}\n", number)
+ string.Format("text: {0}", text));
};
int j;
System.Console.WriteLine("Functions:\n");
simpleFunction();
System.Console.WriteLine();
functionWithLocalVariable();
System.Console.WriteLine();
j = functionReturningValue();
System.Console.WriteLine(string.Format("returned value: {0}\n", j));
functionWithArguments(6, "orange");
System.Console.WriteLine();
}
Event(EventType gameEvent, FunctionWithArguments function)
{
this.GameEvent = gameEvent;
this.Function = function;
}
