/// <summary>
/// Sets the UI for the game screen.
/// </summary>
private void setUI(StudentProblem curProb)
{
AddSubProblem prob = curProb.Problem;
Session["CurAnswer"] = prob.Result;
string ord1 = prob.Operator1.ToString();
string ord2 = prob.Operator2.ToString();
// set the images for the UI
imgOpSign.ImageUrl = "images/signs/plus.png";
imgOrd1.ImageUrl = "images/nums/" + ord1 + ".png";
imgOrd2.ImageUrl = "images/nums/" + ord2 + ".png";
// set alternate text
imgOpSign.AlternateText = "+";
imgOrd1.AlternateText = ord1;
imgOrd2.AlternateText = ord2;
}
// Randomly fill problem list with problems from the appropriate level and problem type
// TODO Currently hard coded for the first 55 problems, which are Addition Level 1
// TODO Create a SQL query which gets a list of all IDs for the appropriate ProblemType and Level
// TODO Then generate random IDs based on that list
private void PopulateProblemList()
{
//int id;
AddSubProblem thisAddSubProb;
Result thisResult;
// Open a connection to the DB
using (DataClassesDataContext dc = new DataClassesDataContext())
{
// Random number generator for problem IDs
Random r = new Random();
// Fill the ProblemList with problems, based on
// the problem ID, which is randomly generated
for (int i = 0; i < NUM_PROBS_PER_ROUND; i++)
{
// Random ID
// TODO random seed currently hardcoded to 0..55
int id = r.Next(LOWEST_PROBLEM_ID, (HIGHEST_PROBLEM_ID + 1));
// Set the sql string
var temp = dc.AddSubProblems.Where(x => x.AddSubProblemID == id).First();
thisAddSubProb = (AddSubProblem)(dc.AddSubProblems.Where(x => x.AddSubProblemID == id)).First();
// Create the new Result
thisResult = new Result();
// Pre-set values in the new Result
thisResult.ProblemID = id;
thisResult.Level = thisAddSubProb.Level;
// Create a new StudentProblem
StudentProblem sp =
new StudentProblem(thisAddSubProb, thisResult);
// Add to problem list
ProblemList.Add(sp);
}
}
}
// Randomly fill problem list with problems from the appropriate level and problem type
// TODO: Query the Results table for id = StudentID, level = Level, and problem type = ProbType
// This should return a list of the missed problems of this type in this level.
// Use these values to start the PopulateProblemList list
private void PopulateProblemList()
{
AddSubProblem thisAddSubProb = null;
Result thisResult;
// Open a connection to the DB
using (DataClassesDataContext dc = new DataClassesDataContext())
{
// RELEASE 2:
// Remove the 0..55 range, and replace
// it with a random selection where Level = desired level
// NEWID() provides a randomization function.
// See MSDN, Selecting Rows Randomly from a Large Table
// https://msdn.microsoft.com/en-us/library/cc441928.aspx
// Get list of *missed* problem IDs for this level
// This will form the first part of the problem list
var missedProbs = dc.GetMissedProblems(sid, (int)probType);
List <int> missedProbIds = new List <int>();
foreach (GetMissedProblemsResult m in missedProbs)
{
missedProbIds.Add(m.ProblemID);
}
// Now get a list of *new* problem IDs for this level and problem type
var problemQuery = dc.GetProblemIDs((int)probType, level);
List <int> newProbIds = new List <int>();
foreach (GetProblemIDsResult i in problemQuery)
{
newProbIds.Add(i.AddSubProblemID);
}
// Finally, combine the lists.
// For now, we will start with missed problem ids,
// and fill the rest of the list with new problem ids
// There will be problem ids that are not covered in this round
// TODO: How to deal with more than NUM_PROBS_PER_ROUND missed problems?
List <int> allProbIds = new List <int>();
// At most, the number of missed problems to be shown
// is the number of problems in the current round
int numMissedShown = Math.Min(missedProbIds.Count, NUM_PROBS_PER_ROUND);
// If there are any problems not yet used, the slots will
// be filled by new problems
int numNewShown = NUM_PROBS_PER_ROUND - numMissedShown;
for (int i = 0; i < numMissedShown; i++)
{
allProbIds.Add(missedProbIds[i]);
}
int newProbCount = 0;
for (int i = numMissedShown; i < NUM_PROBS_PER_ROUND; i++)
{
allProbIds.Add(newProbIds[newProbCount++]);
}
// Get problems based on the list of ids
var problems = dc.GetProblems(allProbIds);
foreach (var prob in problems)
{
// Create the new Result
thisResult = new Result();
// Pre-set values in the new Result
thisResult.ProblemID = prob.AddSubProblemID;
thisResult.Level = prob.Level;
// Create a new StudentProblem
StudentProblem sp =
new StudentProblem(prob, thisResult);
// new StudentProblem(thisAddSubProb, thisResult);
// Add to problem list
ProblemList.Add(sp);
}
}
}
/// <summary>
/// Submits student's answer and checks against stored answer.
/// Displays pop up with Correct/Incorrect and sets the UI for the next problem.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnSubmit_Click(object sender, ImageClickEventArgs e)
{
// check that the user input is not blank
if (String.IsNullOrWhiteSpace(txtStudentInput.Text))
{
return; // return out if the input is blank
}
// get index value from hidden label
int idx;
Int32.TryParse(lblProbIdx.Text, out idx);
// get student answer from textbox
int studentAnswer;
Int32.TryParse(txtStudentInput.Text, out studentAnswer);
txtStudentInput.Text = "";
ProblemSet probSet = (ProblemSet)Session["CurProbSet"];
StudentProblem curProb = probSet.ProblemList[idx];
// correct answer
if (studentAnswer == curProb.Problem.Result)
{
// add happy cookie image
imgCookie.ImageUrl = "images/cookie-happy.png";
imgCookie.AlternateText = "Happy Cookie";
//change the label text and color
lblAnswerResult.Text = "Correct!";
//lblAnswerResult.ForeColor = "#9BFF3A";
// increment right answers
int x = (int)Session["RightAnswerCount"];
Session["RightAnswerCount"] = ++x;
}
// incorrect answer
else
{
// add sad cookie image
imgCookie.ImageUrl = "images/cookie-sad.png";
imgCookie.AlternateText = "Sad Cookie";
//change the label text and color
lblAnswerResult.Text = "Incorrect!";
// lblAnswerResult.ForeColor = "#E52B14";
// increment wrong answers
int x = (int)Session["WrongAnswerCount"];
Session["WrongAnswerCount"] = ++x;
}
// Store problem and student's answer as a Result object
Result result = new Result();
result.StudentID = (int)Session["UserID"];
result.ProblemID = curProb.Problem.AddSubProblemID;
result.Answer = studentAnswer;
result.Level = curProb.Problem.Level;
result.Round = (int)Session["CurRound"];
// Add the result to the list node
curProb.studentResult = result;
// bring up the results pop up panel
pnlGame.Visible = false;
pnlResults.Visible = true;
// check if we've reached the end of the list
if (++idx >= probSet.ProblemList.Count)
{
// save the results to the DB
probSet.SaveResults();
lblGameOver.Text = "true";
// advance the round
int round = (int)Session["CurRound"];
Session["CurRound"] = ++round;
// switch panels to display
setFinal();
}
else
{
// store current index in hidden label
lblProbIdx.Text = idx.ToString();
// move to the next problem
setUI(probSet.ProblemList[idx]);
}
}
