//parses the input string and updates game state if it is a valid assignment, else returns false
public bool ParseAndUpdate(string input)
{
references = MasterController.instance.references;
string name = trimVariableNameFromString(ref input);
bool isAssignment = trimAssignmentFromString(ref input) == "=";
//Assignment case (variable)
if (isAssignment)
{
try
{
int evaluated = EvaluateString.Evaluate(input, references);
if (!references.ContainsKey(name))
{
GameObject newBlock = Instantiate(variable, Vector3.zero, Quaternion.identity);
newBlock.GetComponent <VariableController>().SetNameAndData(name, evaluated);
references.Add(name, newBlock);
}
else
{
((GameObject)references[name]).GetComponent <VariableController>().SetData(evaluated);
}
}
catch (Exception e)
{
Debug.Log("Parse failed.");
return(false);
}
}
return(true);
}
private Boolean evaluate(String expression, int answer)
{
if (expression.Length != 3 || isOperator(expression, 0) || isOperator(expression, expression.Length - 1))
{
return(false);
}
else
{
try
{
return(((int)EvaluateString.Evaluate(expression)) == answer);
}
catch (Exception e)
{
return(false);
}
}
}
private Boolean evaluate(String expression, int answer)
{
if (expression.Length != 5 || isOperator(expression, 0) || isOperator(expression, expression.Length - 1))
{
return(false);
}
else
{
String expAnswer = "";
for (int i = 0; i < expression.Length; i++)
{
if (PlayerPrefs.GetInt("Solve") == 0 && i == 0)
{
expAnswer += "(";
}
if (PlayerPrefs.GetInt("Solve") == 0 && i == 3)
{
expAnswer += ")";
}
if (PlayerPrefs.GetInt("Solve") == 1 && i == 2)
{
expAnswer += "(";
}
expAnswer += expression[i];
if (PlayerPrefs.GetInt("Solve") == 1 && i == 4)
{
expAnswer += ")";
}
}
try
{
return(((int)EvaluateString.Evaluate(expAnswer)) == answer);
} catch (Exception e)
{
return(false);
}
}
}