public override Object Evaluate(ExpressionContext context)
{
OperandValue1 = Operand1.Evaluate(context);
OperandValue2 = Operand2.Evaluate(context);
return(OperandValue1 != OperandValue2);
}
public override Object Evaluate(ExpressionContext context)
{
if (Operand1 is VariableExpression variableExpression)
{
OperandValue2 = Operand2.Evaluate(context);
context.Bind(variableExpression.VariableName, OperandValue2);
}
return(null);
}
/// <summary>Resolves the two operands and then compares them using the user specified operator</summary>
protected override double Execute(IGameState gameState)
{
var op1 = Operand1.Evaluate(gameState);
var op2 = Operand2.Evaluate(gameState);
switch (Operator)
{
case MathsOperator.Add: return(op1 + op2);
case MathsOperator.Sub: return(op1 - op2);
case MathsOperator.Mul: return(op1 * op2);
case MathsOperator.Div when op2 != 0: return(op1 / op2); // Return 0 if user tried to divide by zero.
case MathsOperator.Mod when op2 != 0: return(op1 % op2);
default: return(0);
}
}
/// <summary>Resolves the two operands and then compares them using the user specified operator</summary>
public double Evaluate(IGameState gameState)
{
var op1 = Operand1.Evaluate(gameState);
var op2 = Operand2.Evaluate(gameState);
switch (Operator)
{
case MathsOperator.Add: return(op1 + op2);
case MathsOperator.Sub: return(op1 - op2);
case MathsOperator.Mul: return(op1 * op2);
case MathsOperator.Div: return(op2 == 0 ? 0 : op1 / op2); // Return 0 if user tried to divide by zero. Easier than having to deal with Infinity (which C# returns).
case MathsOperator.Mod: return(op2 == 0 ? 0 : op1 % op2);
default: return(0);
}
}
/// <summary>Resolves the two operands and then compares them with the user-specified operator.</summary>
protected override bool Execute(IGameState gameState)
{
var op1 = Operand1.Evaluate(gameState);
var op2 = Operand2.Evaluate(gameState);
switch (Operator)
{
case ComparisonOperator.EQ: return(op1 == op2);
case ComparisonOperator.NEQ: return(op1 != op2);
case ComparisonOperator.GT: return(op1 > op2);
case ComparisonOperator.GTE: return(op1 >= op2);
case ComparisonOperator.LT: return(op1 < op2);
case ComparisonOperator.LTE: return(op1 <= op2);
default: return(false);
}
}
/// <summary>Compares the two strings with the given operator</summary>
public bool Evaluate(IGameState gameState)
{
var op1 = Operand1.Evaluate(gameState);
var op2 = Operand2.Evaluate(gameState);
if (CaseInsensitive)
{
op1 = op1.ToLower();
op2 = op2.ToLower();
}
switch (Operator)
{
case StringComparisonOperator.Equal: return(op1 == op2);
case StringComparisonOperator.NotEqual: return(op1 != op2);
case StringComparisonOperator.Before: return(string.Compare(op1, op2) < 0);
case StringComparisonOperator.After: return(string.Compare(op1, op2) > 0);
case StringComparisonOperator.EqualLength: return(op1.Length == op2.Length);
case StringComparisonOperator.ShorterThan: return(op1.Length < op2.Length);
case StringComparisonOperator.LongerThan: return(op1.Length > op2.Length);
case StringComparisonOperator.StartsWith: return(op1.StartsWith(op2));
case StringComparisonOperator.EndsWith: return(op1.EndsWith(op2));
case StringComparisonOperator.Contains: return(op1.Contains(op2));
default: return(false);
}
}
